abst-iesc.ui.ac.id/files/abstract-book.pdf · 1 master student, department of architecture, faculty...

A B S T -R A C TB O O K

InternationalEngineeringStudentsConference

The 5th

2020

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July 23 - 25, 2020Universitas Indonesia

01S u s ta i n a b l e

a n d C l e a nE n e r g y


The 5th

2020

Synthesis and Characterization of Green Coke-derived Activated

Carbon

Richard1, Iyan Subiyanto1, and Chairul Hudaya1,2*

1 Energy System Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424,

Indonesia 2 Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424,

Indonesia

*e-mail: [email protected]

Abstract. Activated carbon has been playing a significant role in many applications, especially

in energy storage devices. However, commercially activated carbons generally require

complicated processes and high production costs. Therefore, green coke-based activated

carbon will be used as a carbon source. To synthesize it, KOH as an activator was employed

with variations of C: KOH in the ratio of 1:2, 1:3, 1:4, and 1:5 with an activation temperature

of 700℃. The characterizations of activated carbon are obtained from SEM, EDX, Raman

Spectroscopy, and BET. The optimal activated carbon sample with a specific surface area of

2,024 m2 /g with high carbon content (>80%) supported by high porosity carbon image

obtained by SEM. The result shows that the synthesized activated carbon would be an ideal

choice for energy storage device applications. Therefore, this study is expected to reduce the

costs of activated carbon production by expanding the utilization of petroleum waste

Keywords: activated carbon, energy storage material, green coke, specific surface area

Hopes & Prayes:

Ornaments as Representations of Cultural Sustainability in the

Chinese Mayor Mansion, Muntok – West Bangka

W. L. Larasati1* and K. R. Kurniawan2

1 Affiliation: Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Affiliation: Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Nineteenth century Bangka was like mainland China; from Chinese people seen on

the street, temples, and traditional events held in the city. The Chinese mine-workers who came

to the island since eighteenth century brought those cultures –and are well sustained until

today. Along those who came was Tjoeng A Tiam, who worked for the Dutch as Mayor of

Chinese in 1889. He built a sizeable mansion for his family, near Muntok Port; and had it

decorated with Chinese ornaments. We consider them as physical dictionary of Chinese

cultures that are still celebrated today. This research attempts to uncover the meanings of the

ornaments and understand the thought behind its usage from historical point of view. The result

is that they conveyed the owner’s hopes and prayers as well as providing us with a view on

their homeland cultures.

Keywords: cultural sustainability, Chinese ancient religions, Chinese architecture, Chinese Mayor

Mansion, Muntok Bangka

Pro-Environmental Behavior : 3R Measuring Instrument

Susanti Muvana Nainggolan1*, Ova Candra Dewi1, Toga H Panjaitan1

1 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. In order to support the sustainable development concept, a city should have a

balanced development between the social, economic, and environmental aspects. The social

aspect of sustainable development is also an important aspect to be focused on. Pro-

environmental behavior is one of the social aspects from human behavior that will help the

implementation and support the Sustainable Development Goals (SDGs). This paper aims to

create a pro-environmental behavior measuring instrument, which can be used to measure

human behavior through their Reduce, Reuse, and Recycle (3R) as a categorize of behavior in

an architectural spaces with daily lifestyle. The method of making this 3R instrument is by

reviewing previous study which contains several items of pro-environmental behaviour issues.

This study may help other related researches about proenvironmental behaviour, in order to

help future researches with this 3R measuring instrument as a dependent variable to confirm

other independent variable as a predictor.

Keywords: reduce, reuse, recycle, pro-environmental behaviour, measuring instrument, human

behavior

Savonius Wind Turbine as an Electrical Source of

Renewable Energy-Based Train Station in Order to Reduce

Fossil Energy Use

Dwi Yulianto1, Farid Mulia Latief2, Muhammad Bintang Pratama3

1 Faculty of Mechanical and Aerospace Engineering, Bandung Institute of Technology, 40116,

Indonesia 2 Faculty of Mechanical and Aerospace Engineering, Bandung Institute of Technology, 40116,

Indonesia 3 Faculty of Law Sebelas Maret University of Surakarta, 57126, Indonesia

*e-mail: [email protected], [email protected]

[email protected]

Abstract. The train station has high electrical energy consumption needs in carrying out train

operations. Massive electricity needs needed by the train station, in general, depend on

conventional fuels that are non-renewable. An alternative source of environmentally friendly

and renewable energy is needed. In this paper, Savonius wind turbines are an effort to produce

the electricity needed. The flow of electrical energy is generated through the conversion of

kinetic energy from the wind from the movement of trains that pass (streamflow). The turbine

is projected along the platform column and the gap between the tracks at the station.

Calculation results show that in order to meet the required power output, a turbine designed

to have a power coefficient (Cp) of 0.18 and a tip speed ratio (λ) of 1. Aspect ratio (α) and

overlap ratio (β) respectively are 2 and 0.15. The turbine consists of 2 semicircular blades with

a height of 1.2 m and a rotor diameter of 0.6 m..

Keywords: Fossil Energy, Electric Energy, Train Stations, Alternative Energy

Analysis on Daylighting Performance of Skycourt as Shading on

High-rise Building in Jakarta

Julius Michael Sinaga1*, Dalhar Susanto1 and Nasruddin2

1 Department of Architecture, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok,

Depok 16424, Indonesia 2 Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI

Depok, Depok 16424, Indonesia


Abstract. Current issue on the construction of high-rise building is the lack of daylight and its

nonuniform distribution into spaces of the building. Skycourt as a green open space and

external shading façade allows natural light to penetrate into the interior of high-rise

buildings. This paper aims assessed skycourt design variant and its effect on the performance

of daylighting in space adjacent to the skycourt in a tropical climate high-rise office building.

The case study is 'Central' skycourt in the Ministry of Public Works and Public Housing

Jakarta. The field study recorded daylight intensity, and simulation study was performed using

DIALux Evo into two parts, begin with a calibration and follow by variant design analysis of

skycourt to evaluate Daylighting Factor and Uniformity Daylighting Factor. The result showed

that configuration of the skycourt orientation to the east on the 10-floor height has the most

effective DF and UDF.

Keywords: Skycourt, External shading façade, Daylighting Factor, Uniformity Daylighting Factor,

High-rise Building, Tropical Climate

Principles of environmental design in schools in developing pro-

environmental behaviour: A review

Restika Rahmadona Efiariza1*, Ova Candra Dewi1 and Toga H. Panjaitan1

1 Department of Architecture, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. This paper aims to review the principles of environmental design in schools from

previous studies. Sustainable development has become a global trend and commitment to

protect and recover the earth from damage. Environmental education plays an important role

in achieving sustainable development goals. School spaces and design must be considered to

achieve the most efficient education. The environmental design explores, considers, and

understands the relationship between nature, buildings, and human beings to encourage

students to be active in caring for the environment and shaping sustainable behaviours. This

paper is conducted by reviewing and comparing the principles and strategies of environmental

design in the school of the previous studies in developing pro-environmental behaviour. As a

result, design strategies for classrooms, landscapes, also the management of water, waste, and

energy in schools are presented. This paper is expected to help building a more sustainable

school

Keywords: environmental design, school, principles, green behaviour

Passive Design Method for Reducing Cooling Load in Low-

Income Rusun in Jakarta

Jeremy Lorenzo Sumilat1*, Ova Candra Dewi1, Emirhadi Suganda1



Abstract. This paper reviews about how much cooling load that can be reduce by using passive

design method at the low-income rusun in Jakarta. Jakarta has many rusun because one of the

government’s target is to provide decent place to live for the low-income people. Rusun is one

of the buildings that increases carbon emissions and for humid tropical climate in Jakarta, the

carbon emission comes from energy usage for cooling load. The previous study stated that

cooling load can be reduce by two methods: passive and active design method. This paper is

conducted by doing a research on a low-income rusun in Jakarta area using the BIM-Revit

software to help calculating the cooling load of the building and then using passive design such

as using low SHGC glass, and minimizing window percentage. The result of this study shows

that cooling load can be reduce by using passive design method.

Keywords: cooling load, passive design, low SHGC glass, low-income Rusun

Lighting Intensity for Sedentary Behaviour While Watching

Television

Lutfi Landrian1*, Dr.-Ing. Ova Candra Dewi, S.T., M.Sc.2 and Dr. Ir. Toga H.

Panjaitan, A.A.Grad.Dipl.2

1 Master Student, Department of Architecture, Faculty of Engineering, Universitas Indonesia, Depok

16424, Indonesia 2 Architecture Department, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. This study aims to determine the lighting design of a room that can increase the

intensity of natural and artificial lighting while watching activities following applicable health

standards. The method used in this study is to compare the intensity of existing lighting with

the results of recommendations that are following health standards. The data obtained from

the existing measurements are analyzed and simulated with DIALux to find design

recommendations that can provide lighting intensity requirements following health standards.

The result is adding openings at the top of the room and adding artificial lighting can increase

lighting intensity according to health standards. These efforts can provide very effective results

in meeting health standards.

Keywords: watching activity, natural lighting, artificial lighting, lighting intensity

The Analyze Of Driving Behaviour As Traffic Accidents Factor

Lasma Rohanta Simamora1, Tri Tjahjono1 and Guritnaningsih2

1 Departemen Teknik Sipil, Universitas Indonesia, Kampus Baru UI Depok 2 Departemen Psikologi, Universitas Indonesia, Kampus Baru UI Depok

*e-mail: [email protected], [email protected], [email protected]

Abstract. Traffic accidents become a health problem in the world, where the increase in traffic

accidents every year continues to grow in Indonesia. Based on WHO data, traffic accidents

belong to the biggest killers after coroner’s heart disease and tuberculosis. The WHO Global

States report on road safety 2018 as much as 74% fatality in Indonesia is related to the accident

of motorcycle users. IRSMS Data Korlantas Polri age teenagers 15-19 years occupying the

second highest position as a victim and perpetrators of motorcycle accidents and the data

shows 44% of drivers do not have a driver’s license during the incident. The purpose of this

research is to analyze the traffic accident factor in the driver of the vehicle is the competence

of the driver. The research area is conducted in 3 areas of Indonesia its Depok, Samarinda,

and Gresik city. This research is conducted by collecting accident data as dependent variable

and collection of survey data of motorcycle users as independent variable. Secondary data

obtained from IRSMS Korlantas Polri and survey data is conducted through a questionnaire

(Google doc) to the community motorcycle users of each city as many as 100 respondents with

a group of age 15-50 years. The research data is done with chi aquare a = 0.05%. The total

number of accidents is 47% of teenagers aged 15-19 years and did not have a driving permit of 44%

of them. The high number of accidents performed by motorcycle drivers in adolescence occurs in

schoolchildren with middle school age and high school requirements have not been qualified to drive

motorcycles so found in the data of the accident actors is a driver who has no driving license.

Keywords: traffic accidents on two-wheeled vehicles, driving behavior as a factor in traffic accidents,

the relationship between drivers who already have SIM and the high number of accidents

Implementation of The Internet of Things (IoT) Using Wireless

Sensor Networks (WSN) in Monitoring Urban Air Quality

Sri Dewi Handayani1*

1 Affiliation Faculty of Infrastructure Development, Universitas Pertamina, South Jakata 12220,

Indonesia


Abstract. The impact of increasing of human population and development of urban

infrastructure and industrial centers, air quality has changed. The air that was fresh, now feels

dry and dirty. An Internet quality monitoring system based on the Internet of Things is able to

disseminate information related to air quality in an area, so that it will reduce the health impact

for people who will carry out activities outside the home. The community also able to know the

air quality that exists in their environment and the purpose of the area they will visit. Data and

information contained in scientific papers is the result of literature review. In this scientific

paper the writer wants to know the existing conditions of the implementation of the Internet of

Things based on Wireless Sensor Network (WSN) in monitoring urban air quality and to know

the opportunities and challenges of implementing the Internet of Things.

Keywords: air quality, Internet of Things, Wireless Sensor Network

Potential Biogas Production from Fish Waste in An Anaerobic

System

Hana Nisrina1* and Virgina Jane Ujiane2

1 Chemical Engineering, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia 2 Environmental Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia


Abstract. Rapid development of aquaculture and fishery in Indonesia increase the amount

disposals of fish waste that can damage the environment. The volume of fish waste bycatch in

Indonesia is 1,81 million tons per year and it is not utilized yet. As to handle this problem, the

anaerobic digestion of fish waste can produce valuable substances such as CH4 which can be

used as biogas. Solid and liquid of fish waste in abundance can be directly processed and

utilized in the reactor. The reactor is made at the location with the highest number of fish

processing industry, such as fishing port. The type of reactor is double polyethylene plastic

tank digester. With raw material of fish waste as much as 15kg per day it can produce biogas

7500mL per day (equal to 855 wH electricity). A simple biogas-producing reactor in every

fishing port will be able to reduce fossil fuel consumption and environmental impacts.

Keywords: alternative energy, anaerobic digestion, fish waste

District Energy System Planning. Integration of Distributed

Generation in the Power Grid for a Low-Carbon Future

Felicia Sutomo1,2, Widodo Wahyu Purwanto1,2,3*

1 Sustainable Energy System and Policy Research Cluster, Universitas Indonesia, Depok 16424,

Indonesia 2 Energy System Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424,

Indonesia 3 Chemical Engineering Department, Faculty of Engineering, Universitas Indonesia, Depok 16424,

Indonesia


Abstract. Global climate change and urban population growth are challenges for energy and

environmental regulation of carbon emissions. Problem arises in BSD, Serpong is the

increasing demand for electricity, gas and fuel which depended on national energy system

infrastructure, while it still relies on fossil energy and not mutually integrated between energy

networks. This study aims to obtain distributed generation that would create smart energy

system, which is integrated to power grid for low carbon emission. Optimization is done by

Low Emission Analysis Platform software (LEAP 2020). The result is obtained include

technology mix of BSD smart energy system and carbon emission reduction. It shows

integration of power grid and generation mix of solar PV rooftop, biomass incineration, and

Combined Cooling Heating Power (CCHP) for mitigation policy scenario. Carbon emission

reduction achieved from 453,424 t/CO2e for baseline scenario to 248,264 t/CO2e for

mitigation scenario in 2030.

Keywords: smart energy system, optimization, distributed generation, power generation mix, LEAP

Design of Smart Energy System in an Indonesian Megacity

Nadira Cahyaning Mentari1,2, Widodo Wahyu Purwanto1,2*

1 Sustainable Energy Systems and Policy Research Cluster, Universitas Indonesia, Depok 16424,


Indonesia


Abstract. Growth in urban population plays an important role in the global energy transition.

Cities in developing countries still rely on the national energy system, which dominated by

fossil energy and not integrated intersectoral. Thus, causing city GHG emissions to increase

every year. This research aims to obtain the design of smart energy system optimization

modeling on low carbon city pathways through a case study for the city of Jakarta, Indonesia.

The bottom-up modeling approach and optimization of the city energy system were done by

TIMES. The optimal results CO2 emissions reduced by 3.6% or equivalent to 2.26 MtCO2

compared to the current energy system in 2030. The technology portfolio including rooftop PV,

Combined Cooling Heating and Power (CCHP), MSW incineration, and solar water heater.

The findings can provide useful information for the municipality to encourage renewable

energy policies within the city

Keywords: smart energy system, decentralized generation, city energy system, optimization, TIMES

Effect of Cylinder Liner Thickness and Material on Stress

Conditions and Temperature Distribution of Diesel Engines

Thoufeek N A1*, Ajeesh A S2, Robin David2, Vinay V A1, Mohammed Arif1

1 UG Student, Department of Mechanical Engineering, Vidya Academy of Science and Technology

Technical Campus, Kilimanoor, Trivandrum, Kerala, India 2 Department of Mechanical Engineering, Vidya Academy of Science and Technology Technical

Campus, Kilimanoor, Trivandrum, Kerala, India


Abstract. The cylinder liner is one of the most important components in an internal combustion

engine that possesses the intricate structural arrangements coupled with complex patterns of

various operational loads. Due to the high combustion temperature produced during engine

operation, the inner periphery of the cylinder liner has every chance of large stress

accumulation. As a result, the surface wears off and there will be irregularities in the cylinder

surface which in turn affects the engine’s performance. The function of a liner is to provide

effective heat transfer and generate minimum stress within so that the engine can be highly

durable and used in the long run. Thus it is important to optimize the thickness of the cylinder

liner and cylinder liner material combination. The current study focuses on the influence of

liner thickness and material combination on temperature distribution and stress conditions in

the cylinder liner assembly. A 3D model of a Tata Indica V2 diesel engine was modeled and

investigated the influence of parameters such as the thickness of liner and material

combination on temperature distribution and stress conditions using ANSYS 14.0 under steady-

state condition. The cylinder liner material and its thickness were optimized to obtain optimize

heat transfer rate and to minimize the thermal stresses. The results showed that there is a

minimum stress accumulation at the inner periphery of the cylinder liner when the liner

thickness is 2.5 mm. The highest temperature was observed for the A383-Ductile iron

combination which is 189.330C. It is also observed that liner and cylinder block made of

aluminium alloys have minimum thermal stress and are least for the A356-A390 combination

(36.78 MPa). Hence it can be concluded that Aluminium alloys with high thermal resistance

are most suitable for liner material.

Keywords: Internal Combustion Engine, Stress, Temperature Distribution, Aluminium Alloys

Estimation of Methane Generation Rates from Denpasar City

Landfills 2020-2040

Leonardus Alvin Widi Vembrio, Ahmad Yusri Karim, Aqotrunnada, Ziyadatulkhair

M. Faruqi, Ariyanti Sarwono, I Wayan Koko Suryawan

Department of Environmental Engineering, Faculty of Infrastructure Planning, Universitas Pertamina,

Jakarta, 12220, Indonesia


Abstract. Denpasar City landfill capacity due to the delay in the development of waste to

energy sites had become a problem, and there was concern over the methane gas generation.

Methane is the main landfill gas which could be applied as a waste to energy (WtE) The

objectives of this research are to determine and projecting resulting from the emissions from

the operational landfill in the City of Denpasar from 2020 until 2040. The method used to

calculate the gas production using the app LandGem v3.2. The first step is the process of

collecting the necessary data such as data trace number of the population, the average amount

of waste produced by the population in a day and the characteristics of the landfill collected.

The second step is the process of calculating the data. The calculation of the population

projection carried out from the years 2020 to 2040 using the analysis method statistical tools.

Keywords: Methane Gas, Landfill, Waste to Energy

Reducing Plastic Straws Waste in Jakarta Bay: Study Case in

Ancol Tourism Park

Bambang Sutrisno1,2, Bening Kalimasada Aura Keindahan1,2, Wahyu Nugroho

Ramadhan1,2

1 Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Teens Go Green Indonesia


Abstract. There are 8.3 tons of plastic waste polluting Jakarta Bay every day, 2.17% of which

is the plastic straw that harms the marine ecosystem. The movement to reduce plastic pollution

in the ocean began to be intensively done. Ancol, as a tourism area at the Jakarta Bay, plans

to take part in the movement by issuing a policy to reduce the usage of the plastic straw in

2020. This research examines the usage of the plastic straw in Ancol by evaluating the food

and beverage (F&B) tenant’s behavior due to the appeal of Ancol authority. The data was

collected by interviewing the 83 tenants F&B in Ancol Tourism Park from September -

November 2019. The result shows that the usage of the plastic straw has reduced, with 44.58%

of the tenants implementing the full ban, 12.05% tenants adopting the partial ban, and 43.37%

tenants choosing no ban. This decrease will be a consideration for Ancol to issue the legal

policy.

Keywords: marine pollution, plastic pollution, plastic straw, environmental policy, Sustainable

Community

02S u s ta i n a b l e

C i t y, C o m m u n i t y,I n f r a s t r u c t u r e

a n d T r a n s p o r t


The 5th

2020

Information System Development of Knowledge Base Integration

Management System Quality, Safety and Environmental to

improve organizational performance in Construction Company

Retno Apriyati1

1 Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia

Abstract. Development in Indonesia showed high progress in the economics but had low

progress for social; institutional; and in environmental sectors. Furthermore, Indonesian

Construction Company still inhibited by low competitiveness; along Safety system management

application; safety record and bad occupational health. Based on Indication in above, it’s

necessary to apply an integrated management system between Quality, Safety and

Environmental for manage the projects construction. The Implementation of an integrated

management system, it’s necessary to improve with online integrated management system; due

to accelerated targets achievement for real monitored all business aspects process. Therefore,

this research aim to develop information system of Knowledge Base Integration Management

System of Quality, Safety and Environmental to improve organization’s performance on

Construction Service Company. This research was conducted with case studies and expert

validation for the integration model, objectives and risk relationships. The results of the study

were developed into an information system based on the Knowledge Base Integration

Management System of Quality, Safety and Environmental.

Keywords: knowledge base, Process Integration, Quality, Safety and Enviromental System

Management, organizational performance in Construction Company.

The Impact of Forest Activity in Watershed to The Discharge of

The River and The Impact to The Environment

Asalam Riady Christian, Daniel Martua, Juan Ferdani, Ruben Christopher, Simon

Linggom


*e-mail: [email protected], [email protected], [email protected], [email protected], [email protected]

Abstract. This paper analyzed the impacts of land cover change on the watershed by the

activity in the forest. This forest activity including wood logging and deforestation that are

generally carried out to convert land functions into settlements or industrial areas. These

activities itself have an impact on the quality of water flowing through the watershed and alters

the discharge, chemical, and physical properties of water. The results of the land cover changes

will reduce the water infiltration area and increased the discharge of the water in the river.

The change of the river discharge will be modeled by Win-TR 20. The increment of the river

flow carries out the waste produced by those activities and reduced the quality of water. To

minimize the impact we need good and sustainable land management that will reduce the

change of land cover and improve the quality and flow of watershed..

Keywords: Environment Sustainability, Watershed Management, Water Engineering

TIME TO COLLISION THRESHOLD DETERMINATION

BASED TRAFFIC CONFLICT TECHNIQUE FOR MERGING

AREAS IN SIDOARJO CITY FREEWAY GATE

Firdaus Canggih Pamungkas1 , Tri Tjahjono1 , Andyka Kusuma1

1 Civil Enginering, Unversity Of Indonesia, UI- Depok, 16424, Indonesia


Abstract. This paper evaluate the traffic safety of the merging area on freeway based on traffic

conflict techniques in the running traffic conditions, as a non-accident traffic safety measure.

The object of this research, merging areas on Sidoarjo City Freeway. Using Drone to take

video for data processing techniques. The time for a collision (TTC) is determined by

evaluating the traffic conflict using the tracker application. Then, the severity threshold of TTC

is determined. The threshold of serious and general lane-change conflicts lies between 0–2.9 s

and 2.9- 5.8 s,respectively; the threshold of serious and general rear-end conflicts lies between

0–0.73 s and 0.73–3.33 s, respectively. The TTC measurement in this paper can offer

comprehensive coverage with refined scales, adding to the understanding of traffic conflict

modeling in merging areas.

Keywords: time to collision, traffic safety, freeway marging area.

Optimization of Transportation and Emissions Costs in the

Export and Import Industry Using the Naïve Bayes Classifier

Model

Kresna Bima Sudirgo1 and Farizal1

1 Industrial Engineering Department, Faculty of Engineering, Universitas Indonesia, Depok 16424,

Indonesia


Abstract. Transportation costs are one of the components to get the maximum profit, but now

the level of emissions resulting from transportation activities also becoming a concern in the

industry. Optimum models of cost and emissions components required to get the best scenario

that has low costs and emissions to support green industrial commitment. To achieve a model

that can resembles the original condition on specific place we will use the Naïve Bayes

classifier method. This model will classify the environmental friendliness and cost efficiency

incurred based on weight and volume measurement based on existing database acquired from

specific area, at this study researchers will use multiple transportation scenarios from

industrial zones that had activity through the Tanjung Priok port. As result a classifier tools

that can classify green level, cost level and suitable characteristic of goods (whether it’s tends

to meet weight or volume) based on Naïve Bayes classifier method.

Keywords: Naive Bayes classifier, Transportation cost, Emissions, Characteristic of goods, Vehicle

type

Effect of Climbing Lane on Traffic Performance in Cipularang

Toll Road

Diah Kartika1*, Tri Tjahjono1 and Jachrizal Sumabrata1

1 Civil Engineering Department Faculty of Engineering, Universitas Indonesia, Depok 16424,

Indonesia


Abstract. The level of traffic safety on Indonesian toll roads are still poor. This paper study

the effect of climbing lane to the traffic performance as a result of improper geometric design.

The inappropriate conditions are the auxiliary lane on the nearside of the road instead on

farside of the road and the end of climbing /merge lane located before the crest instead of after

the crest of vertical alignment. The result very slow heavy vehicles merged to the normal lane

resulting bottleneck caused by shockwave phenomenon. This study aims to model shockwave

caused by sudden transition as a result of bottleneck using LWR kinematic wave model using

analyze traffic flow dynamics,particularly estimating shockwave boundary and speed. FCD

surveys is conducted to collect traffic characteristic data and traveling time. Additional light

vehicle lanes is designed on the right side before the additional lanes so that it won't distrupt

the trucks flow.

Keywords: bottleneck, shockwave, LWR

QUALITY ANALYSIS OF TRANS KOTA TANGERANG

SERVICE BASED ON CUSTOMER SATISFACTION DURING

PANDEMIC

Fikri Arrasyta1, R. Jachrizal Sumabrata1, Andyka Kusuma1

1 Civil Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. The Tangerang City Government has implemented BRT policy as public

transportation since December 2016 as convenient, safe, clean, and affordable transportation

to reduce the use of a private vehicle. Trans Kota Tangerang is demanded to improve the

quality of its services because the number of passengers in each year has been increased. The

purpose of this study was to analyze the factors in determining user satisfaction in Trans Kota

Tangerang by identifying these factors. The studies are limited to Trans Kota Tangerang in

corridor 2 (Terminal Poris Plawad-Cibodas). Since the result of the investigation is not

finished yet, this paper wants to demonstrate the indicators related to service quality, even the

pandemic is still ongoing. The research using PLS-SEM (Partial Least Square-Structural

Equation Modeling) analysis conducted to determine customer satisfaction to quality of

service.

Keywords: Service quality, Passenger's satisfaction, Trans Kota Tangerang

EFFECTIVENESS OF LIGHT GOODS VEHICLE AND

MOTORCYCLE IN GREEN LAST MILE DELIVERY

SYSTEM

Fahriansyah1*, Nahry1 and Jachrizal Sumabrata1


*e-mail: [email protected]; [email protected]; [email protected]

Abstract. E-commerce growth has led to increased use of Light Goods Vehicle and motorcycle

for delivery package in Jakarta. Therefore, the last mile movement in downtown also increased,

so air quality has decreased. According to literature, external costs due to road transportation

which has the highest value came from exhaust emissions. The purpose of this study is to

analyze the external costs of using Light Goods Vehicle and Motorcycles in Last Mile Delivery.

This research proposes the analytical method consisting: (1) Analysis of emission loads from

Light Goods Vehicle and Motorcycles for the Last Mile Delivery activities, (2) Analysis of the

external costs of the air pollution segment, (3) Analysis of effectiveness between Light Goods

Vehicle and Motorcycles. This research is expected to be used as references for stakeholders

and government to more attention to environmental impacts because this thing.

Keywords: Last Mile Delivery, External Cost, Exhaust Emission

SIGNALED PEDESTRIAN CROSSING USING FUZZY LOGIC

METHOD

Ade Rachmatˡ, Tri Tjahjono1, Jachrizal Sumabrata1

1 Faculty of Civil Engineering, Universitas Indonesia, Depok 16424, Indonesia

*e-mail: [email protected]; [email protected]; [email protected]

Abstract. The research location at the Pelican Crossing University of Indonesia, the purpose

of this paper is to design an optimization of the signal of the crossing lights that can work

automatically with fuzzy logic-based control. In connection with the current timing of the signal

crossing traffic lights that still use the conventional system that is the time of the crossing signal

lights still using fixed time, it is necessary to have an automatic control system that can be used

to control the signal lights. Fuzzy logic system can be more efficient in optimizing the signal

settings for the crossing of the road, by calculating the length of the vehicle queue and the

density of the number of crossers in the location. By using the basic rules of this fuzzy logic

system, it can extend or terminate crossing signal lights according to the traffic situation and

automatically.

Keywords: Fuzzy Logic, Pedestrian density

The Solution of Traffic Signal Timing by Using Fuzzy Logic

Algorithm

Rohiqum Noberta1, Jachrizal Sumabrata2, Andyka Kusuma3

1 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 3 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Signal timing is the best solution to produce optimal traffic flow performance based

on the availability of the Advanced Stop Lines (ASL) and traffic light controller becomes

imperative. In this study propose an integrated model combines Fuzzy Logic and Algorithm to

controlling the proposed traffic conditions, based on IF-THEN fuzzy rules as a basis for

decision makers. The results showed geometric planning of commercial road types, flat, speed

of 60 km/h and the width of the road each phase of 15-19 meters with green time Advanced

Stop Lines motorcycle 5 seconds. Intersection performance at peak hours, has a capacity (C)

the number of vehicles 1309 smp/hour and degree of saturation (DS) 0.91 (very solid). Transyt-

ASL optimization results show an average reduction of 31% delay and there is an increase in

capacity compared to conventional. The proposed solution can improve the performance of

traffic lights to be implemented in BSD Tangerang.

Keywords: Intersection Performance, Capacity, Degree of Saturation, Advanced Stop Lines (ASL),

Fuzzy Logic

Traffic Management of The Construction Zone on The Freeway:

Analysis of Optimal Transition Zone to Keep Performance of The

Road

Load Nainggolan1, Andyka Kusuma, S.T., M.Sc., Ph.D.1 and Ir. Tri Tjahyono, Ph.D.1



Abstract. Setting up traffic regulations are not enough to maintain road quality, and thus need

for routine physical maintenance on the damaged road sections arises. For that reason, traffic

management becomes necessary at corresponding construction zones in order to ensure the

safety of both the freeway users and construction workers. Therefore, this research aims to

study the effects of construction zones on traffic conditions, in terms of its LOS. The emergence

of construction zones allows for only selected few of the existing lanes to be used, creating

constringency on freeway and thus requiring transition zone to be made. The analysis in this

research uses Vissim to understand the relationship between transition zones and traffic

conditions. The model made shows that larger taper lengths in transition zones create better

traffic LOS. From this analysis, it can be concluded that the minimum taper length of 370,5 m

is required to produce LOS C.

Keywords: Freeway, Transition Zone (Taper), Road Performance, Vissim

Comparison of Cordon and Corridor-based Road Pricing on

Alternative Roads Performance:

A Preliminary Study on Jakarta Case

Novra Tilova Anumasta1*, Sutanto Soehodho1 and Nahry1



Abstract. Most road pricing studies focus on its effect only to arterial road network level. Road

users tend to detour and choose alternative route to avoid the charging zone, in case of Jakarta

road network especially in CBD area, many collector or local roads around the designated

zone will be affected. This paper is part of ongoing study that aims to compare the effects of

two schemes of road pricing—namely cordon-based and corridor-based—until collector road

network level. ATP-WTP figure from small sample will be used as the basis for the penalty

charge. Available road network and historic traffic data of Jakarta will be used for modelling.

Since the result of the study is not finished yet, this paper wants to demonstrate the methodology

that will be carried out in this study.

Keywords: alternate routes, ATP-WTP, cordon-based, corridor-based, road performance, road pricing

An analysis of vehicle speed attribute assessments using speed

restrictions

Teguh Patriot1, Andyka Kusuma, Nahry



Abstract. Today Korlantas Polri has implemented a policy to impose speed restrictions using

speed cameras on several toll roads and several arterial roads in the city of Jakarta. This

research aims to analyze vehicle speed restrictions based on two speed parameters, the mean

and the variant through signs and speed cameras in the control zone on the Jagorawi toll road.

The result of the research shows that on Jagorawi toll road where the speed limit is 60 - 100

km/hour, generally 7% of the passing vehicles exceed the speed limit and 33% exceed the speed

of 60-80 km/hour under the intervening condition of speed cameras. Furthermore, the average

speed and speed dispersion in the existing condition is 74.6 ± 10.2 km/hr, while under the

intervention of speed limit is 65.9 ± 8.6 km/hr. Vehicles that comply with the speed limit under

the intervention of speed cameras are 59% or 4142 vehicles from 7022 of vehicle population

categorized into 14% or 968 passenger cars, 9% or 664, freight cars, and 14% or 1248 buses

with speed limit of 60-80 Km / Hour. Meanwhile, the average speed under the existing

condition is generally 74.6 km/hour and 65.9 km/hour under the intervening condition, falling

into the range/confidence interval of 74.4-74.9 in the existing condition and 65.7-66.1 under

the speed limit intervention using speed cameras with a confidence level of 95%. It can be

concluded that the implementation of speed limit intervention using speed cameras on

Jagorawi Toll Road Km 16-26 can significantly reduce speed by 8.7% at an average level of 9

Km / Hour by 67%.

Keywords: Effectivities; Speed management; Speed camera; Transportation system

Green Property Brochure: Do Green Users prefer

Green Residentials?

Galuh Talitha Ayuthia1*, Ova Candra Dewi1, and Toga H. Panjaitan1



Abstract. This paper discusses on green residential property brochure as a medium of

research to find out whether green building users are also motivated to purchase green

residential property. This paper focuses on mapping previous studies on green residential

property factors, interpreting, and visualizing them in a form of green residential property

brochure. Factors that affect people in purchasing green residential property are generally

offered by green building concepts, such as efficient use of resources, low building operational

costs, safe and healthy environment, access to green space, mobility, community planning, and

landscape are stated in previous studies. Other aspects such as layout technique and pricing

will be added. As a result, the visualizations of those criteria in a form of green property

brochure are developed. This paper may help readers to provide new insights on the criteria

of green residential property and its visualization in a green property brochure.

Keywords: Green Property, Green Building, Green Building User, Green Residential Property

Brochure

A Preliminary Study of The Production of Unfired Clay Brick

with Reinforcement

Novita Hillary Christy Damanik1*, Dalhar Susanto1 and Emirhadi Suganda1



Abstract. Clay brick is one of the most widely used building materials. A commonly used brick

production method is by combustion processes, which contribute to carbon emissions and

negatively impact the environment. The combustion process aims to provide the strength and

stability of clay. Without combustion, this clay has different properties to that which is burned.

Thus, one alternative in the brick making without combustion is to add additive material into

the clay mixture that serves as a reinforcement. This paper is an early stage of research aimed

at seeing the process of brick production without combustion with the addition of natural fiber

and bio-enzyme and see how it affects the dimensions, textures, and colors. The method used

is an experiment with three variations of the mixture to see the visual differences. Results

showed that there were several challenges in producing bricks and differences related to the

visible properties.

Keywords: unfired clay brick, soil reinforcement, bio-enzyme, sugarcane bagasse fiber

Eco Bricks Made from Waste Plastic Bottles and Recycled

Concrete Aggregate

Shimol Phiip1*, Deepika S2, Robin David3

1 M. Tech Student, APJ Abdul Kalam Technological University, Department of CE, Saintgits College

of Engineering, Kottayam, Pin-68653, Kerala, India 2 M. Tech Student, APJ Abdul Kalam Technological University, Department of ECE, TKM College

of Engineering, Kollam, Kerala 3 Department of Mechanical Engineering, VAST TC, Kilimanoor, Trivandrum, Kerala, India

*Corresponding Author, Email: [email protected]

Abstract. The enormous amount of waste plastics and waste concrete are being generated

every year by commercial industries and municipalities of developed and developing countries.

The most commonly found plastic wastes are plastic bottles, and since they are non-

degradable, they cause a great menace. The problems with landfills and global carbon

emissions can be mitigated by exploring new opportunities to reuse concrete and plastic wastes

into alternative resource materials. The present study aims to develop environmentally friendly

construction material by combining the aforementioned waste products as a replacement for

brick. The crushed recycled concrete aggregate collected from the laboratory was filled in a

waste plastic bottle with an adequate amount of water content and was sealed. Waste plastic

bottles containing crushed recycled concrete aggregate with size ranging from 150 µm to 4.75

mm (150 µm, 300 µm, 425 µm, 600 µm, 2.36 mm and 4.75 mm) and water content varied from

0 % to 10 % (0%, 2.5 %, 5 %, 7.5 %, and 10 %) were investigated for determining the optimal

aggregate size and water content to get maximum compressive strength. The eco brick thus

developed was tested for compressive strength and salinity exposure. Test results showed that

the maximum compressive strength for all the particle size range is obtained at 5% water

content. Furthermore, exposure to a 3.5% saline solution for 28 days did not substantially

affect the compressive strength of these bottles. Optimum values of compressive strength of

developed eco-bricks were compared with conventional clay brick, fly ash brick, and other

agricultural waste-based bricks. The so developed eco brick utilizing recycled concrete

aggregate and waste plastic bottles consume zero-energy, are emission-less, cheap, and also

eliminates the need for disposal of plastic bottles and concrete waste materials

Keywords: concrete aggregate, global carbon emissions, eco brick, compressive strength

Criteria Analysis For Dry Port Location to Support Freight

Transport Activities at Surabaya Container and Teluk Lamong

Terminal using AHP Method

Rutma Pujiwat1*, Nahry1



Abstract. The transportation of goods from industrial locations to ports is still dominated by

trucks. The increasing trend of loading and unloading activities at Surabaya Container and

Teluk Lamong Terminal, as well as limited stacking yard, will cause congestion in the port

zone and increasing travel time, thus has an impact on increasing logistic cost. The dry port

concept as an extension of the seaport is expected to increase the effectiveness and connectivity

of good transport using a multimodal transportation system. Weights of location criteria are

needed to determine the location of dry port. Therefore this study has the purpose of obtaining

the importance of criteria of dry port locations in East Java. The AHP method is used to analyze

the criteria by submitting questionnaire form to the expert respondent of stakeholders related

to the development of dry port, e.g., government, industry and logistics. The results show that

proximity to industry, railroad and highway are the three top criteria determining the location

of a dry port.

Keywords: dry port, multimodal, location criteria, AHP method

A Novel Implementation of “Filtered- Reconstruction ICA

Algorithm” For Blind Source Component Separation

Deepika Sasia*, Dhoulath Beegum Ja, Sheeba Ra

Department of ECE, TKM College of Engineering, Kollam-691005, Kerala, India

Abstract. The Independent Component Analysis (ICA) is a statistical signal processing

approach that possesses emanating novel practical application in domains namely blind

source extraction, mixed images or sounds and evaluation of various sorts of data or feature

separation. Reconstruction Independent Component Analysis (RICA) is one among the

predominantly used ICA technology. RICA algorithm sorts out the complications in

optimization caused due to ICA. This technique is a conventionally used mechanism in order

to estimate airplanes and also equally utilized in the biomedical field for extracting out desired

signals from the interference mixtures like electrocardiogram (ECG), magneto

encephalography (MEG) and electroencephalogram (EEG). Henceforth, RICA is

accomplished for the real time processing of signals. In this paper, a novel algorithm is

proposed to be developed based on RICA and a Least Mean Square (LMS) adaptive filter. The

idea behind this paper is to extract the wheeze intensity from a mix of cry and wheeze of infants

infected with the disease – Bronchiolitis. Due to the cry of babies, many a times the intensity

of wheeze cannot be evaluated, which leads to improper medications or even mortality. The

aim of this project work is to implement an effective blind component separation algorithm in

which a RICA method is used to extract the wheeze components and further an LMS filter is

used to enhance the SNR, so that even a remote doctor could prescribe appropriate medication

based on the wheeze intensity.

Keywords: Independent Component Analysis, RICA, ECG, MEG, EEG, Bronchiolitis, Least Mean

Square adaptive filter

Element Design Street Infrastructure

Using Sustainable Street Concept

Finky Larasati1, Ayomi Dita Rarasati1* and Antony Sihombing2

1 Department of Civil Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Department of Architecture, Universitas Indonsesia, Depok 16424, Indonesia


Abstract. Street is public space that can accommodate buildings, people, vehicles, utilities,

vegetation, signage, street furniture and lighting. The street design in cities are car and

automobile orientated. Sustainable Street can defined as a concept to créate tree aspects are

movement, ecology, and community. Each aspect must be integrated with each other to

implementing sustainable Street and support economic value of the street corridor. The method

this paper is using literature review of 50 relevant publication (paper, report, article, and

thesis). Strategis for implementing sustainable Street has four themes that are movement plus,

neighborhood plus, downtown revitalization plus, and stormwater plus. The result of this paper

is concluding some recommendations elements design to implementation of sustainable streets

that are derived from the theoretical study to well design a sustainable street for a good street.

Keywords: ecology, economy, green street, movement, street design, sustainable infrastructure,

sustainable street.

Effects of Zeolite Grain Size and Activation Temperature in

Bioretention System on Improving The Removal Efficiency of

Lead and Zinc in Rainwater Runoff

Elgin Martama1* and Nyoman Suwartha2

1,2 Affiliation Faculty of Engineering, University of Indonesia, Depok 16424, Indonesia


Abstract. Bioretention, as an alternative technology for rainwater runoff treatment, is highly

influenced by various factors. Previous study using bioretentions with various media

composition and a plant produced effluents that exceed the water quality standard. This study

aims to increase the Pb and Zn removal efficiency using modified bioretentions. Three pilot-

scale bioretentions size of 33×33×80 cm3 respectively with a combination of 2 plants and the

same media (zeolite: quartz: compost: soil =6:2:1:1), while the zeolite grain size and

temperature activation are simulated. The discharges of synthetic runoff with initial

concentration variations of Pb and Zn from the 3 bioretentions resulted in increasing removal

efficiency of Pb and Zn compared to previous studies (mean removal of Pb =99.95% and Zn

>98%) and effluent concentrations had met the water quality standard. The smaller zeolite

grain size and higher activation temperature have proven to increase the efficiency removal of

Pb and Zn.

Keywords: a combination of plants and media; bioretention; removal efficiency; water quality

standard; zeolite activation; zeolite grain size

Light Shelf to Reduce Risk of Fall for older Adults at Stair

Tika Hanjani1, Ova Chandra Dewi2 and Toga H. Panjaitan2

1 Master Student, Department of Architecture Faculty of Engineering, Universitas Indonesia, Depok

16424, Indonesia 2 Department of Architecture Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia

*e-mail: [email protected] , [email protected] , [email protected]

Abstract. This study aims to maximise daylight and artificial light usage with light shelf as a

strategy to achieve uniformity and to reduce fall risk for older adults in a private house.

Daylight and artificial light maximise through simulation conducted in a private home located

in Tangerang, Indonesia. Simulation with DiaLux used to measured average illuminance level

(lux) and uniformity on designated point with the surface task set on selected height. Light shelf

with 0° and 54° angle applied not only during clear and overcast sky condition but also during

summer-winter solstice to maximise light penetration into the measuring point. During the

study, we found that light shelf with 54° to able to maximise uniformity for older adults to

perform daily activity in the stair area safely.

Keywords: light shelf, older adults, fall risk, daylight, artificial light, uniformity

Effect of Lighting Quality on Myopia Progression

Kartika Rahmasari1*, Dr-Ing. Ova Candra Dewi, S.T, M.Sc2 and Dr. Ir. Toga H.

Panjaitan.,A.A.Grad. Dipl2

1 Master Student of Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Architecture Department, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. This study seeks to analyze the effect of lighting quality in a room of myopia disorder

occupant based on personal experiences. Three representative members of a family were

investigated about their myopia progression history within two years. Furthermore, a lighting

simulation was held on their bedroom to examine the quality of lighting based on illuminance

level (E) and uniformity level (Ur) on three selected room and compared to lighting standard.

This study found out that the users with the highest progression of myopia within two years

occupied the room with the poorest quality of light. Therefore, it is primarily concluded this

study shows that there is an effect of low-quality lighting design to a myopia progression.

Keywords: Lighting Quality, Myopia Progression, Illuminance Uniformity, Visual Comfort

The Idea to Redesign the City Center of

Kebon Sirih, Central Jakarta

Muhamad Agra Adhiprasasta1, Evawani Elisa2*

1 Student of Master Degree Program in Architecture, Universitas Indonesia, Depok 16424, Jawa

Barat, Indonesia 2Associate Professor in Department of Architecture, Faculty of Engineering,Universitas Indonesia,

Depok 16424, Jawa Barat, Indonesia


Abstract. . This research focused on the contemporary situation of the city center of Kebon

Sirih, Central Jakarta. The area has evolved from a historical part of the colonial city called

Weltevreden into one of the most expensive areas in Jakarta and become a Central Business

District (CBD). As a result, the local community who live in kampung Kebon Sirih started to

feel threatened by the private enterprises that demand for a new image of an exclusive

community. This paper revealed the idea of how to maintain local communities by adapting

their lifestyles, which can create a symbiotic relationship between the upper middle class and

the lower class for the development of Kebon Sirih. We also proposed the idea of an urban

design solution to transform the existing public spaces into a more effective public domain with

diverse of open spaces that offer many opportunities and possibilities..

Keywords: Kebon Sirih, public space, Kampung, urban design idea, Transformation

Literature Review: Community-Based Planning as a Response to

Rapid Urbanization

J K Widhyanti1 and A Gamal2*

1 Postgraduate student, Department of Architecture, Faculty of Engineering, Universitas Indonesia,

Jakarta 16424, Indonesia 2 Corresponding Author & Assistant Professor, Department of Architecture, Faculty of Engineering,

Universitas Indonesia, Jakarta 16424, Indonesia


Abstract. What did we know and not know about the relationship between urbanization and

planning practices? Rapid urbanization can have a lasting impact on urban areas. The

coexistence of different communities with diverse backgrounds and interests can lead to

complex social dynamics between local communities and newcomers. In this research, we

review the existing body of literature to understand whether social problems caused by

urbanization can be solved through community-based planning. We found that the government

plays a significant role in community-based planning when it comes to solving complex social

urban problems in the wake of rapid urbanization.

Keywords: urbanization, planning, rural-urban migration, community, community-based planning

Analysis and Lighting Intervention of Residential

Building that Used as Office Activities

Mochammad Alif Fathurahman1, Dr.-Ing. Ova Candra Dewi S.T., M. Sc.2, Dr. Ir. Toga

H Panjaitan A. A. Grad. Dipl3*

1 1 Master Student of Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Department of Architecture, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 3 Department of Architecture, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia

*email: [email protected], [email protected], [email protected]

Abstract. The aim of this study is to know the interventions that needs to do in the residential

house that be used as office activities and also how influential the interventions affect to the

occupants’ health and activities. Methods are focuses on doing sampling manually based on

SNI 16-7062-2004, modelling simulation with DIALux Evo Software and interview with

occupants. After the interventions have been done, the lighting value (lux) has increased. The

most important thing of the increased lighting value (lux) in the building is that these values

have achieved the recommended lighting value target of SNI 03-6575-2001 for office space:

350 lux. It is expected that this interventions on daylight and artificial light can improve the

quality of work of occupants and affect the user's eye health and avoid occupants from the risks

of disease that can arise due to lack of lighting when doing work activities.

Keywords: daylight, artificial light, office, residential building

The Evaluation of Utilization of Household Gas Allocation to

Increase The Profits Using The Value Engineering Method

Muhammad Brajaka Kusuma1 and Mahmud Sudibandriyo2


*e-mail: [email protected] 2 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. The growth of city gas infrastructure by business entities is currently considered

slow and does not meet government expectations. The slow development of infrastructure is

due to the low profitability of the business. The government is committed to funding the

development of the city's gas network infrastructure every year, but it remains can not help

operators to cover the operational costs. The solution is offered to optimize the allocation of

city gas is by evaluating the economic impact of the city gas infrastructure in area X, Y and Z

with value engineering method. This study focuses on examining scenario alternatives to

determine an optimum city gas utilization scheme. The results showed the cashflow of city gas

from the existing area X, Y and Z are minuses. Those areas will make profits and can cover the

operational costs if there are the development of small customers with IRR>12%. The

household customers are not recommended to achieve the economic scale of city gas, except

the government’s funding and the high volume of gas usage.

Keywords: city gas, allocation, evaluation, value engineering, IRR

Literature Review: Potential of Liquefaction Hazards on

Saturated Loose Sand with Shaking Table Large Scale Test

Siti Prizkanisa1*, Widjojo Adi Prakoso1, Dandung Sri Harninto1



Abstract. Liquefaction is the melting process of the soil due to excess pore water pressure in

the soil cavity during an earthquake. There are many test methods to determine the potential

hazards of liquefaction, one of them is the large scale shaking table test. The purpose of this

literature study is to look at the potential hazards of liquefaction by conducting an experimental

study modeling the liquefaction of saturated loose sand in a large scale shaking table test.

From the existing literature study it was found that the large scale shaking table test had

several advantages in seeing the potential hazards of liquefaction. With the addition of

instrumentation such as an electric piezometer and an accelerometer mounted on the shaking

table, it can help in quantifying the mechanism of liquefaction quantitatively as seen from the

ratio of the increase in excess pore pressure and the maximum ground acceleration.

Keywords: liquefaction, shaking table, excess pore water pressure, saturated loose sand

Impact of Lean Tools (Standardized Work, 5S, and Line

Balancing) in Aluminum Formwork to Improve Project Time

Performance

Elgrytha Victoria T1, Dylan Sastilaya1 and Gerardus Blesto K1*



Abstract. Aluminum Formwork (Aluform) is a method that supports Green Construction since

it is reusable and able to substitute wood uses. Regarding the fact that it doesn’t need experts,

the diverse culture and skill of workers in Indonesia may affect delay in project performance.

This study aims to determine the impact of Lean Tools on Aluform at construction sites. The

method of this research is measuring the time used for each formwork element in a week to

estimate the efficiency by reducing moving, waiting, overprocessing, and defect. The result is

shown by the correlation between average work duration times the number of components.

Standardized work enhanced by 5S (Sort, Set in Order, Shine, Standardize, Sustain) and line

balancing improved the formwork time performance up to 66%. In conclusion, the Lean

approach on Aluminum Formwork performs a positive impact on project time performance

Keywords: Aluminum Formwork, Lean Tools, standardized work, 5S, line balancing, time performance

Architecture of Threading and Tracing: Crack, Crease and Cuts

as a Mechanism to Fabricate Architecture

Stanley So

Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia

Abstract. This paper proposes a design approach based on the knowledge of threading and

tracing the everyday, being through there observing creases, cracks and cuts in a context

enabled us to sense how society threads the everyday. Through threading and tracing

architecture is considered as an act of negotiation where it interconnects fragments of society

and has the ability to interpenetrate the threading made by society. The discussion in this paper

begins with understanding architecture as an act of weaving the complexities and diversities

in society, continued with understanding the main component of weaving: threading and

tracing. Through an explanation of threading and tracing this paper will explain the benefit of

observing micro traces such as creases, cracks and cuts enabled us to see glimpses of vectors

applied in the everyday and ending the discussion with its application in architecture and how

would this design approach benefit architecture..

Keywords: threading, tracing, negotiation, weaving, creases, cracks, cuts, everyday, vector

Theoretical Study of Urban Memory

as Sustainable Urban Design Approach

Theodorus Cahyo Wicaksono1, Antony Sihombing2*

1 Student of Master Degree Program in Department of Architecture, Faculty of Engineering,

Universitas Indonesia, Depok 16424, Indonesia 2 Lecturer in Department of Architecture, Faculty of Engineering, Universitas Indonesia,

Depok 16424, Indonesia


Abstract. Urban Design has seen paradigmatic shifts towards more locally embedded design

and emphasizes identity. The elements of the city will change in the element of time, which is

always moving sustainably. However, some essential things that contain a strong identity

should be maintained. In order to strengthen the image and identity of the city, urban design

requires memories. Urban memories are necessary for the cities to develop in good planning

by not leaving their true identity. A city, with urban spaces in it, has an in-depth relationship

with people who inhabit within, and also with the actual experiences and memories. This paper

will discuss the theoretical study of urban memory as an element in forming the images of the

city. By considering the holistic sustainability of cities, urban memory is a way not only to

develop by answering the problems and challenges of the times but also by having a sustainable

identity. In this paper, there will be a theoretical study of memory until urban memory as urban

representation. Such a review of memory as an urban representation offers a theoretical basis

and method. The theoretical basis can be a paradigm that is considered in the practice of urban

design and planning, especially for those who consider urban memory as forming the identity

and sustainability of the city.

Keywords: memory, urban, identity, sustainable

Optimization of Bedroom Natural Lighting in 1:3 Shape South-

North Dwelling

Trianasari Puspadewi1*, Dr.-Ing. Ova Candra Dewi, S.T., M.Sc.2 and Dr. Ir. Toga

Panjaitan, AA Grad. Dipl.2


16424, Indonesia 2 Department of Architecture, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. This study aims to examine the use of several devices effectiveness to obtain an

optimal lighting system that can be applied to elongated simple dwelling. The use of diaLux is

done to simulate the intensity of the light in the existing conditions of a dark room and a very

bright room in the morning, afternoon, and evening. The simulation is done when the sun is at

its highest point North and highest in the South. Several simulations with different opening

sizes are carried out to achieve optimal natural lighting. Then the results are compared with

the standards recommended by SNI. After intervention, the rooms start to show an increased

lighting quality through the use of side lighting, sun shading, and skylight with a 4% opening

of the room area and reach optimal illuminance until 10%. This lighting system has the

potential to increase the energy efficiency of residential lighting.

Keywords: Natural lighting, bedroom, 1:3 shape, elongated dwelling, South-North dwelling, skylight

Water Splitting Based Artificial Photosynthesis as a Means of

Urban City Sustainability Planning; Indonesia.

Maurice Handi1, Muhammad Kachfi, Adrian Primandanu, Goldy Firman


Email: [email protected], [email protected],

[email protected], [email protected]

Abstract. By 2018, a report by Carbon Brief Profile stated that carbon dioxide (CO2) emission

in Indonesia was around 557.5 million tonnes, to put into perspective it was a 3.40% of annual

increase since 1999 which was reported at 297.6 million tonnes. As Indonesia progresses

further, especially with Indonesia thinking to expand into a new capital city. Thus, the means

of sustainability is needed more than ever. Hence why artificial photosynthesis of CO2 within

the system of urban city sustainability planning is vital to Indonesia. Artificial Photosynthesis

itself utilises the oxidation process by using a water splitting method in which photoanode are

oxidising the water and the photocathode that might have a product of synthetic gas, as in H2.

Thus, reducing the CO2 whilst producing a synthetic gas which can be used as a renewable

energy. Therefore, artificial photosynthesis might be what Indonesia needed to elevate further.

Keywords: Artificial Photosynthesis, Water Splitting, Sustainability, Oxidation Process, Synthetic Gas

Literature Review Related Utilization of ICT in Planning

Earthquake Early Warning Systems: Meta-Analysis

Hasbi Rianda

Department of Civil Engineering, University of Indonesia, Depok, Indonesia

Email: [email protected]

Abstract. This paper aims to analyze the use of ICT in planning the Earthquake Early Warning

System. By the development of information and communication technology based on mobile

phones, information and communication will not be difficult in handling disasters. Therefore

efforts to plan for earthquake early warning systems must be prepared efficiently to reduce

disaster risk. The method used in data collection is literature study and expert validation. The

literature review of the mobile phone-based earthquake warning system is important in that it

summarizes key findings and study suggestions not only for practitioners but also for

forecasting future academic research trends in this field. The results of the analysis show that

mobile-based information and communication technology can be applied to earthquake early

warning systems and can reduce the risk it causes. Mobile phone users who are victims of

disasters can receive assistance as quickly as possible.

Keywords: Earthquake early warning systems, Mobile phone, Literature.

Hydrogen systems for off-grid villages

or communities in Indonesia

Anak Agung Krisna Ananda Kusuma1, Michael Jehan Pangestu1,

Rithwik Chandur Nathani1, and Zakaria Bustami1



Abstract. In this paper, solar energy storage via pressure vessel will be explored and

compared to the current lithium ion battery storage via cost and benefit analysis. The focus of

this paper is to calculate which method is most reliable for storing excess solar energy which

will take into account: total storage capacity, influenced by cost of installation and

maintenance, and efficiency of storing solar energy. The total energy gained can be calculated

based on storage capacity which takes into account the energy density, installation,

maintenance, and land use costs. Efficiency of hydrogen storage will be calculated by dividing

the energy output after electrolysis, grid, and current conversion energy loss by the total energy

gained. The hypothesis is that with the same installation, maintenance, or land cost, but also

efficiency, the hydrogen storage can store more energy in the day compared to lithium ion

storage for off grid villages in Indonesia.

Implementation of Rainwater Harvesting System and Wetland

Roofs as Components of Sustainable House Design in

Yogyakarta, Indonesia

Muhammad Dimas Mahardika1, Arief Balie1*

1 Department of Civil and Environmental Engineering, Faculty of Engineering

Universitas Gadjah Mada, Yogyakarta 55281, Indonesia


Abstract. According to UN-Water report 2020, incidences of floods and water scarcity are

expected to worsen due to climate change. To combat such incidences, water conservation is

therefore important. This paper proposes an implementation of a rainwater harvesting system

(RHW) to implement a zero-runoff system together with wetland roofs as a component of a

sustainable house. To examine such implementation, a residential house that is situated in

Yogyakarta, Indonesia was chosen as the study case. The design calculation for the RHW

system was calculated with Balitbang PUPR method (2014) and Sunjoto's formula (1988).

Meanwhile, the data of the efficacy of wetland roofs in treating wastewater was borrowed from

secondary data from other research. The results yielded that annually, the rainwater

harvesting system and the wetland roofs can save water up to 118,6 m3 and 84,86 m3

respectively, which can reduce the cost of water bill up to Rp. 1,932,870.00

Keywords: sustainable house, rainwater harvesting system, wetland roofs, zero-runoff system

Driving Building Energy Efficiency in Indonesian Cities by

Improving Data Reporting and Disclosure

Ahmad Ghifari Ammar Adhiwidyawisesa1, Fadhil Muhammad Irfan1,

and Muhammad Ariel Pratama1*



Abstract. Buildings are predicted to be responsible for 40% of Indonesia’s energy

consumption in 2030, indicating the need for energy conservative and energy efficient

measures in our building stock. Recognizing that need, Jakarta released the first green building

code in Indonesia in 2012 to ensure better energy use in new and existing buildings. However,

this program’s success relies on the availability of energy performance and benchmarking

data, which is still lacking due to the government’s inability to enforce reporting and disclosure

mandates. Through an extensive literature review, this report provides an analysis of data

collection challenges in Jakarta (as a model city for Indonesia) and a comparative study of

performance information policies in foreign cities. Then, a program to improve data

availability is proposed, consisting of periodical data reporting, performance disclosure, and

knowledge capacity building, where it would be supported by financial incentives, proper

stakeholder management, and means of error reduction.

Keywords: buildings; energy efficiency; reporting and disclosure

Fly Ash Characteristics and Management Utilization to Achieve

Zero Waste

Danar Saputro1, Richard2, Chairul Hudaya3*

1 Energy System Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Energy System Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 3 Energy System Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. In Indonesia, fly ash is categorized as hazardous waste which must comply the

regulations. Currently, Fly ash is utilized for cement substitution materials in batching plants

and cement factories. However, this utilization is not been fully utilized and eventually ends up

in the ash yard. The main purpose of this paper is to explore the fly ash characteristics and

calculate the appropriate management costs to be used as a guideline for the fly ash

management with the concept of zero waste. Cost Benefit Analysis (CBA) is used to compare

three scenarios of this fly ash management. The result shows that the three scenarios can be

implemented for pulveriser type coal power plant, but the third scenario is the best alternative

which value the fly ash for 140.000 - 170.000 Rupiah/ while also supporting company

sustainability.

Keywords: fly ash, characteristic, scenarios, zero waste, power plant

Daylight improvement for Multifunction Room in one Storey

House

Indah Puspa Yunita1, Dr.-Ing. Ova Candra Dewi S.T., M.Sc.2, Dr. Ir. Toga H Panjaitan

A.A. Grad. Dipl2


16424, Indonesia 2 Department of Architecture, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia

e-mail: [email protected], [email protected], [email protected]

Abstract. This research aims to analyze increasing light intensity that occurs for passive

lighting. As an effective house indoor lighting. This solution could impact the reduction of

energy for indoor artificial light.in a residential house located at Eramas 2000, Cakung,

Pulogebang, Jakarta Timur. This research uses the descriptive method to describe the

condition of light intensity in a building. Data collect is using Lux Meter followed by simulation

at DIALux software as the comparison of energy efficiency between actual condition and after

interventions. The research shows that in the actual condition the building needs light intensity

improvement which is lower than standard. The intervention that applies could increase light

intensity into 61,8% more than the actual condition.

Keywords: Passive lighting, daylight, light intensity

Integrated Green Ship Recycling Estate

Sunaryo1, Bayu Anugerah P2

1 Department of Mechanical Engineering, Universitas Indonesia, Jakarta 16424, Indonesia 2 Department of Mechanical Engineering, Universitas Indonesia, Jakarta 16424, Indonesia

*e-mail: 1) [email protected] 2) [email protected]

Abstract. According to the Indonesian Classification Bureau (BKI), 1,404 ships in Indonesia

are more than 25 years old and these vessels need to be recycled in the near future. However,

there is no proper understanding & infrastructure for Ship Recycling in Indonesia. This study

discusses the estate design for green ship recycling yard. this estate will be following the

Indonesian government regulations on industrial estate and others national regulation related

to it. This design will be located in Tanggamus Regency, Lampung Province, Sumatra,

Indonesia. This design location selection is based on the need for land that is still available to

design the new green ship recycling industrial estate. this research also covers infrastructure

needs that are well integrated with the green ship recycling yard. the type of infrastructure will

be divided into supporting industries and social infrastructure.

Keywords: Ship Recycling, Facilities, Yard Layout, Environmentally Friendly, Regulations

REVIEW OF REGULATION AND RULES RELATED TO

GREEN SHIP RECYCLING ACTIVITIES

Sunaryo1 , Josafat Anhar2

1 Department of Mechanical Engineering, Universitas Indonesia, Depok 16424, Indonesia. 2 Department of Mechanical Engineering, Universitas Indonesia, Depok 16424, Indonesia

1 [email protected] 2 [email protected]

Abstract. Ship recycling is an activity of partial or complete dismantling of a ship at a ships

recycling facility which aims to recover components and materials of ships that can be

reprocessing and re-use, while handling existing waste for processing in different facilities.

The process of ship recycling is an activity that is classified as dangerous and has a high impact

of environmental pollution, if done improperly and does not follow applicable regulations.

Therefore, it is important for old ships to be recycled with an environmentally friendly process

and pay attention to the safety of their workers. This can be achieved if the vessel's

requirements have clear regulations and regulate the whole both in terms of the

implementation of their training, workforce, and control of hazardous materials. This paper

will compare and review regulations related to ship requirements in Indonesia against

international ship recycling regulations, especially Hongkong Convention.

Keywords: ship recycling, Hong Kong Convention, rules, regulation, review

The Effect of Tariff Integration on The Increase

on Jakarta MRT Passengers

Luky Ariningrum1*, Sutanto Soehodho1 and Nahry1



Abstract. Jakarta as a megapolitan city with a variety of activities and growing mobility has

resulted a transportation problems. One of the breakthroughs to overcome this problem was

built the construction of a mass-scale rapid transit system or MRT (Mass Rapid Transit). To

increase the accessibility of the MRT as the main system, it is provided a feeder service. Data

obtained from the website jakartamrt.co.id that for 6 months (April-September 2019) the

average number of MRT passengers per day is 83,473 people, while the company estimates it

will carry more than 174,000 people every day. In this case passengers who are expected to

ride the MRT are still less than the capacity provided. Integrated fares are intended to reduce

transfer costs so they are attractive to passengers. The purpose of this study was to analyze the

willingness of passengers to pay integrated feeder service tariffs to the MRT by considering

the cost, time and the comfort level of transfer modes so that a Willingness to Pay (WTP) Survey

was conducted and data processing was carried out by analyzing the Binary Logit Model. This

research is expected to find out the effect of fare integration on the increase in MRT passengers.

Keywords: Mass Rapid Transit, Feeder,Tariff Integrations, Willingness to Pay, Binary Logit Model,

transfer mode

Analysis of Surface Runoff Effect

to Flood Potential on Highway Drainage Design

(Case Study: Bakauheni-Terbanggi Besar Highway)

Arief Balie1*, Ivan Ardhian Wihelsa1, and Jonnatthan Darikho1




Abstract. Highway construction caused a major change of land use that leads to the decrease

of catchment areas in the area surrounding and increase in surface runoff. However, the

current Regulation of Minister of Public Works No. 19/PRT/M/2001 still has not required

surface runoff from the roads surrounding area to be calculated. Therefore, this paper will

compare the drainage design between AASHTO Highway Drainage Guidelines 2007 and

national standard. This study area is located at Bakauheni-Terbanggi Besar route of Trans-

Sumatra Toll Road. The calculations are processed by observing several years of rainfall data.

Afterward, the 25-year rainfall using Gumbel distribution method is calculated. The result

shows peak discharge increased by 88.6% if considering surface runoff. Therefore, it can be

concluded that the current Ministry of Public Works design method needs to be revised so the

area surrounding runoff should be included in road drainage design.

Keywords: surface runoff, highway drainage, land-use change

Modelling Railway Level Crossing Traffic Accident for

Determining Fatality Factors in Central Java

Almatrisa Mustikha Hutami1, Tri Tjahjono1 and Nahry1



Abstract. Railway Level Crossing with road is a conflict point with potential high risk of

accidents. In general, it is caused by driver’s behavior. Based on Directorate General of

Railways, in Indonesia in 2014-2015 the number of train-car crashes were 96 in which death

toll were 101 people. The research will conduct in Central Java Province where in 2015-2018,

there were 185 cases of accidents and the number of fatalities was 751. This study aims to

understands human factors contribute to an accident to the level of severities. This is a way as

a proxy to understand which factors of human behavior should be considered for improving

the safety. The model will utilize the Ordered Probit Model (OPM). The results will benefit

how to modificate human behavior for more concern to have safety behavior.

Keywords: railway level crossing, traffic safety, ordered probit model, fatality

An Intelligent Real Time Crowd Management and Driver Alert

System for Public Transportation

Deepika S a*, Swathi J b, Vibesh V Panicker c

a,b,c M. Tech Student, APJ Abdul Kalam Technological University, Department of ECE, TKM

College of Engineering, Kollam-691005, Kerala, India

*Corresponding Author, Email: [email protected]

Abstract. Public Transportation Sector plays a vital role in every country’s mode of transport.

Since public transportation reduces traffic congestion, air pollution and is a comparatively

cheaper means of transport, it’s mostly preferred by common people. With the growing

population, crowding in public transports, especially in buses is a common scenario in most

cities. Many people are forced to travel in footboards of buses due to overcrowding, which can

even be a cause of death. Another issue faced is the accident caused mainly during night time

as the driver may fall asleep, or due to sudden cardiac arrest of the driver. All these problems

are sort in this paper, where we introduce intelligent information and driver monitoring system

that could be built on buses. The passenger security is enabled employing IR sensors that count

the number of passengers entering and exiting the vehicle and thereby the real-time status of

seating is available through the mobile application. Passengers waiting for buses can access

this information through the Global Positioning System (GPS). In case passengers travel on

the footboard, it is alerted by the sensor to the driver. In addition to this, a driver monitoring

system is also established which consists of an eye blink sensor and a heartbeat sensor. Both

sensors are used to alert the driver in case an emergency arises. Ultimately, some features of

the conventional bus can be modified to provide better safety to the passengers and make the

public transportation system more efficient and safer.

Keywords: IR Sensor, Global Positioning System (GPS), eye blink sensor, heart beat sensor

Application of Reflectors to Reduce Glare in Rental Housing

Kurnia Afdillah1, Dr-Ing. Ova Candra Dewi, S.T., M.Sc2*

Dr. Ir. Toga H. Panjaitan, A.A.Grad. Dipl2*

1 Master Student of Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Department of Architecture, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia

*e-mail: [email protected], [email protected]*, [email protected]*

Abstract. This study aims to apply the reflector on rental Housing that have uneven lighting.

The use of reflectors can help distribute natural light to reduce excess heat and glare into the

work area. Excessive light or lack of light entering the building can cause health problems for

residents. This research was conducted to see the function and performance of the daylight

system using a reflector. Through the Dialux simulation, light distribution will be compared

with and without a reflector. Measurements were made at 09.00, 12.00, and 16.00 in 3 days by

taking data on average lux value. Based on the simulation, the reflector can reduce excess

glare by up to 70% in certain hours. This is because the reflector depends on the position of

the sun and also the weather.

Keywords: Daylight, Reflektor, Glare, Rental House

Risk Based Inspection of Corroded Gas Pipelines

Malik, L. A.1, Soedarsono, J. W.1 and Masduki, Y.2

1 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Affiliation Faculty of Engineering, Universitas Pancasila, Jagakarsa 12640, Indonesia


Abstract. Risk Based Inspection (RBI) of API 5L X52 gas pipelines is carried out as part of

pipeline integrity management efforts. As the pipeline is aging depend on time, the likelihood

of failure will increase unless proper governance is carried out to reduce risk. This study

describes the risk analysis based on the likelihood and consequences of failure due to corrosion

in the gas pipeline where the corrosion rate is estimated using in-line inspection technique.

Corrosion rate determination is very important to ensure integrity of the pipeline. The

corrosion rate will be used as a reference to estimate the probability of failure using the two

parameter Weibull distribution method while the consequences of failure are prepared based

on a number of API 581 requirement. A case study is also discussed and confirmed that the gas

pipeline will be considered in risk matrix 5C which is medium - high risk

Keywords: risk based inspection, probability of failure, consequence of failure, risk assessment,

corrosion rate

03B i o t e c h n o l o g y,

B i o p r o c e s s , a n dc h e m i c a l

E n g i n e e r i n g


The 5th

2020

Life Cycle Assessment (LCA) Utilization of Palm Kernel Shell as

Bioenergy

Muhamad Asmawisan Mulyanto1, Kiman Siregar2, Misri Gozan1*

1 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Affiliation Faculty of Agriculture, Universitas Syiah kuala, Aceh 23111, Indonesia


[email protected]

[email protected]

Abstract. The production process of CPO produce solid waste by product of about 35-40% of

the total FFB. These are EFB, fiber, and PKS could potentially polute the environment if they

are not properly managed. This study aimed to analyzed and obtained database of potensial

enviromental impacts that arising from PKS production as bioenergy by using LCA method to

calculate the global warming potential, acidification potential and Eutrophication. The object

of this research is emphasized in the study on utilization of PKS as bioenergy. By using

SimaPro 9.0, the value of the magnitude of each environmental impacts will be known. The

result of production of PKS global warming potential(GWh) is 8.26E+05 Kg CO2 eq/Ton PKS,

Acidification Potential (AP) 4.60E+03 Kg SO2 eq/Ton PKS, and Eutrophication 7.75E+02 Kg

PO4 eq/Ton PKS.

Keywords: Life Cycle Assessment (LCA), Biomass, Palm kernel Shell (PKS), Fresh fruit Bunches

(FFB), Empty Fruit Bunches (EFB), Acidification Potential (AP), Global Warming Potential (GWP),

and Crude Palm Oil (CPO).

Simulation Study of Disturbance Rejection Control of Nitrogen

and Phosphate Concentration for Phycoremediation of Detergent

Wastewater by Chlorella vulgaris in Continuous Reactor Using

Robust Model Predictive Control

Renard Elyon Imawanto1, Amadhea Yudith1*, Bernardus Rendy2 and Kelvin Putra1

1 Bioengineering, School of Life Sciences and Technology, Bandung Institute of Technology,

Indonesia 2 Engineering Physics, Faculty of Industrial Technology, Bandung Institute of Technology, Indonesia


Abstract. Detergent wastewater contains high concentrations of phosphate and nitrogen

which can cause eutrophication and several environmental damages. Reduction of phosphate

and nitrogen concentration can be achieved by phycoremediation using bioreactor. Bioreactor

influent is prone to disturbances caused by concentration fluctuation. The disturbances can

affect total nitrogen and phosphate concentration in the effluent so control is needed to

maintain the concentration so as not to exceed the maximum allowable concentration. Control

is carried out using robust model predictive control (MPC) because of its advantages namely

multivariable control, the ability to impose constraints, and unmeasured disturbances rejection

through uncertainty feedback. This study aims to analyze robust MPC performance in

disturbance rejection. MPC is designed based on linearized dynamic model of Chlorella

vulgaris continuous growth with kinetic parameters obtained from experimental results. The

robust MPC demonstrated good disturbance rejection and constrained effluent concentration.

Keywords: Chlorella vulgaris, Phycoremediation, Robust Model Predictive Control

Exploration of algae-based acrylic composite within context as

building transparent materials

Raihan Nabil Al Farisi1*, Dalhar Susanto1 , Asep Handaya Saputra2

1 Department of Architecture, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424,

Indonesia


Abstract. Building raw materials produce 39% of the total CO2 emissions of each country in

the world, so the consideration of choosing environmentally friendly materials is important in

every building. Transparent materials such as glass or acrylic support functional aspects and

visual aesthetics, acrylic has a 20% lower ability in terms of absorbing heat compared to glass.

Algae are one of the natural organisms which lately is being used as building support

materials. Therefore, this study aims to explore the formation of biomaterials for building

envelope needs with a combination of algae extract and acrylic forming resin. The algae used

are chlorella and cyanophyta, while the acrylic resin used is clear UPR (Unsaturated Polyester

Resin) 108 type. Results obtained from this experiment is fairly evenly spread of algae occur

in a mixture of acrylic resin. It is also known that the more algae that is poured into the mixture

will be inversely proportional to the reduced level of transparency of acrylic. This research is

still an early stage research, further research is needed in order to be able to prove its worth

as a transparent material for the building envelope..

Keywords: Algae, Acrylic, Resin, Biomaterial, Transparent Material

Production of Xylitol and Biosorbent from Corn Cob

by Candida tropicalis

Adrian Rinaldo Odianda S1, Feren Kenisha1, and Ananda Satria Sidharta1*

1 Bioengineering Study Programme, Institut Teknologi Bandung, Jatinangor 45363, Indonesia


Abstract. In 2015, Indonesia approximately generates around 15 million tonnes of corn stover.

If not processed properly, this agricultural by-product can pollute soil and air. Using

biorefinery concept, corn cobs can be converted into other products with added value. Corn

cobs are rich in hemicellulose. Candida tropicalis, a species of yeast, can be utilised to ferment

xylose content in corn cobs into xylitol and yeast biomass. Xylitol is an alternative sweetener,

and yeast biomass can be used as biosorbent in wastewater treatment. In this paper, we design

the industrial process of xylitol and biosorbent production from corn cob. Mass balance

analysis and gross product margin (GPM) is used to assess the economic value of the process.

From 100 kg of corn cob, 32.3 kg of crystallized xylitol and 9.1 kg of yeast biomass is produced.

This industry yields a positive GPM of 81%, which means it is economically feasible.

Keywords: Xylitol, Corn cob, fermentation, Candida tropicalis, biorefinery

Identification of Potential Drug Targets Based on SNPs Related to

Type 2 Diabetes Using In Silico Analysis

Adella Josephin*, Atya Saniah, Mulya Viani Andarini, Nadia Wulandari, Nadira Alya

Putri, Nadya Novalina, Ridha Alviny Syakirah, Sabina Andya, Vidi Miranda

Pakpahan, Nur Imaniati Sumantri*

Biomedical Engineering, Department of Electrical Engineering, Faculty of Engineering,

Universitas Indonesia, Depok, 16424, Indonesia

*e-mail: [email protected]; [email protected]

Abstract. Type 2 Diabetes (T2D) is characterized by abnormal elevated levels of blood glucose

due to impaired insulin secretion, glucose intolerance, and hyperglycemia. Current therapy for

T2D includes lifestyle modification and use of oral antidiabetic drugs. Systems biology

perspectives inspire personalized medicine (PM) development. The aims of this study was to

investigate potential single nucleotide polymorphisms (SNPs) as T2D PM target by literature

and bioinformatics approach. We used SIFT, PROVEAN, PolyPhen-2, and Ensembl VEP to

analyse functional predictions of the SNPs. The SNPs located in KCNJ11 (rs5219), SLC30A8

(rs13266634), PPARG (rs1801282), MTNR1B (rs141804752), and ENPP1 (rs1044498) genes

were associated with T2D development. The data showed that mutation in MTNR1B gave

greatest potential damage on protein functions related to T2D development by affecting the

pancreatic glucose sensing, glucose tolerance, and insulin secretion. Further study is required

to assess personal responses to the medicines applied according to the SNPs occur.

Keywords: T2D, MTNR1B, personalized medicine, systems biology

Experimental Study of Partial Hydrogenation of FAME

in Isothermal Trickle Bed Reactor

Didier Nsabimana I1*, Yuswan Muharam II2

Chemical Engineering Department, Faculty of Engineering, University of Indonesia,


Email: [email protected]

Abstract. Although biodiesel has many benefits over petroleum diesel it still has the problem

of oxidation stability and cold flow properties which limit its application so, in order to mitigate

these problems, we need to upgrade it. In this research biodiesel with 95.3 % methyl linoleate

(C18:2) and 4.7 % methyl oleate (C18:1) was partially hydrogenated in the trickle bed reactor

using Ni/Al2O3 as a catalyst. The reactor was operated at a constant pressure of 7 bar and

different temperatures. At 135 oC there was 99.21% conversion of C18:2, at 160 oC there was

98.42% conversion of C18:2 and at 185 oC there was complete conversion of C18:2. At 135

oC the experiment yielded H-FAME with higher composition of methyl stearate (C18:0), at

160 oC the experiment yielded H-FAME with almost equal composition of C18:0 and C18:1

while at 185 oC the experiment yielded the H-FAME with higher composition of C18:1.

Keywords: Trickle bed reactor, partial hydrogenation, H-FAME, Ni/Al2O3

SEMI QUANTITATIVE RISK ANALYSIS OF WELL

BLOWOUT DURING REACTIVATION PHASE USING

RELIEF WELL TECHNIQUE

Adam Sriadi, S.T.

Faculty of Engineeering, Universitas Indonesia, Depok 16424, Indonesia

Chemical Engineering Departement, Postgraduate Program of Natural Gas Management

e-mail: [email protected]

Abstract. The oil and gas field development was carried out by PT X which is located in the

Offshore North West Java Block, located in the North Sea area of West Java. Y Well is one of

the development wells drilled by PT X with the aim of producing gas to increase the company's

production. In the Y well with case study in the Java Sea, drilling activity was completed in

2011. In 2019 the well reactivation activity was carried out using perforation method. During

the reactivation activity, gas bubbles appear in the surface of offshore platform and Rig Z,

which is located in the sea operating area. To overcome the problem of blowout, Relief Well

was drilled. Research Methodology in this Thesis is carried out by identifying hazards in the

process planning and executing of Relief Well and describing them in possibilities and

consequences also developing strategies and mitigations that can be carried out to reduce the

risks that might occur at the level with a high risk assessment. Risk analysis in this thesis uses

Risk Scoring Index using Crystal Ball simulation software to simulate the risk value. In the

Risk Scoring Index model, the significant probability risk value consists of: subsurface risk,

NPT (Non Productive Time) of drilling equipment, blowout and combined with the

consequences consisting of: safety, the environment, financial impacts that may arise, and the

company's reputation. Based on calculation results simulation, the average risk value of 10.5

at the high level is obtained and by evaluating and mitigating preventive measures, the risk

value can be reduced to average of 8.4 at the medium level. The the most influential value on

the level of risk is the uncertainty factor in the subsurface condition, where the weight of the

assessment for the possibility of risk factors is considered high.

Keywords: Risk Scoring Index, Relief Well, Consequences, Risk Ranking

Synthesis Of Biodegradable Bioplastic Based Off PVA-MCC

Composite With Boric Acid Cross Linking

Felix Subakti, Dr. Ir. Setiadi, M.Eng and Prima Aulia, S.T



Abstract. Petroleum based plastics had dominated plastic industries as they are easy to

manufacture and possesses excellent physical properties. But as the environmentally conscious

movement spreads, the necessity of bio-plastic to replace petroleum-based plastics grows in

tandem. Bio-plastics are manufactured widely through the means of composite synthesis. Poly

vinyl alcohol (PVA) was one of the main contenders for mass produced bio-plastics. But the

brittle nature of PVA rendered its industrial application unfeasible. Cellulose was added as a

reinforcement in order to increase PVA’s overall strength and thermal resilience and a

plasticizer to increase its elasticity. This research argues that addition of boric acid will reduce

the water solubility of PVA-MCC and form an ideal plastic film. 5 samples including a neat

PVA film control sample were cast from identical volumes of their compositions including one

control sample of Neat PVA. A FTIR assessment was run through the samples to observe the

bonds formed within the samples Physical properties were assessed through Tensile strength

and elongation test, a solubility test along with a decomposition test and the overall thickness

of the film.

Keywords: electronic waste, leaching, stripping, NaOH, HCl, H2O2, gold recovery

Data Logger Multichannel Based on Arduino UNO Applied in

Thermal Measurement of Solar Still Carocell L3000

Ibnu Roihan1, Juan Karnadi1, and Raldi Artono Koestoer1*



Abstract. This paper explains how to make and evaluate the performance of an Arduino-based

data logger in measuring solar still Carocell L3000 performance tests. There are 12

measurement points taken on solar still Carocell L3000 using three units of the Arduino - board

as data storage independently. The sensors used include DS18B20 Waterproof, DHT22, and

K-type Thermocouple with MAX6675 modules. The results of these experiments indicate that

the 12 sensors installed on Arduino can read well and are stored in real-time on the SD card

used in each data logger for 24 hours non-stop. Sensor readings the real-time data when solar

still Carocell L3000 is tested. By understanding the characteristics of the sensors used and

knowing the measurement requirements in research, Arduino-based data loggers can be made

with good performance and are comparable to commercial products.

Keywords: data logger, Arduino, DS18B20, DHT22, MAX6675

The Analysis for Optimization of Nuclear Safety in Radiation

Facilities using the Fault Tree Analysis (FTA) method in the

Viewpoint of the Regulatory Body

Roy Candra Primarsa1, Tania Surya Utami1

1 Chemical Engineering Department, Faculty of Engineering, Universitas Indonesia,



Abstract. The Nuclear Energy Regulatory Agency (BAPETEN) Indonesia assesses the nuclear

safety level of radiation facilities through the Nuclear Safety and Security Index (IKKN). The

various findings of inspection the factors causing failure increasing the IKKN as the Top Event

of this study. BAPETEN Strategic Plan 2015 - 2019, stated IKKN value 2017 - 2019 in the

range of 75 - 82 (scale 100). Inspection results, probability value of category, criteria and

items findings were analyzed by the Fault Tree Analysis (FTA) method with the goal to optimize

increasing the IKKN. Inspection data 2017 - 2019 the probability failure of the IKKN is 0.128

(12,8 from 100), in other words it means that the probability of success value of the IKKN is

0.872 (87,2 from 100).This result appropriate with the IKKN value in the 2017-2019 Strategic

Plan, The optimization of nuclear safety can be implementes with improvement of the

Inspection system.

Keywords: Nuclear Safety, Radiation Facilites, Nuclear Safety Security Index,Fault Tree Analysis

(FTA), Optimization

CO2 Pretreatment and Pistia stratiotes L. as Phytoremediation

Agent as an Alternative Process in Alkaline Wastewater

Treatment from Soap and Detergent Industry

Adrian Rinaldo Odianda Sinaga1*

1 School of Life Science and Technologies, Institut Teknologi Bandung, Bandung 40132, Indonesia


Abstract. Wastewater from the soap and detergent industry has alkaline properties and high

phosphate and nitrate content which can reach 144 ppm and 38 ppm. The addition of CO2 gas

into wastewater can be used as an ecofriendly alternative to reduce pH and also Pistia

stratiotes is used as phytoremediation agent to reduce phosphate and nitrate. This study aims

to determine the optimum amount of CO2 gas addition for maximum phosphate and nitrate

absorption and plant growth. Based on this research, it was found that the treatment with

concentration of dissolved CO2 is 0.03 mol/(L) was the most optimum, this was indicated by

the highest specific growth rate and highest phosphate absorption with 0.041 g/day and 16.38

ppm/day. Highest nitrate absorption rate was observed in higher CO2 concentration with 19.7

ppm/day. These results indicate that this treatment can be used as an alternative for wastewater

from soap and detergent industry.

Keywords: CO2, nitrate, phosphate, Pistia stratiotes, wastewater

Risk Analysis Based on ISO 31000 Supply Chain Risk

Management (SCRM) on Tangible Inventory Material

Management Aspect at Oil & Gas Well Drilling in X-Field

Using Monte Carlo Method

Fardy Muhammad Ichsan Sukirman and Andy Noorsaman Sommeng

Department of Chemical Engineering, Faculty of Engineering, the University of Indonesia,



Abstract. The uncertainties in well drilling are common in upstream oil & gas industry,

especially the readiness of tangible cost material aspect. The company must guarantee the

availability of material by taking into economic and financial factors in perspective of PSC’s

(Owner Company) business process: Inventory management. The thinking framework used

refers to ISO 31000 Supply Chain Risk Management (SCRM). Quantitatively Monte Carlo’s

method is used with software Crystal Ball® to get the risk forecast and sensitivity analysis

indicating risk priority of the most decisive variable, so that preventive actions can be

implemented to reducing the risk at tolerable level. The results show that the most dominant

factor is 9.5/8 in Casing. Optimization model can increase the probability of health stock

achieved up to 78.19%. With implementing correction factor by 8.33% towards purchase

decision in overall, so that the health stock condition with 10% risk tolerance of inventory

value can be achieved.

Keywords: risk analysis, drilling material, inventory management, ISO 31000 SCRM, Monte Carlo

Energy Audit in the Upstream Oil and Gas Industry Sector:

Case Study in Field X, South Sumatra

Yulhafidz, and Eva Fathul Karamah

1 Department of Chemical Engineering, Faculty of Engineering, University of Indonesia,



Abstract. Energy is the driving force of life activities. Energy resources are strategic natural

resources and are very important for the livelihoods of many people. Energy management

which includes the supply, utilization, and exploitation must be carried out in a just,

sustainable, rational, optimal and integrated manner in order to provide added value to the

Indonesia nation's economy. Field X as one of the oil and gas fields in South Sumatra province,

operates production facilities that are quite old. This research was conducted on equipment in

the main facilities and supporting facilities in Field X. The thinking framework used in this

energy audit refers to ISO 50001: 2011, Energy Management Systems. The analysis uses

quantitative methods with Microsoft Excel® to get the energy performance of each equipment

used. Based on the results, the value of energy intensity during the period of 2016, 2017 and

2018 has increased from year to year.

Keywords: Energy audit, ISO 50001:2011 Energy Management System, Energy intensity

Techno Economic Analysis of Simultaneous H2S and CO2

Removal from Natural Gas at High Consentration Acid Gas

Ronny HT Silitonga1*, Dr. Tania Surya, S.T., M.T2*

1 Chemical Engineering Department, Faculty of Engineering, Universitas Indonesia,

Depok, 16424, Indonesia 2 Process Intensification Research Group, Chemical Engineering Department, Faculty of Engineering,



Abstract. PT XYZ will build the Gas Processing Facility (GPF) field X to meet the needs

national gas supply for industrial and non-industrial needs in the regions of East Java and

Central Java. Field X GPF is designed with a total gas flow rate capacity of 330 MMscfd with

impurities content of 0.6-1% H2S, 34% CO2, RSH, COS and Merkaptan. The gas product

specifications produced by GPF field X are H2S content <4 ppmv, CO2 content <5% vol (max).

This study aims to choose the optimal gas sweetening technology to be applied to the gas

processing facility, then to simulate the process based on the selected technology. The results

of this study, Sulfinol technology has been chosen to be used as a gas sweetening technology

by using solvent sulfinol X.

Keywords: Natural Gas, Sour Gas, Sweetening Gas, Economical Feasibility

Life Cycle Assesment Gate to Gate at Crude Distillation Unit

(CDU) in PT Kilang Balikpapan

Ewin Abadi1, Dianursanti1*

1 Department of Chemical Engineering, Faculty of Engineering,

The University of Indonesia, Depok 16424,


Abstract. The use of vehicle fuels (gasoline and gasoil) has become global concern in recent

times due to the impact on the environment. Process of fuel production at the refinery also has

a major role to the environment. LCA is a method based on ISO 14040 and 14044 standards.

The focused on the study in one of the largest oil refinery in Indonesia, with data in 2018. The

result is to produce 1 kiloliter of gasoline produce higher emissions than production of diesel

fuel gas. Gasoline produced at platformer unit is product that has contributed highest

emissions in their production processes with emissions by 1 ton of CO2-eq gas emissions and

acidification of 0.001 Tons SO2-eq per 1 kiloliter product. The novelty in this research is

creating a database of emissions per valuable product from CDU Unit in Indonesia.

Keywords: Life Cycle Assessment (LCA), Database, Gasoline, Gasoil, Crude Distillation Unit (CDU)

Quantitative Identification of Gas Turbine’s Reliability Through

Big Data Analysis

Nadira Hanum1*, Andy Noorsaman Sommeng1

1 Gas Management, Chemical Engineering Departement, Faculty of Engineering,

Universitas Indonesia, Depok 16424, Indonesia


Abstract. The Gas turbine is a device that uses gas which, in this case, functions as fluid to

turn a turbine with internal combustion so it can turn a generator to produce electricity. Gas

turbines have a high level of danger. Thus, research is needed to analyze the potential of the

failure in the components presented in the gas turbines. Error analysis will be carried out

quantitatively. Quantitative analysis is done by calculating all components and determining

preventive maintenance. Historical failure data and support of structured and unstructured

data from gas turbines for 1 year will be collected. The goal is to recognize the pattern of

damage patterns and equipment approval levels. The regression value will be calculated by R

Software to determine whether the Weibull distribution is sufficient. Using Weibull analysis,

we can conclude that it would be more beneficial to use prevention as the first barrier from the

failure. This can be analyzed using the Weibull Distribution Equation combined with the Big

Data Analytic method and visualizing with R Software.The result is reliability value of the

system at 4380 hours or 6 months of operation obtained a reliability value of 0.795.

Keywords: Gas Turbine, Reliability, Weibull distribution, and Big Data

Study Implementation of SNI 13-6910-2002, Drilling Operations

for safe conduct onshore and offshore in Indonesia. Section 6.10,

‘Abandonment of Wells’ on Production Sharing Contract Gross

Split: Case Study PT. X by Evaluating Cash Flow Projection

Melati Nurkirana Yuniarsari 1*, Tania Surya Utami 2

1 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. The operation of oil and gas (oil and gas) offshore of Indonesia has been started

since the 1960s. With oil and gas operations that have been going on for more than 50 years,

besides requiring extra effort in the production process, it must also take into account the costs

of Post-Operational Activities (KPO). KPO costs according to PTK-040 / SKKMA0000 / 2018

/ S0 are activities to permanently close wells, stop operations and eliminate the ability of

Production Facilities and supporting facilities to be re-operated including permanent

demolition, as well as to restore the environment in the WK in Upstream Business Activities

Oil and gas. Financial challenges are faced by working areas that operate with a gross split

scheme, in which the cost recovery scheme does not apply, causing KPO costs to be borne by

the company and ultimately affecting the economic value of the work area. In Production

Sharing Contracts in the upstream oil and gas industry, the backup costs are regulated by SKK

Migas in the Work Order Number: PTK-040 / SKKMA0000 / 2018 / S0. Commercially, to

obtain reliable financial reports for stakeholders, the Indonesian Institute of Accountants (IAI)

has set the cost of provision in Statement of Financial Accounting Standards number 57 (PSAK

57 - regarding contingency fees). This paper aims to study the implementation of calculating

KPO cost reserve considering abandonment of wells using SNI 13-6910-2002. From the result,

shown that negative cash flow start in 2031, and even in total period of contract, the total

amount of abandonment cost ($598,379,403.24) is higher ($121,961,801.95) or (25.6%) than

net cash flow ($476,417,601.28) resulted from operations. This risk should be mitigate by the

company by reduce operational expenditure or increase hydrocarbon output.

Keywords: Cash Flow Analysis, Contingency Costs, Gross Split, Abandonment and Site Restoration

Beyond Parabolic Concentration Profile inside Porous Solids

Ary Mauliva Hada Putri1,2∗ and Mahmud Sudibandriyo1

1 Department of Chemical Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Research Center for Chemistry, Indonesian Institute of Sciences, Kompleks Puspiptek,

South Tangerang 15314, Indonesia


Abstract. We discuss a new way to approximate the concentration profile inside the porous

solids. It is an extension of the work of Liaw et al., who adopted a parabola (i.e., quadratic)

profile, which is a function of pellet radius, while retaining the spherical symmetry. We extend

their work by adding the quartic term. The inclusion of this new term still preserves the form

of linear driving force approximation with some correction to Glueckauf ’s parameter. The

presence of such a correction will affect the breakthrough curve, although its significance can

only be determined experimentally. We plan to apply the result to the case of fixed-bed adsorber

used for hydrogen/methane separation with activated carbon.

Keywords: activated carbon, Glueckauf ’s parameter, hydrogen, linear driving force, methane

CO2 Utilization as a Carbon-Neutral Electrofuel for

Automobile in Indonesia

Abigail Shekinah Glory1, Aulia Izzati1, Elissa Oktaviana1, Eltanin Gamal1,

Sarah Ananta1*

1 Department of Chemical Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Indonesian Government has committed to achieve net-zero greenhouse gas

emissions as an effort to mitigate climate change. To resolve this issue, Carbon Capture

Utilization (CCU) technologies have the potential to be an alternative of fossil fuel to reduce

carbon footprint. This paper investigates CO2 utilization into valuable products such as

electrofuels that includes to the Carbon-neutral Synthetic Fuels (CNSFs). Electrofuels are

produced from carbon dioxide (CO2) and Hydrogen (H2) through the electrolysis of water

using renewable electricity as the primary source of energy to form different types of

electrofuels (the Sabatier reaction). Due to many considerations, we use the extraction of pure

CO2 from biofuel plants as a technology in the electrofuels production. With these

technologies, beside its potential to resolve climate change issue, the usage of electrofuels in

automobile and its cost could become the potential to decouple economic growth from CO2

emission in Indonesia while utilizing current infrastructure.

Keywords: Climate Change, Carbon Dioxide Emission, Carbon Capture and Utilization, Electrofuels,

Biofuel Plants, Electrolysis, Carbon-neutral Synthetic Fuels, Automobile.

Laquisys: Integrated System to Improve Rubber Quality for

Sustainable Development

Muhammad Nabil Hifzhan1*

1 Department of Chemical Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. The agricultural sector, especially natural rubber, is one of the sectors of the booster

for Indonesian economy. However, the low selling price of natural rubber and absorption by

the industry raises a variety of problems that can hinder the achievement of Sustainable

Development Goals (SDGs). In order to increase the price of natural rubber and the economy

of rubber farmers, various problems related to natural rubber must be resolved, which are the

low quality of natural rubber produced, the low absorption from industry, collectors who take

advantage of large amounts. Laquisys is a program to improve the quality of natural rubber

with a centralized system that involves various interests with the circular method. This program

implements a circular model between each stakeholder, including the government, rubber

industries, and rubber farmers. Through this program, each stakeholder has benefits and solve

the problem.

Keywords: rubber, rubber farmers, hybrid latex, centralized system, circular method

Major Hazard Prevention through Risk-Based Application using

Fault Tree Analysis for Barrier Acceptance Criteria of Well

Temporary Plug and Abandonment

Dwi Karsa Agung Rakhmatullah1*, Dr. Andy Noorsaman Sommeng, DEA2

1,2 Chemical Engineering Department, University of Indonesia, Depok 16424, Indonesia


Abstract. Temporary Plug and Abandonment (P&A) for well under construction due Drilling

Program arrangement to be cost effective. Application of risk-based P&A requirements over

Prescriptive P&A requirements is quite promising to justify the minimum number of well

barriers as barrier acceptance criteria and maximum abandonment period in which correlated

with the overall reliability of the well barrier element in order to prevent Major Hazard with

lowest possible risk of pollution is facilitated. Fault Tree Analysis have been used to

demonstrate that the reliability barrier 99% and 99.9% arrived at the ALARP region against

the Risk Threshold with the 1 (one) year to 20 (twenty) years Temporary P&A Duration and

also periodic assurance verification frequency in between. Therefore credible verification of

necessary quality monitoring, suitability and durability of the barriers need to be assured to

be reasonably achievable and Effective

Keywords: temporary plug and abandonment, fault tree analysis, barrier acceptance criteria, major

hazard, barrier reliability, assurance verification

Cost Optimization of Crude Oil Logistics for

Petroleum Refinery Unit

Ardhana Atmayudha1,2, and Widodo Wahyu Purwanto1,2



Indonesia


Abstract. Crude oil logistics activity is an important part in the petroleum refining industry.

Currently, the petroleum refining industry is facing global economic challenge to remain

competitive in global market. The objective of this research is to obtain the best strategy for

crude oil logistics, considering multi sources and heterogeneous fleet, from oil field to refinery

unit by minimizing crude oil supply cost. A case study for crude oil logistics from several oil

fields to Refinery Unit-X (RU-X) is considered for this research. AIMMS version 4.70 software

with CPLEX 12.9 solver is employed to solve the Mixed Integer Linear Programming (MILP)

with decision variable of route and transported crude oil quantity. The result shows that the

optimum crude oil supply cost is 511.11 million USD per month. The model can be applied to

help management to decide the best strategy of crude oil logistics to RU-X with optimized cost.

Keywords: refinery unit, crude oil logistics, optimization, MILP, cost

Optimization of Petroleum Products Logistic Distribution in

Commercial Distribution Region III

Farhan Surury1,2, and Widodo Wahyu Purwanto1,2*



Indonesia


Abstract. Transportation is an important part of the logistics system, which involving the

products distribution, from manufacturing plant or distribution centre through transportation

network to customer. The objective function in this research aims to minimize transportation

cost to deliver some products, Premium, Kerosene and Solar from Balikpapan and Kasim

Refinery to Terminals and Depo based on Commercial Distribution Region III network.

Mathematical model was formulated under assumption of distance-based costs, multi-depot

and heterogeneous fleet. The computational model solution in this study used AIMMS 4.70

software with CPLEX 12.9 solver to solve Mixed-Integer Linear Programming model. Analysis

of obtained result could give solutions for effective route of product distribution by utilized

each vehicle selectively to deliver the products refer to each customer’s demand.

Keywords: Logistic, Petroleum Fuel, Optimization, Vehicle Route Problem, Transportation Cost

CO2 Separation of Natural Gas High CO2 Contents using

Membrane and Controlled Freeze Zone (CFZ) Technologies with

CO2 Sequestration: A Comparative Study

Muhammad Nizami1,2, Widodo Wahyu Purwanto1,2*



Indonesia


Abstract. Development of the East Natuna gas field, the largest natural gas resources in

Indonesia, is still highly challenging because of the presence of CO2, up to 72%. The

implementation of reliable CO2 separation technology with suitable CO2 handling methods is

crucial to maximizing the field’s potential. In this study, we compared the technical

performance of two CO2 separation technologies, membrane and controlled freeze zone (CFZ)

integrated with CO2 sequestration. The simulation process is performed by Aspen Hysys V11

software. The results show that CFZ can separate CO2 until 98,6%, whereas membrane has a

slightly lower separation of 95,8%. Furthermore, CFZ offers very low specific power

consumption about 50.25 kWh/tonne-CO2, whereas membrane consumes 222.28 kWh/tonne-

CO2. In CO2 sequestration, total CO2 needs to be injected to the aquifer that released from

CFZ and membrane is 40,7 Mt/year and 39,1 Mt/year, respectively. Finally, CFZ technology

is technically competitive rather than membrane technology.

Keywords: high CO2-content, natural gas, CO2 separation, CFZ, membrane, CO2 sequestration

Utilization of Cocopeat as an Additive in Topsoil Alternative for

Mine Reclamation

D. N. Arumsari1*, M. F. F. Bessari2, S. A. Fitriyeni1, and R. Aldita1

1 Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung 40132, Indonesia 2 Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung 40132,

Indonesia


Abstract. Reclamation is a necessary process to restore land use of post-mining site. One

obstacle of mine reclamation is availability of good quality topsoil. Hence, research regarding

topsoil alternative is deemed necessary. However, application of additive is important when it

comes to topsoil substitute. Cocopeat has a potential as an additive in topsoil alternative. It is

a by-product of coconut that would otherwise be discarded as waste and an environmentally

friendly alternative to sphagnum peat. In this study, several kinds topsoil alternatives and

properties of cocopeat are analysed. The most suitable alternative for topsoil was found to be

a mixture of sub-clay, peat, and microbial agent. Analysis of cocopeat properties showed that

cocopeat can be used as a peat substitute and has qualities that helps with the shortcomings of

topsoil alternative. Therefore, cocopeat appears to be suitable to be used as an additive in

topsoil alternative for mine reclamation.

Keywords: cocopeat, coir dust, mine reclamation, peat, topsoil alternative

Utilization of Recovered Nickel from Nickel-Cadmium Battery

Waste in the Fabrication of Efficient Turbine and Generators to

Generate Electricity for Steam Power Plants

M. F. F. Bessari1* and D. N. Arumsari2

1 Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung 40132,

Indonesia 2 Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung 40132, Indonesia


Abstract. The coal combustion process creates a very corrosive environment. Hence,

corrosion becomes a crucial issue at a steam power plant beside the problem with material

strength at hightemperature. To increase the corrosion resistance, elements such as Cr and Al

are homogeneously dissolved in the nickel superalloy matrix to form a protective layer of

Al2O3 and Cr2O3 on the alloy surface. One of those elements is yttrium (Y). This article

proposes a hypothesis that recycled nickel from nickel-cadmium battery waste can be

processed into a nickel superalloy by combining it with other elements. This superalloy can be

utilized as an innovative material to be used in the turbine and generator of a steam power

plants as it can withstand hot corrosion. Therefore, problems regarding environmental and

public health impacts due to batterie waste can be minimized while utilizing said waste to

increase the efficiency of a steam power plant.

Keywords: battery waste, generator, hot corrosion, nickel recovery, steam power plant, turbine

Simplistic Process Safety Rules to Minimize Dropped Object to

the Brownfield Subsea Facilities during Installation Phase

Dwi Karsa Agung Rakhmatullah1*, Dr. Andy Noorsaman Sommeng, DEA2

1,2 Chemical Engineering Department, University of Indonesia, Depok 16424, Indonesia


Abstract. Dropped Objects from Construction Vessel to install several Subsea Equipment and

its installation aids on the Brownfield area could cause damage to the existing asset which is

vulnerable or only could withstand 20kJ impact load and it will be difficult and challenging to

repair in case of severe damage. While also the final consequences is considered catastrophic

in term of safety, environment and asset damage. The Simplistic Process Safety Rules will be

generated to minimize the Dropped Object Frequency based on the outcomes of Dropped

Object Risk Analysis, in order to bring this Major Hazard risk into ALARP Level with

Likelihood Reduction approach. The rules could be applied and extended to all the

stakeholders involved during Installation Phase. As such recommendation will be generated

such as determination of Safe Handling zone from subsea Asset, Minimum horizontal distance

when deployment and recovery and maximum height above the Subsea Equipment during

traversing

Keywords: subsea equipment, dropped object risk analysis, simplistic process safety rules, major

hazard, likelihood reduction

Comparison of Classification Algorithms on Household

Electricity Consumption Data

Brilian Putra Amiruddin1* , Evanbill Antonio Kore1 , Dhiya Aldifa Ulhaq2

and Auzan Widhatama1

1 Electrical Engineering Department, Faculty of Intelligent Electrical and Informatics Technology,

Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia 2 Mechanical Engineering Department, Faculty of Industrial Technology, Institut Teknologi Sepuluh

Nopember, Surabaya 60111, Indonesia


Abstract. The pattern of electricity consumption is one thing that is important to be known by

a household, so it is essential to identify the type of intensity of electricity usage from the

household's daily life. It can help determine how much electricity consumption of equipment

so that efforts can be made to optimize electricity consumption further while saving costs. Due

to that, the classification algorithms based on supervised learning is used. In this study, we

compared several types of classification methods to determine the type of electricity usage

patterns in a daily household life on Household Electric Power Consumption data obtained

from Kaggle. The classification methods being compared are KNN, SVM, Decision Tree, and

Logistic Regression. The accuracy of all methods is analyzed to find which method is best in

identifying the intensity of electricity usage. From the results of this study, it was found that the

Logistic Regression method was the most accurate in classifying the type of intensity of

electricity consumption with an average accuracy value of 99%.

Keywords: classification, comparison, household electricity, algorithms

PSC and Gross Split Comparison for Oil Block Contract

Extension

Fataninda Dwi Kesumaputri1*, Eva Fathul Karomah2

1 Chemical Engineering Department, Faculty of Engineering, Universitas Indonesia, Depok 16424,


Indonesia

*e-mail: [email protected], 2. [email protected]

Abstract. Indonesia has been using Production Sharing Contract (PSC) Cost Recovery as its

oil and gas contract regulation since 1966. In 2017, Minister of Energy and Mineral Resources

released new regulation which set new oil and gas contract regulation in Indonesia from PSC

Cost Recovery to Gross Split (GS). Block X, an oil and gas block owned by International Oil

Company operating in Indonesia, will end its contract period in 2018. Regarding the new

regulation, contract system of Block X will be analysed by using PSC and GS to determine

which system is more profitable for next contract period. The result of this study are (1) NPV

for PSC is MUS$ 132,302, while for GS is MUS$ 1,283,756; (2) POT for PSC is 2 years, while

GS is less than a year. In this case GS is more profitable for next contract period since it has

higher NPV compared to PSC.

Keywords: PSC, Gross Split, Oil contract regulation

The Effect of Blending the Marginal Heavy Crude Oil and the

Heavy Crude Oil in Sumatera towards Crude Oil Price

Riko Putra1 , Reviana Revitasari1 , Achmad Anggawirya Alimin 1 ,

and Bambang Heru Susanto1*

1 Chemical Engineering Department, Engineering Faculty, Universitas Indonesia, Depok 16424,

Indonesia


Abstract. In order to increase oil production in Indonesia with a target of reaching 1 million

barrel oil per day, a feasibility study on marginal oil fields is important to do. This research

will discuss about the effect of blending marginal heavy crude oil (X) and heavy crude oil (Y)

in Sumatera towards crude oil price. Data analysis was performed on the simulation results

with variations in the blending ratio. Then, the Indonesian Crude Price (ICP) was calculated

with individual ICP formula which is obtained through statistical modelling. The conclusion

that can be drawn from this research is that marginal heavy oil X can be utilized with a

blending process strategy and without having to build a significant processing infrastructure.

With the blending ratio 7:3 for X: Y, it results ICP 66.109 USD/BBL. So that the marginal field

X which produce 1350 BOPD can increase revenue by 89,247.15 USD per day.

Keywords: heavy crude oil, marginal oil field, oil production, blending oil, Indonesian crude price

Utilization of Activated Carbon from Durian Waste as CO

Adsorbent on Vehicle Exhaust Extender

Frederick Soetandar1, Rafifah Hasna2 and Devinta Aurelia3

1 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 3 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Air pollution from exhaust emissions, including carbon monoxide, is increasing in

line with the increasing number of motor vehicles. Durian waste have the potential as raw

material for the manufacture of activated carbon can reduce the concentration of CO gas from

motor vehicles. The purpose of this paper is to design an exhaust extender containing activated

carbon. Charcoal from durian is activated chemically by ZnCl2 10% for 3 days, then crushed

into becoming granules. The charcoal granules are then placed between the inner mesh and

outer mesh to create a charcoal bed. The result is expected to reduce the carbon monoxide

released to the ambient air.

Keywords: Durian Waste, Activated Carbon, CO adsorbent

Water Demineralization in Thermal Power Plant Tanjung Enim

3x10 MW

Gurruh Dwi Septano1 *, Adellia Indah Permata2

1 Department Of Mechanical Engineering, University Of Sriwijaya, Palembang 30128, Indonesia 2 Department of Chemical Engineering, University Of Sriwijaya, Palembang 30128, Indonesia


Abstract. Demineralization water is removal of dissolved ionic mineral impurities present in

water and other liquids. Mineral content in water can cause crusts in power plant equipment

such as boilers and turbine, lowering yield and selectivity values in the reaction process. The

objective of the work is to diagnose the conditions of water process Tanjung Enim thermal

power plant with standard value of ASME CRTD Vol. 34 and Power Plant water treatment

standard. Demineralization Water treatment process starts from Multi Media Filter (MMF),

Carbon Filter (CF), Reverse Osmosis (RO), Electrodeionization. Demineralization water

sampling taken in January, february, march and April. The water sampling used in RAW

Water, Feed RO, Electrodeionization process, feed water and boiler drum to measure the

parameters of pH, conductivity, turbidity, Fe, 𝐶𝑙 2 and 𝑆𝑖𝑂2 , 𝑃𝑂4 and ions of 𝑁𝑎 +, 𝐹𝑒 +, 𝐶𝑢 +

some of parameters result the fluctuative value but still in both of water treatment standard.

Keywords: Demineralization, mineral, water treatment, parameters, standard

04E l e c t r i c a l ,

C o m p u t e r , a n dB i o m e d i c a l



The 5th

2020

Business Development Strategy Through Business Model Canvas

As Alternative Business Strategies in Hydroelectric Power Plant

Development

Raka Budi Satrio Utomo1 , Djoko Sihono Gabriel2 *

1 Industrial Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Industrial Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. The potential of hydropower in Indonesia estimated at 75 GW, which is spread

throughout Indonesia, and 9% of which can be utilized to be developed into a hydroelectric

Power Plant (HEPP). The development of hydroelectric power plant is not far developed until

now with an installed capacity of 4,938.64 MW in 2018, with an average growth of 3.82% per

year, this condition is very different from the types of thermal plants that have an installed

capacity of 49,492.78 MW in 2018, with an average growth of 4.91% per year. The purpose of

this research is to develop hydropower electricity business in creating a business strategy in

an achieve the renewable energy mix target by 2025 by 23%. The method used to create a new

business strategy is the Business Model Canvas and SWOT Analysis. The results of this study

indicate the business position in the Cartesian quadrant II (Two) diagram with IFAS value of

5.536 and EFAS value of 3.701 with the results supporting the diversification strategy.

Keywords: Hydro Power Plant, Business Strategy, Business Model Canvas, SWOT

Healthcare Data Analysis using Machine Learning Algorithms -

Literature Review

Venkat Lellapalli1 *

1 Industrial and Systems Engineering, Mississippi State University, Mississippi 39762, USA


Abstract. Hospital readmissions are indicators of the quality of service offered by hospitals

and give an insight into the performance measures on the cost at the hospital The Nationwide

Readmissions Database (NRD) is a database developed for the Healthcare Cost and Utilization

Project (HCUP). For this research, the data for the year 2016 and 2017 from the National

Readmission Database (NRD) will be studied and machine learning models built to model the

relationship between readmission and various factors related to the patient. The observations

for Ischemic heart diseases and diseases of pulmonary circulation (diagnosis codes I20 to I28)

will be used for this study. Analysis and goodness of model indexes such as the confusion

matrix, AUC index, MSE, and R squared scores and findings from the study will also be

evaluated and reported taking into account the model parameters.

Keywords: Healthcare, Machine Learning, Heart Diseases

Customer Behavior Analysis and Segmentation Based on

Smartphone Brand In an Indonesian Operator

Ryan Nugraha Ramadhan1 and Muhammad Suryanegara2

1 The graduate program in Telecommunication Management, Faculty of Engineering, Universitas

Indonesia, Depok 16424, Indonesia

e-mail: [email protected] 2 The graduate program in Telecommunication Management, Faculty of Engineering, Universitas

Indonesia, Depok 16424, Indonesia


Abstract. This study aims to analyze the analysis of consumer behavior. Then the results of

the behavior are segmented on ABC operators, who will look at their behavior by analyzing

their use based on the brand of smartphone. The number of samples to be taken is one million

samples and having the top 5 brands of mobile phone vendors used by customers from one of

the Indonesian mobile provider. The highest segment for a whole has the highest segment

average ARPU is Apple brand users, which have an average ARPU of around IDR 116,000.

The Medium segment, including Xiaomi, Vivo, dan Oppo users, which have an average ARPU

of around IDR 85,000, and the lowest segment is Samsung users who have an average ARPU

of around IDR 74,000. From the results of the analysis above, we can conclude that creating

three-segment pricing for customers for further strategic decisions.

Keywords: ARPU, Segmentation, Cluster, Smartphone

Entropy and Morphological Algorithm for Hyperspectral

Anomaly Detection

Ferdi Andika1 and Mia Rizkinia1*



Abstract. Anomaly detection is one of the challenging topics in hyperspectral image

processing due to its high spectral resolution. In this paper, a novel hyperspectral anomaly

detection method, called entropy and morphological algorithm, is proposed. This method

consists of three steps. First, select a band containing rich information for anomaly detection

using a novel band selection algorithm based on entropy. Second, extract the background of

the selected band by applying morphological operation. Then, detect the anomaly by removing

the background from the selected band. Experiments conducted on real hyperspectral data sets

show that the performance of our proposed method is quite competitive in terms of detection

accuracy and computation time.

Keywords: entropy, morphological operation, anomaly detection, hyperspectral image

Oxygen Saturation Parameter Calibration Effort on MAX30100

Sensor Module Based on Arduino-Uno

Juan Karnadi1, Ibnu Roihan2 and Raldi Artono Koestoer2*

1 Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru

UI Depok, West Java, 16424, Indonesia 2 Heat Transfer Laboratory, Department of Mechanical Engineering, Faculty of Engineering,

Universitas Indonesia, Kampus Baru UI, Depok, West Java 16424 Indonesia


Abstract. The infrared light emission on MAX30100 sensor module does fully enable several

parameters' digital reading. There also includes oxygen saturation parameter as stated on the

datasheet. The aim of this research is to enhance the oxygen saturation parameter's result of

Arduino digital output precision through calibration effort. The measure is to near the oxygen

saturation parameter reading on MAX30100 to finger probe sensor on diagnostic tool named

patient monitor. The approach is actually engaged by calculating error reading results from

each adult, then averaging them all. No adult has an error reading equal to or greater than ±

3%. According to this following result, the error reading rate is ± 1,59% towards finger probe.

Keywords: oxygen saturation, parameter, calibration effort, MAX30100, reading, result

Capability Development Strategy of XYZ to Utilize Business

Opportunities of ATR72 Engine (PW-100 Series) Maintenance,

Repair and Overhaul.

Akbar Romadhona Gifari*, Djoko Sihono Gabriel and Rahmat Nurcahyo

Department of Industrial Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Growth of ATR72 in Asia Pacific will increase to 1330 aircraft in the next two

decades, while Indonesia currently operates approximately 118 aircraft. In fact, ATR72 in

Indonesia is still overhauling its engine (PW-100) by outsourcing abroad because lack of

capabilities to capture the opportunities of domestic market. The aim of this study is to

formulate the strategy of Maintenance, Repair and Overhaul (MRO) company, XYZ, in

developing new capabilities to grab PW-100 overhaul business opportunities. Therefore, it is

necessary to use Strengths, Weaknesses, Opportunities and Threats (SWOT) analysis to

analyze the strategic factors of MRO and Analytic Network Process (ANP) as a quantitative

measurement among the strategies. The ANP-SWOT analysis does not provide a specific

description regarding company’s business model. This paper uses Business Model Canvas

(BMC) to complete ANP-SWOT analysis by defining company's business model and establish

more specific strategies for management decisions in developing capability.

Keywords: Overhaul, Capability, BMC, SWOT, ANP

Economy Analysis of Wave Power Plant in Southwest Sumba –

Indonesia with Oscillating Water Column Wave Energy

Converter

Adiv Gayu Athallah1*, and Mujadid Aldin Albasyir1

1 Ocean Engineering Department, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia


Abstract. Electricity ratio in Southwest Sumba only reached 65,57% in 2019 with high

electricity price. Whereas Southwest Sumba has 24 KW/m wave energy as energy potential.

This study aims to calculate Levelized Cost of Energy (LCOE) on Southwest Sumba with

Oscillating Water Column (OWC) as wave energy converter. Characteristic dimension of

OWC and number of devices installed are chosen as variables to select the best condition with

lowest LCOE. Wave energy flux is assessed first by considering average wave height and

period. Secondly, power installed and power performance are calculated with different

scenarios to analyze capital and operational expenditure. Finally, LCOE is obtained by

dividing sum of expenditure with annual electricity production. As a conclusion, the best

economical condition is Rp2.153/KWh with 30 metre characteristic dimension and 4 devices

installed. Maximum power installed and power performance are 2880 KW and 1209.6 KW,

respectively.

Keywords: Characteristic Dimension, Levelized Cost of Energy (LCOE), Oscillating Water Column

(OWC), Wave Energy

Prediction Analysis of Fixed Broadband Users in Indonesia until

2025

Billy Aji Wicaksono 1 , Muhamad Asvial 2

1 Department of Electrical Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Department of Electrical Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. This paper discusses the intention to use fixed broadband with the Technology

Acceptance Model approach and predicts fixed broadband users in Indonesia using time series

data. This research is associative quantitative research and forecasting the ARIMA model. The

results showed that the intention to use fixed broadband was strongly influenced by perceived

ease of use, perceived usefulness, and user attitude. Therefore it is recommended that in

marketing, fixed broadband products feature ease of use features, benefit features that can

encourage a positive attitude towards the intention to use fixed broadband.

Keywords: Technology Acceptance Model, ARIMA, Fixed Broadband.

Bioinformatics Approach on Unsuccessful HIV/AIDS Vaccine

Design

Ziyan Muhammad Aqsha, Alif Muhammad Hafizh, Habib Alfarobi, Joshua Yoshihiko

Tampubolon, Muhammad Shaleh, Muhammad Alsyifaa Dharmawan, Muhammad

Maulana Ghiffary, Saffan Firdaus


[email protected]

Abstract. The pursuit of an effective and safe HIV-1 vaccine is a global health priority.

Previous vaccine designs showed disappointing results. After multiple HIV-1 vaccine efficacy

trials, only one RV144 vaccine showed a small degree of efficiency. To improve future research

of the HIV-1 vaccine, evaluation of the previous vaccine design is necessary. The

bioinformatics approach is one of the effective ways to evaluate vaccine designs. Methods and

tools used in this paper were NCBI and Vaxign. Among 15 HIV-1 proteins, the HIV-1 Envelope

Surface Glycoprotein gp120 (NP_579894.2) has the best adhesin probability, which was 0.41,

approaching the cutoff value (0.51). Vaxitop was used to find the most consistent epitopes and

the result was none of the epitopes are consistent because the adhesin probably is less than the

cut-off value. This paper will discuss whether low adhesin probability is the reason behind the

previous unsuccessful vaccine design.

Keywords: HIV-1, vaccine design, bioinformatics, NCBI, Vaxign

mailto:[email protected]

A Study on Application of Automation Technology in Logistics

and Its Effect on E-commerce

Brilian Putra Amiruddin1* and Denisse Rochmad Romdhony1

1 Department of Electrical Engineering, Faculty of Intelligent Electrical and Informatics Technology,

Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia


Abstract. Since the world transformed into the digital era, e-commerce is the real thing to

concern for everyone, not only limited to the business people but also for people who want to

buy something without hassle. Furthermore, as an estimation global retail e-commerce sales

almost grow doubled in range of three years from US$ 1.3 trillion in 2014 to US$ 2.3 trillion

in 2017 and this growth trend will still last until the future. However, this trend demands

innovative solutions, applying automation technology to e-commerce logistics is one of the

solutions which significant to the future of ecommerce. Based on that, this study will principally

talk about how can we apply automation technology in logistics also discuss its effects both

what advantages could be gotten and what barrier would be faced by e-commerce towards

using the automation technology in logistics so the ecommerce industry will be ready for future

disruption.

Keywords: Automation, E-commerce, Implementation Effect, Logistics

Determining Factors for Successful Coal-Fired Power Plant PPA

in Indonesia Market

Alvin Setiawan Haryono1* and Po-Han Chen2

1 Faculty of Engineering, National Taiwan University, Taipei 106, Taiwan 2 Faculty of Engineering, National Taiwan University, Taipei 106, Taiwan


Abstract. As a developing country, Indonesia have strong demand for electricity. However,

Indonesia government have limited funding capability to meet this demand. Consequently,

private investment is needed to fill in the funding gap. Power Purchase Agreement (PPA) is

the type of contract where the government purchase electricity at agreed price from private

electricity producer. In Indonesia, coal-fired power plant is the most common type of electricity

producer. Therefore, the objective of this research is to understand the key success factor for

successful coal-fired PPA in Indonesia market. To complete this objective, the researcher first

conducted literature review. Second, expert interviews to reiterate the initial findings. After

that, the questionnaire was distributed to individuals with knowledge about this topic and the

result of the questionnaire finally analysed. The researcher found that there are 21 key success

factors for successful coal-fired PPA. These 21 factors can be further reduced into seven group

factors.

Keywords: Indonesia, Electricity, PPA, Key Success Factor

Designing the Flow Improvement of COVID-19 Pandemic

Patients Treatment Using Discrete Event Simulation

Nathanael Antonius1, Biani Masita Himawan1 and Alya Nabila Putri1


*e-mail: [email protected], [email protected], [email protected]

Abstract. The COVID-19 pandemic has imposed challenges for healthcare service in

Indonesia in which limited healthcare resources can be overwhelmed by huge number of

COVID-19 new cases. National Government and healthcare organizations are required to

decide the best strategy to treat COVID-19 patients efficiently. This study aims to improve the

efficiency of COVID-19 patients’ treatment flow. Using Discrete Event Simulation (DES), this

study proposes three improvement models. Model 1 involves an electronic hospital referral

system. Model 2 involves hospital information system and increases room capacity. Model 3

combines both models. Model 1 reduces average queue length at bottleneck hospitals by

40.4%. Model 2 performs best in reducing blocked time i.e. average time a patient has to wait

for an available room or service by 77.64%. Meanwhile, model 3 performs best in reducing

cycle time i.e. the average amount of time needed for a patient to go through the system by

42.11%.

Keywords: COVID-19, Cycle time, Discrete Event Simulation, System Modeling, Treatment flow

Architecture of Threading and Tracing:

Crack, Crease and Cuts as a Mechanism to Fabricate

Architecture

Stanley So


Abstract. This paper proposes a design approach based on the knowledge of threading and

tracing the everyday, being through there observing creases, cracks and cuts in a context

enabled us to sense how society threads the everyday. Through threading and tracing

architecture is considered as an act of negotiation where it interconnects fragments of society

and has the ability to interpenetrate the threading made by society. The discussion in this paper

begins with understanding architecture as an act of weaving the complexities and diversities

in society, continued with understanding the main component of weaving: threading and

tracing. Through an explanation of threading and tracing this paper will explain the benefit of

observing micro traces such as creases, cracks and cuts enabled us to see glimpses of vectors

applied in the everyday and ending the discussion with its application in architecture and how

would this design approach benefit architecture.

Keywords: threading, tracing, negotiation, weaving, creases, cracks, cuts, everyday, vector

LPG for Power Generation in Indonesia: Techno-economic and

Distribution Analysis

Y. Dony Antarius1*, Rinaldy Dalimi2

1 Department of Energy System Engineering, University of Indonesia, Indonesia

*Email: [email protected]; 2 Department of Electrical Engineering, University of Indonesia

Abstract. Application of LPG for power generation in Indonesia can be replacing the usage

of fuel-oil at the existing power plant. It turns out that LPG is a flexible, low-emission

alternative to other fuel types. Handling LPG is also cheaper and saver since it does not have

to be transported in cryogenic temperatures neither high pressurized tank like in the case of

LNG or CNG terminal. This paper presents a techno-economy and distribution analysis, which

include matrix analysis of how feasible a power plant can be converted to LPG, Capex, Opex,

distribution cost, and distribution clustering scheme for the LPG supply chain. From 13

distribution clusters, the study found the energy price of 5 clusters are very competitive (<4

USD/MMBTU), 4 cluster are average competitive (between 4 to 6 USD/MMBTU), and 4 other

clusters are not competitive (>6 USD/MMBTU). The conclusion is, LPG might be a good

solution for gasification program.

Keywords: LPG power generation; energy system saving; LPG/ LNG price.

Feasibility Study Of Deactivating The Purge Air Compressor To

Increase Reliability Power Plant Operations

(Study Case: PLTGU Blok 2 Muara Karang)

Datu Setyanto1, Rudy Setiabudy2*

1 Departemen Teknik Elektro Fakultas Teknik, Universitas Indonesia, Depok 16424, Indonesia 2 Departemen Teknik Elektro Fakultas Teknik, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Gas Turbine Generator is used by PLTGU Blok 2 Muara Karang consist of two kind

of fuel that are oil and gas. This Gas Turbine has equipment namely Purge Air Compressor

(PAC) which been used for prevent carbonization process of fuel oil in the Combustion Nozzle

and also prevent the back flow of gas fuel to Pilot Fuel Oil Manifold. The used of PAC assesed

to be uneffective because of the equipments can be potential caused of outage, derating, start

up failure of Gas Turbine, maintenance cost and auxiliary power are high. In order to mitigate

the problems, deactivation of PAC is carried out by removing the pipes in the Fuel Oil Firing

System, then plugging on pipe and nozzle. From this innovation, overhaul can be accelerated

for 16 hours and can remove operational cost for 2,499,814,080 rupiah anually. This will

provide a profit amounting 15,205,413,943.65 rupiah for 10 years.

Keywords: Purge Air Compressor, Gas Turbine, outage, derating, start up failure, maintenance cost,

auxiliary power cost

Study of Free Governor Response at a Combined Cycle Power

Plant to Support Priok Island Reliability

Danu Nuryanto1, Chairul Hudaya2*

1,2 Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia,



Abstract. The main component of network safety is the primary regulation which is mandatory.

Not only do units which are not engaged in primary regulation make the effort of others, but

they place themselves at risk. A network that lacked sufficient primary control is at risk of

complete or partial black-out. Priok generation as a Combine Cycle Power Plant (CCPP)

activates its governor system with a 4 percent droop setting in accordance with the provisions

of the grid code. The fastest governor response results in block 1-2 gas turbine while the

governor response with the largest total load capacity in blocks 3-4. This is in accordance with

the characteristics of each unit.

Keywords: free governor, primary regulation, speed droop, CCPP

Effect of Temperature on Specific Surface Area Activated

Carbon Derived from Green Coke

Mahathir Marliansyah1, Iyan Subiyanto1, Chairul Hudaya1,2*

1 Energy System Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424,

Indonesia


Abstract. Activated carbon is one of the most promising material which have so many

applications such as water purifier, and energy storage devices. However, the fabrication of

activated carbon should be optimized, especially it can be extracted from the abundant

resources where can be foundanywhere.In this work,we use green coke byproduct of petroleum

refinery whichbeing processed and activated to become the alternative for cathode material in

the storage devices. Simple activation method were used activatethe green coke, start

fromcarbonized it at 400 0C, then activated using 4: 1 KOH at temperatures of 600, 700, and

800 0C,then washed using HCl after that dried in the oven at 100 0C for 24 hours. The results

obtained a surface area of 2024 m2 / g at an activation temperature of 700 0C. green coke-

derived activated carbon is the best material candidate to be applied as a cathode active

material in the storage devices.

Keywords: Green coke, Activated Carbon, Temperature, Specific Surface Area, KOH, HCl

Survey Service Company Customers Segmentation Using

Recency Frequency Monetary Value (RFM), and K-Means

Clustering

Agus Suryanto1, and Isti Surjandari2

1 Department of Industrial Engineering, Faculty of Engineering, Universitas Indonesia, Salemba,

10430, Indonesia

e-mail: [email protected] 2 Department of Industrial Engineering, Faculty of Engineering, Universitas Indonesia, Depok, 16424,

Indonesia


Abstract. The conformity assessment of standard and regulation is conducted by Conformity

Assessment Body (CAB). The conformity assessment activities that applied to goods, services,

systems, or processes are carried out through testing, inspection and / or certification (TIC).

CAB is also known as a survey service company. Survey service companies in Indonesia have

a lot of services with many customers spread nationwide. The large number of customers make

large transaction data that needs to be segmented to determine sales and marketing strategies.

Based on the previous research, not many studies have been found that take service companies

as object of segmentation, especially survey service companies. This study is segmenting

customers of survey service companies using Recency, Frequency, & Monetary Value (RFM),

and K-Means Clustering. This study processed 181,724 transaction data of a service company.

Based on RFM, customers can be divided into 3 segments that are 646 Key Account customers

with 70.73% revenue portion, 10,037 Regular Account customers with 29.06% revenue

portion, and 3,720 customers with a revenue portion of 0.21%. Based on K-Means, customers

can be divided into 21 clusters. The number of cluster, is suit to number of Category in

Indonesian Standard of Industrial Classification (ISIC). According to this study, the RFM and

K-Means not only can be used to segment customers of product manufactured, but also can be

used to segment customers of survey service company, and the result of segmentation can be

used as references for making sales and marketing strategy.

Keywords: Recency Frequency Monetary Value (RFM), K-Means Clustering (KMC), Testing

Inspection Certification (TIC), Survey Service Company, Segmentation

AUTOMATA (Automated Repair System of Power Transmission

Line)

Gilbert Lesmana1 , Mark Clio Davis2

1 Metallurgical and Material Engineering, Faculty of Engineering, Universitas Indonesia, Depok

16424, Indonesia 2 Electrical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. This paper aims on the subject of decreasing electrical outages or its duration,

automated repair applications for transmission substations, and actively preventing outages.

The electrical system failures cause outages and can be prevented by automated-repair

technology. This automated repair system involves communication systems and diagnostics.

The contribution of this paper includes the presentation of the state-of-the-art, practical

techniques and measures for preventing and reducing outages in transmission substations

which, if properly adopted, can significantly improve transmission system reliability.

Keywords: automatic repair, power transmission failure, digital monitoring and protection, outage

reduce, preventive methods.

Engineering of the Cyber Intelligence Business Model in

Indonesia

Rio Yunia Pratama1*

1 Information Network Security Management, Electrical Engineering Departement, Faculty of

Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Law of the Republic of Indonesia Number 3 of 2002 concerning National Defense

has stated that the nature of threats to a country consists of military threats and non-military

threats. The era of globalization which is marked by the development of scientific,

technological, communication, and information advances greatly influences the pattern and

form of threats. The source can also come from abroad and from within the country. The most

obvious threat at this time is of course the non-military threat of technological dimension or

what is known as the cyber threat. This cyber threat can be done by state actors according to

their national interests, but can also be done by non-state actors such as individuals, groups,

or organizations according to their respective interests. So that potential cyber threats can be

mitigated, anticipatory action is needed, one of which is by implementing early detection. The

function carried out by almost every country in conducting early detection is Intelligence. This

intelligence function is used by the state to find out the dynamic development of the country's

internal and external strategic environment. The need for diverse intelligence functions has led

to the formation of several intelligence organizations. Different data collection methods can

also trigger the formation of special intelligence, one of which is in the field of cyberspace

known as cyber intelligence. A thorough understanding of the implementation of cyber

intelligence in Indonesia must be qualified so that the complexity and broad range of control

of cyber intelligence can be properly operationalized. Therefore we need a concept of the cyber

intelligence business model that is relevant and easily understood by various parties working

in the field of cyber intelligence. In this study, the utilization of the Business Model Canvas

(BMC) framework was carried out by engineering nine business elements in the framework.

The results of this study place the President and the Intelligence Community as the main

customers.

Keywords: cyber threat, cyber intelligence, business model canvas

Uplifting 4G Network Technology: The Analysis of LTE Licensed

Assisted Access (LAA) Implementation for Dense Urban Area in

Indonesia

Ni Made Dwidhyana Ksamawati1, Dadang Gunawan2*, and Imam Nashiruddin3**

1,2 Graduate Program of Telecommunication Management Dep. Of Electrical Engineering, Universitas

Indonesia, Jakarta 10424, Indonesia 3 Center for Regulation & Management of Telecommunication School of Electrical Engineering,

Telkom University, Bandung 40257, Indonesia

e-mail: [email protected], *[email protected], **[email protected]

Abstract. The number of mobile network subscribers has increased over the past few years

rapidly. 4G LTE, as a part of wireless technology, made a significant contribution through the

coverage expansion around countries but still faces critical issues, namely spectrum scarcity.

However, the growth of data users and data consumption seems to be increased. The Mobile

Network Operator (MNO) tried to provide the infrastructures and services that capable of

responding to the necessity of capacity, reliability, and availability. 3GPP saw the opportunity

by introducing the LTE-Advanced Pro (4.9 G) technology with 3GPP Rel-13 that is called

Licensed Assisted Access (LAA). LAA uses carrier aggregation technology, both licensed and

unlicensed band of 5GHz. Through utilizing the unlicensed band, MNO tried to face the

necessity of improvement with the cost-efficiency. This paper is tried to introduce the LAA

implementation in a dense urban area of Indonesia. Based on the calculation result of capacity

and coverage planning of LAA network, Jakarta, as the capital city of Indonesia with central

business and high population density, an average of 15,900 people per square kilometers is

projected to be consumed 4.22 Gbps per square kilometers of generated data traffic. The area

also needs additional 1,419 LAA sites in 2025, with a cell average throughput of 24.7 Mbps

downlink and 29.64 Mbps uplink. In Addition, coverage planning has to be done with the

estimation of 40 points of interest area with 647 additional sites of LAA to meet the future

demand of mobile network data traffic.

Keywords: 4G, LTE, LAA, dense urban, unlicensed

Preliminary Design of Rice (Oryza sativa) Straws and Husks

Waste Valorization Using Burkholderia cepacia to Produce

Poly3-hydroxybutyrate (PHB) based Personal Protective

Equipment (PPE) in Response to Covid-19 Pandemic

Nadya Yasmin Dicky1* , Mochammad Daffa Angkasa1 , Ghazy Dicky2

1 Bioengineering Department, School of Life Science and Technology, Institut Teknologi Bandung,

Bandung 40312, Indonesia 2 Mechanical Engineering Department, Faculty of Industrial Technology and Systems Engineering,

Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia

*email: [email protected]

Abstract. Amidst Covid-19 pandemic, imminent needs of personal protective equipment (PPE)

have led to shortages and surged medical waste up to 8,580 ton daily in Indonesia. This waste

consists of non-degradable polypropylene materials that puts the environment in peril. This

study explores the implementation of biorefinery concepts using Burkholderia cepacia bacteria

as biomass that converts 4.8 million ton of annual rice straws and husks waste (RSHW) in

Indonesia into poly-3-hydroxybutyrate (PHB) bioplastic for eco-friendly PPE production,

which demonstrates promising potentials to substitute conventional Polypropylene-based PPE

that possess similar properties. These RSHW that pollute the environment, can instead be

utilized to simultaneously produce approximately 110 trillion surgical masks, 62 trillion poly

gloves, and 133 million protective suits. Mass balance, process flow, & literature studies were

used to design the system. PPE manufacture is forecasted to grow 8.7%, thus showing potential

market size for PHB based PPE with sustainable impacts to environment.

Keywords: poly-3-hydroxybutyrate (PHB), rice straws and husks waste, Burkholderia cepacia,

personal protective equipment (PPE), biorefinery

Desain of a Hybrid Diesel-PV/Wind System in Isolated Island

Viki Kurdiansyah1, Budi Sudiarto2*

1 Electrical Engineering, Faculty of Engineering, University of Indonesia, Depok 16424, Indonesia 2 Electrical Engineering, Faculty of Engineering, University of Indonesia, Depok 16424, Indonesia


Abstract. There are large number of the remote island in Indonesia that isolated and not

connected to the utility grid. Sabu Island, a part of Nusa Tenggara Timur is an example of

isolated area that far from the mainland. Electricity resource of Sabu Island is 100% from

diesel generator. The electrification ratio is 26.67%. Huge potential renewable energy

resource not yet implementing on Sabu Island. This paper assesses the potential of

implementing the hybrid system with different configuration of diesel-PV/WTG without energy

storage devices using technical and economic analysis. HOMER simulation software is used

to perform feasibility study and to determine the optimized of the hybrid system. Characteristic

of solar radiation and wind profile determined optimized specification of PV and WTG. This

leads to optimal configuration which has the lowest cost of energy and fuel consumption,

release the smallest amount of carbon emission and producing the lowest of excess of

electricity.

eywords: solar PV, wind turbine, hybrid optimization, cost of energy, Sabu Island

Selection of IoT-based Technology for Electric Smart Meter

on PLN Disjaya

Adi Mulyono1 and F. Farizal1

1 Department of Industrial Engineering, Universitas Indonesia, Depok, Indonesia

Email : [email protected]; [email protected];

Abstract. With so many platforms or protocols developed by several organizations or

institutions, such as LoRa, NB-IoT and SigFox that have their own advantages and limitations.

While it takes a large and long-term investment to deliver IoT technology. Apart from that,

losses caused by the use of conventional meters on electricity customers cause a decrease in

income by electricity supply companies. In this study aims to choose the internet-based

technology of things for electricity smart meters in the PLN Disjaya region between three

LoRa, NB-IoT and Sigfox technologies. This research is doing network design, coverage

analysis, capacity analysis and network utilization, cost benefit calculation and analysis, data

rate speed and proprietary. From the analysis results obtained SigFox superior in terms of

coverage, capacity and network utilization, cost benefits (NPV, IRR, Payback Period, BCR,

ROI), LoRa superior in terms of proprietary and NB-IoT superior in terms of data rate speed.

Keywords: LoRa, NB-IoT, SigFox, Coverage, Capacity, Cost Benefit Analysis.

Handling and Troubleshooting Electric Bus Battery System

Failures without Battery Management System

Yoso Herwansyah1*, Chairul Hudaya2

1 Universitas Indonesia, Department of Electrical Engineering, Depok 16424, Indonesia 2 Universitas Indonesia, Department of Electrical Engineering, Depok 16424, Indonesia


Abstract. Electric buses in mass transportation sectors are demanding interests during the

last decade due to its higher efficiencies and clean technology. Knowledges of e-buses optimum

utilization are needed in the form of maintenance or handling to minimize downtime during a

malfunction had occurred. This study is explaining about troubleshooting and step by step

handling of an electric bus that has experience problems with the battery system. Through this

experiment, the e-bus has succeed to operate again by doing reconfiguration on the battery

system without any battery replacement. Battery test results show very wide characteristics

variation from the used battery and have led to a necessity of knowing each used battery

characteristics through full charge and discharge test to remove the weak battery out of the

battery system. The absence of a battery management system before and after the fixes is known

to be the cause of swollen battery problems.

Keywords: electric bus, battery maintenance, used battery, re-configuration, battery balancing

Performance Evaluation of Chaotic, Advanced and Data

Encryption Standard on UDP Data Stream in a Non Error Free

NS3 Simulated Point-to-Point Network

Elvian Syafrurizal 1*, F. Astha Ekadiyanto 1*, Anak Agung Putri Ratna1* and

Kalamullah Ramli 1*

1 Dept. of Electrical Engineering Universitas Indonesia, Depok 16424, Indonesia

*e-mail: [email protected], [email protected], [email protected],

[email protected]

Abstract. In data communication, with increasing number and severity of day to day

cyberthreat attacks, encryption becomes one of the crucial tools to ensure the security of data

in transit. Although AES, especially AES-256, currently considered as the successor of DES

that can give such security, it will not remain a status que. With the advancements of quantum

computing research, the security provided by AES is not going to stand for long. Thus, the

research for chaotic map-based encryption, Chaotic Encryption Standard (CES) will

eventually become prospective candidate for AES successor. Nevertheless, encryption method

like CES not only needs to be resistant to cracking effort, but it also has to retain the

information held within while being transferred. In this experiment, streams of data encrypted

in CES, in this case CES(PMCS/E), is compared to the ones encrypted in AES-256 and DES.

All are run through an NS3 simulation with non error free network using UDP as packet

encapsulation. The results of the experiment show that even though CES(PMCS/E) is indeed

harder to crack than AES-256 and DES, it poses higher risk to be unreadable in a non-error

free network due to the large block bit size which is 16 times of the AES-256 and 32 times of

the DES.

Keywords: encryption, CES, AES, DES, UDP, error

Structured Failure Detection Framework for Troubleshooting

MPLS L3VPN Services on Mobile Backhaul (MBH)

Implementation Scenario

Iqbal Firmansyah1* and Ruki Harwahyu1



Abstract. Forward trend of transport solution still involving MPLS technology due to its prior

large implementation [1]. Currently MPLS technology not only applied in backbone, but also

in access section of the network, like in Mobile Backhaul (MBH) topology [2]. Making the

increment of MPLS network size. MPLS L3VPN Network is rely on various network protocol

[3]. Its need IGP protocol, can be ISIS or OSPF, for node reachability. BGP for VPN label

exchange, and LDP/RSVP for MPLS signalling. Each of protocol need to be run properly to

deliver services. When problem occurs, troubleshooting need to be perform to diagnostic which

protocol and section is the root cause. Troubleshooting steps for each protocol already

provided by vendor as operation tutorial, while failure detection as an integrated system is

depend on skill set and experience of each engineer who handle the problem. Resulting

variance approach and non-contiguity progress of troubleshooting. In huge size of network,

such as MBH implementation scenario, this condition can overweight the operational load.

This paper offer solution with a structured failure detection in troubleshooting process, to

standardize the process with definitive result in each step. Enable the process to be perform in

parallel, contiguous and trackable.

Keywords: MPLS, L3VPN, BGP, ISIS, Mobile Backhaul, Troubleshooting

05M e ta l l u r g y

a n d M at e r i a l sE n g i n e e r i n g


The 5th

2020

Synthesis of Li1-XNaxFePO4/C Composite Using Combination of

Wet Chemical and Solid-State Reaction Methods

Heru Kuntoro Ashadi1,2, Nofrijon Sofyan1,3

1 Department of Metallurgical and Materials Engineering, Faculty of Engineering, University of

Indonesia, Depok 16424, Indonesia 2 [email protected]

3 Author to whom any correspondence should be addressed. [email protected]

Abstract. At the present, one of the active materials used in lithium ion battery cathode is

LiFePO4. In this work, synthesis and characterization of Li1-xNaxFePO4/C composite has been

carried out. The synthesis was performed via combination of wet chemical reaction processes

to obtain FePO4 and continued with the process of mixing through solid state reaction method

to form Li1-xNaxFePO4/C. Nominal x ratio of sodium to lithium was varied from 0 to 5 wt.%.

The calcination was carried out for 1 hour at 350 °C and continued with sintering at 750 °C

for 4 hours under nitrogen environment. Morphological characterization and microstructure

observation were performed using scanning electron microscopy (SEM) equipped with energy

dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD), respectively. The XRD

results showed that the obtained active material has uniformity in comparison to the LiFePO4

standard with olivine structure for x = 0. With the addition of sodium, there is an indication

that the peak shifted to the lower at the optimum angle. Observation on the morphology showed

that the particle size of the obtained active material ranges from about 1 to 3 µm, whereas

analysis on the composition showed consistent results. This is as an indication that the

synthesis of Li1-xNaxFePO4/C composite has been carried out successfully.

Keywords: battery cathode, lithium ion, solid state reaction, wet chemical method

Thermal Decomposition Behaviour and Kinetics of PLA and

PLA/Kenaf Composite

Agita Phasa1* , Jaka Fajar Fatriansyah1 and Siti Norasmah Surip2

1 Department of Metallurgy and Materials Engineering, Faculty of Engineering, Universitas

Indonesia, Depok 16424, Indonesia 2 Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Malaysia


Abstract. In this study, the thermal decomposition behaviour and kinetics of polylactic acid

(PLA) and PLA-kenaf composite were investigated using thermogravimetric analysis, to

determine the effect of kenaf fibre addition on its crystallization characteristics. The fibre used

is kenaf core fibre and conducted using Nakamura model which is a modified Avrami model.

The model is used for to determine the Avrami index, kinetic parameters, and activation energy

of PLA and PLA-kenaf composite. The results show that the addition of kenaf fibre into the

PLA can reduce the value of the Avrami index, so the crystallization process that occurs tends

to have a direction in only one dimension. This can increase the tensile strength of the

composite material. As well, the addition of kenaf fiber reduce the activation energy needed

for nucleation, thus increasing the rate of crystallization from PLA.

Keywords: thermal decomposition, PLA, kenaf fiber, Avrami, Nakamura

Application of EIS in Measuring Corrosion Rate of Aluminum

Slag Concrete Reinforcement in Chloride

Wahyu Budiarto1*, Nono Darsono2 , Yudi Nugraha Thaha2 and Rini Riastuti1**

1 Department of Metallurgy and Material Engineering, Faculty of Engineering, Universitas Indonesia,

Depok 16424, Indonesia 2 Research Center for Metallurgy and Material, Indonesian Institute of Science, Serpong 15343,

Indonesia

*e-mail: [email protected];

**) co-author e-mail: [email protected]

Abstract. Reused of aluminum dross as a partially sand replacement in a concrete structure

to reduce the environmental defilements and as an alternative raw material source for sand

replacement were studied. The effect of aluminum dross filler fraction on compressive strength

was characterized by uniaxial compressive strength test. Corrosion resistance of concrete

structure was studied by means of potentiodyanamic polarization and electrochemical

impedance spectroscopy. Structure evolution after concrete dry-immersion in chloride ion for

30 days was evaluated by scanning electron microscopy. It was found that the compressive

strength of concrete tends to decrease with growing dross aluminum fraction. Electrochemical

studies of concrete display the enhancement of corrosion resistance with the increasing of

dross aluminum fraction. The consequences demonstrate the strong influence of aluminum

dross on compressive strength and corrosion resistance of concentrate modification.

Keywords: concrete, aluminum dross, compressive strength, corrosion, potentiodyanamic polarization,

electrochemical impedance spectroscopy

Production Process and Properties Comparation of Tin - Zinc,

Zinc-Nickel, and Tin-Zinc-Nickel Electroplate on Rack

Electroplating

Daniel Janthinus Kristianto*, Rini Riastuti**

Department of Metallurgy and Materials Engineering, Faculty of Engineering, Universitas Indonesia,



**corresponding author e-mail: [email protected]

Abstract. This research aimed to produce tin-zinc-nickel coating using a single bath by

variation of the applied electroplating parameters and compare each property of tin-zinc, zinc-

nickel, and tin-zincnickel electroplate. Tin-zinc-nickel electrodeposit is produced using rack

electroplating onto alloy steel, using DC and pulse electroplating from sulphate-based baths.

The coatings and the various electrodeposition processes were evaluated by thickness

measurements, current efficiency calculations, composition determination using energy

dispersive X-ray analysis and SEM to examine the morphology. Corrosion characteristics were

investigated by neutral salt fog exposure and electrochemical immersion tests including

galvanic and polarization measurements. Other properties such as microhardness and surface

electrical conductivity were also investigated. The results show that the addition of tin into the

zinc-nickel electroplate bath can increase the value of corrosion resistance, electroplate

adhesion, conductivity, and appearance of the electroplate.

Keywords: tin-zinc-nickel coating, rack electroplating, sulphate-based, corrosion characteristic,

properties, electroplate

An Early Stage of Medium Density Fiberboard (MDF)

Manufacturing Process from Pineapple Leaf Fiber

Nurul Hikmah1*, Dalhar Susanto1 and Emirhadi Suganda1



Abstract. In this paper, Medium Density Fiberboard (MDF) manufacturing experiment

conducted using pineapple (Ananas Cosmosus) leaf fiber as an alternative to solid wood which

is the main raw material in MDF manufacturing in general. This paper is an early stage of

research that aims to explore the process of making MDF using pineapple leaf fibers without

adhesive (binderless). The method used is an experiment by making pulp with a semi-chemical

process and wet molding technique. This experimental process shows that there are several

obstacles related to the MDF manufacturing process, especially in the semi-chemical process

using NaOH solution and the MDF molding process which needs to be studied further. Besides,

the weight of pineapple leaf fiber pulp and MDF dry weight formed as findings of this

experiment can be used as a basis for determining the exact composition in the manufacture of

the MDF process in the next stage of research.

Keyword: MDF, manufacturing, process, pineapple leaf fibre

Comparative Study of Aluminum-Scandium Alloys with AHSS

for Lightweight Vehicle Application

Indrawan Rizki Josua Sitorus1*, Daniel Sahalatua Pardosi1 and Dartwin1

1 Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung 40132,

Indonesia


Abstract. Aluminum-Scandium (Al-Sc) alloys are promising material for future lightweight

vehicles because of their high specific strength in comparison to all metals that are used at

present. Comparative study in terms of mechanical properties and processing between various

Advanced High Strength Steels (AHSS) and Al-Sc alloys is carried out in this work. Results

show that Scandium addition of only 0.2 wt% to AA7136 can increase its specific strength up

to 251.15 MPa/gr/cm 3 . Compared to the latest AHSS that only has a specific strength of 184.28

MPa/gr/cm 3 , 7136-0.2Sc alloy can achieve a weight reduction of 26.62% thus improving fuel

ef iciency. Further research on Al-Sc alloys forming processes should be conducted to

overcome the current formability issues. Press-Forming followed by Paint Bake Cycle (PBC)

arguably the most suitable process at the moment to improve the formability of Al-Sc alloys as

it is satisfying for AA7075 T6 temper.

Keywords: Al-Sc alloys, AHSS, specific strength, formability, press-forming

Study of Fly Ash’s Lead Recovery From Smelting Batteries

I Made Rizky Mario Putra*, Dwi Marta Nurjaya

Department of Metallurgy and Materials Engineering, Faculty of Engineering, Universitas Indonesia,



Abstract. The increasing number of used accu is directly proportional to the increasing

number of lead processing industries. This increasing number will increase the amoiun of

waste in the processing of used accu, one of which is fly as. Fly ash processing includes

granulation, drying and smelting with the addition of additives FeO, cokes and Na2CO3. The

process of applies hightemperature rotary furnace. Based on the AAS test, the result shows

that the chemical compositon of lead produced in the smelting process meets the difference

(Sn, Sb, Cu and As). The yield of lead produced from the fly ash smelting process is almost

50% lower than the yield of lead produced from pure paste smelting. In the process of

recovering meets the lead by putting fly ash as raw material can be applied in order to produce

bullion.

Keywords: batteries, lead recovery, smelting, fly ash

Synthesis and Characterization of Nanocomposite TiO2/rGO for

Potential Active Layer in Perovskite Solar Cell

Khalisha R. O. Pramono, Marshall C. Sianturi, and Nofrijon Sofyan*

Department of Metallurgical and Materials Engineering, Faculty of Engineering, Universitas

Indonesia, Depok 16424 Indonesia


Abstract. In this work, nanocomposite TiO2/rGO deposited on an FTO glass substrate has

been carried out via spin coating method. Commercial TiO2 was firstly mixed with rGO at

different concentration before being deposited on top of an FTO glass substrate. Crystal

structure of the layer was characterized using X-ray diffraction (XRD), whereas the surface

morphology was examined using a field emission scanning electron microscope (FE-SEM). X-

ray diffractograms showed that the two phases of TiO2 and rGO were both detected, whereas

the morphological examination showed that the layer has been homogeneously deposited on

the FTO glass substrate. The performance of TiO2/rGO as an electron transport layer in the

perovskite solar cell is yet to be further confirmed.

Keywords: titania, perovskite, reduced graphene oxide, solar cell

Enhanced Performance of TiO2 Based Perovskite Solar Cells by

Nb2O5 Surface Passivation : A Review

Andre Yosi1,a, Nofrijon Sofyan1,b

1 Metallurgy and Materials Department, Faculty of Engineering,

University of Indonesia, Depok 16424, Indonesia

e-mail: [email protected], [email protected]

Abstract. TiO2 is a famous electron-transport-material (ETM) that uesd widely in perovskite

solar cells. Photo-catalysis effect is a highly concerned issue TiO2 based perovskite solar cells

(PSCs) because of its impact on device stability. Here to overcome this challenge we propose

to passivate the surface of TiO2 by a thin layer of Nb2O5, and then the device was prepared

using such modified TiO2. TiO2 was fabricated by chemical bath deposition (CBD) and sintered

at 450oC, Nb2O5 was fabricated by spin coating and sintered at relatively low temperature of

200oC. Superior stability of the perovskite absorber layers leading resulting high power

conversion efficiency (PCE) and long-therm stability. Utilizing this Nb2O5 surface passivated

enhanced stability of perovskite film. Moreover, implication of the surface passivation of TiO2

by Nb2O5 leading to the formation of highly crystalline, stable and dense perovskite film.

Keywords: perovskite solar cells (PSCs), TiO2, Nb2O5, chemical bath depositon (CBD), spin

coating

Usage Ratio of Polypropylene Based Plastic Straw during

Covid-19 Pandemic; Universitas Indonesia.

Maurice Handi1, Muhammad Trouerbach, Gilbert Lesmana, Muhammad Akbar,

Muhammad Rayhan, Baginda Rasuli, Muhammad Ramadhan, Krisna Wirawan.

Metallurgical and Material Engineering Faculty of Engineering. Universitas Indonesia,

Depok 16424, Indonesia.

Email: [email protected], [email protected], [email protected],

[email protected], [email protected], [email protected],

[email protected], [email protected]

Abstract. 1 in 4 Indonesian is responsible for 93 million usages of polypropylene-based plastic

straws daily, which makes Indonesia the second "best" contributor to plastic straw usage in

the world. Therefore, this research is conducted to see how a population sample of 100

undergraduate students of Universitas Indonesia (UI) is contributing to this problem.

Primarily, this research objective is to see if the COVID-19 pandemic has affected the usage

of plastic straws in UI environments. The data gathered will later be processed through data

science methods and statistical apparatus to ensure the best possible action to take in the

future. Currently, the result has shown a downward trend of using plastic straws after COVID-

19 pandemic, allowing us to conduct a hypothesis test to show how this trend needs to be

sustained to ensure the success of green city planning and sustainability of UI and Indonesia.

Keywords: Polypropylene, Hypothesis Test, Green City Planning, Sustainability, Data Science

Selection of Fused Deposition Modeling Printing Parameters

Using VIKOR

Antonius Danny Nugroho1 , Sugeng Supriadi2*

1 Departement of Mechanical Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Research Center for Biomedical Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Additive manufacturing process has gained much attention and huge impact on

manufacturing technologies. Fused Deposition Modeling is one of the common processes use

for manufacturing 3D printed product. FDM technology can produce plastic and plastic

composite products rapidly and only require less energy and lower cost compared to other

additive manufacturing technologies. In this paper composite filament PLA-Steel is used with

different level process parameter FDM, i.e. nozzle temperature, printing speed and printing

orientation. This paper focus on optimization of process parameter FDM using VIKOR

Technique to make product with good mechanical properties and less porosity.

Keywords: Optimization, VIKOR, Fused Deposition Modeling

Evaluation of Corrosion Under Insulation Risk Assessment using

Machine Learning

M. Sina Sulaeman* and Johny Wahyuadi M.

Department of Metallurgy and Materials Engineering, Universitas Indonesia, Depok, Indonesia.


Abstract. Prior to rising-up of artificial intelligence and big data utilization, quantitative risk

assessment in accordance with API 581 has been widely implemented to evaluate risk of

Corrosion Under Insulation (CUI). Later near to end of 2019, specific standard of Risk-based

management for CUI is offered to industrial market as bundle with cloud-based system

gathering data for machine learning evaluation of parameter in the standards. In actual

implementation, deviation of general rule assumption from international standard e.g. API 581

was observed when compared to inspection data. As previous study is focussed in the

determining of CUI corrosion rate, current study deploys machine learning to calculate

Possibility of Failure (PoF) value based on Classification module in the Python - Scikit-Learn

library. The stages of evaluation include evaluation base CUI corrosion rate in accordance

with API 581 compare to actual corrosion rate. Then, machine learning is trained using

controlled result and being compared with model developed based on actual operational data.

The result has shown that machine learning has capability to adapt with actual condition of

facility. This study indicates requirement of understanding additional parameter which is not

considered or partially engaged in existing standard. In addition, developing big-data of CUI

monitoring should be implemented in the future as part of Making Indonesia 4.0 strategy in

chemistry industry.

Keyword: Corrosion Under Insulation, Risk Assessment, Machine Learning

Defining Parameters For Form Dreived from Plant-Based

Materiality: Generative Design

Nurhidayat, Iqbal1 , Yatmo A.Y2 , Atmodiwirdjo P.3

1,2,3 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. This paper tries to show the material-based design method by defining the

parameters of the materiality of a material as form generation. The conclusion of this paper is

to make a list of parameters of materiality that will be used as form generation in generative

design. Through this method material which is generally only considered as a complement, is

able to be the main inspiration or the main basic consideration in the design process. Namely

by integrating the material, form and structure in the process as a generative design. Searching

for integration between these three can be done using a material-based design approach. This

search is intended to find and dismantle so that the materiality of a material can be translated

as parameters as form generation in generative design. The material selected in this paper

experiment is sugarcane.

Keyword: materiality, form generation, material-based design, generative design.

Metallurgical and FEM Analysis of the Failure Welded Rod Head

of the Hydraulic Cylinder Excavator Class 20 Ton

Syamsul B Purnomo and Winarto Winarto*

Department of Metallurgy and Materials Engineering, Universitas Indonesia, Depok, Indonesia.


Abstract. The failure of a welded rod head of the hydraulic cylinder excavator was

investigated by metallurgical and mechanical examinations of the failed rod head. The rod was

made of a high strength low alloy steel. Due to the broken rod head, the hydraulic cylinder

excavator was broken severely. The investigation was started with a thorough visual inspection

of the failed rod head. The lab analysis of the failed part was carried out by fractography,

microstructural observation, as well as chemical analysis and hardness measurement. The

observation showed that the fatigue failure at the weld toe occurred on the welded road head,

and there was evidence of fatigue indication in the failed surface. The microstructural changes

were due to the manufacturing process by welding. It was observed that the crack initiated by

the weld toe from the sharp edge and propagated by fatigue, and finally, the fracture was

completed. An analytical calculation parallel to the finite element method was utilized to

determine the analytical stresses due to substantial robust and continuous to work device

equipment. The failure of the broken rod head was evaluated by the finite element modal

analyses. Based on FEM analysis, there was a good agreement between the failure signs and

FEM results, which showed the broken rod head been initiated by the stress concentration of

weld toe before the failure occurred.

Keywords: welded rod head, fatigue failure, microstructure, hardness, and FEM analysis

06M e c h a n i c a l ,

M a n u fa c t u r ea n d M a r i n e



The 5th

2020

Vibration Analysis of Motor and Coal Crusher In Power Plant

Tanjung Enim 3 x 10 MW

Gurruh Dwi Septano1 , Hasan Basri1 *

1 Department Of Mechanical Engineering, Faculty of Engineering, Universitas Of Sriwijaya,

Palembang 30128, Indonesia


[email protected]

Abstract. Motor and Coal Crusher is a tool used to crush coal into a certain size, motor and

coal crusher that operate continuously will affect the ability of the work functions of the tool

in the coal destruction mechanism. In this experiments, The vibration analysis method is used

to monitored and detailed the health of the machine and any faults which may arise or have

already arisen. Motor and coal crusher vibration signal value are measured to identify the

characteristics of the vibration signal generated through measurements with vibration

measuring devices. Retrieval of vibration signal data is obtained by measuring the horizontal,

vertical and axial area of the motor and coal crusher with unload condition and load condition

of the coal. The resulting vibration signal is converted into a spectrum to determine the type of

vibration and damage based on ISO 10816 measurement standards.

Keywords: motors, coal crusher, vibration analysis, vibration signal, measurement

mailto:[email protected]

Scroll Compressor Selection for A Simple System of Low-

Temperature Organic Rankine Cycle Plant

Budi Ismoyo1, M. Idrus Alhamid1*, Nasruddin1, Muswar Muslim1 and Arnas Lubis1

1 Mechanical Engineering Department, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Heat sources such as geothermal, biomass, and others have the potential to recover.

Organic Rankine Cycle (ORC) plants can use to convert low-temperature heat sources into

electrical energy. The selection of a scroll expander for the Organic Rankine Cycle (ORC)

plant is critical because of the scroll expander functions in a specific geometry. This study will

analyze thermodynamic parameters that can use as parameters to select the type of scroll

expander. The simulation uses EES, n-pentane, R123, and R1233zd as working fluids. The

working fluids simulated at a constant pump flow rate of 4.5 liters/minute with a heat source

temperature range of 70-180 oC to get the volumetric vapor flow rate and expansion pressure

difference of expander. The simulation results at superheated temperature 100 oC show that

the specific suction expander volume needed by n-pentane, R123, and R1233zd are 125

cm3/rev, 100 cm3/rev, and 75 cm3/rev.

Keywords: organic rankine cycle, working fluid, scroll expander

Blue Electrocardiogram (ECG), ECG with Bluetooth Feature

integrated with Smartphone

William Jerrel Iskandar1), Raldi Artono Koestoer2,a), Ibnu Roihan3)

1,2,3 Heat Transfer Laboratory, Department of Mechanical Engineering, Faculty of Engineering,

Universitas Indonesia Kampus Baru – UI, Depok, 16424

*e-mail: a)[email protected]

Abstract. Heart disease is the number 1 cause of yearly deaths1 , that stays true even in the

middle of the COVID19 pandemic. COVID patients who already had early heart diseases has

higher mortality rate. From recent founding, it is known that COVID also kills making blood

clots in heart coroner like fat clotting from Myocardial Ischemia2 . ECG (Electrocardiograph)

isn’t just a device used to monitor heart disease, but the heart’s entire activity. Meaning it

could detect blood clots inside COVID patient’s heart. The question is : “Are there enough

ECG for every patients?” Accounting that big hospitals in Indonesia have ECG but with many

smaller health care centers like Puskesmas left without one. Blue ECG, is an ECG device

designed to be portable and useful with a low cost production. With its Bluetooth function

accompanied with a Smartphone app, it could be used to diagnose patients from long distances.

Keywords: ECG, Heart, Bluetooth

Investigation of Reduction of Banki Turbine Shaft Diameter to

Increase Power

Sirojuddin1, M. H. Fajar1 and R. Sukarno1

1 Mechanical Engineering, State University of Jakarta, Jakarta 13220, Indonesia


Abstract. Banki turbine is a crossflow type usually for the micro-hydropower plant. The flow

enters the first stage to the second stage of the runner through the central air space. The

purpose of this study was to investigate the reduction of the runner shaft diameter to increase

turbine power by drag force and power approach formulation. The 2D design drawings were

made using AutoCAD while 3D models using SolidWorks software. Output power at the first

stage and the second stage using drag force results at CFD simulations. The water discharge

used was 0.0333 m3/s with head 5.5 m. The initial shaft diameter was 32 mm with a total power

of 1656 W. From the results of simulation it was found that for the diameter of shaft 28 mm the

total power increase to 1698 W. The reduction of the shaft from 32 mm to 28 mm could increase

power by 2,54%.

Keywords: Banki Turbine, Drag Force, Increase Power, Shaft Diameter

Investigation of Conical Draft Tube of Kaplan Turbines Using

CFD Simulation

Sirojuddin1*, I. Ekayana1 and S. Harahap1

1 Mechanical Engineering, Universitas Negeri Jakarta, Jakarta 13220, Indonesia


Abstract. The draft tube function in Kaplan turbine is to create positive suction pressure using

kinetic energy that is not used when leaving the turbine runner and increasing turbine power

efficiency. The purpose of this research was to determine the highest efficiency in various forms

of conical draft tubes. There were 5 variants to be observed. The design geometry was made

using 2D software and 3D using Inventor and simulated in Solidworks software. The inlet water

discharge was 0.1 m³/s with head 5 m and theoritical turbine power 4.9 kW. Based on the

simulation results showed that the DT-5 variant draft tube was the best and the pressure and

power at the draft tube output has the highest value.

Keywords: Draft Tube, Efficiency, Kaplan Turbine, Kinetic Energy

Computational Fluid Dynamics and Analysis Fluid Flow with

Model Pipelines Network of Air Compressor in Power Plant

Tanjung Enim 3x10 MW

Gurruh Dwi Septano1* Risky Utama Putra1

1 Department Of Mechanical Engineering, University Of Sriwijaya, Palembang 30128, Indonesia


Abstract. Air compressors is a device that converts power in to potential energy stored in

pressurized air. The pressurized air goes through the pipeline to the dryer and stored to the air

tank. Two compressors working by shift with one compressor in stand by mode The compressor

unit 1 having a trouble with dryer system which means with basic pipeline network the

compressor 1 cannot be operating and should make modification pipeline network. In this

experiment, The computational fluid dynamics are use to analyze and comparing pressure and

flow between the basic and modification pipeline. Computational fluid dynamics are using

computer aided engineering software, for modeling and simulation software is using the

SolidWorks. Reynold numbers is used to determine flow based on diameter pipe and the volume

rate of compressor. The resulting of computer fluid dynamics are analyisis of pressure and

velocity in basic and modification pipeline network.

Keywords: compressors, pipeline network, computational fluid dynamics, pressure, flow

Design Optimization of a Kaplan Turbine Runner Blade

Sirojuddin1*, H. R. Aziz1, and S. Harahap1



Abstract. Kaplan turbines is an axial flow reaction turbine. One of the components that need

to be optimized is the thickness of the runner blade. This research aims to find the optimum

design of the runner blade thickness. Optimization was based on the value of the safety factor

caused by the momentum force of the water passage that occurred vertically to the blade.

Parameter design of width and diameter of the runner based on water discharge 0.1 m3 /sec,

head of 5 m with turbine output theoretically 4.9 kW with 3 blade design variants. The 2D

runner geometry was drawn using AutoCAD then proceed to the 3D geometry and stress

analysis using Inventor software. The simulation results shown that the RB-2 runner blade

variants were the best where the safety factor approaching the optimum point.

Keywords: Design Optimization, Kaplan Turbines, Runners, Safety Factor

Experimental Study and CFD Analysis of The Deflector Radius

Variation of Darrieus Wind Turbine

Sirojuddin1, Muhammad Haris1 and Dyah Arum Wulandari1



Abstract. An important factor affecting the efficiency of a VAWT Darrieus wind turbine is the

blade shape. Besides blade shape, the deflector also affects to increase efficiency by controlling

wind flow to one side of a positive power blade. This research aim was to find out the best

design of the deflector end radius of the darrieus wind turbine. The results were based on the

drag force and power value of the wind flow through the blade. The study was conducted

through experiment and CFD simulation software by modifying the radius of the deflector with

6 variants at 5 m/s wind speed. It was found that variant 5 with a 125 mm deflector end radius

had the highest drag force value and the maximum power.

Keywords : Blade, Darrieus, Drag Force, Deflector Radius, Wind Turbine

Effect of Guide Vane Position on the Polar Direction on the

Inflow of Water from the Spiral Case Inlet to the Runner

Sirojuddin1*, and B. C. H. Nugroho1 and S. Harahap1



Abstract. Guide vane is one of the Kaplan turbine components to control the flow of water to

the runner so that uniform flow and maximum power can be reached. This study aims to obtain

the effect of the position of the guide vane on the polar to the inflow of water from the inlet of

the spiral case to the runner so that maximum power could be obtained. The 2D geometry

design was made using AutoCAD while 3D models and simulations using Solidworks flow

simulation software. The water discharge used was 0.1 m3/s with head 5 m. The oriented

position of the guide vane variated from the angle of 0o to 25o with an increase of 5o

counterclockwise from the vertical axis. From the simulation results, it was found that the

position of guide vane rotated by 0o was the best water inflow, drag force, and power.

Keywords: Guide Vane, Inflow of Water, Kaplan Turbine, Spiral Case

Investigation Structure of Vertical Axis Darrieus Wind Turbine

Capacity 200 Watt for Alternative Electrical Source in

Remote Area

Sirojuddin 1*, I. R. Ramadhan1 and D. A. Wulandari1



Abstract. Designing wind turbines, research in the structure of the turbines is mandatory to

ensure their safety and resilience in working. This research analyzed the structure of VAWT

Darrieus with a blade with force and momentum that happened on the structure The result was

based on Safety Factor ≥ 4,0 when it holding the weight of the blades and working force. The

analysis of this structural design in the Autodesk Inventor software concludes that the most

optimum design based on their safety factor number with the stress analysis.

Keywords: Energy, Force, Safety Factor, Structure, Wind Turbine

Design Optimition the Blade Thickness of Vertical Axis Darrieus

Wind Turbine

Sirojuddin1*, H. Suharjo1 and S. Harahap1



Abstract. The design blade thickness of the Darrieus wind turbine must be optimized. This

research aims to find the optimum blade thickness so that weight and strength can be optimum.

The design is started by carrying out preliminary calculations to find the optimum dimensions

based on a wind speed of 5 m/s. The blade design is first drawn in 2D using the AutoCAD

software and then continued to make 3D and analysis of material stress is carried out in the

Autodesk Inventor software. The optimization value of the yield stress is compared with the

stress that occurs ≥ 3,0 ul (unitless). The analysis of material stress in the Autodesk Inventor

software concludes that the most optimum configuration for the safety factor is the B-3 variant.

Keywords: Blade Thickness, Darrieus Wind Turbine, Safety Factor, Stress Analysis

Design of Belt Conveyor Integrated with Robot Manipulator

Sirojuddin1, S. Sutisna1 and E. A. Syaefudin1



Abstract. A roller belt conveyor usually is driven by an electric motor that coupled to pulley

and reducers. This conveyor must be designed properly. The purpose of this study was to design

a conveyor belt to move the box that integrated with the robot manipulator by optimizing the

belt speed, width, angle, pulley diameter. Optimized by varying the structure of each conveyor

to reduce the weight of the conveyor and find the safety factor. Static analysis was performed

using FEM software with two force conditions, as when the conveyor was stopped and moves

controlled by sensor. The 2D model created using AutoCAD software. 3D geometry and stress

analysis using Solidwork software. Stress analysis was performed to find conveyor belt

components that were very vulnerable to failure.

Keywords: Belt Conveyor, Finite Element Analysis, Optimization, Pulley, Roller, Safety Factor

Design of Robot Gripper Manipulator with 1.25 Kgf Load

Capacity Using Finite Element Method

Sirojuddin1, M. I. Tamami1 and E. A. Syaefudin1



Abstract. A robot manipulator practically to assist humans to move an object vertically,

horizontally, and rotationally. This robot generally divided into 3 components, namely arm,

wrist, and gripper with servo motor drive. This study aims to design a robot manipulator

gripper and optimize the design by varying the gripper structure of a load lifter that meets the

criteria for optimizing safety factors. The 2D design was created using AutoCad while 3D and

stress analysis using Inventor software. The load of the gripper was 1.25 kgf (18.4 N). The

structure was made in two variants. From the simulation results, the best design was the GR-

2W variant which showed that the safety factor was closed to the optimum point.

Keywords: Gripper, Optimum, Robot Manipulator, Safety Factor

Optimization Design of Lightweight Robot Manipulator Arm

Capacity 1.25 Kgf Using Finite Element Method

Sirojuddin1*, M. I. A. Fatah1 and E. A. Syaefudin1



Abstract. Robot manipulator that has been proven to be cost-effective, time-saving, and

durable is very useful for efficient material handling and reducing human efforts in the

automation industry. This research aimed to design robot manipulator arms to lift the box from

one conveyor to another, then optimized by varying the structure of each arm to reduce the

self-weight of the arm and find safety factors at the optimal point. Each arm of the robot was

made of three 2D and 3D design variants. After that, a static analysis is using FEM software

with two force conditions, when the robot arm moves vertically and rotates. Based on the

simulation, the best design is the ARM-3 variant with the results showing a decrease in arm

weight 37.46 % and safety factor approaching the optimum point by comparing the yield stress

with the maximum stress that occurred according to Von Mises.

Keywords: Arm Robot, Lightweight, Optimum, Robot Manipulator

Conceptual Design of Aerosol Suction Machine to Eliminate Bio-

aerosol Generated during Dental Procedure to Prevent

COVID-19 Transmission

Reski Septiana, Raldi A. Koestoer* and Ibnu Roihan

Heat Transfer Laboratory, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Possibility of having infected people without symptoms coupled with the aerosols

generated during dental procedures make dental personnel must postpone most of their work

during this COVID19 pandemic. The aerosol suction machine can reduce bioaerosol-virus

transmission in dental settings. However, its high price and scarcity in Indonesia's market

make access to the machine a bit hard. This concept design aims to create an affordable aerosol

suction machine to solve the problem. The design used inexpensive local components equipped

with UVGI and HEPA filters to inactivate the virus. The dimensions and specifications

elaborated on this work already considered the effectiveness and availability of components in

removing aerosol generated from dental units. The ergonomic design, flexibility, and mobility

features ease dental personnel to adjust the machine's position resulting in an effective yet low-

cost machine. Hopefully, this concept design could trigger the maker's creativity to build

numerous machines to ease dental personnel's access.

Keywords: aerosol suction machine, bioaerosol, COVID-19, dental settings

Technical and Economic Analysis of Using HSD, B20 and B30

Fuels on Marine Diesel Engine at Motor Tanker and LPG

Carrier

Nuril Imansyah1, Muhammad Arif Budiyanto2 and Nandy Putra3*

1 Graduate School of Energy System Engineering, Faculty of Engineering, University of Indonesia,

Depok, Indonesia 2 Department of Mechanical Engineering, Faculty of Engineering, University of Indonesia,

Depok, Indonesia 3 Department of Mechanical Engineering, Faculty of Engineering, University of Indonesia,

Depok, Indonesia


Abstract. The increasing of government attention in renewable energy, forced ship

management split fossil fuel to mix biodiesel which is known as B20 and B30. In this paper,

technically analysis observed trend of fuel oil consumption in volume per time and also trend

of exhaust gas temperature. Economically analysis observed fuel cost considered to fuel oil

consumption trend and also price fluctuation. Data analysis shows that in general all type of

ships indicates that using biodiesel is raising up the fuel oil consumption. Furthermore,

observation to exhaust gas temperature shows that there is increasing number of temperature

when B20 and B30 applied to the engine. Economically analysis regarding to fuel oil cost in

average for all ships type shows little bit increase of fuel cost when using B20 and saving when

B30 applied.

Keywords: fuel oil, HSD, B20, B30, Marine Diesel Engine, Motor Tanker, LPG Carrier

Designing Net-Zero Waste and Energy Sustainable City:

Harmonize Human and Environment

Satryo Fadhian Shidqi1 and Arfid Gamal1

1 Department of Mechanical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111,

Indonesia


Abstract. Electrical energy needs and waste are the main problems of human life. Besides,

uncontrolled population growth and lack of environmental awareness make it more

complicated. One of the solutions is to build sustainable cities and communities to harmonize

humans and the environment. This paper discusses the ideal sustainable city and community

to give positive feedback for the environment. We optimized the use of curved solar panels,

vertical axis wind turbines, geothermal generators, and piezoelectric floors to produce

electricity. Buildings and houses are using solar control windows, liquid cooling building

system, and facing north or south to reduce the uses of air conditioners. All of the wastes are

processed and turn into electricity and furniture. With this design, we want to make sure every

action that the community does is positive for the environment and make it net-zero waste and

energy city and secure a better future for the next generation.

Keywords: Electrical energy and waste problems, sustainable city, ideal community, net-zero waste

and energy, better future

Optimization Design of the Thickness Banki Turbine Runner

Disk Profile

Sirojuddin1, M. Qais1 and R. Sukarno1



Abstract. The runner disk is one part of the runner in the Banki Turbine. In the design process,

runner disk requires design optimization regarding their thickness to get the optimum runner

design. The optimization is based on the value of the safety factor of the runner blade under

the load. The study was conducted by varying the thickness of the runner disk with sizes 8 mm,

7 mm, 6 mm, 5 mm, 4 mm, and 3 mm. The yield stress optimization value is matched with the

stress that occurs ≥ 3.0. From the results of the stress analysis test on the Autodesk Inventor

software, the safety factor with the most optimum form is the thickness variant of the 4 mm

runner disk with a safety factor of 3.36.

Keywords: Banki Turbine, Design Optimation, Runner Disk, Safety Factor, Stress Analysis

Literature Review of Building Aerodynamics Mitigation

within Indonesia’s Capital Relocation to Kalimantan

Ales Daniel1*, Panji Subhani1, Warjito1, Ridho Irwansyah1

1 Department of Mechanical Engineering, Universitas Indonesia

*email: [email protected]

Abstract. Indonesia’s capital relocation to the island of Kalimantan has led to building

developments in order to rebuild the political hub environment. The government has made a

national competition and announced foreseeable urban planning ideas that need to be

discussed through aerodynamics consideration in obtaining an effective architectural strategy.

In this paper, aerodynamic mitigation features are investigated with comparative study. In

addition, various buildings and roof shape configurations for reducing wind loads are

presented using several domains and scaled-down wind tunnel simulations. This paper is

expected to determine appropriate building types within the relocation planning by comparing

results from pressure, lift, and drag coefficients. The study shows that building construction

with several modifications improves the mitigation within Indonesia’s tropical climate.

Keywords: Relocation, Buildings, Aerodynamic Mitigation, Lift, Drag, Pressure, Configurations

Investigation of Aerodynamics of Pomfret Fish Body Applied to

Vehicle Body

Sirojuddin1 and M. H. Fajar1



Abstract. Fish naturally has a good aerodynamic shape especially for swimming in the water,

for example, pomfret fish. This research aims to find out the drag coefficient of Pomfret fish

then applied to the body of the vehicle. The vehicle body shape will be made in 3D software,

while flow simulation using CFD. Based on CFD simulation results, it was found that the drag

coefficient of the pomfret fish body was 0,124. From this result would be applied to the body

of the vehicle, then it will be simulated using the CFD application to find out the drag

coefficient. With variations in speed of 60 km/h, 70 km/h, 80 km/h, 90 km/h, 100 km/h, 110 km/h

and 120 km/h. From the simulation results, the car body drag coefficient value is 0.263.

Keywords: CFD, Drag Coefficient, Pomfret Fish, and Vehicle Drag

Pipelines Failure Prediction Modelling for Onshore Gas

Transmission Pipelines Using Machine Learning

Dea Amrializzia1*, Andy Noorsaman Sommeng1

1 Gas Management, Chemical Engineering Department, Faculty of Engineering,



Abstract. Transmission pipeline is the safest and most effective way to transport large amounts

of natural gas over long distances. Although transportation using pipelines is the safest,

transmission pipeline failures can cause damage, financial losses, and injuries. A good

preventive maintenance schedule is desired, which aims to predict break pipes proactively. In

this paper, we present a prediction model of onshore gas transmission pipeline failure using

machine learning with R software. The model presented is developed based on historical

failure that includes structured and unstructured from the onshore gas transmission pipelines

from approximately 2010-2020 released by the US Department of Transportation. The

applying process can be divided into various steps: data pre-processing, model training, model

testing, performance measuring, and failure predicting. By using machine learning, we can

conclude that it is an effective method to work with a complex dataset for predicting pipe

failures. It can provide significant improvement for the safe economic operation of pipelines.

Keywords: transmission pipeline, pipe failure, machine learning, R software, failure prediction

Study of Flywheel Effect on Banki Turbine

Sirojuddin1, A. R. Prihandono1 and R. Sukarno1



Abstract. Banki Turbine is a crossflow type turbine, usually for the micro-hydro plant. One of

the component in the turbine is flywheel. Flywheel effect is very important to stabilize the

rotation and fluctuation of power. The study aims were to determine the flywheel effect required

by the Banki turbine to stabilize its operation. Flywheel effects were the sum of WR² Pulley,

Shaft, Runner, and Generator. The discharge of water 2 m³/min, head 5,5m with 1,580 kW

brake power of turbine and 1.422 kW of generator. It was found that WR² value of flywheel

which was placed on a small pulley of generator 0.0118 kgm² and on the turbine shaft next to

runner had a value of 0.1548 kgm².

Keywords: Banki Turbine, Flywheel, Flywheel Effect, Microhydro, Runner

07Industr ialEng ineer ing


The 5th

2020

Machine Learning Predicts Corruption Probability of Regional

Heads in Indonesia

Vania Salsabila𝟏, , Muhammad Ariq Hawari𝟏,𝒃


E-mail: 𝐚 [email protected], 𝐛 [email protected]

Abstract. Corruption causes trillions of country losses and Corruption exists in all states of

government from local to central government from regent to president. To prevent and reduce

the corruption number in Indonesia, Data mining technique is used in this study to detect early

prediction of corruption crime for the regional head in Indonesia. The first step to initiate is to

collect the data set. The data set for this paper comes from various sources. This future

research uses the ID3 algorithm as one of the supervised machine learning approaches to

change large amounts of data set with many attributes to generate a decision tree model and

the rule as the result. We evaluate the performance of the classification of the preceded

algorithm by using a confusion matrix and calculate the performance. This future research

aims to analyze the decision path that will be taken of the early prediction of corrupt regional

heads and identify the corruption behavior based on the result of the algorithm which is the

decision tree. It could facilitate and help government to do surveillance upon corruption might

get early awareness toward the corruption and this could help declining even eradicating

corruption rate in Indonesia.

Keywords: Corruption, Classification, Machine Learning, Decision Tree

Simulation of Stepped Basin Offset Pour Cups on Hammer

Crusher Products to Minimize Cast Defect

Akhmad Setyawan Pratama1, Novi Devita Sari2, Nurruddin Baidowi3

Industrial Engineering Department, Faculty of Engineering, Universitas Sebelas Maret, Surakarta

57126, Indonesia

Email : [email protected]

Abstract. The pouring cup plays a role in the quality of the castings product because it receives

the liquid directly from the ladle. A problem that is often faced by the castings industry is

porosity that also occurs in making Hammer Crusher. The absence of a pouring cup in the

mold design causes obstruction of air circulation and makes it trapped inside the mold.

Through simulation, analysis can be done to fill the metal liquid into the mold including the

time of metal filling, metal fluid pressure, changes in metal temperature when the metal begins

to harden and the time of the metal compaction process itself. Castings duct system repair is

done by adding an offset pour cup stepped basin. This can increase the speed of metal flow in

the mold, accelerate the cooling process time, reduce the final temperature of metal

compaction, and minimize casting defects.

Keywords : cast cup, sand mold, hammer crusher, metal casting.

Technical and economic feasibility study of boil-off gas

reliquefaction system on LNG tanker ship

Rocky Samuel Julianto Makapuan1 , Dr. rer. nat. Ir. Yuswan Muharam, M.T.2*

1 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. Every LNG cargo being transported always produced LNG vaporization in form of

natural boil-off gas (BOG) with amount +/- 0.15% of total volume per day on laden voyage

condition and amount +/- 0.12% of total volume per day on ballast voyage condition. This

BOG are categorized as a loss from the total LNG volume that supposed to be sold to LNG

buyers. One of the way to eliminate this loss is to install onboard BOG reliquefaction.

Technical and economical feasibility study will be performed against this additional BOG

reliquefaction system on one of the existing Tangguh DFDE LNG tankers which has 154,852

m3 LNG cargo tank capacity. From the available onboard BOG reliquefaction system in the

world, three types of system which mostly utilized will be selected and simulated by means of

Unisim Design software. Afterwards, economical calculations will be performed by comparing

total investment , operational and maintenance cost, diesel fuel cost required against the total

revenue gained from BOG being reliquefied onboard that able to be sold again to LNG buyers.

The expected outcome from this paper is obtaining the economical feasibility of onboard BOG

reliquefaction system in terms of IRR, NPV, and payback period. Also to obtain sensitivity level

of LNG price / Marine Gas Oil (MGO) fuel price affecting the level of economic from these

three types of onboard BOG reliquefaction system being installed on existing LNG Tanker.

Keywords: Boil Off Gas (BOG) , BOG reliquefaction system , Liquefied Natural Gas (LNG), LNG

tanker ship, economical feasibility, sensitivity level.

Queueing Theory Approach to Improve Checkout Counter

Services in Mirota Kampus II Simanjuntak Supermarket During

COVID-19 Outbreak

Gilang Rizky Pratama1 , Yacinta Shafira Pradana2 , Jasmine Mutia Salsabila3 ,

Muhammad Farid Fadhlurrachman4*, and Maura Sekar Nurinda5

Affiliation Faculty of Engineering, Universitas Gadjah Mada, Sleman 55281, Indonesia


Abstract. The COVID-19 pandemic has forced people to focus more on their primary needs.

As the main shopping places of household primary needs, the surging demands in the

supermarkets may lead to more queues in the checkout counters. Meanwhile, the World Health

Organization (WHO) recently proposed a regulation to implement physical distancing for

dealing with the threat of COVID-19. Hence, an approach to minimize the queues in checkout

counters is needed. This paper analyzes the queueing problem in a local supermarket in

Yogyakarta and provides recommendations to improve the efficiency of the current queueing

system. A model with multiple queues and multiple-server models (𝑀/𝑀/𝑠) is built based on

the case study to estimate the utilization and waiting length parameters. The study then

concludes that by using queueing theory, supermarkets can improve the queueing system to

comply with COVID-19 health protocol while still maintaining supermarkets’ checkout

counters’ performance.

Keywords: queueing system, supermarket, checkout counter, consumer behavior, COVID-19

Identifying the Relation of Shopping Experience and Customer

Response

Fayadiva1 , Ahmad Gamal2

1 Postgraduate Student, Department of Architecture, Faculty of Engineering, Universitas Indonesia,

Depok 16424, Indonesia 2 Corresponding Author, Assistant Professor, Department of Architecture, Faculty of Engineering,



Abstract. Retail's development in Indonesia keeps changing over time. Popular brands keep

making innovation for their store design to help to promote their products and to give the best

shopping experience for their customers. This study reviewed the literature about the relation

between shopping experience and customer response. The good shopping experience will give

a positive impact on the customer response. In this study, we aim to identify which factors can

affect customer response while shopping. The results indicate that the spatial quality of the

store and product engagement increase the positive responses from the customers. These

findings will be useful for the retailer to design their stores to get the intended response from

customers.

Keywords: shopping experience, spatial quality, product engagement, customer response

Literature Review: Impact of Shopping Experience on rental

Prices Among Retail Unit in the Shopping Center

N.A. Khairunnisa1 , A. Gamal2

1 Postgraduated Student, Department of Architecture, Faculty of Engineering, Universitas Indonesia,

Depok, 16424, Indonesia 2 Corresponding Author & Assistant Professor, Department of Architecture, Faculty of Engineering,


*E-mail: [email protected], [email protected]

Abstract. The creation of a shopping experience gives a pleasant impression on visitors and

act as an attraction in a shopping center. An impressive shopping experience makes shopping

more enjoyable as it helps visitors to easily find the stores and products they are looking for.

Literature review of the creation of shopping experiences only discussed the atmosphere, the

variations in store and product, and the layout. This research discusses the impact of shopping

experience in determining rental prices. The purpose of this research is to find out the factors

that can determine the rental price of retail units in a shopping center. The results indicate that

visibility has a role in creating shopping experiences and have an impact on the rental price.

There is no study about quantification of the visibility factor in the shopping experience to

determine rental prices. Future research can consider the visibility factor in creating a

shopping experience and its quantitative value in determining the rental price. The finding of

this literature review can be useful for architects in maximizing the visibility of storefront when

designing shopping centers.

Keywords: Shopping Experience, Shopping Center, Rental Prices, Visibility

Literature Review: Spatial Configuration in Activity-based Office

and Conventional Office To User Satisfaction

Sarita Tiara1 and A. Gamal2*

1 Postgraduate Student, Department of Architecture, Faculty of Engineering, Universitas Indonesia,

Depok 16424, Indonesia 2 Corresponding Author & Assistant Professor, Department of Architecture, Faculty of Engineering,



Abstract. Workers who work in office buildings spend most of their time indoors. The design

of the office that adjusts to user satisfaction is always updated according to the era and

technology development. This study discussed factors that can affect office user satisfaction.

The method used in this research is a literature review of previous studies that discussed the

office spatial configuration and user satisfaction. The results of the study indicate that office

layout factors can affect user satisfaction in different office types. However, research that

discusses spatial configuration in user satisfaction has only been studied qualitatively. Future

studies are expected to be able to measure the value of spatial configuration in a specific and

objective manner therefore it can increase user satisfaction. The findings of this study can be

used as a guideline for office building property owners in determining spatial configuration

factors that will affect user satisfaction.

Keywords: User Satisfaction, Office Spatial Configuration, Physical Distance, Workspace

Analysis of Factors that Influence The Acceptance of Electronic

Signature Technology in Online Loan Service (P2P Lending)

Fajar Subhi, Farizal, M Dachyar

Department of Industrial Engineering, Universitas Indonesia, Depok 16424, Indonesia

Abstract. The development of financial technology has resulted in a form of innovation to

online peer-to-peer lending services (p2p lending), where one form of efforts to guarantee

agreements and transactions of online p2p lending is done securely by using digital signature

technology. This study discusses the factors that influence the acceptance of digital signature

technology in members of Indonesian P2P Lending Company Associations (AFPI). The

opinions of 5 experts were used to determine the indicators for each variable & the SEM

(Structural Equation Modeling) method was used to analyze data from the management board

of p2p lending companies where the SEM results were used to test hypotheses that had been

made previously. With this research, it is expected that the factors that influence the acceptance

of digital signature technology in peer to peer lending services can be identified thus helping

digital signature provider to develop marketing strategies based on the identified factors.

Comparative Study of Information Security Risk Management

Frameworks

Imam Baehaki1 , Yohan Suryanto2* and Ratih Mumpuni Arti3

1 Faculty of Engineering, University of Indonesia, Depok 16424, Indonesia 2 Faculty of Engineering, University of Indonesia, Depok 16424, Indonesia

3 National Cyber and Crypto Polytechnic, Bogor 16120, Indonesia

e-mail: [email protected] , [email protected] , [email protected]

Abstract. There are several types of information security risk management (ISRM) methods

as guidance in implementing a security risk program. Each way carried different goals and

methodologies depending on the needs and tastes of the organization that carried it out. If an

organization has personnel competent to implement ISRM, it will be easy to do so. However, it

will be challenging for an organization that lacks skilled staff. This study aims to design a

framework for ISRM that is simple but meets the principles of ISRM. The design is based on

the integration of four different ISRM methods. ISO 27005 represents the standard, RMF by

NIST represents guidelines, OCTAVE represents methodology, and COBIT represents

framework. The integration is fulfilled by conducting a comparative analysis by sorting and

merging based on the activity processes of ISRM. The result of this study is two designs of

ISRM, namely full design and simple design. Sorting is applied to get a simple design, and

merging is used to get a complete design.

Keywords: information security risk management, COBIT, ISO 27005, Octave Allegro, RMF NIST

Layout Optimization Using the Blocplan Algorithm to Minimize

Material Handling Costs on Track 11

Yulinda Ulfah1*, Reyhan Zikry1 and Yahya Efendi1

1 Industrial Engineering, Faculty of Industrial Technology, Universitas Islam Indonesia, Yogyakarta

55584, Indonesia


Abstract. A layout and facility design problem is found in Track 11 at a fabrication factory in

Tangerang. Therefore, an evaluation of material handling costs and re-layout of the production

facility layout are used using the BLOCPLAN (Block Layout Overview with Layout Planning)

algorithm to optimize the layout by minimizing the distance of movement between departments

and minimizing material handling costs. The use of the improved Blocplan algorithm considers

all department changes, if the change cannot reduce the layout cost then the final layout will

be displayed. After re-layouting, the total layout of the previous displacement distance is

590.8533 m (material handling costs = Rp. 500,469.52) then it decreased to 460,0369 m

(material handling costs = Rp. 383,488.35). So, it gets the efficiency of the displacement

distance and the efficiency of material handling costs are 22% and 23%. Therefore, re-layout

using the BLOCPLAN algorithm is more optimal than the initial layout.

Keywords: Re-layout, Track 11, Fabrication Factory, Material Handling Cost, BLOCPLAN Algorithm

Feasibility Analysis Development of Business for Submarine

Cable Systems Using the Open Cable System Business Model

Luthfan Aufar Akbar1 and Ajib Setyo Arifin2

1,2 Affiliation Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. The development of internet users in Indonesia is increasing rapidly. Internet users

in 2018 grow around 8% compared to 2017. On the other hand, 97% of global internet traffic

is currently carried by Submarine Cable. Surely this will be an opportunity for Submarine

Cable operators if it can be managed properly. This research investigates Batam - Manado

Submarine Cable as an alternative direct broadband link between Europe, Asia, and America

so that it has the potential to become a Global Digital Hub. Batam-Manado Submarine Cable

is still using the closed cable system business model. Whereas the submarine cable industry

currently offers an Open Cable System option that allows convergence between existing SLTEs

and SLTEs from other vendors. In this paper, research is conducted on the development of the

Open Cable System business model at Batam-Manado Submarine Cable. With the Threat

Opportunity Weakness Strength (TOWS) analysis, the results show that the Open Cable System

business is in quadrant 1. The study was also conducted by calculating the investment

feasibility analysis with three parameters, namely Net Present Value, Payback Period, and

Internal Rate Return. Calculation of investment feasibility analysis also shows that the real

condition after 3 years running is not following the calculation of an ideal first-time investment.

The ideal projection in the third year is Cumulative NPV of IDR -589,042,776,000.00, but in

reality, it is only IDR - 818,675,131,000.00 only. Calculations for the open cable system

business resulted in a positive Cumulative NPV for open cable system projections until 2026

that is touched Rp 1,343,366,667,000.00, exceeding the ideal projection of Rp

908,834,665,000,000. So that the Open Cable System business model is feasible to be

implemented in Batam-Manado Submarine Cable.

Keywords: Open Cable System, Submarine Cable, Investment Feasibility Analysis, Capital Budgeting,

Closed Cable System

Economic Analysis of CNG and LNG Retail in East Java as

Alternative Fuel of LPG for Commercial

Fadi Adli Sandika1 and Sutrasno Kartohardjono1

1 Department of Chemical Engineering Faculty of Engineering, Universitas Indonesia, Depok 16424,

Indonesia


Abstract. LPG production in Indonesia is unable to meet LPG demand. While, Indonesia’s

natural gas reserves are high enough. There are two methods of distributing natural gas,

namely CNG and LNG. The purpose of this study is to determine the role of CNG and LNG in

overcoming the problem of LPG supply limitations and obtain an economic analysis of CNG

and LNG. The method used are price calculations and then proceed with the cash flow method

using the IRR, NPV, and PoP. The results of this study are CNG and LNG have a role as an

alternative fuel of LPG. With an average CNG price of around 12,78% and LNG 17,93% lower

than LPG, they also provided benefits from Rp164.875.503 to Rp28.437.023.977. The overall

IRR of CNG obtained was 23,1% and LNG was 31%. Both NPV values are positive and PoP

CNG is 4 years and PoP LNG is 3 years

Keywords: Economic Analysis, CNG, LNG, East Java, Alternative Fuel, LPG, IRR, NPV, Payback

Period

Conceptual Framework Optimization of Time for Containers In

the Import Process

Fadel Aahmad Zaki1 and Farizal1

1 Department of Industrial Engineering, Universitas Indonesia, Depok 16424, Indonesia


Abstract. One of the most important components in the import shipping process is the accuracy

and also the efficiency of time required. Some shipments use multi-modal such as ships and

truck, airplanes and train and others. Every year the import shipping process takes place in

the Greater Jakarta area. Timeliness is the most important thing in this process. This research

focuses on the import process where the correct return of borrowed containers is one of the

important things to reduce additional costs. The choice of port locations and routes for land

travel is a matter that must be considered due to the unpredictable conditions in the

Jabodetabek area and the large number of imports entering through existing ports. Then the

optimization model is a solution to solve this problem with various solutions and the results of

this study can be used for importers for the selection of transportation modes, port locations

and cost. This paper will show framework of that optimization before modeling creation.

Keywords: Optimization of time, Modeling, Import Process, container

Risk Management in Telecommunication Project, Case Study:

Telecommunication Contractor Company in Indonesia

Anindya Julianto1 , Zulkarnain2 and Romadhani Ardi3

1 Industrial Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Industrial Engineering, Universitas Indonesia, Depok 16424, Indonesia 3 Industrial Engineering, Universitas Indonesia, Depok 16424, Indonesia

*e-mail: 1 [email protected], 2 [email protected], 3 [email protected]

Abstract. Determine the right strategy of make project planning is important based on work

agreement, the agreement was made to protect both parties in carrying out the work. The aim

of this paper is to identify risk management framework for telecommunication contractor

sector in Indonesia. Most of telecommunication companies have applied with postpone paymen

system by agreement. The process of this paper is developing the framework, evaluate, and

mitigation. This paper has been conducted from previous research related with project risk

and risk management in contractor perspective to develop initial framework. Data was

generated from previous research and sample was taken from some similar companies. The

quantitative approach which are survey and expert interview to confirm the initial framework

then validating by forum group discussion. This paper expected to find out what the risk and

reduce the highest risk level with risk mitigation. This paper proposed to practitioners for

manage the project plan by considering project risk and also for stakeholders or investor to

decide investment on this project.

Keywords: Risk Management, Project Risk, Telecommunication, Contractor perspective.

Spatiotemporal Analysis of Transport Accessibility and Economic

Benefits: A Study Case on Trans-Sumatra Toll Road

Muhammad Dimas Mahardika1 , Ridhwan Afnan Primandika1*




Abstract. Trans-Sumatera Toll Road (TSTR) is currently one of the most extensive

transportation network upgrades that Indonesia is receiving, and thus, a proper analysis of the

network through its surrounding regions over periods of time – a spatiotemporal analysis – is

important. This paper estimates improvement in accessibility index and travel time that the

network will bring, and with those data, this paper further examines what are economic

benefits that will be incurred to the road users. Afterward, the paper will compare the

performance of the road when being compared to non-toll networks in the following 10 years

of its operational phase (from 2025-2035). The analysis results show that: 1.) travel time and

accessibility index improvement is estimated at 57% and 138% respectively; 2.) TSTR will be

able to reduce the average travel costs by Rp. 1,014,062,00.; 3.) TSTR will reach its critical

accessibility and travel time benefit in the year of 2035.

Keywords: road network, travel time, accessibility index, economic benefits, spatiotemporal analysis,

Analysis On The Impact Of Covid-19 Towards The Supply Chain

Of Personal Protective Equipment In Indonesia

Firda Hanna Ismia1* , Nur Hanifah Lastianto1 , Ajeng Rahmawati1 ,

Ayra Saffanah Ihsani1



Abstract. Since the end of 2019, the Coronavirus or COVID-19 pandemic has struck all over

the world, including Indonesia. One of the sectors which are af ected by this pandemic is the

supply chain of Personal Protective Equipment (PPE). The rise of its demand requires an

enhancement in the production and distribution of those PPE. Limited resources such as raw

material, machine capacity, and workforce due to the pandemic have become the main

problem. Moreover, the lockdown in some areas restricted medical equipment shipment in

consequence of road closure and social distancing policy. The objective of this study aims to

solve Indonesia’s problem in PPE supply chain management. In this case, finding an

alternative resource, increasing production level with machine addition, along with optimizing

the production and distribution system might be the best solution.

Keywords: COVID-19, Supply Chain management, Personal Protective Equipment

Optimization of the Project Selection Process using Analytic

Hierarchy Process Method: A Study of Application of Project

Portfolio Management in PT. X

Ario Cahya Gemilang1* , Mohammad Ichsan2 , and Leni Sagita Riantini3

1 Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia 2 Binus Business School, Binus University, South Jakarta 12120, Indonesia


Abstract. Indonesia has become the largest automotive market in Southeast Asia. The size of

the market causes intense competition in the industry. PT. X has an outlet development project

that is awarded to the project selection winner. The project selection process takes place by

the method of direct appointment with the decision from directors. This causes the selection

process not to be structured and measured. As a result, there are several projects that do not

run as targeted or do not provide maximum company benefits. By using the AHP method and

the application of project portfolio management, the optimization of the project selection

process can be structured and the measurable manner in accordance with the AHP scheme.

The Hierarchy Model is formed for decision making so as to produce project winners who can

operate optimally. This method can evaluate all companies that have been appointed as

winners of previous projects.

Keywords: Analytic Hierarchy Process, Optimization, Project Portofolio Management, Project

Selection

Evaluation of Customer Satisfaction on Health and Nutrition

Products with Sentiment Analysis Using Comparison of Support

Vector Machine Algorithm and Decision Tree

Abdu Rahman Putra1* and Zulkarnain2

1 Affiliation Industrial Engineering Department, Universitas Indonesia, Depok 16424, Indonesia 2 Affiliation Industrial Engineering Department, Universitas Indonesia, Depok 16424, Indonesia


Abstract. The more product competition, the more factors that determine customers to buy a

product. All these factors are very influential in determining customer satisfaction with a

product. The rapid development of social media, more and more people write their opinions

about something. Therefore, this encourages research to use social media as a source of data

to be analyzed in the form of sentiment analysis which is a process of understanding, extracting

and processing textual data automatically to obtain sentiment information contained in

sentences of opinion. This study focuses on the problem of how to compare the Decision Tree

classification method and the Vector Algorithm (SVM) engine in determining customer

satisfaction evaluations of health and nutrition products using Sentiment Analysis. It is hoped

that further research can compare more methods then the classification can be expanded not

only in the health and nutrition sector, but also in other health fields for which comparison can

be given.

Keywords: Customer satisfaction, Sentiment Analysis, Support Vector Machine, Decision Tree

HVAC sector in an Industry 4.0 Environment: Challenges and

Opportunities

S. Bharath Sai

Senior Engineer-Electrical, Trane Technologies. Bangalore, India


Abstract. HVAC (heating, ventilating and air conditioning) systems are used for maintaining

controlled indoor ambient characteristics in optimal manner with regards to outdoor ambient

characteristics. About half of the energy usage in buildings is due to HVAC systems. During

the Fourth Industrial Revolution (4IR), a number of technologies will see major advances that

will affect all disciplines, economies and industries. These technologies include robotics,

artificial intelligence, nanotechnology, quantum computing, biotechnology, the Internet of

Things, 3D printing, autonomous vehicles, and more. This paper reviews the literature

available on the 4IR technologies and their current status. Further, the challenges and

opportunities presented by 4IR to HVAC sector are discussed.

Keywords: Emerging technologies, Fourth Industrial Revolution (4IR), HVAC sector

Location Selection for Relocation Bank Branch Office

Saleha Yuli Estiani1, And Farizal2

Department of Industrial Engineering, Universitas Indonesia, Depok 16424, Indonesia 1 e-mail: [email protected], 2 e-mail: [email protected],

Abstract. Location is very important factor for sustainability for a business. Location selection

to run business activity must be doing with some consideration. The aim of this research is to

selecting location for relocation and purchased the assets of the building for bank branch

office. This research is using AHP method to determine weighting value of each criteria and

alternatives. The value then used as decision matrix to make a decision selection using TOPSIS

method. Based on the results of the study, the alternative priority chosen from the ranking using

TOPSIS method is BPD with a value of 0,974975. The factor that has the highest weighting for

location selection criteria in relocation and purchased assets of the building for bank branch

office is Business Aspect (0,45115) with the highest sub-criteria weight is Office Location

(0,63219).

Keywords: bank, location selection, AHP, TOPSIS


The 5th

2020

abst-iesc.ui.ac.id/files/abstract-book.pdf · 1 master student, department of architecture, faculty...

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