om2.1plant location and lyt
TRANSCRIPT
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Plant location
Meaning-the establishment of an industryat a particular place.It is of 2 types-1.
Localization /centralization-meansconcentration of similar type ofindustries at some particular place.E.g. textile in Mumbai.
2. Delocalization /Decentralization-means spreading of similar type ofindustries at different places. E.g.banking industries.
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Factors affecting location & site decisions
1.
Availability of raw material2. Nearness to the potential market3. Near to the source of operating requirements like
electricity, disposal of waste, drainage facilities.
4. Supply of labor5. Transport & communication facilities6. Integration with other group of companies7. Suitability of land & climate
8. Availability of housing, other amenities & services9. Local building & planning regulations10. Safety requirements11. Others like low interest on loans, special grants,
living standards
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selection of the site for the factory
Known as location analysis where firstly somegeographical area is selected & from thatarea a particular site is selected for theestablishment of the plant.
Methods for the evaluation of plant location-1. Involving quantitative factors-
a. Comparative cost chart, b. dimensional
analysis.2. Comparison of qualitative factors.
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Comparative cost chart
Is appropriate where the location problemconcerns the placement of a single plant. This isbased on location cost summary chart. Acomparative chart of total costs involved in
setting up a plant of desired size is prepared.
0
10
20
30
40
locations
A
B
C
D
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The total cost is represented by the height of columnfor each location. we select a location for whichtotal cost is minimum.
The cost summary chart has advantage of clarity inpresentation. but analysis is restricted to certainspecified factors only.
Least cost centre analysis-Here transportation cost associated with variouslocation alternatives is considered.
Limitation of these techniques-
1.Choice of plant location assumed to be entirelydependent upon minimization of operational costs.
2.Operational costs are assumed to be linearly
related to distance involved.
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Dimensional analysis
It involves1. calculation of the relative merits or
cost ratios for each of the factors,
2. giving each of the cost factor anappropriate weightage by means of anindex to which the cost ratio is raised
3. & multiplying these weighted ratios inorder to arrive at a figure on therelative merits of alternative sites.
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Let Cm1,Cm2,Cm3,..Cmz are the costs associatedwith site M for various cost factors.Cn1,Cn2,Cn3,.Cnz are of site
N.W1,W2,W3,.Wz are weightage for variousfactors.
Merit of location M=(Cm1)W1*(Cm2)W2*(Cmz)Wz
Merit of location N=(Cn1)W1*(Cn2)W2*(Cnz)Wz
Relative merits of sites M & N are-
merit of M
merit of N
If this value is > 1, then select site M & vice-versa.
Advantages- it compares both subjective & objectivefactors & gives a quantitative figure.
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Comparison of qualitative factors.
These are the factors to which cost valuescant be assigned. Like lack of good schools,community attitude. These can be termed asgood or excellent.
Clearly location B appears to be better one.
factors Location A Location B
labor adequate excellent
relation good Very goodeducation Good Very good
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Ranking & weight method
1. Various locations are ranked acc. Totheir contribution
2. Various factors are assigned weights
acc. To their importance3. Weights are then multiplied with rank
assigned
4. Total of these products for eachlocation is calculated
5. Location having max. total is then
selected.
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Advantages &disadvantages of urban, rural & sub-urbansites for a plant-
urban rural Sub-urban
Bettertransportation
More water Plannedindustrial
Large labor
supply
Cheaper land Larger area
Big local market Lower taxes
Easy finance Few ordinances
Municipalservices
Better civilattitude
Labor stability
B & i t i i
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Bac war area & in ustria po icy In the facilities location problems, the industrial
policies of the governments are very important
inputs in the overall consideration. In India, theindustrial development of backward areas forbalanced regional development of the country hasalways been emphasized. This has been attempted
mainly through:1. Licensing policy (practice of leasing a legally protected property to another party )2. Location of public sector projects3. Investment subsidy (money granted by the State to keep down the price of commodities)4. Concessional finance (by IDBI, IFCI , ICICI)5. Concession on income tax import duty etc and6. Setting up of industrial estates (property
consisting of much land )
B k d & i d i l li d
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Backward area & industrial policy contd.All the districts in the country have been classified
into four categories:
A. No industry districts,B. Moderately backward districtsC. Least backward districts, andD. Non-backward districts
The A, B, and C categories are eligible for subsidy oninvestment in fixed assets in an industrial unit, asgiven below:
Category Percent Subsidy Maximum Limit Per unit
A 25 Rs 25 lakhB 15 Rs15 lakhC 10 Rs 10 lakhD not eligible for subsidy
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Global locations
World-wide locations are called global
locations.E.g. MNCs are setting up their branches in
India & Indian companies are extending their
operations in other countries like -USA, EUROPE , CHINA.
virtual proximity Social networking at a
distance .with the advances intelecommunications technology , a firm canbe in virtual proximity to its customers.
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Virtual Factory
Many firms based in USA and UKin theservice sector and in the manufacturingsectoroften outsource part of theirbusiness processes to foreign locations
such as India. Thus, instead of one'sown operations, a firm could use itsbusiness associates' operationsfacilities. In a way, the Indian BPO firmis that foreign-based company's 'virtualservice factory'. So, one's businessassociate's operations facilities is called
virtual factory.
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REASONS FOR A FOREIGN LOCATION1. Reaching the Customer -One obvious reason for
locating a facility abroad is that of capturing a share of the market
expanding worldwide.2. Other Tangible Reasons- The host country may have/offer substantial tax advantages
compared to the home country.
The costs of manufacturing and/or running operations may besubstantially less in that foreign country. This may be due to Low labor cost
Low raw material cost
Better availability of inputs
The co. may overcome the tariff (table of fixed charges) barriers bysetting up a manufacturing plant in foreign country rather than
exporting the items to that country.
3. Intangible reasons-
l
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Customer-related reasons-firms customer may feel secure that firm is mor
accessible.
Firm may be able to give a personal touch.Firm may understand customers requirements better.
It may discover other potential customers in abroad.
Organizational learning related reasonsFirm can learn advanced technologyFirm can learn from its customers abroad
It can also learn from its competitors operatin
in abroad.It may also learn from its suppliers abroad.
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Plant layout
Meaning-Plant layout is the physical arrangement
of industrial facilities. It involves the
allocation of space & the arrangementof equipment in such a manner thatoverall operating costs are minimized.
D D
D D
G G
G G
G G
M M
M M
M M
A A
A A
L
L L
L L
L L
L
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Objectives of plant layout
An efficient layout can beinstrumental in the accomplishment ofthe following objectives-
1. Economies in materials, facilitatemanufacturing process & handling ofsemi-finished & finished goods.
2. Proper & efficient utilization of
available floor space.3. To avoid congestion & bottlenecks.4. Provision of better supervision &
control of operations.
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Objectives of plant layout cont.
5. Careful planning to avoid frequent changes inlayout which may result in undue increase in cost ofproduction.
6. To provide adequate safety to the workers from
accidents.7. To meet the quality & capacity requirements in themost economical manner.
8. Provision of medical facilities & cafeteria at
suitable & convenient places.9. To provide efficient material handling system.10. To suggest the improvements in production
process & work methods.
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Principles of plant layout
1. Principle of integration (of 5Ms)2. Principle of minimum distance3. Principle of cubic space utilization(
both horizontal & vertical space).4. Principle of flow( must be forward no
backtracking)5. Principle of maximum flexibility6. Principle of safety, security &
satisfaction7. Principle of minimum handling.
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Types of plant layout1. Product layout
2. Process layout3. Fixed Position/ Stationary layout
Product layout- Layout that uses standardized processing
operations to achieve smooth, rapid, high-volume flow
Here machines are arranged acc. To theneeds of product & in the same sequenceas the operations are necessary formanufacture. E.g. back office of services
such as banks and insurance companies.
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Raw
materials
or customer
Finished
itemStation
2
Station
3
Station
4
Material
and/or
labor
Station
1
Material
and/or
labor
Material
and/or
labor
Material
and/or
labor
Used for Repetitive or Continuous Processing
Product Layout
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1. High rate of output2. Low unit cost
3. Labor specialization
4. Low material handling cost5. High utilization of labor and
equipment
6. Established routing and scheduling7. Short processing time
Advantages of Product Layout
D d f P d L
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1. Creates dull, repetitive jobs
2. Poorly skilled workers may not maintainequipment or quality of output
3. Fairly inflexible to changes in volume
4. Highly susceptible to shutdowns
5. Needs preventive maintenance
6.
Require large capital investment
Disadvantages of Product Layout
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1 2 3 4
5
6
78910
In
Out
Workers
A U-Shaped Production Line
P l t
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Process layout-
Layout that can handle varied processing
requirements Here all machines performing similar type of
operations are grouped together at one locationin the process layout. Thus here facilities aregrouped together acc. To their functions. E.g. alldrilling machines are located at one place knownas drilling section.
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Dept. A
Dept. B Dept. D
Dept. C
Dept. F
Dept. E
Used for Intermittent processing
Job Shop or Batch
Process Layout(functional)
Process Layout
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Work
Station 1
Work
Station 2
Work
Station 3
Product Layout(sequential)
Used for Repetitive Processing
Repetitive or Continuous
Product Layout
Ad t f P L t
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1. Can handle a variety of processing
requirements2. Machines breakdown doesnt result in
shutdown.
3. Equipment used is less costly4. Wide flexibility in production facilities.
5. Each production unit of system works
independently.6. High utilization of facilities
7. Variety makes the job interesting.
Advantages of Process Layouts
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1. In-process inventory costs can behigh
2. Challenging routing and scheduling
3. Equipment utilization rates are low4. Material handling is slow and
inefficient & is more.
5. More space is required6. Longer processing time
7. Back tracking may occur.
Disadvantages of Process Layouts
omparison o pro uct & process ayout
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omparison o pro uct & process ayoutfactors Product layout Process layout1. nature Sequence of facilities Similar aregp2gether
2. Machines utilization Not to full capacity Better utilization
3. product standardized diversified4. Processing time less more
5. Material handling less more6. inventory High WIP Low WIP7. breakdown Cant tolerate Can tolerate
8. Production centre simple complex9.flexibilty low high10. floor space Requires less more
11. investment high low
Stationary layout Layout in which the
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Stationary layout- Layout in which theproduct or project remains stationary, andworkers, materials, and equipment are moved
as needed. E.g. construction of DAMS.The product, because of its size and/orweight, remains in one location and
processes are brought to it.
Factors affecting plant layout
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Factors affecting plant layout1. Nature of product- e.g. some products need air-
conditioned plants.2. Size of output- For bulk-product/line layout For small-functional layout3. Nature of manufacturing system-
For intermittent-functional layout For continuous-product/line layout4. Localization of plant- e.g. there will be different
transportation arrangement if site is located nearrailway line.
5. Machines or equipment- e.g. heavy machines needstationary layout
6. Climatic conditions, need of light, temperaturealso affect design of layout.
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THANK U
CRAFT: COMPUTER PROGRAM TO SOLVE PROCESS
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CRAFT: COMPUTER PROGRAM TO SOLVE PROCESSLAYOUT PROBLEMS
CRAFT- Computerized Relative Allocation of Facilities Technique
A CRAFT program basically has the followingelements:
1. It reads the load summary (the number of loadscarried between pairs of departments), the costs
per unit load per unit distance for the handling ofmaterials between various pairs of departments.
2. It computes the centres of the departments and
computes the various inter-departmentaldistances.
3. On the basis of the above it computes the totalmaterial handling costs per unit period for the
layout.
4 It makes paired and/or three-way exchanges
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4. It makes paired and/or three-way exchangesbetween the different departmental locations soas to produce a valid and improved layout pattern.
The improvement is in terms of reducing the totalmaterial handling costs.
5. The computer prints out the scaled layout patternand the corresponding cost.
The ultimate aim of the CRAFT program is tominimize the material handling costs for theentire plant.
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Capacity Planning
Capacity is the upper limit or ceiling onthe load that an operating unit can handle.
The basic questions in capacity handling
are:What kind of capacity is needed?
How much is needed?
When is it needed?
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Types of Capacity
Design capacitymaximum output rate or service capacity anoperation, process, or facility is designed for
Effective capacityDesign capacity minus allowances such as personal
time, maintenance, and scrap
Actual outputrate of output actually achieved--cannot
exceed effective capacity.
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Efficiency and Utilization
Actual outputEfficiency =Effective capacity
Actual outputUtilization =
Design capacity
Both measures expressed as percentages
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Actual output = 36 units/dayEfficiency = = 90%
Effective capacity 40 units/ day
Utilization = Actual output = 36 units/day= 72%
Design capacity 50 units/day
Efficiency/Utilization Example
Design capacity = 50 trucks/dayEffective capacity = 40 trucks/day
Actual output = 36 units/day
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Objectives of capacity planning
1. To satisfy the future demand ofproducts without any shortage2. To find the optimal capacity of the
facility so that the sum of costs of
under-capacity & over- capacity is theminimum.
3. To keep the initial investment in the
facility as low as possible to achievelower break-even volume4. Investment in facility capacity are
long-term & cant be reversed easily.
D d R l
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Variations in Demand Relative to Capacity
Determinants of Effective
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Determinants of EffectiveCapacity
FacilitiesProduct and service factorsProcess factors
Human factorsOperational factorsSupply chain factors
External factors
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Steps for Capacity Planning
1. Estimate future capacity requirements2. Evaluate existing capacity
3. Identify alternatives
4. Conduct financial analysis5. Assess key qualitative issues
6. Select one alternative
7. Implement alternative chosen8. Monitor results
Strategies for Shifting Demand
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Strategies for Shifting Demandto Match Capacity
Use signage to communicatebusy days and times
Offer incentives tocustomers for usage duringnon-peak times
Take care of loyal orregular customers first
Advertise peak usage timesand benefits of non-peakuse
Charge full price for theservice--no discounts
Use sales and advertising to
increase business from current
market segments Modify the service offering to
appeal to new market
segments
Offer discounts or pricereductions
Modify hours of operation
Bring the service to the
customer
Demand Too High Demand Too LowShift Demand
Strategies for Flexing Capacity
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Strategies for Flexing apacityto Match Demand
Stretch time, labor,facilities and equipment
Cross-train employees
Hire part-timeemployees Request overtime work
from employees
Rent or share facilities Rent or share equipment Subcontract or
outsource activities
Perform maintenance
renovations
Schedule vacations
Schedule employee training
Lay off employees
Demand Too High Demand Too LowFlex Capacity
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Production planning & control
Production planning implies formulation,co-ordination & determination ofactivities in a manufacturing systemnecessary for the accomplishment ofdesired objectives
Production control is the process ofmaintaining a balance between variousactivities evolves during productionplanning providing most effective &efficient utilization of resources.
Objectives of PPC
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Objectives of PPC
1. Determining the nature & magnitude of
various input factors to manufacturedesired output.2. To co-ordinate labor, machines in the most
economic manner3. Setting targets & checking these against
performance.4. Ensuring smooth flow of material by
eliminating bottlenecks if any5. Utilization of under employed resources6. To produce desired output of right quality
& quantity at right time.
Importance of time horizon
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Importance of time horizonDepending on the time horizon, the plan is of 3 types- Long-term Planning: Strategic Planning normally more
than an years time. Medium-term Planning: Aggregate Planning up to an
years time.
Short-term Planning: Routine Planning monthly/weekly.
Dovetailing (fit together) of Plans-Shorter-range plans are always made within the framework of
the longer-range plans. Production planning as it isgenerally understood, is really the intermediate-range and
short-range plan. That is why. production planning is saidto follow from the marketing plan. The production plan isthe translation of the market demands into productionorders. The market demands have to be matched with the
production capacities
N d f D t il d Pl
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Need for Detailed Plans-
At a gross level, one must balance the gross demandinto gross level availability of resources in machine-hours or man-hours, etc. At the detailed level oneneeds to balance the requirements of individual
products with the availability of individualmachines/equipments and labor of different skillcategories.
Centralization & decentralization-
concentrate of authority (esp. administration) at asingle centre & transfer (power etc.) from central tolocal authority.
AGGREGATE PLANNING DEFINED
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AGGREGATE PLANNING DEFINED Aggregate Planning may be defined as
IntermediatePlanning which is normally done
for a period of up to one years time. Theword Aggregate symbolizes that the planningis done at the broadest level.
AGGREGATE PLANNING PROCESS1. Sales forecast for each product: the
quantities to be sold in each time period(weeks, months, or quarters) over theplanning horizon (6 -18 months)
2. Total all the individual product or serviceforecasts into one aggregate demand
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3. Transform the aggregate demand for each time periodinto production resource requirements (workers,materials, machines, etc.)
4. Develop alternative resource plans to support thecumulative aggregate demand and compute the cost foreach.
5. Select the best alternative which satisfies aggregatedemand and best meets the organizations objectives
Goals for aggregate planning-there are number of goals to be satisfied
It has to provide the overall levels of output, inventory and
backlogs Proper utilization of the plant capacity. The aggregate plan should be consistent with the companys
goals and policies regarding its employee
Make sure enough capacity available to satisfy expecteddemand
Assembly line balancing
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Assembly line balancing
The sequence of machines & equipments
arranged to produce the desired product iscalled assembly lines.
The amount produced by machine depends on
1. No. of operations performed on machine2. Time required for each operation
There can be a situation that different
machines may produce varying amount ofproduct during same period. This propertyis known as unbalanced assembly line
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Example of ALB
Clearly, assembly line is unbalanced.Alternatively if in system we arrange 3 machines of type A, 4 o
B & 6 of C, then output/hr. will
machine
Operation no. Time required to performoperation/unit
Units processed by machine in1 hr.
A 1 15 min. 60/15=4 units
B 2 20 min. 60/20=3 units
C 3 30 min. 60/30=2 units
machine No. ofmachines Operation no. Time required toperformoperation/unit
Units processed by machinin 1 hr.
A 3 1 15 min. 3*60/15=12 units
B 4 2 20 min. 4*60/20=12 units
C 6 3 30 min. 6*60/30=12 units
Such type of arrangement is called balanced
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assembly/production line.
To balance the production line by increasing the machines maynot be in the interest of organization due to increased
capital investment.So another method is to increase the working hours for
machines. E.g.
machine Operation no. Timerequiredto performoperation/unit
Time requiredfor eachmachine shift
Units processed by machine in1 hr.
A 1 15 min. 1 hr. 60/15=4 units
B 2 20 min. 1hr. 20 min. 80/20=4 units
C 3 30 min. 2 hrs 120/30=4 units
P d l d
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Production planning procedures
It can be divided in 3 parts-1. Routing
2. Scheduling
3. LoadingRouting-
It means determination of path or route
over which each piece is to travel inbeing transformed from raw-materialinto finished product.
In general routing consists of seven decisions
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In general routing consists of seven decisions,namely
1. Whether to make/buy2. The form & shape of material
3. Division of work to be done into operations
4. The choice of machines on which eachoperation should be done.
5. The sequence in which operations are to be
performed6. The division of operations into work
elements
7. The choice of special tooling.
Advantages of routing
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g g
1. Efficient use of resources
2.
Reduction in manufacturing costs3. Improvement in quantity & quality of output
4. Provides a basis for scheduling & loading.
Scheduling- it means1. A description of when & where each
operation is to be executed.
2. Establishment of timetable at which tobegin/ complete each operation.
Objectives of scheduling-
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j g1. Items are delivered on due date2. Production cost is minimum3. To minimize idle time of machines4. To prevent unbalanced allocation of time
among various departments
Types of schedules-1. Operations schedule- determine total time
required to do a piece of work with given
machine2. Master schedule- is a list showing how
many of each item to make in each periodof time in future.
S h d li d i
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Scheduling devices
1. Gantt charts- portrays plannedproduction & actual performance overa period of time. It is a rectangularchart divided by horizontal & verticallines.
2. PERT & CPM method- job is firstbroken in basic elements & network is
constructed which is then analyzed toprepare schedule.
3. The Run Out approach
P d ti it
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Productivity
ProductivityA measure of the effective use of
resources, usually expressed as the ratio ofoutput to input
Productivity =Outputs
Inputs
All Productivity measures
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y m Productivity = Number of units of output
Number of persons employed to produce that output
Productivity= no. of units producedno. of man-hours worked
Productivity= output at standard price
Amount of wages paid in order to produce that output
Capital productivity = Value Added
Capital employed
Capital Productivity= Total sales in Rupees
Depreciation of capital assets
MULTI FACTOR PRODUCTIVITY = Production at standard price
Labor + materials + overhead + k (capital invested)
where, labor, materials overhead and capital constitute all the input factors
Methods to increase productivity
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p y1. By increasing output, keeping input constant2. By decreasing inputs for same output
3. By Better utilization of resources4. By using efficient & effective methods of working5. By using good layouts6. By reducing material handling
7. By selecting new technology8. By proper maintenance9. By good working conditions to workers10. By good incentive schemes
11. By better quality of purchase12. By Training to employees13. Be customer oriented.14. Assign right people for right jobs.
15. Keep things simple
Difference between efficiency &
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yeffectiveness-
factors efficiency effectiveness
Objective: To produce quantity andquality
To enhance the value tothe customer and,therefore, to thesociety.
Goal: To improve the process
and/or the product
To determine the right
direction for theorganization and thevalue that needs lo begenerated.
Questions:Howto perform a task
(whether in production,marketing or any other
area)
Whyto perform
something and, so. whatto perform.
Satisfaction
Measure:
Is everything runningwell?"
-Are we aiming right?"
BUSINESS PROCESS REENGINEERING-B P b
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Business Process Reengineering is about revamping oroverhauling the existing processes and redesigning themfrom a clean slate, in order to achieve significant
improvements in critical measures of performance.Benchmarking-
1. Internal
2. Competitive
3. Functional
4. generic
TATA BUSINESS EXCELLENCE MODEL
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The TBEM criteria for performance excellence are built upona set of core values and concepts that are embodied inseven categories:
1. Leadership
2. Strategic Planning
3. Customer and Market Focus4. Measurement Analysis and Knowledge Management
5. Human Resource Focus
6. Process Management
7. Business Results