SWAMP GAS PROJECT SPEC TEMPLATE

CUSTOMER

NAOC

PLANT LOCATION

NAOC PORTHARCOURT BASE - NIGERIACode:3217.46.BARV.36906

PROJECT/UNIT

NEW PORT-HARCOURT BASE POWER GENERATION PROJECT Page 1 of 17Rev

0

CUSTOMER

NAOC

PLANT LOCATION

NAOC PORTHARCOURT BASE- NIGERIACode:3217.46.BARV.36906

PROJECT/UNIT

NEW PORT-HARCOURT BASE POWER GENERATION PROJECT Page 2 of 17Rev

0

HVAC SYSTEMS DESIGN PHILOSOPHY

CONTROL ROOM / SUBSTATION BUILDINGAT

NAOC PORT-HARCOURT BASE,NIGERIA

021/06/12 Issued for ReviewH. DordorD. AkanoR Omietimi

RevDateDescriptionPreparedCheckedApproved

CONTENTS

1. GENERAL

1.1Introduction

1.2Definition of Terms

1.3Abbreviations

1.4Codes, Standards and Reference Documentation

1.5Language

2. HVAC SYSTEMS

2.1Electrical and Control Room Air Conditioning Systems

2.2Telecom Building Air Conditioning System

2.3Battery Room Ventilation

2.4Transformer Room Ventilation

2.5HVAC Equipment Noise Levels

2.6Room Pressurisation

2.7HVAC Equipment Locations

2.8Failure Modes

2.9External Equipment Mounting

2.10Cooling Medium

2.11Condensate Drainage

2.12Refrigerants

2.13Building Thermal Properties

2.14Occupancy Gains

2.15Fresh Air Provision

2.16Equipment Gains

2.17Flare Radiation

2.18Equipment Location

2.19Earthing

2.20Works Testing

2.21Site Testing and Commissioning

2.22Maintenance and Operational Requirements

2.23Spare and Replacement Parts

3. DOCUMENTATION

3.1Contractor Supplied Documentation

3.2Vendor Supplied Documentation

3.3Design Documentation

3.4Electrical Design Data

4. VENDORS SERVICES

4.1Project Management

4.2Project Reporting

4.3Test Certifications

4.4Packing and Shipment

4.5Spare Parts and Consumable

4.6Consumables

4.7Spare Parts

4.8Training

4.9On Site Services

4.10Special Equipment

4.11Warranty

5. QA/QC REQUIREMENTS

6. VENDOR INFORMATION REQUIRED

1. GENERAL1.1 IntroductionThis Specification together with the referenced specifications, codes and standards define the minimum requirements for the design, construction, supply, testing as well as Vendor services for the provision of HVAC for the Switchgear/Control Room Building at Naoc Port-Harcourt Base.This specification details the minimum requirements for the HVAC Systems. However, this does not relieve the Vendor from his responsibilities for the design, the reliability and the safe operation of the equipment supplied.

The Vendor shall produce and submit a full design package that shall include design calculations, layout drawings, equipment schedules, equipment specifications, manufacturers cut-sheets, commissioning procedures, etc, in order to demonstrate that the systems are capable of achieving the performance and materials requirements as specified herein.

The design and installation of the HVAC shall be integrated with the design, construction, testing, hand-over, maintenance and operation of the building they serve and the other systems and equipment located therein.

1.2 Definition of TermsVendor:Main Supplier of system, package, etc.

Contractor:EPC Contractor

Client:NAOC Nigeria

1.3 AbbreviationsAHUAir Handling Unit

FATFactory Acceptance Test

HVACHeating Ventilating and Air Conditioning

M&EMechanical and Electrical

OWNERNAOC Nigeria

SATSite Acceptance Test

1.4 Codes, Standards and Reference Documentation1.4.1GeneralThe system and component items must comply with the latest issues of the relevant Codes and Standards. The Supplier shall provide a Codes and Standards compliance listing.

Compliance by the Vendor with the requirements of this specification, its attachments, Codes and Standards does not relieve the Vendor of the responsibility to provide equipment that is safe, of proper design, structurally sound, architecturally acceptable, mechanically and electrically functional as intended and as per the attached design documents.

The Vendor shall note the following hierarchy:

Nigerian National (Authorities) Standards

International Codes and Standards for buildings

The Contract

Applicable NAOC standard specifications

Compliance with Nigerian Codes and Standards is compulsory. For other cases, the governing rules are:

Most stringent to be applied

Where contradiction between standards exists, this will be resolved with the Contractor and NAOC.

The Contractor shall ensure that appropriate documentation, certificates, etc, are requested and obtained from equipment sub-vendors and sub-contractors.

The Vendors supply shall conform to the latest revisions of the codes and documents used below:

1.4.2British Standards Institute (BSI)BS 5070Engineering Diagram Practice

BS EN 60529Classification of Degrees of Protection Provided by Enclosures

1.4.3International Standards Organisation (ISO)ISO 9000Quality Management Systems and Quality Assurance Practice

ISO 9001Quality Management Systems - Requirements

ISO 9003Quality Systems Model for quality assurance

1.4.4HVAC Codes and StandardsASHRAE Handbooks

CIBSE Guides

CIBSE Commissioning Codes

Carrier Design Manual

Trane Design Manual

1.5 LanguageAll technical documents shall be in the English language.

2. HVAC SYSTEMS2.1 Substation and Control Room Air Conditioning SystemsThe Vendor shall provide complete and operable air conditioning systems to meet the design and performance criteria specified herein.

The HVAC systems shall be stand-alone packaged air-conditioning units complete with room-side direct-expansion cooling coils, filters, supply fans and controls. They shall provide cooled, dehumidified and filtered supply air to all occupied areas of the designated rooms.

The room units shall be connected to their respective air-cooled condensing units by suitably run and supported copper refrigerant pipework.

The units shall be supplied by a manufacture approved by the contractor.

In order to provide standby capacity in the event of unit failure, the HVAC System shall comprise of a minimum of four independently operable systems capable of operating simultaneously. Each system shall be rated at a minimum of 30% of the total room design duty.

For HVAC design calculations the site shall be deemed to be situated at sea level in a coastal swamp environment. All materials, surfaces, items, and components shall be suitable for a coastal swamp environment.

When operating in summer cooling mode the units shall limit the air temperature in the Electrical Room to 20C 2C when the external air temperature is at a design maximum temperature of +36C dry bulb and +28C wet bulb.

Each unit shall be provided with its own on-off switch, fan speed controller and room air temperature controller that can be manually adjusted by the room occupants.

All plant shall be capable of continuous stable operation while the external temperature is at its absolute minimum of +16C and its absolute maximum of +44C dry bulb.

There is no requirement for winter heating.

There is no requirement for humidity control other than the fortuitous dehumidification provided by the cooling coils when operating in the summer cooling mode.

2.2 Battery Room VentilationThe Battery Room shall be provided with an EExd certified extract fan capable of achieving 10 air changes per hour. Fresh air make up shall be provided by louvres located so that adequate cross-flow ventilation is achieved.

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2.3 HVAC Equipment Noise LevelsThe noise level within the Control Room shall not exceed NR45 at a distance of 1.0m from any of the HVAC system components, including supply and extract grilles when operating. The noise level within the Electrical Room shall not exceed NR65 at a distance of 1.0m from any of the HVAC system components, including supply and extract grilles when operating.

2.4 Room PressurisationBuildings located in hazardous areas should be pressurized. Provided that the buildings are located in areas of the sites designated as Non Hazardous there will be no requirement to pressurise the buildings in this respect. However, the HVAC systems shall be designed to fortuitously pressurise the Switchgear / Control Room Building in order to reduce the infiltration of unconditioned and unfiltered outside air.

2.5 HVAC Equipment LocationsThe locations of all HVAC system units, equipment, pipework, sensors, controllers, isolators, etc, shall be co-ordinated with and approved by the contractor prior to installation, to minimise obstruction around the perimeter of the building.Any air-cooled condensing units or any other HVAC plant shall be positioned such that there is adequate space for maintenance access and heat rejection airflow. The space and airflow provision shall be not less than the minimum recommended by the equipment manufacturer.

2.6 Failure ModesEach HVAC system shall be capable of operating independently of each other in the event of one system failing.

In the event of an electrical power failure the HVAC Systems shall shut down in a fail-safe mode. The systems shall automatically re-start when power is restored.

2.7 External Equipment MountingAll externally located plant items such as AHUs, fans, refrigeration plant, etc, shall be suitably fixed to prevent movement, physical damage and toppling over during high winds.

All interconnecting services and utilities shall be designed to facilitate adequate thermal or wind-induced movement of plant items without damage.

2.8 Cooling MediumThere is no suitable cooling medium available at the building from the main Site and therefore each HVAC system shall be provided with its own electrically driven mechanical refrigeration system.

2.9 Condensate DrainageCondensate drainage from the HVAC system cooling coils shall be run by gravity drain into the rainwater soakaway system local to the building served.

2.10 RefrigerantsAll refrigerants shall be commercially available and comply with the requirements of the Montreal Protocol.

2.11 Building Thermal PropertiesThe building shall be designed to limit heat gains and losses to economic levels. The HVAC Vendor shall liase with the building contractor and base the final HVAC design on the actual building construction and insulation details. For preliminary design purposes, the target thermal transmittance (U-values) of the building component shall have insulating properties as good as, or better than, the following:

External Walls= 0.35 W/m2K

Roof= 0.25 W/m2K

Floor= 0.25 W/m2K

Windows= 2.00 W/m2K

.

Windows shall be fitted with 16 mesh gauze mosquito screens in detachable frames made of a non-corrodable material.

2.12 Occupancy GainsFor HVAC design purposes the Electrical Room and the Control Room shall be deemed to be occupied by 4 people carrying out maintenance work with the doors closed.

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2.13 Fresh Air ProvisionThe HVAC systems shall have the capability of being manually adjusted to provide fresh air at a rate of up to 10 litres/second/person based on the occupancy levels given above.

As part of the detailed design process the Vendor shall determine whether there are any materials or processes within the Rooms that may require higher levels of fresh air or local extract ventilation to be provided.

2.14 Equipment GainsThe final HVAC peak design load calculations shall be based on the installed electrical equipment. For preliminary design purposes the Electrical Room shall be taken as 30kW, the Control Room as 5kW, the Battery Room as 5kW.2.15 Equipment LocationThe HVAC Vendor shall co-ordinate the location of the HVAC equipment with the Electrical Services Contractor and the contractor in order to avoid clashes and provide adequate access to all items of the Mechanical and Electrical systems including control panels, cable trays, pipework, etc. This shall include provision for the maintenance, removal and replacement of all items located inside or outside the building.

All external plant items shall be located above the design flood level of its respective Site and be provided with adequate and safe maintenance access.

2.16 EarthingAll items of the HVAC systems shall be suitably earthed and bonded in accordance with the Site standards.

2.17 Works TestingAll items of HVAC equipment shall be works tested prior to shipping to site.

2.18 Site Testing and CommissioningAll items of HVAC equipment shall be tested on site by the Vendor to demonstrate to the satisfaction of the Contractor that they have been correctly installed and are fit for purpose.

2.19 Maintenance and Operational RequirementsThe HVAC systems shall be designed to operate continuously and automatically without manual intervention for 24 hours per day, 7 days per week, 52 weeks per year with the minimum of maintenance requirements.

2.20 Spare and Replacement PartsAll system components shall be designed for ease of replacement using readily available components. The HVAC Vendor shall provide all spare parts necessary for one years continuous operation. This shall include all disposable items such as air filters.

3. DOCUMENTATION3.1 Contractor Supplied DocumentationThe Contractor will provide the following documents and information to the Vendor:

1. Site plans

2. Location plans for the building3. Hazardous Area Classification Drawings

4. Building layout drawings and details

5. All other data reasonably required by the Vendor

3.2 Vendor Supplied DocumentationThe Vendor shall prepare and supply the following technical documentation to the Contractor:

a) Bill of materials including quantity and manufacturer.

b) Schematic drawings showing all subsystems and equipment and components (with bid).

c) Functional Design Specification.

d) General arrangement drawings showing the location of all significant system equipment and components including pipework, ductwork and cable routing.

e) Power and control wiring diagrams.

f) Interface drawings, schedules and details.

g) Overall dimensional drawings and weights (shipping and installed) of each item of equipment, indicating also the requirements for equipment installation, craneage requirements, etc (with bid).

h) Equipment fixing details showing weights, shock loading, and minimum clearance to other items of equipment and wall.

i) Operating and Maintenance manuals.

j) Factory Acceptance Test Procedures (FAT).

k) Site Acceptance Test Procedures (SAT).

l) Spare parts list.

m) Electrical power consumption (with bid).

n) Delivery schedule.

The Vendor shall supply the final documentation to the Contractor with the system.

The Vendor shall provide a complete set of engineering drawings covering each part of the System.

CAD drawings shall be in AutoCAD 2007 with no reference files use. All database information shall be provided in Microsoft ACCESS format. All text documents shall be given in Microsoft WORD format.

Vendor documentation shall comply with the following requirements:

1. The dimensions, weights and measures shown in drawings and documents shall be metric units, S.I. system.

2. All the project documents shall also be supplied on CD-ROM diskettes as well as hard copies. They shall be properly numbered and labelled.

3. Electrical drawings shall be prepared using IEC symbols.

4. Ratings of all switching devices, fuses, transformers, heaters, tripping and closing coils and lamps shall be indicated on relevant documentation.

5. All documents and drawings shall be provided with legend sheets showing symbols used.

6. Documents and drawings shall be completed with the Contractor numbering label on each page filled with the numbers defined by Contractor.

7. Any charge resulting from the revision of the documents shall be born by Vendor.

All documents shall be printed in a clear and legible way. Drawings not meeting this requirement will be rejected.

3.3 Design DocumentationThe Vendor shall submit to the Contractor for review a full set of design substantiation calculations. These shall include but not be limited to the following:

a) Building cooling load calculations

b) Equipment duty calculations

c) Equipment selection calculations

d) Equipment specifications

e) Motor schedules

f) General arrangement and detail drawings

g) Power wiring diagrams

h) Control wiring diagrams

i) Controls philosophy

Computer based calculations shall be carried out using industry standard software packages such as CIBSE, Carrier, ASHRAE, HEVACOMP, etc.

All calculations (hand or computer based) shall be submitted with clearly defined and tabulated input data and output data.

In addition to being presented in terms of their total values, all output data shall be presented in terms of its major component parts. For example, heat gains shall be presented in terms of solar, fresh air, occupancy, equipment, lighting loads, etc. In addition, the total values and their component values shall each be presented in terms of W/m2 of room floor area and W/m3 of room volume.

3.4 Electrical Design DataThe HVAC Vendor shall provide the Electrical Services Vendor with all power consumption, wiring and earthing details necessary to design and install the Electrical Services to serve the HVAC equipment.

4. VENDOR'S SERVICES4.1 Project ManagementThe Vendor shall allocate a Project Manager for approval by the Contractor. After approval the Project Manager shall have the full responsibility of the Project. He will act as a focal point for any communication with the Contractor as defined in purchase conditions.

4.2 Project ReportingMajor project milestones will be agreed between Contractor and Vendor prior to P.O. The Vendor shall develop a detail project schedule, starting from the Purchase Order, showing actions and completion dates for his activities based on the above milestones. The Project Schedule shall be submitted with the bid.

Key milestones shall include:-

Purchase order date

Agreed information flow dates

Functional Design Specification

Design submission to Contractor

Design Approval

Equipment procurement and delivery

Receipt of major equipment items

FAT procedure submission

SAT Procedure submission

FAT

Delivery

Installation

Site Testing by Vendor

SAT

Hand-over

The delivery schedule shall contain detailed breakdown of the above main activities together with:

Planned Start dates

Planned End dates

Durations in weeks

Actual start dates

Forecast to complete

% Complete

Predecessors

Successors

Float

The implementation schedule shall identify the critical path and the constraints between the different activities. The Vendor shall submit planned resource histogram as well as a detailed project schedule with the bid.

A progress report shall be submitted to Contractor by the end of the last week of each month throughout the duration of the project. Joint progress review meetings shall take place once monthly.

4.3 Test CertificationsTest certificates shall be provided for all tests carried out on the systems or components in accordance with the Site Standards.

4.4 Packing and ShipmentThe Vendor shall be authorised for preparing the equipment for shipment by Contractor after agreed FAT is completed.

Vendor must pack all equipment for shipment overseas.

Spare parts shall be separately packed and identified.

Each item shall be suitably packed and crated so as to be protected from damage during shipment. Each item, crate, bag, etc., shall be identified by the complete Purchase Order number. Inventory list shall be provided

Vendor will indicate the storage conditions and transportation recommendations, which apply to his supply.

4.5 Spare Parts and ConsumableThe Vendor shall submit a list of the System spare parts duly filling in Contractor forms. Bulletins showing the offered items shall be attached to the bid. The following shall be considered.

4.6 ConsumablesThe Vendor shall provide all consumable items required for the commissioning and start-up period.

The Vendor shall clearly indicate the list of consumables provided for start-up period.

The quantities provided will be as detailed in the bid.

4.7 Spare PartsThe Vendor shall provide a list of Commissioning Spares and Three Years Operational Spares for approval by the contractor and NAOC.

4.8 TrainingThe Vendor shall identify in the bid the cost of any specialist training necessary to operate the systems or components to be supplied.

4.9 On Site ServicesOn Site Services will be covered by a separate purchase order or contract. Vendor shall provide day rates.

4.10 Special EquipmentAny special equipment or tools required for the installation, commissioning, testing, calibration or maintenance of the Systems shall be included in the Bid. Such equipment and tools shall be new and supplied with operation and maintenance manuals and instructions.

4.11 WarrantyWarranty, secrecy agreements, spare parts, expediting, shipping, patent infringements and other general requirements shall be in accordance with the Purchase Conditions.

Vendor shall guarantee that all the supplied equipment is free from faults in design, materials and workmanship. Vendor shall be fully responsible for the supplied equipment for the period stated by the Purchase Conditions.

Vendor shall modify and/or replace free of cost any hardware and software, in case any malfunction is revealed even during on line operation after taking over within the warranty period.

5. QA/QC REQUIREMENTSVendor shall implement a quality management system in line with ISO 9000 series Standard and in particular with:

ISO 9001where design work is necessary

ISO 9002in all other cases

The minimum quality assurance and quality control requirements to be implemented for the project and the Vendor quality documentation to be supplied with the bid and after award of the purchase order are defined in the attached documents.

6. VENDOR INFORMATION REQUIREDThe Vendor shall provide the following information with bid.

Detailed description of the proposed systems

System GAs with dimensions

Estimated Power consumption

Delivery schedule

The delivery schedule shall show the following as a minimum:-

Information flow from Contractor

Vendors engineering and design period

Procurement period

Assembly, testing and inspection of System at Works

FAT

Assembly, testing and inspection of System on Site

SAT

This document is the property of NAOC who will safeguard its rights according to the civil and penal provisions of the law.

25-CA-E-10324_1A.docThis document is the property of NAOC who will safeguard its rights according to the civil and penal provisions of the law.

25-CA-E-10324_1A.doc

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