A-ele-spe-800-30021-0

Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

Revision History Revision

Changes

A

Issued for Review & Comments

0

Issued for Design

This revision checked and signed off by: Name

Function or Job Title

Nassim Benmessaoud

Electrical Engineer

Rajaram Kahandal

Senior Electrical Engineer

Madhav Deshpande

Lead Electrical Engineer

Mohammad Siddiquie

Project Engineering Manager

Holds Hold No.

Location

Description

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

Content REVISION HISTORY

2

CONTENT

3

1

ABBREVIATIONS

4

2

INTRODUCTION

5

2.1 2.2 2.3 2.4

5 5 5 6

3

Project Description Purpose of the Document Order of Precedence Definitions

CODES AND STANDARDS

7

3.1 3.2 3.3 3.4

7 7 7 8

General Algerian Government Requirements Project Documents International Codes and Standards

4

SITE CONDITIONS

12

5

SCOPE OF SUPPLY

13

5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 5.13 5.14 5.15

13 13 13 13 15 15 15 16 17 18 18 20 21 21 22

6

Supplier Proposals and Exceptions Conflicts General requirements Modular Substation Substation Layout Clearances Cable Entry Lighting and Small Power requirement Wiring and Cabling Earthing Protection HVAC System Fire Detection, Fighting and Safety Equipment Operator provided items Warning labels Painting

TEST, DELIVERY AND INSTALLATION

23

6.1 6.2 6.3 6.4 6.5

23 24 25 25 26

Testing Transportation Lifting Installation Special Tools and Test Equipment

7

SPARES

27

8

QUALITY ASSURANCE

28

9

DOCUMENTATION

29

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

1

ABBREVIATIONS

API

American Petroleum Institute

ATEX

Directive for the supply and use of equipment in potentially explosive atmospheres (Atmosphere Explosive)

HVAC

Heating, Ventilation and Air Conditioning

ICSS

Integrated Control and Safety System

IEC

International Electrotechnical Commission

IEEE

Institute of Electrical and Electronics Engineers

IP

Ingress Protection

ISO

International Organization for Standardization

PMS

Power Management System

SLL

Chartered Institute of Building Services Engineers

UPS

Uninterruptible Power Supply

HSSD

High Sensitive Smoke Detection

GTG

Gas Turbine Generator

UCP

Unit Control Panel

GCP

Generator Control Panel

LV

Low Voltage

HV

High Voltage

PGB

Power Generation Building

MCC

Motor Control Centre

ERSV

Etablissement de Réalisation de Systèmes de Vidéosurveillance

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

2

INTRODUCTION

2.1

Project Description Groupement ISARÈNE (the “COMPANY”) will develop the Ain Tsila gas field which is located in the Illizi basin in the eastern part of the Sahara Desert in south-east Algeria, south of the Grand Erg Oriental. The field was discovered within the Périmètre Isarène (Blocks 228, 229a) in 2007 and has been appraised to hold approximately 65 billion cubic metres (2.29 trillion cubic feet) of recoverable hydrocarbon reserves. The field lies in the Sahara Desert, approximately 1,100km south-east of Algiers, 175km west of In Amenas, 175km north- west of Illizi and 450km to the south-east of Hassi Messaoud. Central Processing Facility (CPF) is designed to produce 10.3 MMSCMD sales gas. A gathering system, comprising wellsites, wellsite systems, flowlines, manifold stations and trunk pipelines to gather the produced fluids and transport them to the reception facilities at the CPF. Raw gas will be treated in the CPF. Processing facilities comprising pipeline reception facilities, slugcatcher(s), feed gas compression, mercury removal, gas dehydration, gas conditioning (natural gas liquids extraction), export compression, condensate stripper, LPG fractionation facilities, condensate and LPG export facilities and associated utilities, storage and buildings (all located at the CPF). Fiscal metering for sales gas, LPG and condensate, located at the CPF battery limit. Sales quality gas will be delivered to SONATRACH TRC’s (TRC) sales gas pipeline system at a tie-in point on a manifold next to the TFT compressor station. Liquefied petroleum gas (LPG) will be delivered to TRC’s LPG pipeline system at a tie-in point located at a block valve station west of the TFT compressor station. Stabilised condensate will be delivered to TRC’s condensate pipeline system at a tie-in point located at Méderba, approximately 165km north of Ain Tsila.

2.2

Purpose of the Document This specification defines the minimum basic requirements for the design, manufacture, testing and supply of Modular Substation for the EPC for Ain Tsila Development Project –located in Algeria. Compliance with this specification shall not relieve the supplier of the responsibility to furnish equipment and accessories of a proper electrical, civil/structural and mechanical design to meet the specified service conditions.

2.3

Order of Precedence Where Algerian regulations, codes and standards exist, their recommendations shall always take precedence. The order of Precedence for all the Technical documentation shall be as follows: •

Algerian Legislation and Regulatory Authorities Regulations

•

Project Philosophies

•

Equipment datasheets

•

Primary Equipment Specification

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

•

Other Project Specifications

•

International codes and standards

In case of conflict between any of the above then the most stringent shall apply unless a dispensation has been approved by the COMPANY.

2.4

Definitions The terms and definitions as used within this document are listed below: “COMPANY”

means Groupement ISARÈNE (the operator of the Ain Tsila development)

“CONTRACTOR”

means the party, which carries out all or part of the design, engineering, installation and commissioning, procurement and construction applicable to this specification

“shall” or “must”

indicates that the specified action is mandatory (i.e. must be done by the specified action party)

“should”

indicates that the specified action is recommended but not mandatory. However, the action party will be responsible for the consequences in the event that he/she elects not to do it

“will”

indicates a commitment by others or a statement of fact

“Purchaser”

means the entity defined as such in the purchase order or contract

“Supplier”

means the entity defined as such in the purchase order or contract

“Sub-supplier”

means the entity responsible for the supply of components or services to the Seller

“Manufacturer”

means the entity responsible for the manufacture of an item ultimately supplied by the Seller to the CONTRACTOR

“Goods”

means the physical items delivered under the terms of the purchase order or contract

“Services”

means any services provided pursuant to the purchase order or contract but not incorporated in the Goods

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3

CODES AND STANDARDS

3.1

General The design, construction and supply of the Modular Substation shall be in accordance with the latest revisions of the following specifications, data sheets, codes and standards. Where national Algerian regulations, codes and standards exist, their recommendations shall always apply. Such national regulations shall therefore supplement or amend the provisions of this document. Equipment supplied shall in addition to complying with national standards, also be in compliance with the following guides and recommended standards. Codes and Standards referred here shall be of the latest revision issued at the effective date 21st Dec-2018

3.2

Algerian Government Requirements The design shall meet the requirements and regulations of the Algerian Government including all laws, decrees and ordinances.

3.3

Project Documents Project Documents consist of the following: Refer Modular substation inquiry for detailed list. DOCUMENT NUMBER

DESCRIPTION

Discipline: Electrical A-ELE-BOD-800-30001

Electrical System Basis of Design

A-ELE-PHL-800-30001

Power System Design Philosophy

A-ELE-SPE-000-00012 A-ELE-SPE-000-00015

Distribution board specification Electrical Power and Control Cables Specification

Discipline: Instrumentation A-INS-SPE-000-30016

Specification of Instrument cables

A-INS-SPE-000-30015

Specification of Fire and Gas Devices

A-INS-BDM-000-30000 A-INS-BOD-000-30000

Integrated Control & Safety System Architecture Diagram

A-INS-SPE-000-30000

Specification of General Instrumentation

Control and Instrumentation Design Basis

Discipline: Civil & Structural A-CIV-BOD-000-30001

Civil & Structural Design Basis

A-ARC-PHL-000-30000

Architectural Works Philosophy

A-CIV-SPE-000-30013

Specification for Building Materials

A-CIV-SPE-000-30007

Specification for Str Steel Fab & Erection

Discipline: HSE A-TSE-PHL-000-30000

HSE Design Philosophy

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

DOCUMENT NUMBER

DESCRIPTION

A-TSE-SPE-000-30001

Fire Suppression system Specification

A-TSE-SPE-000-30003

Human Factors Engineering Design Specification

A-TSE-SPE-000-30000

Specification for Fixed Fire Fighting & Safety Equipment

Discipline: HVAC A-HVA-BOD-000-30000

HVAC Design Basis & Specification

Discipline: Telecom A-TEL-PHL-970-30001

Telecommunications Philosophy

Discipline: Metallurgy A-MTL-SPE-000-30003

Specification for Painting

Discipline: QA/QC

3.4

A-QAC-SPE-000-00001

Specification for ARH Compliance Requirements

A-QAC-SPE-000-30007

Specification for Material Traceability requirement

A-IMT-SPE-000-30000

Equipment Labelling Specification

A-QAC-PRO-000-30006

Welding Procedure Qualification Procedure

A-QAC-PRO-000-30007

Welder Qualification Procedure

A-QAC-PRO-000-30013

Inspection & Test Control Procedure

International Codes and Standards As a minimum, equipment shall confirm on design, materials and performance in accordance with the relevant sections of the latest editions of the international codes and standards. Codes and standards used for this project shall be the latest revisions including all addenda available at the time of purchase order placement. Document Number ASTM A36/A36M ASTM A90/A90M

ASTM A653/A653M

ASTM B117 ASTM E84

Description Standard Specification for Carbon Structural Steel Standard Test Method for Weight (Mass) of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process Standard Practice for Operating Salt Spray (Fog) Apparatus Standard Test Method for Surface Burning Characteristics of Building Materials

ASCE/SEI 7-05

Minimum Design Loads for Building and Other Structures

AWS D1.1 BS 50288-7

Structural Welding Code - Steel Part :7 Sectional Specification for Instrumentation and control cables

BS 7655

Specification for insulating and sheathing materials for cables

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Document Number

Description

BS 1993

Structural use of Steelwork

BS 7430

Code of Practice for Earthing

BS 7671

Requirements Regulations

BS EN 12464-1

Light and Lighting. Lighting of Workplaces. Indoor Workplaces

BS EN 12464-2

Lighting of workplaces. Outdoor workplaces

BS EN 12665

Light and Lighting – Basic Terms and Criteria for Specifying Lighting Requirements

IEC 60079 Series

Explosive Atmospheres – Equipment – General Requirements

IEC 60227 Series

Polyvinyl Chloride Insulated Cables of Rated Voltages up to and Including 450 / 750V

IEC 60228

Conductors of Insulated Cables

IEC 60309 Series

Plugs, Socket Outlets and Couplers for Industrial Purposes

IEC 60331 Series

Tests for Electric Cables Under Fire Conditions-Circuit Integrity

IEC 60332 Series

Tests on Electric and Optical Fibre Cables Under Fire Conditions

IEC 60364 Series

Low Voltage Electrical Installations

IEC 60417 DB Snapshot

Graphical Symbols for use on Equipment – Database Snapshots

IEC 60502 Series

Power Cables with Extruded Insulation and their Accessories for Rated Voltages from 1kV to 30kV

IEC 60529

Degrees of Protection Provided by Enclosures (IP Code)

IEC 60598 Series

Luminaires

IEC 60664 Series

Insulation Coordination for Equipment within Low Voltage Systems

IEC 60724

Short-circuit temperature limits of electric cables with rated voltages of 1 kV

IEC 61000 Series

Electromagnetic Compatibility

IEC 61034 Series

Measurement of Smoke Density of Cables Burning Under Defined Conditions

IEC 61070

Compliance Test Procedures for Test Plans for Steady State Availability

IEC 61084 Series

Cable Trunking and Ducting Systems for Electrical Installations

IEC 61140

Protection against Electric Shock

IEC 61346 Series

Industrial Systems, Installations and Equipment and Industrial Products - Structuring Principles and Reference Designations

IEC 61537

Cable Management – Cable Tray Systems and Cable Ladder Systems

IEC 61869 Series

Instrument transformers

IEC 62305 Series

Protection against lightning

IEC/TS 61200 Series

Electrical Installation Guide

for

Electrical

Installations

–

IEE

Wiring

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Document Number

3.4.1

Description

IEEE Std. 142

Recommended Practice for Grounding of Industrial and Commercial Power Systems

IEEE Std. 80

Guide for Safety in A.C. Substation Grounding

ISO 12944 Series

Paints and Varnishes - Corrosion Protection of Steel Structures by Protective Paint Systems

ISO 1461

Hot Dipped Galvanised Coatings on Fabricated Iron & Steel Articles - Specifications & Test Methods

ISO 14713 Series

Zinc coatings — Guidelines and recommendations for the protection against corrosion of iron and steel in structures

ISO 9001

Quality Management Systems Requirements

ISO 9223

Corrosion of Metals and Alloys - Corrosivity of Atmospheres Classification

ISO 965 Series

ISO General Purpose Metric Screw Threads

CE Marking and Certificates All equipment, materials and components included in the delivery for installation and application in the Ain Tsila Development shall be CE certified, shall have CE marking and shall be compliant to the EC directives, such as, but not limited to: •

•

•

•

Electro Magnetic Compatibility (EMC) o

Directive 2014/30/EU Electro Magnetic Compatibility;

o

Guidelines for Electro Magnetic Compatibility;

Low Voltage o

Directive 2014/35/EU Low Voltage directive;

o

Guidelines for Safety of Low Voltage Equipment.

ATEX o

Directive 2014/34/EU concerning equipment and protective systems intended for use in potentially explosive atmospheres;

o

Guidelines on the application of Directive 2014/34/EU;

o

Corrigendum on Directive 2014/34/EU.

Machinery o

Directive 2006/42/EC Machinery Directive;

o

Guidelines on the application of Directive 2006/42;

o

Corrigendum on Directive 2006/42/EC.

Supplier shall provide the required explosion protection certificates in accordance with the 2014/34/EU Directive.

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

Supplier shall provide an EC declaration of conformity, which shall state full compliance to the EC directives and standards. The declaration shall further state the method of compliance followed, e.g.: •

Self-certification to appropriate harmonized European standards;

•

Technical file, which is approved by an accepted, notified body;

•

Type examination.

For equipment, components and systems manufactured outside European Union region; relevant IEC standards mentioned in the project specifications shall be followed and reflected in the vendor documentation. Conformance to EC directives and CE marking will not be applicable. 3.4.2

Industry Codes of Practice, Recommendations and Guides Document Number IES HB-9-10-11 SLL Handbook

Description The IES Lighting Handbook – Tenth Edition

Lighting Handbook of the Society of Light and Lighting

SLL Code for Lighting

Companion to the SLL Lighting Handbook

SLL Lighting Guide 6

The Outdoor Environment

SLL Lighting Guide 12

Emergency Lighting

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4

SITE CONDITIONS Electrical equipment shall be suitable for Site conditions detailed into Specification AENG-BOD-000-30001 -Basis of Design – Surface facilities. Operation will be in a desert environment, with frequent sandstorms with both elevated and freezing temperatures within a twenty-four (24) hour period. Power distribution equipment shall be located in positive pressure ventilated substations. Design criteria for equipment located inside Substation Electrical Room (Switchboards, Distribution Boards, UPS Panels), Instrument room and Battery Room (Cells, Automatic Isolation Breaker & System Monitoring) will be as follows: Minimum C

Maximum C

Normal operation

15

27

Abnormal operation

-5

45

N/A

55

Area – Equipment

Function short term limited performance

Note: Outdoor electrical equipment shall be designed for ambient air temperature of 45 C

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5

SCOPE OF SUPPLY

5.1

Supplier Proposals and Exceptions The Supplier shall state in his Tender that the equipment offered complies with the requirements of this Specification without exception or shall detail the exceptions against the section numbers of this Specification. The Supplier may offer alternative proposals for price or technical advantage if he wishes, but such proposals shall form a supplement to the main Tender.

5.2

Conflicts If any of the reference documents conflict and definition is not established in this Specification, then the Suppliers shall bring this to the attention of Ain Tsila Project and shall state the basis of design used.

5.3

General requirements Conceptual design, detailed design and fabrication of the Substation enclosure, including the support structure and lifting equipment. The modular buildings shall include installed lighting, socket outlets, switches, panel boards, HVAC system, fire and gas system, earthing system, cable, cable tray, doors, hardware, steps and platforms, wiring, lifting eyes and other components required for a complete unit. All material shall be new and free from defects in material and workmanship. The modular building shall be capable of accommodating the specified free issued electrical and control system equipment, which include the following: GTG UCP/GCP, Gas Insulated Switchgear, High voltage and low voltage air insulated switchgear, Motor control centers, Variable frequency drives, LV busducts, Interposing relay panels, annunciator panel, UPS systems, Batteries, Process control system equipment, and other electrical distribution and control equipment like Desks, PMS/ICSS Cabinet, Server panel, Ethernet switches, Printer etc. The modular building Manufacturer shall furnish all material, labour, equipment, testing, supervision, plant facilities, consumable supplies, and tools required for and incidental to the design, construction and testing of the building as defined in the scope of work. The building shall be designed and fabricated so that field work at the job site shall be minimized.

5.4

Modular Substation The design and fabrication of the Modular Substation as a single piece or multiple piece of equipment to meet this shipping and transportation limitation. The Supplier shall be responsible for ensuring that the package meets the shipping and transport restrictions for the entire route. If the substation is a split design, the split must be made clear. A detailed list of works to be completed on site shall be provided with relevant drawings.

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The substation unit shall be supported on concrete columns (by CONTRACTOR) and shall be of 2.1m in height. Base of the substation unit shall have 2.3m clearance above the FGL. Floor penetrations for switchgear shall be made as large as practical especially those beneath the Switchgear, LV MCC’s. The cable entry systems shall be in situ for shipment to site. Where cable entries are provided for single core cables, the design and materials used shall prevent circulation of eddy currents. The Supplier shall provide a detailed description, including drawings and technical data of the cables/busduct penetration system. Walls shall be made sufficiently rigid to allow for the support of typical wall mounted equipment. The roof shall be pitched along the width of the structure for adequate drainage, away from doors and any equipment mounted through the substation walls. The substation shall have a personnel access door at each end. The door nearest the switchgear shall be designed to permit the passage of the largest equipment item installed in the substation. All doors shall have a minimum swing of 105o and shall open outward. Each door shall be of uniform thickness free from warps, bows and shall have sufficient rigidity to maintain a positive seal when closed. Exterior door furniture shall consist of a stainless-steel handle and cylinder lock. All external doors shall be locked and keyed to master key system, unless noted otherwise. Four keys shall be provided. Interior door furniture shall consist of a panic bar assembly designed to override all locks for emergency exit from the substation. Doorknobs shall not be provided to escape doors. Each door shall be equipped with a pneumatic or hydraulic door closer, heavy duty type, surface mounted, fixed and adjusted to ensure the smooth, slow full closing of the door leaf and doorstop to lock the door in the open position. A designated entrance door shall be complete with observation window (to ascertain any fire hazard etc. in response to a fire alarm signal) and shall be blast proof where applicable. In addition to the personnel door, an equipment door of suitable size shall be provided to move the installed and future equipment. The modular building shall include all features and equipment necessary to house and protect the equipment in the site environmental conditions and provide for adequate access to support maintenance and system expansion. Air locks: The package shall be complete with an additional set of doors to form an airlock, out with each of the inner doors to preserve the positive pressure within the building. Ingress Protection (IP) Rating: The equipment provided inside the building will be minimum IP42 as defined in IEC 60529.

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Equipment within the Substation shall be labelled in accordance with Specification for Equipment numbering system. The Substation shall be fitted with 2 x 100% HVAC units with suitable dust filtration/extraction (constant temperature control) as per HVAC Design basis and Specification Doc.no A-HVA-BOD-000-30000. It shall be possible to monitor the temperature in each room remotely.

5.5

Substation Layout Refer attached layout drawings of below mentioned individual substation buildings. a) SS-800: PGB & HV/LV Distribution b) SS-300: Fluid Reception and Separation c) SS-400: Essential Services and Utilities d) SS-700: Storage and Export e) SS-500: Process Train-1 f)

SS-600: Process Train-2

g) SS-1700: Base Industriielle

5.6

Clearances The layout of substation electrical equipment shall be arranged to provide adequate access for installation, inspection, maintenance, operation and possible repairs. The clearances for main HV & LV equipment shall be as per Electrical System Basis of Design (Doc.no. A-ELE-BOD-800-30001, clause no.6.6.2) If the equipment manufacture recommends a larger clearance, this shall be followed. Vertical clearance shall be measured from the highest part of the equipment to the underside of the lowest roof beam or HVAC ducting.

5.7

Cable Entry Floor penetrations shall also be provided for electrical equipment, which are wall mounted, or which stands against the wall of the substation enclosure. In addition, spare floor penetrations of approximate size 280 mm x 120 mm shall be provided around the perimeter walls of the substation room. They shall be covered and shall be available for use when required. A high-level penetration shall be provided in Substation internal wall of approximate size L = 400 mm, H = 240 mm. Gland plates at floor level shall be used for Electrical field power and control cables entering to the Substation. Cable Transit frames for battery and instrument room shall be provided with a minimum of 30% spare entries complete with seal blocks to provide a total gas/watertight entry system in accordance with applicable IP requirements. As a minimum, transit frames shall be the same rating as the enclosure wall.

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5.8

Lighting and Small Power requirement Design criteria specified are: •

Lighting and small power shall be supplied from 400 V lighting/small power panels respectively.

•

Lighting and small power circuits shall be provided with 30mA earth fault protection.

•

30% of lighting system shall be considered as essential lighting and shall be fed from essential services EDG power.

•

Out of above 30% essential lighting, 10% lighting shall be designed as escape light fixtures and shall be equipped with self-contained back up batteries with autonomy time of 90 min. Escape light shall be fed from essential services EDG power.

•

Escape lighting shall identify building exits, access ladders, muster areas, safe refuges and escape routes with fittings located at every change of direction.

•

A portable lighting fixture complete with battery and battery charger shall be provided for each substation building.

Average Illumination levels guideline is given on API RP 540 and EN 12464 for workplaces. Performance criteria shall be as per Electrical System Basis of Design (Doc.no. A-ELE-BOD-800-30001, clause no.6.15) All substation services small power, lighting etc. shall be supplied from the substation small power & lighting boards. HVAC System shall be powered from a dedicated Distribution board. The lighting installed by the Supplier in the substation should be a mixture of normal fluorescent lighting and battery backed fluorescent lighting fixture. The Distribution boards shall comply with requirement mentioned in Distribution Board Specification (Doc.no. A-ELE-SPE-000-00012). The board shall come complete with all MCB’s or fuses installed including those for spare ways. The Supplier shall install dedicated 400V, 3P+N normal, essential lighting and small power distribution boards for each substation. These will take the form of two main types, photocell controlled for the supply of exterior lighting circuits and non-photocell controlled for the supply of interior lighting and small power. The Supplier shall also supply all ancillary components required for the operation of the boards, such as photocells, circuit breakers, contactors etc. Lighting controlled by photocell shall have an un-switched battery maintain supply which is not disconnected during daylight hours.

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5.9

Wiring and Cabling

5.9.1

Cables All Electrical cables shall be provided by the Contractor comply with Electrical Power & Control Cables Specification (Doc. no. A-ELE-SPE-800-30015). All cabling and wiring shall be continuous; splices are not permitted. Cables shall be installed in one length. Single phase lighting and small power cables shall include an integral earth conductor. All Instrumentation cables shall comply with Specification for Instrument Cables (Doc.no. A-INS-SPE-000-30016).

5.9.2

Cable Trays In general cables shall be routed on supporting steel work, i.e. heavy duty, hot dip galvanised cable ladder racks and/or cable tray and held in place with stainless steel cable straps or Nylon 12 (Heavy) Cable ties. Signal and power cables shall be adequately separated to ensure integrity and prevent any form of interference. Separate cable trays shall be provided for MV power, LV power and instrument/telecom cabling. As per API RP 552, following minimum distances shall be maintained, between the cable trays: Cable Routing

Minimum Distances

Horizontal & Vertical distance between 300mm cable tray carrying MV cables & cable tray carrying LV cables Horizontal & Vertical distance between cable carrying MV cables & cable tray carrying Instrument/Telecom cables

1000mm (Horizontal)/300 mm (Vertical)

Horizontal & Vertical distance between 300mm cable carrying 690V cables & cable tray carrying Instrument/Telecom cables Horizontal & Vertical distance between 300mm cable carrying 400V cables & cable tray carrying Instrument/Telecom cables 5.9.3

Cable Glands Glands shall be Ex‘e’/ Ex‘d’ type, double compression, dual certified nickel-plated brass, ISO metric threads, complete with all accessories including shrouds. However, entry into Exd equipment shall be via barrier glands.

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5.10

Earthing Protection The substation shall be provided with two main earth bars located at each end of the substation. These earth bars shall be connected in a ring using earthing cable of the equivalent total cross section to the bars. All equipment shall have 2 no. earthing connection in the substation, and these shall be connected either directly to the earth bars or via a local earthing ring. The earth bus bar shall be connected to the substation main earth bars at each end using earthing cable or bar. The earthing system shall be designed to incorporate the following requirements: •

Protection against indirect contact

•

Protection against the accumulation of electrostatic charge

•

Protection against lightning discharge

For the earthing system the following requirements are foreseen: •

All main metallic structures shall be utilised and configured as main earth loop facilities

•

Electrical continuity shall be ensured for the various bolted joints.

•

Small Power and Lighting circuits shall have double pole isolation

•

Earthing of suspended ceilings, raised computer floors and HVAC ducting

•

Earthing of building services pipes

•

Earthing of radio antennae

•

Earthing of HVAC ducts and equipment

•

All other equipment supplied by Supplier

The Supplier shall earth the metallic structure of the substation at two diagonal corners to the substation main earth bar. The Supplier shall use at least 70mm2 earthing cable. The earthing conductor sizes to be used for various application as per Electrical System Basis of Design (Doc.no. A-ELE-BOD-800-30001, clause no.6.18) Note: 1) Single earthing connection will be provided to the motors/ equipment having single earthing stud as per manufacturer’s standard. 2) Instrument equipment, enclosures and cables shall be earthed in accordance with Instrument Earthing Philosophy.

5.11

HVAC System The substation Supplier shall be responsible for the design and supply of all HVAC system equipment in accordance with HVAC Design Basis and Specification Doc.No. A-HVA-BOD-30000.

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The Substation building shall be provided with 2x100% package HVAC System utilising R134 a to maintain the building positive pressure in order to prevent ingress of potentially flammable gases and to maintain the internal design condition as per referred HVAC Design Basis and Specification. Package air conditioning shall have pre-filter and final filter. The ventilation system for the battery room shall have 2x100% exhaust fans suitable for Zone-1, IIC, T3. The ventilation system shall be designed to provide adequate air changes and cooling to limit internal air temperature as specified in the HVAC Design basis and Specification referred above. Humidifiers and heaters shall be provided as required to maintain the inside design condition. The fresh air intake (drawn from safe area) shall be provided with sand trap louver with filter, gas detection and fire and gas damper. The Supplier shall ensure all ventilation incorporates enough filtering to prevent the ingress of sand and dust into the substation. The ventilation of the battery room shall extract air from the higher part of the room and shall always provide enough air changes to keep the hydrogen concentration below 25% of the Lower Flammable Limit (LFL). Continuous ventilation at an appropriate rate of changes per hour should be provided for the battery room/cabinet associated with the 110V DC tripping and closing system. The ventilation should be enough to ensure no hazardous build-up of battery gases within the room/cabinet or substation package. Air into the battery room shall be once through and will not pass into other rooms. Battery chargers shall be interlocked with supply fan, battery room shut-off dampers and battery room extract fan such that boost charging of batteries shall not take place without a functioning extract system. The extract system shall continue to operate upon hydrogen detection in either battery room, whilst boost charging shall be inhibited. The HVAC system filters shall be located so that they can be readily inspected, cleaned or replaced with the minimum use of special tools or equipment. The substation building complete HVAC System power supply shall fed from normal and essential power distribution board to ensure that during a power outage, the substation building complete HVAC system will be kept running by the essential services diesel generator. Heating and ventilation design calculations and all design documents shall be prepared as per the HVAC Design basis and specification referred above and submitted for Operator engineers review and approval before fabrication begins. Based on the QRA report, in case of any blast rated building design, all external wall duct penetrations, shall be provided with blast resistant dampers meeting the blast overpressure requirements specified. Earthing of HVAC ducts to be followed as per Electrical Earthing installation drawing. The complete HVAC system shall be monitored and controlled from a dedicated DDC HVAC Control panel. All fire dampers, fire and smoke dampers shall be controlled by HVAC control panel.

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

Three gas detectors at the inlet to the HVAC shall be provided to detect any hazardous gas drawn into the substation from outside. The gas detectors shall be wired to a Junction box supplied by building supplier. These gas detectors from the Junction box to Plant F&G system cabinet shall be wired by CONTRACTOR. Upon confirmed detection of flammable gas and confirmed fire detection, the Plant F&G system/FACP shall provide command to HVAC Control Panel to close the certified gas tight inlet damper and set the HVAC to shutdown mode. Following signals of each HVAC unit shall be communicated from the HVAC control panel to ICSS through hardwired signal.

5.12

•

HVAC System Running

•

HVAC Common Fault

•

HVAC Shutdown

•

HVAC Common alarm

Fire Detection, Fighting and Safety Equipment Seller shall refer to the HSE Design Philosophy document (Doc.no: A-TSE-PHL-00030000) for the Firefighting equipment, fire detection, alarm requirements, safety signs and eye wash bottle requirements etc., in substations. Cabling for the smoke detection system shall be of appropriate construction for the service and coloured to distinguish them from other cables. All fire detection system cabling shall be segregated from all other cabling according to the appropriate regulations. Eyewash bottles (minimum two nos. at each battery room) shall be mounted on the substation wall located near batteries or equipment containing batterie. As a minimum a battery backed emergency exit light shall be provided above each exit from the substation. CO2 and FM200 Fire extinguishing system shall be provided in Substations in accordance with Specification for Fire Suppression System (Doc. No: A-TSE-SPE-00030001). Modular Substation with fire detection and alarm systems shall be provided with an addressable type fire alarm panel (FAP). The addressable FAP shall raise local alarms and execute CO2/ FM200 total flooding system release as per ‘Specification for Fire Suppression System’. For substations all Fire, Smoke & Heat detectors shall be connected to the Building Fire Alarm Control Panel provided by Package substation supplier and executive actions such as building & plant alarms, HVAC shutdown, etc. shall be initiated by outputs from the respective building F & G control panel. Each transformer bay shall be provided with Linear Heat Detection cable these heat detectors shall be wired to the building Fire alarm panel.

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

Supplier shall comply with firefighting and safety equipment specification for Fire extinguisher, eye wash stations/bottles, fire blankets, first aid kits, safety signage, Electrical safety kit, stretcher. Supplier shall comply the requirement of Specification for Fire Suppression System (Doc no: A-TSE-SPE-000-30001) for FM200 and CO2 system.

5.13

Operator provided items ERSV provided items shall be made available at site for the installation. The Supplier shall provide the support provision for the installation and all necessary interface cabling within the substation for ERSV provided items. A CCTV camera, PAGA speakers, telephones and associated junction box shall be provided by CONTRACTOR (and same shall be install at site) for communication between the substation and the plant wide telephone system. Supplier shall provide the support provision at a prominent position to install these CCTV camera, PAGA speakers, telephones and associated junction boxes.

5.14

Warning labels The following labels warning notices, along with internationally recognised symbols, should be provided on all doors according to the type of equipment housed, a) “Doors to be kept closed” b) “Entry for authorised personnel only” c) “Danger 230 Volts” d) “Danger 400 Volts”. e) “Danger 5,500 Volts”. f)

“Danger 11,000 Volts”.

g) “Danger 30,000 Volts”. All equipment labelling shall be as per Equipment Labelling Specification (Doc.no. AIMT-SPE-000-30000. The labels shall indicate function and, where necessary, give operating instructions. Labels shall be fixed with stainless steel screws. Fixing by adhesive is not acceptable. Safety signs shall be provided throughout the substation to provide warning or information, or to identify locations of safety, firefighting and survival equipment, etc. The sign colours, dimensions, shape and symbols shall be according to international standards. All signs with descriptive text shall be in French and English languages. Refer Specification for Fixed Fire Fighting & Safety Equipment (Doc no: A-TSE-SPE000-30000). In accordance with international standards, safety signs are divided into four main categories as follows:

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

Table - Safety Signs Meaning

Shape

Prohibitive signs

Circular

Obligation (Mandatory sign)

sign Circular

Colour Red band with red cross band Blue background contrast

White

Warning sign

Triangular

Yellow background Black contrast

Emergency Information

Rectangular

Green background White contrast

All safety signs shall be illuminated by one of the following means: •

Directly or indirectly by the essential lighting;

•

Photoluminescence.

Safety signs shall be located in accordance with statutory requirements and good engineering practice.

5.15

Painting Surface finish and painting shall be compliant with the Specification for Painting (Doc.no. A-MTL-SPE-000-30003) and suitable for the expected environment at site. The Supplier / Vendor can suggest using his standard painting finish (if suitable for the environment specified) with the agreement of the COMPANY.

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

6

TEST, DELIVERY AND INSTALLATION

6.1

Testing Supplier shall be responsible for the testing and commissioning of the equipment in his scope of supply. Testing shall be in accordance with equipment Specifications.

6.1.1

Factory Acceptance Tests (FAT) Tests shall be performed on all equipment (supplied by Supplier) after installation in the Substation, in accordance with the agreed Test Procedures. Equipment shall have been tested at individual manufacturing site and accompanied by full FAT documentation. Supplier shall provide sufficient power to supply all building utilities (HVAC, lighting, etc) so that these systems can be fully operated for the duration of the FAT. The power supply shall be compatible for the utilization equipment serviced (i.e. 400 volts AC, three phase, 4 wire, 50Hz) The FAT shall include, but not be limited to the following: •

Compliance to standards, specifications, and Manufacturers drawings approved by CONTRACTOR.

•

Physical and dimensional check.

•

Proving all alarm panel inputs from the room.

•

HVAC System functional tests, performance test and alarms.

•

Lighting system functional test and lux level confirmation.

•

Check equipment type and rating of components (fuses, relays, etc).

•

Verification of equipment installation and busbar connections.

•

Insulation resistance tests for HVAC motors, control panels and wiring, lighting and small power system panels.

•

Earth continuity test.

•

Functional test of ICSS to ensure correct installation and system operation.

•

FAT of FACP with detectors, HSSD shall be carried out at OEM factory with PIUL witness, before installation/integration at yard. Vendor shall include this in the ITP for CONTRACTOR approval. Followed by FAT at yard and SAT at site.

•

Interface test between ICSS F&G cabinet and FACP shall be carried out at Modular substation yard. Interconnecting cable shall be free issued to the yard by CONTRACTOR. Cable laying, termination shall be by modular substation vendor.

•

Interface functional test between FACP and HVAC / HSSD / Fire Suppression System (FM200/C02) / ACS at yard.

•

Interface functional test between free issued ICSS PCS & F&G panels and HVAC at yard. Interconnecting cable shall be free issued to the yard by

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

CONTRACTOR. Cable laying, termination shall be by modular substation vendor. After testing and acceptance by CONTRACTOR/COMPANY, the unit shall be partially disassembled (as required), for transportation to the site. Prior to shipment, a final inspection shall be made by CONTRACTOR/COMPANY to ensure that all equipment, tags, etc are as specified. 6.1.2

Test certificates and Test Reports The Supplier shall conduct test and inspections necessary to determine that equipment and wiring is installed in accordance with the individual specifications and is in satisfactory condition to be energized. A functional test shall be performed to ensure proper operation of all devices and components. Type test certificates shall be submitted for all Supplier supplied equipment for the Building sub-systems (HVAC equipment, fire suppression system, lighting and small power system etc.) in accordance with the associated equipment specifications. Certified test reports shall be provided giving details of test performed and results achieved. Test certificates are to include values of results of test and results for any witnessed tests shall be available for signature on the day of testing. Free issued equipment shall be installed and tested before shipping to site.

6.2

Transportation The enclosure should be fabricated and fitted out as a complete enclosure and if necessary, the Supplier shall give consideration to the need to ship the enclosure in sections in order to facilitate transportation. Where shipping splits are required, the number of sections should be kept to the minimum possible and the Supplier shall take into consideration the need to minimise electrical cross connections between sections. Enclosures shall preferably be split into transportable sections across the width of the enclosure. Care should be taken to ensure that in-housed equipment is not disturbed or damaged in any way. Supplier shall include for temporary walls and other arrangements as appropriate to provide complete weather protection and to protect the materials, equipment and component parts against corrosion, dampness, breakage or vibration damage during transportation and handling and for prolonged storage in a humid, high temperature environment. If the enclosure is shipped in two or more sections, junction boxes shall be provided at the interface between the sections for enclosure lighting only. The dc power, CT and instrumentation/relaying control cable shall be connected by coiled cable connected at site, not through an interface junction box.

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

Supplier shall be responsible for shipping the package from their factory to the site installation location and for building into their design whatever shipping limitations, enclosure breakdown and protection that may be necessary. Electrical equipment to be installed in substations by others shall be transported separately. Any applicable weight limitations will be advised later. Shipped loose items shall be clearly marked and identified in documentation, installation procedures and shipping manifests. The Supplier shall provide shipping details for approval prior to shipping to site. The sections of all modules shall have enough support to withstand lifting and lashing during transit. Suitable lifting unions and lashing points shall be provided on modules. Modules shall be restrained to max 21 x 6.0 x 4.5 meters / 25 x 4.5 x 4.5 meters (Lx W x H) and supported with transportation drawings. All internal fittings shall be suitably fixed to avoid any damage during road transportation over 2000 KMS of unpaved road in Algeria.

6.3

Lifting Supplier shall advise on the locations, details and loadings of the base plates to the support structure, platforms and stairs in order to design and construct concrete foundations by others. Supplier shall provide all drawings about support structure, stairs, handrails, walls, platforms etc. for approval. The schedule of this interface information shall be agreed in advance. Supplier shall provide drawings of each housing showing centre of gravity co-ordinates and lifting point reactions and the calculated weight of finished unit(s). All purpose-made spreader beams or lifting frames, shipping steel and tools shall be the responsibility of the Supplier. Site cranage and standard slings, shackles, etc., will be available at the job site. Care shall be taken in both design and handling to ensure that electrical panels are not distorted or damaged during transport. Location of lifting points and the weight shall be clearly marked on all shipping containers.

6.4

Installation Each pre-assembly shall be completely fitted out with all equipment and internal services prior to despatch. The Supplier shall provide all documentation and procedures necessary for the installation of the substation by others. Where items are required to be dismantled for shipping, instructions shall be provided for reassembly of sections in the field. Delivery shall include all bolts, splices, etc., for joining the units together. These joining parts shall be securely packaged and clearly labelled to enable immediate installation.

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

6.5

Special Tools and Test Equipment The Supplier shall advise of the need for any special tools or test equipment required for the installation of electrical equipment. Such items must be shipped with the package.

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

7

SPARES The provision of commissioning spares is included in the scope of the CONTRACTOR. Operational spares are required in addition to commissioning spares, which shall be replaced as necessary. Spares shall be included in accordance with Specification for Spare Parts, document.

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

8

QUALITY ASSURANCE To ensure that design objectives are met, the CONTRACTOR and its major SUB CONTRACTORS shall operate an accredited quality management system in line with ISO 9001:2015 “Quality Management Systems – Requirements” or equivalent if agreed with the COMPANY and demonstrate that effective quality control procedures are in place to ensure that the requirements of this Specification, recognised codes, national and industry standards are met. The Purchaser reserves the right to conduct a quality audit at the Supplier’s/sub-supplier’s facilities at any stage during the design, manufacture, assembly, inspection and/or factory acceptance testing processes.

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Spécification for Modular Substation Document No : A-ELE-SPE-800-30021 Revision 0

9

DOCUMENTATION All installation, commissioning and operating instructions for the offered electrical equipment shall be included and indexed in the Installation, Commissioning, and Operating Manuals for the modular Substation as per the Contract, as described in the Requisition. Shipping, handling and storage documentation shall be in the English and French languages. Manuals, training documents and documents produced by equipment suppliers shall be in the English and French languages.

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