0397-MI20-60S1-6005-A

This document, including drawings, procedures, specifications, and its contents is the exclusive property of Company, Inc. and is furnished on a confidential basis with the express agreement that it shall neither be used, sold, transferred, copied, traced, photographed, nor reproduced in any manner whatsoever, in whole or in part, nor any item herein be sold, manufactured, or assembled without the written agreement of Company, Inc. The recipient of this document agrees not to disclose to any other party information contained herein, nor use such information, except for the specific purpose intended at the time of release of this document.

A

IDC

10 MAY 13

KP

KP

TP

Rev

Status

Date

Originator

Checker

Approver

Project

Document Title:

GENERAL ELECTRICAL CONSTRUCTION SPECIFICATION Company Project No.

0397

Document No.

0397-MI20-60S1-6005

Page

1 of 29

Petrobras FPSO Cidade de Carioca MV 28

Petrobras FPSO Cidade de Carioca MV 28

General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

TABLE OF CONTENTS 1.0 

EXECUTIVE SUMMARY .................................................................................................. 4 

2.0 

BACKGROUND ................................................................................................................ 4 

3.0 

BASIS ............................................................................................................................... 4  3.1 

3.2  4.0 

REFERENCES ...................................................................................................... 4  3.1.1 

Company ............................................................................................... 4 

3.1.2 

Client ..................................................................................................... 5 

3.1.3 

Industry Codes, Standards, Rules, Regulations .................................... 5 

DEFINITIONS ........................................................................................................ 6 

SUPPLIER RESPONSIBILITY ......................................................................................... 7  4.1 

MAINTENANCE AND PRESERVATION............................................................... 8 

4.2 

MATERIAL RECEIPT AND STORAGE ................................................................. 9 

4.3 

DRAWINGS AND SPECIFICATIONS ................................................................... 9 

5.0 

REGULATIONS ................................................................................................................ 9 

6.0 

SERVICE CONDITIONS ................................................................................................. 10 

7.0 

8.0 

9.0 

6.1 

AMBIENT TEMPERATURE ................................................................................ 10 

6.2 

ENVIRONMENTAL CONDITIONS ...................................................................... 10 

WORK UNDER SPECIAL CONDITIONS ....................................................................... 10  7.1 

MATERIAL, WORKMANSHIP, AND SUITABILITY ............................................. 11 

7.2 

AREA CLASSIFICATION .................................................................................... 12 

7.3 

DEGREES OF PROTECTION ............................................................................ 12 

ELECTRICAL SYSTEM .................................................................................................. 12  8.1 

POWER SUPPLIES ............................................................................................ 12 

8.2 

CONSUMERS ..................................................................................................... 13 

8.3 

ELECTRICAL SYSTEM VARIATIONS ................................................................ 13 

8.4 

SYSTEM NEUTRAL / EARTHING ...................................................................... 14 

EQUIPMENT INSTALLATION ....................................................................................... 14  9.1 

INSTALLATION OF ELECTRICAL EQUIPMENT ............................................... 15 

9.2 

CABLES .............................................................................................................. 16 

9.3 

CABLE GLANDS / MULTI CABLE TRANSITS.................................................... 17 

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9.4 

CABLE TERMINATIONS..................................................................................... 18 

9.5 

CABLE SUPPORT SYSTEMS ............................................................................ 18  9.5.1 

10.0 

General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

CABLE TRAY ...................................................................................... 19 

9.6 

EARTHING .......................................................................................................... 20 

9.7 

LIGHTING AND SMALL POWER........................................................................ 22  9.7.1 

PLANT LIGHTING ............................................................................... 22 

9.7.2 

Illumination Levels ............................................................................... 22 

9.8 

HEAT TRACING .................................................................................................. 23 

9.9 

TERMINAL AND JUNCTION BOXES ................................................................. 24 

ONSHORE FABRICATION ............................................................................................ 24  10.1 

CABLING ............................................................................................................. 24 

10.2 

INSPECTION, TESTING, PRECOMMISSIONING, AND COMMISSIONING ..... 25  10.2.1 

Extent of Testing and Inspection ......................................................... 25 

10.2.2 

Power Supply and Distribution............................................................. 26 

Transformer ......................................................................................................... 26  UPS and DC Systems ......................................................................................... 26  Switchgear / MCC / Distribution Panels............................................................... 26 

10.3 

10.2.3 

Utilization of Motors ............................................................................. 27 

10.2.4 

Utilization of Motor Control .................................................................. 28 

10.2.5 

Test Reports ........................................................................................ 28 

"AS-BUILT" DRAWINGS ..................................................................................... 28 

11.0 

QUALITY ASSURANCE / QUALITY CONTROL SYSTEM ........................................... 28 

12.0 

APPROVED SUBSUPPLIERS / MANUFACTURERS ................................................... 29 

TABLES No table of figures entries found.

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1.0

General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

EXECUTIVE SUMMARY This document outlines the minimum requirements for the installation and connection of topsides electrical equipment, installation material, and systems for installation onboard an FPSO.

2.0

BACKGROUND Petrobras and partners (henceforth the “Client”) are developing a deep water discovery in the concession areas at the Santos Basin, offshore Brazil. The Client invited the Schahin Group and Company International, Inc. (henceforth the “Company”) to tender FPSO specifications for a VLCC conversion scenario with a minimum storage capacity of 1,600,000 bbl of crude oil. The Client specified that the FPSO shall be spread moored in a maximum water depth of 2,126 meters. The FPSO is intended to receive production from subsea oil wells and shall have production plant facilities to process the fluids from the subsea production, stabilize the fluids, and separate produced water and natural gas. Processed liquids shall be metered, stored in the vessel cargo storage tanks, and offloaded to shuttle tankers. Produced gas shall be compressed, dehydrated, and used as a fuel gas and for lifting oil production. Surplus gas shall be exported to the Client through the Client’s gas pipeline system or reinjected into the reservoir. Produced water shall be disposed of overboard after appropriate treatment. The Process Plant shall have the following capacity:

3.0



Production and treatment of 19,200 Sm3/day of liquids (at 15.6 ºC and 101.3 kPa (a)) and up to 16,000 Sm3/d of crude oil (at 15.6 ºC and 101.3 kPa (a)) and 16,000 m³/d of produced water.



Treatment and compression of 5,000,000 Sm3/d of associated gas



Treated seawater injection capacity of 19,200 m3/d at 25,000 kPa (a).

BASIS Industry codes, standards, and practices, as well as Company experience and preferences are the basis for this document.

3.1

REFERENCES Industry codes, standards, and practices, as well as Company experience and preferences are the basis for this document. The following references apply only as specified in the body of this document. If the reference is not mentioned within, it is not applicable. Latest reference editions, including addendums, in force at contract award apply. Reference requirement conflicts shall be brought to Company attention for resolution. The most stringent requirement of the following references applies unless otherwise specified in writing by the Company.

3.1.1

Company

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Number/ Identification

Title

0397-MI20-50S1-6001

General Instrumentation Construction on Topsides Specification

0397-MI20-00DS-0010

Site Conditions and Available Utilities Datasheet

0397-MI20-00S1-0030

Painting and Corrosion Protection Specification

0397-MI20-60S1-0001

Electrical & Instrument Cable Specification

0003-MI20-00S1-0210

Equipment and Materials Preservation, Shipping and Preparation for Storage Specification

0397-MI20-60DA-0001

Electrical Installation Standard Details (to be provided during detailed engineering)

3.1.2

Client

Number / Identification NR-10

3.1.3

Title Safety for Working on Electrical Installation and Service

Industry Codes, Standards, Rules, Regulations

Number/ Identification API 505

API RP-14F

Title Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1, and Zone 2 Recommended Practice for Design and Installation of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class I, Division 1 and Division 2 Locations

IEC 60079-14

Explosive Atmospheres – Part 14: Electrical Installation Design, Selection, and Erection

IEC 60079-30

Explosive Atmospheres – Part 30: Electrical resistance trace heating

IEC 60092-350

Electrical Installations in Ships – Part 350: General construction and test methods of power, control, and instrumentation cables for shipboard and offshore applications

IEC 60092-351

Electrical Installations in Ships – Part 351: Insulating materials for shipboard and offshore units, power, control, instrumentation, telecommunication, and data cables

IEC 60092-352

Electrical Installations in Ships – Part 352: Choice and installation of electrical cables

IEC 60092-353

Electrical Installations in Ships – Part 353: Single and multicore non-radial field power cables with extruded solid insulation for rated voltages 1 kV and 3 kV

IEC 60092-354

Electrical Installations in Ships – Part 354: Single- and three-core power cables with extruded solid insulation for rated voltages 6 kV up to 30 kV

IEC 60092-359

Electrical Installations in Ships – Part 359: Sheathing material for shipboard power and telecommunication cables

IEC 60092-375

Electrical Installations in Ships – Part 375: Shipboard telecommunication cables and radio frequency cables – General Instrument, Control, and Communication Cables

IEC 60092-401

Electrical Installations in Ships – Part 401: Installation and test of completed installation

IEC 60092-502

Electrical Installations in Ships – Part 502: Tankers – Special Features

IEC 60228

Conductors of Insulated Cables

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Number/ Identification

Title

IEC 60331

Test on Electric Cables under Fire Conditions

IEC 60332-3

Test on Electric and Optical Fiber Cables under Fire Conditions

IEC 60529

Degrees of Protection Provided by Enclosures (IP Code)

NEMA VE1

Metal Cable Tray Systems

NEMA VE2

Cable Tray Installation Guidelines

ABS

ABS Steel Vessel Rule & FOI

3.2

DEFINITIONS Within the body of this specification, the following definitions shall apply:

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Term

Definition

ABS

American Bureau of Shipping

API

American Petroleum Institute

IEC

International Electrotechnical Commission

Client

Petrobras and/or its assigns.

Company

MODEC INC, MODEC International, and/or its assigns.

E&I

Electrical and Instrumentation

Execute Phase

Phase of the project including the Detailed Engineering, Procurement, Construction and Installation of the FPSO.

Facility

SUPPLIER or subcontractor shop and/or any property owned by SUPPLIER or subcontractor where any portion of the work will be performed.

FAT

Factory Acceptance Test

FPSO

Floating, Production, Storage and Offloading (vessel)

ITP

Supplier Inspection and Test Plan

ITR

Inspection and Test Requirements

PO

Purchase Order

QA/ QC

Quality Assurance/ Quality Control

SDRL

Supplier Data Requirements List The official standard SDRL template is Appendix A of the “Supplier Documentation Requirements Specification,” referenced under Section 3.1.1; however, the equipment / package-specific SDRL is sheet 02 of the Engineer’s RFQ documentation.

Services

Any service or work performed by SUPPLIER that must be performed to comply with the requisition requirements, or the contract, to procure, design, manufacture and delivery of the work.

STANDARDS

Industry Codes, Standards, Guides, and Recommended Practices referenced herein. Meaning the latest issue or edition in force at the end of SUPPLIER bid validity date or the contract date.

SUPPLIER

Any entity contracted for the supply of the equipment and/or any subcontractor thereto. In all cases SUPPLIER is responsible for performance of all Work and will be the single point of contact for all Work related issues. Company will not receive information from nor respond directly to subSuppliers.

VLCC

Very Large Crude Carrier

Work

Any material or item or service listed in the requisition or contract as being in the SUPPLIER’s Scope of Supply.

4.0

SUPPLIER RESPONSIBILITY The Supplier shall list and fully describe all deviations and/or omissions from this specification as well as the related codes. The Supplier shall not proceed with the implementation of any deviation prior to receiving the Company’s written approval. Assumptions to cover lack of information are not allowed. The Supplier is obliged to obtain reliable information from the Company or other sources.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Supplier shall conduct internal test to ensure system fully functional prior to the FAT. The Supplier shall not carry out any testing or Precommissioning of equipment or bulk items without submitting prior notification to the Company. Testing shall be carried out in accordance with the agreed ITP. The Company reserves the right to witness all testing (functional, running, static, or otherwise) including FAT tests of Sub-suppliers, Precommissioning, and Commissioning. If certification is applicable, the Supplier shall state clearly that the Work offered by him shall be acceptable to the Certifying Authority, as well as the applicable codes and standards listed in this specification. The Supplier shall provide all drawings, certificates, etc. necessary to obtain the certification. It is the Supplier’s responsibility to be knowledgeable of the requirements of any relevant Standards and Codes. Supplier's responsibility shall include, but not be limited to the following:

4.1



The furnishing of all labor, supervision, tools and test equipment required for the installation and testing of the complete electrical system as shown on the Company project documents



Refer to EPIC contract for all Company purchased items.



The equipment is to be stored in a dry, conditioned store and handled in such a manner that upon final installation all materials and equipment reflect satisfactory finish, appearance, and performance.



Furnishing of temporary electrical facilities that the Subsupplier may require for Operations under this contract



The notification to Company at least 7 days prior to performing any test for final equipment acceptance



The immediate notification to Company of any material, equipment, or system failure to pass a test.



The documentation and certification of all tests and submission of these tests to Company after each test is performed.



Preparation of shop drawings for rack and tray installation and electrical equipment support details

MAINTENANCE AND PRESERVATION The Supplier shall be responsible for maintenance and preservation of all electrical equipment. Such maintenance shall comply with any Subsupplier recommendations. The Supplier shall produce for Company approval a maintenance plan and procedure. Supplier shall refer to Company Material and Equipment Preservation, Shipping and Preparation for Storage Specification. This will apply to equipment both stored and installed. All equipment and materials required for maintenance and preservation shall be provided and installed by the Supplier.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

All electrical items like junction boxes, light fixtures, local control stations, receptacles, etc shall be properly covered using plastic wrappers before shipping.

4.2

MATERIAL RECEIPT AND STORAGE The Supplier shall be responsible for receipt of all material including any Company issued material and equipment. Switchgear, panels, battery systems, consoles, and other large items shall be properly stored. The aforementioned delicate items shall be identified and stored in temperature / humidity controlled storage areas. All electrical and instrument cable will be stored in an open quarantined storage area. Supplier shall refer to Company Material and Equipment Preservation, Shipping and Preparation for Storage Specification.

4.3

DRAWINGS AND SPECIFICATIONS All electrical installation shall be in accordance with the Company’s project Specifications and documents. The electrical plan drawings accompanying this specification are for reference only and do not indicate exact and complete routing of cable or cable ladder / racks and trays. The dimensions shown in the accompanying drawings shall be for reference only and shall not be used for installation purpose. Exact locations are to be defined in the field when no dimensions are given and shall meet the Company’s requirements. Installation drawings for construction prepared by, or issued to the Supplier should be the most up-to-date issue; however, it shall be Supplier’s responsibility to ensure he is using the latest revisions of all documents and drawings. The Supplier shall check all documents for any error, discrepancy, omission, or conflict in the installation drawings, specifications, and physical conditions on the site. In case of any conflict, Supplier is required to clarify with Company before installation. Supplier shall mark-up one set of drawings indicating as-built conditions during fabrication / construction. During the project, the Supplier shall keep an up to date record of all changes in the electrical installation and indicate these changes on the relevant drawings. The Company shall have access to these documents all the time. The Supplier shall produce all detail drawings required for any specific installation and the drawings shall send to Company for approval. The Supplier shall also carry out an interference check with other disciplines on both design and detail drawings. As-built drawings shall be available within one month of acceptance of the project and shall cover all parts of the electrical installation.

5.0

REGULATIONS Sections within this document summarize major requirements. Some requirements may not apply to Supplier Work. Such exceptions must be approved in writing by the Company. Any conflict between the requirements of this specification and the related codes, standards, data sheets, requisition, etc. shall be referred to the Company. Electrical systems are designed to comply with all requirements in the Company project documents and drawings. In general, the electrical system design and the electrical

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

equipment shall comply with the publications issued by the International Electro-technical Commission (IEC). In the event of conflict, supplier shall get Company approval before proceeding with work.

6.0

SERVICE CONDITIONS Unless otherwise defined in the data sheets and/or other requisitioning documents, equipment shall be suitable for use under the following service conditions.

6.1

AMBIENT TEMPERATURE Outdoor Temperatures shall be as stated on the Site Conditions and Available Utilities Data Sheet.

6.2

ENVIRONMENTAL CONDITIONS The ratings of the installation shall take full account of the specified service conditions. All heat sources within the enclosures shall be accounted for. For the purpose of design, the following environmental conditions apply:

7.0



Maximum indoors: Not exceeding +30°C. (40°C with A/C failure)



Maximum daily average indoors : Not exceeding +25°C



Relative humidity may be as high as 81% indoor with condensation.



Rapid changes of air temperature and pressure shall be taken into account.



Equipment will be placed in a saline and corrosive atmosphere.



Materials may be exposed to direct sun radiation.

WORK UNDER SPECIAL CONDITIONS Certain low voltage control circuits may require work to be performed in the vicinity of live circuits. Changes to/or modification of energized power circuits shall be done only after clearance of the lines and equipment by the Company. No work shall be performed on live circuits at any circumstances. When work is to be done on part of the main electrical distribution system which is energized, the Supplier shall not commence work until he has received a written permit from the Company to the effect that it is safe to do so. When the work is completed, the Supplier shall sign the permit to that effect and return it to the Company. The Supplier shall not operate Switchgear forming part of the main distribution system or otherwise interfere with its operation. No apparatus whatsoever shall be connected and made live without notifying the Company.

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7.1

General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

MATERIAL, WORKMANSHIP, AND SUITABILITY All materials and parts included in the construction shall be new and unused, of current manufacture, the highest grade, and free from all defects and imperfections likely to affect performance. Where several approved Subsuppliers are shown for one type of material, all material of that type is to be of the same manufacture. The Company shall approve all materials, equipment, and methods of installation. Aluminum material shall not be used for offshore facilities. Cast copper free aluminum housing with epoxy coating suitable for offshore application may be used. Where specific Subsuppliers are mentioned in the specifications or drawings which are not part of Company’s approved supplier list as an alternative Subsupplier, Supplier must use that particular make, catalogue number, etc. The Supplier shall be responsible for furnishing all material and equipment necessary to complete the electrical installation in accordance with the specifications and drawings. Materials may be exposed to direct sun radiation. Design of such materials shall account for the local higher temperatures. Alternatively, sunshades or covers shall be provided. It is Supplier’s responsibility to indicate which materials require sunshades or covers and supply and install the sunshades and covers wherever necessary and required by the Company. The Supplier shall also furnish and install all material and equipment which is not specifically mentioned or shown but is necessary for a complete and workmanlike installation. Concealed work shall be left open for inspection and test until approved by the Company. All materials shall be approved prior to installation. The Supplier shall carry out all installation work with competent tradesmen having experience in this form of installation. The Supplier shall provide competent technical supervision. The completed installation shall be: 

of the highest quality, workmanship and appearance.



carried out in accordance with the specified relevant rules and regulations



executed to the satisfaction of the Company

The Supplier shall provide all tools, installation, and testing equipment for his use. Where special tools are recommended by any equipment Subsupplier, the Supplier shall conform to such recommendations. The Supplier shall provide all electrical safety equipment as required by law and regulations and in such a manner as to provide safety and protection for all personnel in the area of work. The Supplier shall be responsible for the suitability and safety of the equipment; no equipment shall be used which may be unsafe, uncertified, or likely to cause damage. Any equipment damaged or broken at site shall be replaced or repaired by the Supplier at their cost.

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7.2

General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

AREA CLASSIFICATION The location and extent of the classified areas for the topside process modules shall be determined in accordance with API 505 / IP-15 (as per project requirements). Tanker related area classification guidelines given in IEC 60092-502, “Electrical Installation in Ships, Tankers – Special Features,” shall be followed. The gas likely to be present on the facility will be a combination of heavier and lighter than air gases. The gas group applicable on the FPSO will be Group IIA with a temperature classification T3. Equipment required to operate in an emergency situation such as escape lighting shall be suitable for use in a Zone 2, Group IIA, and Temperature Class T3 hazardous area. All equipment installed on open deck and exposed to the weather shall be suitable for use in a Zone 2, Group IIA, T3 hazardous area for reasons of standardization.

7.3

DEGREES OF PROTECTION The minimum enclosure degree of ingress protection, in accordance with IEC 60529 and Classification Society Rules and shall be: 

IP56 for outdoor use



IP23 for battery sets installed indoors



IP41 for equipment installed indoors (in enclosed temperature controlled buildings) with the exception of UPS systems (IP 31), transformers and switchgear (IP 22), and neutral earthing resistors (IP 23)

8.0

ELECTRICAL SYSTEM

8.1

POWER SUPPLIES 

Rated frequency:



Rated medium voltage: 11000 V AC / 13800 V AC / 6600 V AC



Rated low voltage:



System nominal low voltage:

0397-MI20-60S1-6005

60 Hz

440 V AC 440/220 V AC

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8.2

General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

CONSUMERS

MV-motors ( 200 kW to 1500 kW)

11 / 6.6 kV AC, 3 Phase, 60 Hz

MV-motors ( 1500 kW)

11 / 13.8 kV AC, 3 Phase, 60Hz

LV-Motors ( 200 kW)

440 V AC, 3 Phase, 60 Hz

Back-up lube oil pumps DC motors

Power supply and autonomy time by Supplier

LV motor starter control

220 V AC, 1 Phase, 60 Hz from switchboard internal

Heating < 3 kW

220 V AC, 1 Phase, 60 Hz

Heating  3 kW

440 V AC, 3 Phase, 60 Hz

Convenience Socket Outlets

220 V AC, 16A, 1 Phase (L-L) + E, 60 Hz (3-pin)

Welding Socket Outlets

440 V AC, 63A, 3 Phase + E, 60 Hz (4 pin)

Plant Lighting

220 V AC, 1 Phase (L–L), 60 Hz,

Emergency Lighting

220 V AC, 1 Phase (L-L), 60 Hz from emergency distribution board and fed from Emergency Diesel Generator.

Escape Lighting

220 V AC, 1 Phase(L-L), 60 Hz from emergency distribution board and fed from emergency supply and equipped with 90 minutes integral batteries

ESD, F&G Systems, Telecommunication Equipment

220 V AC, 1 phase, 60 Hz UPS maintained 1 hours by batteries

Marine Radio Equipment (SOLAS)

DC UPS maintained 1 hours by batteries

Turbine Generator Auxiliaries Control

220 V AC UPS and 24 V DC as per Supplier requirement

MV Switchboard Control

220V UPS / 110V DC UPS as per supplier requirements (110V DC shall be derived by supplier)

ICSS

220 V AC, 1 phase, 60 Hz UPS maintained 30 minutes by batteries

Operator Consoles

220 V AC, 1 phase, 60 Hz UPS maintained 30 minutes by batteries

Solenoids

24 V DC powered from FCS cabinets

8.3

ELECTRICAL SYSTEM VARIATIONS Electrical equipment shall be capable of giving its rated output continuously at 90% to 110% of the nominal system voltage coincident with frequency variations of ± 5% of the nominal system frequency. Voltage depressions to 80% of the nominal system voltage at equipment and motor terminals during motor starting shall have no detrimental effect on equipment operation. Dynamic voltage overshoots to 115% of the nominal system voltage at equipment terminals for duration of maximum 5 1.5 seconds shall have no detrimental effect on equipment operation.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Voltage and Frequency Variations for AC Distribution Systems Quantity in Operation

Permanent Variation

Transient Variation (Recovery Time)

Frequency

±5%

±10% (5 s)

Voltage

+6%, −10%

±20% (1.5 s)

Voltage Variations for DC Distribution Systems (such as systems supplied by DC generators or rectifiers) Parameters

Variations

Voltage tolerance (continuous)

±10%

Voltage cyclic variation deviation

5%

Voltage ripple (AC r.m.s over steady DC voltage)

10%

Voltage Variations Systems Type of System

Variations

Components connected to the battery during charging

+30%, –25%

(see Note 1) Components not connected to the battery during charging

+20%, –25%

Note: 1) Different voltage variations as determined by the charging/discharging characteristics, including the ripple voltage from the charging device, may be considered.

8.4

SYSTEM NEUTRAL / EARTHING The HV system shall be grounded through resistance grounding to limit the ground fault current at the generator neutral point or step down transformer neutral point. Faulted circuits shall be automatically disconnected. The LV distribution system shall be ungrounded, floating and shall be provided with a central earth fault monitoring system. The DC and UPS systems shall be floating and shall be provided with a central earth fault monitoring system.

9.0

EQUIPMENT INSTALLATION All equipment and materials shall be installed in accordance with the project documents.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Any variations from the proposed positions shall be agreed in writing with the Company prior to installation.

9.1

INSTALLATION OF ELECTRICAL EQUIPMENT The Supplier shall install all electrical equipment within their scope such as switchgear, batteries, chargers, control panels, light fixtures, speakers, etc. on prepared foundations. The equipment Supplier's representative shall supervise when for the installation. It shall be the Supplier's responsibility to ensure that the prepared foundations are satisfactory before the equipment is positioned. Foundations supplied by others are noted in the Company’s supplied equipment. Supplier shall install all items of equipment together with all necessary cables and racks. In general, AC motor starters will be centralized. The mounting stanchions on package units shall be supplied and installed by associated package unit Subsuppliers. The mounting stanchions of all other equipment shall be supplied and installed by the Supplier. Local control stations and safety switches shall be supplied and installed per the scope of work indicated in the drawings. The cables between motors and MCCs and between the control station and a MCC will be supplied by the Company and installed on equipment terminal boxes (directly) by the Company unless indicated in the scope of work documents. All other electrical equipment supplied by Subsuppliers and requiring external connections shall be wired by the Subsupplier to terminal blocks in junction boxes located at the edge of the skid or package equipment or to terminals in the control panel. All major equipments shall be installed in accordance with the Subsupplier’s instructions and under the supervision of the Subsupplier’s representative where appropriate. The Supplier shall fabricate any supports necessary for all items such as local control stations / devices, junction boxes, lighting luminaries, speakers, control stations, receptacles, panels, etc. using as a guideline the typical installation standard details provided. These are to be fabricated from steel channel or angle as necessary to the satisfaction of the Company. All junction boxes shall be in such a way that they can be easily accessible for maintenance and termination and shall be installed maximum 1.8m from the walkway level to the top of the junction boxes. The Supplier shall install Stainless steel with black engraved letter nameplate to each item of electrical equipment. Each plate shall indicate the equipment Tag number and description and shall be securely and permanently attached to equipment with SS screws or rivets. With the exception to smaller devices like instruments where the name tag can be secured by stainless steel wire. Tagging shall be installed in such a way that equipment certification is not affected. The Supplier shall propose alternatives to rivets if fastening by rivets should affect certification and zone ratings. In addition to the tags on the equipments and instruments, supplier shall provide stainless steel tag with black engraved letter on the stanchions / supports as per installation standard details provided by Company.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Electrical equipment shall be aligned, leveled, plumbed, and firmly secured to the nearest suitable firm steel work. They shall not be bracketed to process lines, handrails, lattice, floors, etc.

9.2

CABLES All cables provided by the Supplier shall comply with Company Electrical & Instrument Cable Specification. Cable shall not be pulled over edges or other hard and pointed obstacles that can damage the insulation, nor shall it be bend too sharply. All possible precautions shall be used to prevent damaging of the cable. Care has to be taken that the cables are not subjected to heat and strain or pressure at the same time. Changes of direction on racks or trays shall cater for the minimum bending radii recommended by cable supplier and following minimum cable bending radii shall strictly followed, where D is the overall diameter of the cable: LV and Instrument cables MV cables

12 D

Multi core

8D

8D

Supplier shall strictly follow cable subsupplier’s recommendations when cables are installing (pulling, laying, etc) when ambient temperature is below 5° C. Cable systems and accessories should be installed, so far as practicable, in positions that will prevent them from being exposed to sun light, possible for mechanical damage, corrosion or chemical influences (solvents), as well as to the effects of heat. Where exposure to sunlight or possible for mechanical damage are unavoidable, protective measures like cable tray covers (SS316L material) shall be used. Cables shall be routed in vertical and horizontal planes as far as possible and shall be run with minimum number of changes in direction, consistent with good practice and neat appearance. Cables shall be routed in such a manner that routine maintenance and removal of equipment can be carried out without disturbing the cables. Cables shall not be installed adjacent to any heated pipes or ducts. Where crossing above heated pipes or ducts is unavoidable, the cables must be kept at least 150 mm from the outer surface of insulation of such pipes or ducts and a heat barrier should be installed to protect the cables from exposure to excessive heat. Only skilled personnel shall carry out the termination of cables. Special attention shall be paid to preparation of the ends. Cutting and stripping of the sheath shall be done carefully using proper tools without damaging the insulation. Cables shall be firmly secured to prevent stress at the termination via insulated SS tie-wrap, at a distance within 300 mm away from the cable gland to the offset. When estimating the cable length requirements, adequate percentage shall be allowed for slack, jointing, wastage, etc. It is the responsibility of the Supplier to define the cutting length of each individual cable.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Proper care shall be provided when installing the cables. Any cable or cable outer sheath damaged during cable installation shall be replaced by the supplier at his expense. All cable entries shall be bottom entry unless special requirements by the Company

9.3

CABLE GLANDS / MULTI CABLE TRANSITS Termination of armored and braided cables shall be made using double compression type nickel plated brass cable glands. The glands shall be suitable for the reception of all strands of the wire armoring that shall be securely clamped in a permanent manner. Cable glands shall be selected to suit the type of cable and termination box / enclosure, and shall be of the appropriate type of protection, e.g. Ex 'd', Ex 'e'. Effective earth continuity shall be ensured between the cable armor / braid and the gland plate or the internal earth terminal. All glands size shall be in metric unit. Type of glands and size to be used will be stated in the Electrical Cable Schedule during detailed design phase. The cable entry shall be made water and / or gas tight using properly sized compression type cable glands with non-flammable sealing washers, serrated washer and back nut to maintain the equipment’s IP rating. Grounding tabs should not be used necessary approved by the company on a case by case basis. When preparing cables prior to fitting glands, the gland Supplier instructions shall be strictly followed. In all cases, care shall be taken to ensure that the lay of the armor is maintained after the gland is completely fitted. All cable ends that are not terminated immediately after cutting shall be sealed effectively to prevent ingress of moisture and shall be protected from damage until termination is complete. The selection of cable gland sizes to suit the appropriate dimensions of the selected cable shall be the responsibility of the Supplier. These include adaptors and gland reducers if required and the same shall be provided by the supplier. For skid-mounted equipment, the Supplier shall provide cable glands for cables installed by the Supplier. Cable transits shall be installed such that the integrity of the bulkhead or wall is maintained. Supplier shall locate and install cable transits. Cable transits shall be provided with minimum 20% spare entries. The Supplier shall provide blocks for Multi Cable Transit (MCT) frames. The installation of compression blocks shall be per Subsupplier instructions, i.e. properly greased etc. Spare and unused glands or MCT frame openings shall be properly blinded (nickel plated brass certified plug where applicable) or sealed. MCT frames shall be identified on each side of frame with labels. Electrical and Instrument cables shall be as much led through separate MCT frames. All cable passing through MCT should have a cable Tag number at both sides of the MCT.

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9.4

General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

CABLE TERMINATIONS Cables shall be terminated in a safe neat and approved manner at the associated equipment, including any equipment erected by others. All spare cable cores shall be terminated on dedicated spare terminal block. All shields shall be terminated on terminal blocks. All cable conductors shall be provided with cable crimps of the compressed type and shall be of the correct size and approved type for the conductor concerned. Compression tools and dies shall be designed and supplied for specific use with the connectors used and shall be maintained in good order. After compression, the conductor and crimp shall form a solid mass ensuring good conducting properties and mechanical strength. Control cables shall be marked in accordance with the relevant clause of this specification. Each cable core shall be marked at each end with its respective identification reference (cable tag, terminal block and terminal number as minimum) by means of pre-printed sleeves of the correct size over the conductor insulation. All cables shall be identified: 

At each gland termination



At each side of transits

The cable tags numbers shall be as indicated in the Electrical Cable Schedule. The cable tags shall be stainless steel with black engraved letter tied to cable using appropriately sized insulated stainless steel cable ties.

9.5

CABLE SUPPORT SYSTEMS Cable supported on a cable ladder or cable tray shall be securely fixed as defined below: 

All LV and MV, electric, electronic, instrumentation and telecommunication cabling including fiber optic cabling shall be continuously and adequately supported and braced so as to provide maximum protection against mechanical damage. Cables shall be supported and protected from mechanical damage from the point where they leave cable trays / racks to equipment and other devices.



Special attention shall be paid so as to prevent any stress of the cable. Additional insulated stainless steel cable straps for vertical runs at every 400mm shall be applied.



Each cable strap in hot areas and at the vent stacks shall be of the stainless steel type.

Cables on a cable ladder or tray may be installed in layers. Power cables shall not be stacked more than 2 layers high. Control and instruments cables shall be installed in a neat and orderly manner and shall be adequately secured by the methods detailed above. Where cable bundles for different applications are running parallel to each other, appropriate structural partitions shall be mounted or cables shall be installed on separate cable trays / ladders. Cables of 30 mm diameter and below shall be secured in groups of 6 cables or less. Cables above 30 mm diameter shall be individually secured.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

For duplicated items and items requiring duplicated / redundant power supplies, the cables shall follow different routes as far as practicable. Cables of different voltage levels and of a different wiring system shall be segregated as follows: 

System 1: Medium and high voltage power cables greater than 1 kV root mean square (rms), line-to-line.



System 2: Low voltage power / lighting and control cables (such as motor LCS/LCP cables).



System 3: Process control, safety system cables such as ESD, Fire and Gas, Instrument and Communication cables.



System 4: Intrinsically safe circuit cables.

Separate cable trays shall be provided for each system. The minimum distance between the cable trays for each system shall be 300mm. In areas where separate cable trays are not feasible (accommodation / engine room, etc.), different systems shall run on the same tray, the minimum distance between each system shall be 50mm for Systems 2&3, 3&4 and 2 &4. If the above distance cannot be met due to space constraint, a divider of same material of cable tray shall be used between systems. The divider height shall not be less than the height of the cable bunch. System 1 shall run on separate cable tray and maintain a minimum distance of 300mm from the other systems.

9.5.1

CABLE TRAY The Cable tray shall form a continuous support for cables. The ladder / tray shall be installed to form a complete, continuous system, by the use of standard fittings and devices at tray elevation or direction changes and at branches. Cable tray shall be supported on proprietary support channels at a maximum spacing of 3 meters. The Number / type of supports for main cable ladders shall be calculated to carry cable ladder / cables including a weight of 120 kg (one person). The Supplier shall supply and install all electrical supports as far as necessary. All cabling shall be mounted on cable trays. Cable trays for outdoor service shall be SS 316L heavy-duty design complying with NEMA 20B per NEMA VE1, and Galvanized cable trays shall be used for indoor application. In switchgear rooms, all overhead LV cabling can be installed on a grid of Galvanized channels supported on Unistruts. Cable tray installation shall be as per guidelines in NEMA VE2. All cable trays shall be applied with VCI (Volatile Corrosion Inhibitor) solution before installation in order to prevent corrosion. Cable trays shall be secured by means of proper and dedicated cable tray supports. Process piping, process equipment, and handrails shall not be used to support cable trays. The cable trays shall have equi-potential bonding. Cable extensions from cable trays to equipment shall be supported and protected against mechanical damage.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Ladder cable trays are preferred for cable trays width 300mm and above; SS 316L perforated trays may be used for secondary cable runs or when the installation of ladder cable tray is not possible. All cable trays exposed to direct sunlight, where cables are subject to mechanical damage due to falling object, corrosive liquids and vertical trays shall be provided with cable tray covers. These covers shall be secured with SS316 clamps using nut and bolt & shall also be wrapped with PVC insulated SS316 straps. All cable trays installed below gratings shall be provided with cable tray covers. All vertical cable trays shall be provided with cable tray covers from 1.8 m from the deck level. All brackets and support steelwork shall be carbon steel and shall be painted. Insulating material (Teflon sheet) shall be used between dissimilar metals (i.e. between SS junction box and carbon steel support, SS cable tray and steel support, etc) to avoid galvanic corrosion. Where brackets and supports are welded in position, protective coating damaged by the welding shall be repaired. Where galvanized steel has been cut for fabrication purposes or has been damaged during or after installation, adequate repairs to return the installation to an "as new" situation are to be carried out by coating. The Supplier shall install all cable supports from the cable rack to the equipment, start / stopunits, etc. Cables shall be secured to the trays at 400 mm maximum intervals for vertical cable run and 900mm maximum for horizontal run cables using insulated stainless steel tiewraps of an approved type. Cables to packages shall be installed and clipped to the structure or non-removable parts of the package. Low voltage power, motor control cables, low voltage lighting, and small power cables may be installed on the same rack and shall be bunched separately. PAGA system cables shall run on the electrical tray and shall be segregated with mechanical partition. PAGA system A & B cables shall not run on the same tray and shall run separately their entire length as far as practical. For instrument installation, refer General Instrumentation Construction on Topsides Specification.

9.6

EARTHING Suitable earthing shall be installed for: 

Safety of personnel



Protection against static electricity



Instrument systems (isolated earth)



Protection against lightning

Suitable earth boss shall be installed to connect the earth wire to ship hull, platform, etc.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Metallic non-current carrying parts of all major electrical equipment such as motors, switchgear, motor starters, etc. shall be earthed by a suitable connection to the frame, skid, or steel platform in order to protect personnel safety. Tanks and process vessels containing flammable liquids or gas shall be earthed by a suitable connection to the frame, skid, or steel platform in order to protect against static electricity. Reference shall be made to IEC 60079-14 for protection against lightning and the accumulation of static charges. Parallel earthing shall be employed on package equipment with a number of electrical components to be earthed. Series looping of equipment shall not be employed. This means earthing of equipment shall be done by branching off from a main earth conductor to each individual enclosure or by connecting straight to the earth bars. On equipment, earth conductor connections that are regularly disconnected for maintenance shall be made with screw type solderless connectors. All other connections shall be made with crimp type connectors. Bolted group connections shall be made with corrosion-proof materials with spring washers and / or have locknuts fitted. When equipment earthing or bonding jumpers are insulated as opposed to bare copper, the color of the insulation shall be yellow / green. Minimum size of protective earth conductors shall be 6 mm² (internal). Earth bars to which equipment earthing is connected shall be provided; Earth bar is to be provided with bolts and washers size M10 to accommodate external earth connections. The size of the bars shall be 70 mm² minimum. All electrical joints made for earthing shall be accessible and checked for tightness and electrical contact (clean, not corroded). Removable parts shall be earthed by means of a flexible, insulated earth wire (links to doors) yellow / green. Separate earth bars shall be provided for the instruments “clean” (IE), “intrinsically safe” (ISE), and “instrument protective” (IPE) Earthing systems. These shall be independently connected by green / yellow earth wires to the same point as the power system “dirty” earth (PE). Mechanical protection for the earthing conductors shall be provided in the same manner as all the other cables. All mechanical, electrical equipment and metal parts that may become energized due to electrical faults shall be directly connected to the earthing system. The armoring of power / control cables shall be earthed at both ends. The shielding tape or braid installed on single conductor cables shall be grounded at the supply end only. Supplier shall be responsible for earthing of pipes across insulating flanges and earthing of HVAC ductwork.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Size of Earth Conductors (Equipment and System Earthing) Type of Earthing Connection

Earth-continuity conductor in flexible cable or flexible cord

Cross-sectional Area ‘A’, of associated current carrying Conductor

Minimum Cross-sectional Area of Copper Earthing Connection

A≤16 mm2

A

16 mm2 < A ≤ 35 mm2

16 mm2

A > 35 mm2

A/2

9.7

LIGHTING AND SMALL POWER

9.7.1

PLANT LIGHTING Plant lighting and emergency lighting shall consist of fluorescent-type lighting fixtures with 2 x 36 W or 2 x 18 W T8 bi-pin long life lamps and electronic universal voltage input type ballast. Exterior lighting fixtures shall be suitable for installation in a Zone 2, Group IIA, T3 classified area at minimum. Emergency lighting fixtures shall be provided on escape routes and in vital operator areas. The lighting level on the escape routes under emergency conditions shall be as indicated in this specification below. Escape lighting shall consist of fluorescent-type lighting fixtures with 2 x 36 W bi-pin long life lamps and electronic ballast. Escape lighting fixtures shall be Ex design and shall have integral batteries rated to maintain the required illumination levels for at least 90 minutes with one lamp in operation. Supplier shall check emergency and escape lighting systems for proper operation. The escape and emergency lighting shall provide illumination upon failure of main power fed from the emergency generator. Floodlights shall be of the high-pressure sodium type with integral ballast. Floodlights shall be checked at night and directed for best results. The Supplier shall check lighting panel fuses for proper operation and size. Voltage at the most distant fixture from the lighting panel shall be no less than 5% lower than the switchboard voltage. The maximum voltage drop in a branch circuit shall be 3%.

9.7.2

Illumination Levels Lighting systems shall comply with the illumination levels as detailed in the table below:

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

LOCATION

LUX

TOPSIDE General process areas

100

Compressor areas

150

Pump and valve areas

150

Walkways on the module

50

Control room (if provided)

250

In office areas

450

Transformer room (if provided)

100

Battery room

100

Switchgear and other electrical rooms

200

Air compressor room and IGG room

150

Other machinery space

100

Stores

50

Safety lighting

Adequate to permit safe evacuation

Main Deck Below Module

50

Escape Safety lighting

5

SHIPSIDE

9.8

CCR, office and comm. Room,

250

Desk area in office, conference room

400

Living quarters general area

100

Laboratories

250

Galley cooking table

300

Showers and toilets

180

Sleeping cabins

120

Safety lighting – electrical & control rooms

10

Safety lighting – other areas

5

HEAT TRACING Company project documents such as P&IDs, Piping Isometric and Line Lists indicates those pipes and associated items that are to be traced. The Supplier's scope of work shall include the detailed design, supply and the installation of all heat tracing materials. Electrical heat tracing shall be designed and installed in accordance with IEC 60079-30 or IEEE-515 and in accordance with the Manufacturer’s design and installation recommendations. All heating cables employed shall be of the self-regulating type and shall be suitable for use in a Zone 1 hazardous area. The heating cables maximum sheath temperature shall not exceed the temperature class indicated on the project documents. All trace-heated pipes / lines shall be thermally insulated on completion of the trace heating installation.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Heating cables shall be able to withstand the normal pipe temperature (medium temperature) and the exceptional exposure temperatures as result of steam cleaning where applicable. Each heating tape shall be terminated in a junction box using a custom-made cable gland supplied specifically for that purpose. Each junction box shall be mounted immediately adjacent to the end of the heating tape. The end of the heating tape remote from the junction box shall be sealed using the proper seal. Heat loss calculations and the group loading shall be based on the minimum design ambient temperature. Heat loss calculations shall include a safety factor of 10 %. Group loading shall not exceed 80 % of the circuit breaker rating. Supplier shall verify for each heating group that at start-up, the associated circuit breaker at minimum design ambient temperature does not trip. Supplier shall provide each heat tracing circuit with overload, short circuit and earth leakage protection of 30 mA and status contacts in centralized distribution panels. The rating and type of circuit breaker applied will be indicated in the requisitioning documents. Status contacts shall be looped in series and wired out to a common terminal to give composite alarm to Company ICSS system. Heating cables of stand-by equipment shall not be connected to the same heating circuit. If Supplier skid / package has some part of the lines shall be heat traced, then it is the responsibility of the Supplier to pre-wire it to a skid edge junction box.

9.9

TERMINAL AND JUNCTION BOXES All Junction boxes shall be made of SS 316L painted RAL7035 and shall be of the increased safety (Ex “e”) type as minimum. For small junction boxes (lighting sub junction boxes and PAGA looping cables), glass reinforced polyester (GRP) can be used. The use of Ex “d” type of junction boxes shall be avoided. Junction box Covers shall be provided with gaskets. For Zone 1 and Zone 2 the terminal blocks shall as a minimum be of the increased safety (Ex “e”) type. All terminals shall be nickel plated, shall accept one wire per terminal only and be so arranged within the enclosure that all incoming cable cores, (size 2.5 mm, 2 minimum) can be accommodated.

10.0

ONSHORE FABRICATION This section specifies guidelines for the electrical installation, Precommissioning, and testing at any onshore location. The Supplier shall complete as much work as possible at the onshore location to ensure the offshore work is kept to a minimum.

10.1

CABLING Any cable having its origin and destination within the same area and run wholly within that area shall be installed and terminated. No cables are to be partly installed and coiled for completion offshore unless by prior agreement with the Company.

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

All cables shall be permanently tied to cable tray / cable ladder. Where this is not possible due to the need to install further cables on the same tray offshore, the cables shall then be securely fastened to the tray with temporary fasteners to prevent movement during transport. All installed cables shall be protected from damage from moving or falling objects during module load-out and transportation. All transit frames shall be completely blocked prior to transport to offshore location even if there is a requirement to add further cables offshore. Cables shall be tagged either side of each transit as defined in the relevant clause of this specification.

10.2

INSPECTION, TESTING, PRECOMMISSIONING, AND COMMISSIONING The intention of the onshore installation, testing, and Precommissioning is to carry out the maximum work on the plant before the module load-out to reduce offshore work and highlight interface points, defects, and design modifications that should be resolved before the units are put into service onshore or offshore. The Supplier shall furnish his own test procedures and test sheets to the Company for approval. The Supplier shall submit these documents with the bid. The Supplier shall also provide a computerized status index of all documentation required to achieve mechanical completion acceptance. The status index shall be updated daily to reflect documentation completion.

10.2.1

Extent of Testing and Inspection After erection of the electrical equipment and completion of electrical installation and connections, Precommissioning tests shall be made by the Supplier and witnessed by the Company to prove general conformity to applicable Regulations and Codes of Practice. The Supplier shall provide at their expense all tools, instruments, labor, and other facilities required for Precommissioning and tests (this shall include supply of electrical isolation padlocks / keys and key safes) and shall perform the Company required work. The following is a guide to inspection and testing required at the onshore location: 

Inspection of equipment and installation to check for mechanical integrity



Inspection of equipment and installation to check for compliance with project documents, drawings, specifications, regulations, and codes of practice



Verification of polarity and phase sequences



Tests of continuity including point to point wiring checks



Insulation resistance tests (Megger testing)



Tests of effectiveness of earthing



Primary injection tests and calibration of current transformers (CTs) and relays

Note:

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Secondary injection tests can be made by prior to Company consent where primary injection tests are not feasible. 

No load run-up, load tests, tests of transformer, and tests of variable speed drives / soft start systems



Functional tests of equipment and devices such as UPS DC systems and chargers, UPS AC system, etc.



Electrical running tests of electrical equipment and systems such as generators and associated switchgear. HVAC system shall be tested including the pre-heating and cooling systems.

The activities specified herein do not preclude the necessity for further inspection and testing to suit individual features or the Subsupplier’s instructions and equipment. The Supplier shall be responsible for taking all necessary safety precautions, the replacing of all equipment and sundries (e.g. fuses damaged during testing), and the maintenance and preservation of the installation until taken over by the Company. Supplier shall record all the inspection and test results in Company supplied Mechanical Completion Inspection and Test Record (ITR) formats. Completed ITRs shall be subject to verification, review and approval by Company representative and/or Class surveyor.

10.2.2

Power Supply and Distribution “ITP” indicates items to be designated on the test report form.

Transformer Tap setting, nitrogen pressure, and oil levels shall be checked and verified as part of Precommissioning. Routine site tests such as winding resistance tests, insulation resistance of power, and auxiliary circuits shall be carried out before energizing the transformers. Temperature, oil level, and pressure set points shall be verified before energizing the transformer. Upon energizing the transformer, no load voltages and temperatures shall be recorded on equal intervals. All results and values shall be recorded.

UPS and DC Systems Prior to energizing the UPS, all the prestart and functional checks shall be carried out as listed in the Commissioning procedures. Load testing of the UPS along with batteries shall be carried out. End cell voltages shall be recorded before and after the load test. The list of inspection and test items listed in the ITP shall be completed and recorded.

Switchgear / MCC / Distribution Panels ITP – Prior to energizing, insulation resistance of each bus shall be measured from phase-tophase and from phase-to-earth with breakers / contactors open. Before switchgear is energized, each circuit breaker shall be checked as follows:

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General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A



Close and trip circuit breaker from its control switch and remote control station.



Trip each electrically operated circuit breaker with its mechanical trip device.

ITP – Each adjustable element shall be set, calibrated, and tested using a cycle counter, load box, ammeter and voltmeter as required, or using a relay test set having good wave form. Settings, calibration points, and check points shall conform to the Power System Relay Data shown on the coordination curves, one line diagram, or schedule. Instrument transformer secondary circuits shall be tested by the following methods: 

Apply current to the secondary winding of current transformers and verify that proper relays and meters (as applicable) operate.



Apply voltage to the secondary circuits of control potential transformers and verify that proper relays and meters (as applicable) operate. Care must be taken to isolate transformer so that high voltage primary of transformer is not energized from secondary.

ITP – Automatic transfer circuits shall be completely tested for proper operations as follows:

10.2.3



Test transfers shall be initiated by simulated fault and undervoltage conditions.



The transfer time under no-load condition shall be measured with a cycle counter. Check operation of key interlocks, if installed.



For MV Switchgear, the power-frequency test shall be performed after the switchgear is fully assembled and function tested and installed on board before energization.

Utilization of Motors Test for proper rotation, lubrication, and alignment shall be made with each machine uncoupled. ITP – Machines shall be tested for excessive noise, bearing high temperature, and excessive vibration. New machine vibration should be limited to 2.0 mil amplitude. ITP – Insulation resistance of all motor windings shall be measured before connecting power cables to motors. Measurements shall be repeated after power cable terminations are completed. Motors 440 volts and below shall be tested with a 500 volt Megger to verify a minimum of 10 megohms. MV motors shall be tested with a 5000 volt Megger to verify a minimum of 10 * ("kV"+1) megohms, whereby "kV" represents the nominal system voltage. Tests, in addition to the above, shall be in accordance with Supplier recommendation. Voltage and amperage checks shall be made and recorded on all motors after they are operating under normal plant conditions. These results shall be compared with nameplate data and recorded. The nameplate data shall be compared with the motor data sheets. Final acceptance of rotating equipment cannot be made until the equipment is energized during operational tests.

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10.2.4

General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

Utilization of Motor Control Manually operate all starters, breakers, relays etc., to determine satisfactory mechanical operating condition and confirm that electrical clearances are adequate for service. ITP – Before energizing the equipment, the insulation resistance of each bus shall be measured from phase-to-phase and from phase-to-ground with disconnect devices open. Repeat measurements with disconnect devices closed but with switching devices open. The minimum acceptable reading shall be one (1) megohm (500-volt Megger). Test and set adjustable overload relays and time delay undervoltage relays in accordance with the Subsupplier's drawings and recommendations.

10.2.5

Test Reports All tests made on electrical equipment shall be entered on Supplier furnished forms and shall show the following: 

Identity of equipment



Date of test, time of test, for outdoor test indicate approximate ambient temperature and relative humidity percentage



Test equipment utilized



Paragraph number of this specification used as a basis for the test



Test results



Any corrective action taken to make equipment pass test



Statement shall be made before it is energized or placed in service stating what is required and when and how faulty equipment will be corrected or completed.



Name of person or persons making the test, approval signatures



Company’s approval

Test results shall be given to the Company immediately after completion. Test reports shall be in line with the Company’s standards.

10.3

"AS-BUILT" DRAWINGS The Supplier shall update all drawings to "as built" status upon completion of onshore fabrication. At least two sets of drawings shall be on the FPSO before it sails to the offshore location, and one set of drawings shall be sent to the Company.

11.0

QUALITY ASSURANCE / QUALITY CONTROL SYSTEM The Supplier shall be responsible for all quality assurance and control applied to the work described herein. The Supplier shall implement an organized and efficient quality system and submit a project quality plan denoting a schedule of all inspection and testing to be performed.

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Petrobras FPSO Cidade de Carioca MV 28

General Electrical Construction Specification 0397-MI20-60S1-6005, Rev.A

The Company reserves the right to carry out scheduled system audits to be agreed with by the Supplier.

12.0

APPROVED SUBSUPPLIERS / MANUFACTURERS The following Manufacturers shall be used for procuring bulk material:

Material Cable Glands

Sub-supplier/Manufacturer CMP (Triton-T3CDS)

Junction Boxes

Hawke / ROSE / BARTEC / CEAG (Subject to Contractor Approval)

Terminal Strips

Wiedmuller / Phoenix / WAGO

Cable Tags

Stainless Steel with Black Engraved letter

Cable Core Markers

Printed heat shrinkable white tube

Tube Fittings

Swagelok

Tubing

SS316L with min. 2.5% MO content

Lighting Fixtures

Glamox

Flood Light

Glamox

Cables

NEXANS / Draka (Subject to Contractor Approval)

Local Control Station

Stahl / CEAG (Subject to Contractor Approval)

SS Cable Tray

Heavy duty Conforming to NEMA - VE 2

MCT Frame & Sealing

Roxtec, Brattberg

Manufacturers not noted above shall be subject to prior Company approval.

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