GB/T 25444.6-2023Mobile and fixed offshore units - Electrical installations - Part 6: Installation (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting:

This document is Part 6 of GB/T 25444 "Electrical Installations for Mobile and Fixed Offshore Installations": GB/T 25444 has been issued the following parts have been published:

---Part 1: General requirements and conditions;

---Part 2: System Design;

---Part 3: Equipment;

---Part 5: Mobile facilities;

---Part 6: Installation;

---Part 7: Hazardous areas:

This document replaces GB/T 25444.6-2010 "Electrical installations for mobile and fixed offshore installations - Part 6: Installation" and is consistent with Compared with GB/T 25444.6-2010, in addition to structural adjustments and editorial changes, the main technical changes are as follows:

a) The applicable limits of the scope have been changed (see Chapter 1, Chapter 1 of the:2010 edition);

b) Changes in terms and definitions (see Chapter 3, Chapter 3 of the:2010 edition);

c) The general requirements have been changed (see Chapter 4, 4:1 of the:2010 edition);

d) Added layout requirements and types of transformers (see 6.1);

e) Added installation and capacity requirements for receiving tanks (see 6.6);

f) Changed the requirements for referenced documents (see 7.1:1, 8:2:1 of the:2010 version);

g) Deleted winding insulation (see 7.3 of the:2010 edition);

h) Changed the width of barrier-free passages and added requirements for passages between switchboard lines and circuit breaker passages (see 7.3,:2010 edition of 8:4);

i) Delete the special requirements for the enclosure of the switchboard in the accommodation area (see 8.6 of the:2010 edition);

j) Changed the installation requirements for batteries and battery packs (see Chapter 9, Chapter 10 of the:2010 edition);

k) Added UPS installation requirements (see Chapter 10);

l) Delete the requirements for discharge lamps with voltages higher than 250V (see 11.3 of the:2010 edition);

m) The installation requirements for cabin electric heaters are deleted (see 12.3 of the:2010 edition);

n) The requirements for heating cables have been changed (see 13.2, 13:2 of the:2010 edition);

o) Changed the marking requirements for heating cables and heating equipment (see 13.3,:2010 version of 13:3);

p) Changes to general requirements for cables and wires, installation, cable laying, cable clamping and binding, cable stuffing boxes, cable wiring, cable ladders Racks and brackets are added, and explosion-proof cable installation requirements, special requirements for cable installation for intrinsically safe systems, bending radius, joints and points are added:

Requirements for branch circuits and cable transit systems, and requirements for equipment interconnection cables and wiring have been deleted (see Chapter 14, Chapter 5 of the:2010 edition);

q) The content of exempted parts that should be grounded has been changed (see 15.2:1, 4:2:1 of the:2010 edition);

r) Changed the dimension table of grounding conductors and equipment grounding (see 15.2:2, 4:2:2 of the:2010 edition);

s) Added grounding requirements for metal enclosures, pipes and conduits or trunking and grounding requirements for hulls and equipment not seam welded to the structure (see 15.3:4, 15:3:5);

t) The cross-sectional area of the equipotential bonding conductor has been changed (see 15.4:3, 4:4:3 of the:2010 edition);

u) The requirements for galvanic corrosion protection have been changed (see 15.6, 4:6 of the:2010 edition);

v) Changed the requirements for cable metal covering (see 15.7, 4:7 of the:2010 edition);

w) Pipes and containers for heating, ventilation and air conditioning equipment are deleted (see 4.9 of the:2010 edition);

x) The direct lightning protection system, lightning rod, and indirect lightning protection system have been changed (see Chapter 16, 16:2, 16:3 and 16:5 of the:2010 edition);

y) Changed the test requirements for complete cables operating at 1kV and above (see 18.1:4, 17:2:4 of the:2010 edition);

z) Added safety extra-low voltage and protective extra-low voltage tests (see 18.2):

This document is equivalent to IEC 61892-6:2019 "Electrical installations for mobile and fixed offshore installations - Part 6: Installation":

Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:

Introduction

GB/T 25444 "Electrical Installations for Mobile and Fixed Offshore Facilities" aims to cover general requirements, system design, equipment, cables, mobile Facilities, installation and hazardous areas, etc:, proposed designs for electrical equipment in mobile and fixed offshore facilities used for petroleum exploration or extraction:

Design, installation, maintenance and use requirements, applicable to pipelines, pumping stations or pipelines for drilling, production, accommodation, processing, oil storage and unloading in the offshore oil industry in-tube cleaning station, air compressor station and single buoy mooring facility:

GB/T 25444 is planned to consist of seven parts:

---Part 1: General requirements and conditions: The purpose is to provide for mobile and fixed offshore installations used for petroleum exploration or extraction General requirements for electrical installations:

---Part 2: System Design: The purpose is to specify systems for mobile and fixed offshore installations used in petroleum exploration or extraction Design requirements:

---Part 3: Equipment: The purpose is to specify the design of equipment for mobile and fixed offshore installations used in petroleum exploration or extraction:

and testing requirements:

---Part 4: Cables: The purpose is to provide for the electrical installation of mobile and fixed offshore installations used in petroleum exploration or extraction:

Cable selection requirements:

---Part 5: Mobile facilities: The purpose is to provide for the electrical Additional features of the device:

---Part 6: Installation: The purpose is to provide for the electrical installation of mobile and fixed offshore installations used in petroleum exploration or extraction:

installation requirements:

---Part 7: Hazardous areas: The purpose is to regulate the hazards of mobile and fixed offshore installations used for petroleum exploration or extraction:

Area classification and selection requirements for electrical equipment in hazardous areas:

GB/T 25444 aims to form a series of standards applicable to electrical equipment in the offshore petroleum industry, but is not limited to petroleum equipment:

use:

Electrical installations for mobile and fixed offshore installations Part 6: Installation

1 Scope

This document specifies the installation requirements for electrical installations on mobile and fixed offshore installations, including those used in offshore oil industry drilling, production Pipelines, pumping stations or pipeline cleaning stations, air compressor stations and single buoy mooring facilities for production, accommodation, processing, oil storage and unloading:

This document specifies the following requirements:

---Protection during equipment storage and installation;

---Generator and motor installation;

---Transformer installation;

---Installation of complete sets of switchgear and control equipment;

---Semiconductor inverter and UPS installation;

---Battery and battery installation;

---Lighting installation;

---Installation of electric heaters and electric cookers;

---Installation of heat tracing and surface heating devices;

---Installation of low-voltage and high-voltage cables and wires;

---Grounding and bonding requirements;

---Lightning protection;

---Completion test;

---document:

This document applies to all permanent, temporary, mobile or handheld AC and DC installations, regardless of voltage level: ginseng the equipment standards may provide voltage level restrictions:

This document does not apply to the following devices:

---Medical fixed electrical devices;

---Electrical installation of liquid cargo ship;

--- Ignition source control equipment other than ignition sources generated by electrical equipment:

Note 1: IEC 60364-7-710 has specific requirements for medical rooms: The requirements for oil tankers are found in IEC 60092-502:

Note 2: For guidance on the protection of non-electrical equipment, see ISO 80079-36, ISO 80079-37 and 6:7 of the IMO2009 MODU rules:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations for undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document:

GB/T 21714.3-2015 Lightning protection Part 3: Physical damage to buildings and danger to life (IEC 62305-3:

2010,IDT)

IEC 60092-350:2020 Ship electrical installations Part 350: General structural and test requirements for ship power cables (Electri-