IEC 61892-6:2013

Mobile and fixed offshore units - Electrical installations - Part 6: Installation

IEC 61892-6:2013 contains provisions for electrical installation in mobile and fixed offshore units including pipeline, pumping or 'pigging' stations, compressor stations and exposed location single buoy moorings, used in the offshore petroleum industry for drilling, processing and for storage purposes. It applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations up to and including 35 000 V and DC installations up to and including 1 500 V (AC and DC voltages are nominal values). This standard does not apply to electrical installations in rooms used for medical purposes, or in tankers. This edition includes the following significant technical changes with respect to the previous edition.
a) Table 1, size of earth continuity conductors has been replaced with the table in IEC 61892-4.
b) The requirements for installation of batteries has been rewritten in order to distinguish better between batteries of the vented type and VRLA/sealed type.
c) An informative annex regarding cable termination has been added.
d) The applicability for DC installations has been increased from 750 V to 1 500 V, in accordance with Part 1 of the series.

Unités mobiles et fixes en mer - Installations électriques - Partie 6: Installation

La CEI 61892-6:2013 contient des dispositions concernant l'installation électrique des unités mobiles et fixes en mer, y compris les canalisations, les stations de pompage ou de raclage, les stations de compression et les systèmes d'amarrage à point unique en zone exposée, qui sont utilisées dans l'industrie pétrolière offshore pour le forage, le traitement et le stockage. Elle s'applique à toutes les installations, qu'elles soient permanentes ou provisoires, transportables ou portatives, aux installations en courant alternatif jusqu'à 35 000 V inclus et aux installations en courant continu jusqu'à 1 500 V inclus (les tensions alternatives et continues sont des valeurs nominales). La présente norme ne s'applique pas aux installations électriques présentes dans les salles à vocation médicale ni dans les navires pétroliers. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente.
a) Le Tableau 1, taille des conducteurs de terre, a été remplacé par le tableau présent dans la CEI 61892-4.
b) Les exigences relatives à l'installation des batteries ont été réécrites afin d'opérer une distinction plus claire entre les batteries ouvertes et les batteries de type VRLA/étanches.
c) Une annexe informative sur le raccordement des câbles a été ajoutée.
d) L'applicabilité des installations en courant continu a été étendue de 750 V à 1 500 V, conformément à la Partie 1 de la série.

General Information

• Status: Published
• Publication Date: 12-Dec-2013
• ICS: 29.260.99 - Other electrical equipment for working in special conditions
• ICS: 47.020.60 - Electrical equipment of ships and of marine structures
• Technical Committee: TC 18 - Electrical installations of ships and of mobile and fixed offshore units
• Drafting Committee: MT 18 - TC 18/MT 18
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 09-Apr-2019

Relations

• Revised: IEC 61892-6:2019 - Mobile and fixed offshore units - Electrical installations - Part 6: Installation
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61892-6


®


Edition 3.0 2013-12



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE


Mobile and fixed offshore units – Electrical installations –
Part 6: Installation

Unités mobiles et fixes en mer – Installations électriques –
Partie 6: Installation



IEC 61892-6:2013

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IEC 61892-6



®



Edition 3.0 2013-12







INTERNATIONAL





STANDARD







NORME



INTERNATIONALE











Mobile and fixed offshore units – Electrical installations –

Part 6: Installation




Unités mobiles et fixes en mer – Installations électriques –

Partie 6: Installation


















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX X


ICS 29.260.99, 47.020.60 ISBN 978-2-8322-1288-2



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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CONTENTS


FOREWORD . 6

INTRODUCTION . 8


1 Scope . 9

2 Normative references . 9

3 Terms and definitions. 10

4 General requirements . 12

4.1 Labelling . 12

4.2 Labels . 12
4.3 Protection from condensation . 12
4.4 Protection during installation period . 12
5 Equipment earthing and bonding . 12
5.1 General . 12
5.2 Earthing of exposed conductive parts . 13
5.3 Equipotential bonding . 14
5.4 Bonding connections . 15
5.5 Connections to the unit structure . 15
5.6 Protection against galvanic corrosion . 15
5.7 Metal coverings of cables . 15
5.8 Cable racks and cable trays . 16
5.9 Ductings of heating, ventilation, air-condition (HVAC) and vessels . 17
6 Cables and wiring . 17
6.1 General . 17
6.2 Installation . 17
6.3 Cable-runs . 18
6.4 Cable cleating and strapping . 18
6.5 Joints and tappings . 19
6.6 Cable ends . 19
6.7 Cable termination . 20
6.8 Cable ladders and trays . 21
6.9 Cables and wiring for interconnection of equipment . 22
7 Generators and motors . 22
7.1 General . 22

7.2 Installation . 22
8 Transformers . 22
8.1 Installation and location . 22
8.2 Isolation of windings . 23
9 Switchgear and controlgear assemblies . 23
9.1 Location . 23
9.2 Insulating mats . 23
9.3 Passageways in front of switchgear and controlgear assemblies . 24
9.4 Space at the rear and passageways . 24
9.5 Positions of section and distribution boards . 24
10 Semiconductor converters . 24
11 Secondary cells and batteries . 25
11.1 Location . 25
11.2 Electrical installation in secondary battery compartments . 26

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61892-6 © IEC:2013 – 3 –


11.3 Protection against corrosion . 26

11.4 Fixing and supports . 27

11.5 Protection of circuits from secondary batteries . 27

11.6 Additional requirements for valve regulated lead acid (VRLA) type
batteries . 27


11.7 Protection against electric shock . 27

11.8 Identification labels or marking . 28

12 Luminaires . 28

12.1 Degree of protection and safety requirements . 28

12.2 Emergency and escape lighting . 29

12.3 Navigation aid system . 29
13 Heating and cooking appliances . 29
13.1 Guarding of combustible materials . 29
13.2 Position of controlgear and switchgear. 29
13.3 Mounting of space-heating appliances . 29
14 Trace and surface heating. 29
14.1 General . 29
14.2 Trace heating cables . 29
14.3 Marking . 30
14.4 Protection . 30
14.5 Requirements for installation in hazardous areas . 30
14.6 Mechanical protection. 30
14.7 Junction boxes . 30
15 Control and instrumentation . 30
15.1 General . 30
15.2 Layout . 30
15.3 Display colours . 31
15.4 Protection against fluid leakage . 31
15.5 Sensors . 31
15.5.1 Location of sensors . 31
15.5.2 Temperature sensors . 31
15.5.3 Pressure sensors . 31
15.5.4 Enclosure . 31
15.5.5 Testing and calibration . 31
15.6 Measurements and indications . 31

15.6.1 Instrument similarity . 31
15.6.2 Scale division . 32
15.6.3 Automatic control sequence . 32
15.6.4 Centralized control . 32
15.7 Controls . 32
15.7.1 Direction of motion . 32
15.7.2 Control levers . 32
15.7.3 Identification . 32
15.8 Alarm system . 32
16 Communication . 32
17 Lightning protection . 33
17.1 Protection against primary structural damage . 33
17.2 Air terminals . 33
17.3 Down conductors . 33

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17.4 Protection against secondary damage . 34

18 Test of completed installation . 34


18.1 Inspections and tests. 34

18.2 Insulation testing instruments . 35

18.3 Insulation resistance . 35

18.3.1 Wiring . 35

18.3.2 Generators and motors . 36

18.3.3 Switchboards, section boards and distribution boards . 36

18.4 Generators . 36

18.5 Switchgear . 36
18.6 Lighting, heating and galley equipment . 37
18.7 Communication systems . 37
18.8 Emergency and safety systems . 37
18.9 Earthing . 37
18.10 Voltage drop. 37
18.11 Requirements of international conventions and regulations . 37
19 Documentation . 37
19.1 General . 37
19.2 Equipment . 37
19.3 Testing . 38
19.4 Maintenance . 38
Annex A (informative) Performance test . 39
A.1 Switchgear . 39
A.2 Generator. 39
A.3 Motor . 39
A.4 Circuits . 40
A.5 Communication, control and alarm systems . 40
A.6 Statutory requirements . 40
A.7 Interference . 40
A.8 Batteries . 40
A.9 Ventilation of battery installations . 40
Annex B (informative) Examples of cable termination . 41
Bibliography . 45


Figure 1 – Recommended arrangement for installation of single core cables – flat
configuration . 18
Figure 2 – Recommended arrangement for installation of single core cables – trefoil
configuration . 18
Figure B.1 – Equipment with through gland . 41
Figure B.2 – Equipment for voltage above 30 V AC or 50 V DC with Ex d armour
clamping gland . 42
Figure B.3 – Equipment for voltage 30 V AC, 50 V DC and below with Ex d armour
clamping gland – termination of instrument cable . 43
Figure B.4 – Equipment for voltage above 30 V AC or above 50 V DC with Ex d armour
clamping gland – termination of power cable . 44
Figure B.5 – Detail of heat shrink isolation between outer braid and screen . 44

Table 1 – Sizes of earth continuity conductors and equipment earthing connections . 14

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61892-6 © IEC:2013 – 5 –


Table 2 – Enclosure-gland type . 19

Table 3 – Location of batteries versus charging power – vented cell type . 25


Table 4 – Location of batteries versus charging power– VRLA or sealed cell type . 26

Table 5 – Test voltages . 35

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INTERNATIONAL ELECTROTECHNICAL COMMISSION


____________




MOBILE AND FIXED OFFSHORE UNITS –

ELECTRICAL INSTALLATIONS –



Part 6: Installation



FOREWORD
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International Standard IEC 61892-6 has been prepared by IEC technical committee 18:
Electrical installations of ships and of mobile and fixed offshore units.
This third edition cancels and replaces the second edition published in 2007. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition.
a) Table 1, size of earth continuity conductors has been replaced with the table in
IEC 61892-4.
b) The requirements for installation of batteries has been rewritten in order to distinguish
better between batteries of the vented type and VRLA/sealed type.
c) An informative annex regarding cable termination has been added.

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61892-6 © IEC:2013 – 7 –


d) The applicability for DC installations has been increased from 750 V to 1 500 V, in

accordance with Part 1 of the series.


The text of this standard is based on the following documents:


FDIS Report on voting

18/1351/FDIS 18/1360/RVD




Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61892 series, under the general title Mobile and fixed offshore
units – Electrical installations, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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INTRODUCTION


The IEC 61892 series of International Standards is intended to ensure safety in the design,

selection, installation, maintenance and use of electrical equipment for the generation, storage,

distribution and utilization of electrical energy for all purposes in offshore units which are used

for the exploration or exploitation of petroleum resources.


This part of IEC 61892 series also incorporates and co-ordinates, as far as possible, existing

rules and forms a code of interpretation, where applicable, of the requirements laid down by the

International Maritime Organization, and constitutes a guide for future regulations which may

be prepared and a statement of practice for offshore unit owners, constructors and appropriate

organizations.
This standard is based on equipment and practices which are in current use, but it is not
intended in any way to impede development of new or improved techniques.
The ultimate aim has been to produce a set of International Standards exclusively for the
offshore petroleum industry.

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61892-6 © IEC:2013 – 9 –


MOBILE AND FIXED OFFSHORE UNITS –

ELECTRICAL INSTALLATIONS –



Part 6: Installation






1 Scope


This part of IEC 61892 contains provisions for electrical installation in mobile and fixed offshore

units including pipeline, pumping or 'pigging' stations, compressor stations and exposed
location single buoy moorings, used in the offshore petroleum industry for drilling, processing
and
...