MT 18 - TC 18/MT 18

IEC 61892-3:2019 is applicable to electrical equipment in mobile and fixed offshore units including pipeline, pumping or "pigging" stations, compressor stations and single buoy moorings, used in the offshore petroleum industry for drilling, production, accommodation, processing, storage and offloading purposes.
It applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations and DC installations without any voltage level limitation. Referenced equipment standards may give voltage level limitations.
This document specifies requirements such as those concerning
– enclosures, with regard to material, marking (nameplates and labels), ventilation, earthing, EMC and short-circuit rating of components, and
– specific requirements related to use in an offshore unit, such as
• generators and motors,
• transformers,
• switchgear and control gear assemblies,
• instrumentation of power sources,
• semiconductor converters,
• secondary cells and batteries,
• luminaires,
• communication equipment,
• control and instrumentation, and
• accessories for accommodation and similar areas.
This document does not apply to
– fixed equipment for medical purposes,
– electrical installations of tankers, and
– control of ignition sources other than those created by electrical equipment.
This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the previous voltage limitations have been removed;
b) Clause 4 has been completely rewritten, giving general requirements as to relevant electrical equipment;
c) requirements concerning pyrotechnic fault current limiters have been added;
d) requirements as to gas insulated switchgear have been added;
e) the requirement concerning the isolation of supply to galley has been moved to IEC 61892-2;
f) requirements concerning control and instrumentation have been rewritten, based on changes in IEC 61892-2.

IEC 61892-2:2019 is applicable to system design of electrical installations and equipment in mobile and fixed offshore units including pipeline, pumping or "pigging" stations, compressor stations and single buoy moorings, used in the offshore petroleum industry for drilling, production, accommodation, processing, storage and offloading purposes.
It applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations and DC installations, without any voltage level limitation. Referenced equipment standards may give voltage level limitations.
This document specifies requirements such as those concerning
– sources of electrical power for manned and unmanned units,
– system earthing, both for low-voltage and high-voltage installations,
– interface for electric transmission systems with power supplied from shore, between interconnected offshore units, and with power supplied by offshore units to subsea installations,
– distribution systems,
– cables and wiring systems,
– system studies and calculations,
– protection against electrical faults,
– lighting,
– energy control, monitoring and alarm systems, and
– turret/swivel.
This document gives information and guidance on topics such as
– applicable examples of HVDC VSC technology, and
– guidelines for illumination level.
This document does not apply to
– fixed equipment for medical purposes,
– electrical installations of tankers, and
– control of ignition sources other than those created by electrical equipment.
This third edition cancels and replaces the second edition published in 2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the requirement for sources of electrical power has been rewritten. Requirements both for manned and unmanned units are given. Requirements for essential services of electrical power have been added;
b) the requirement in relation to dead start has been added;
c) the requirement for emergency stop for motor-driven fuel-oil transfer and fuel-oil pressure pumps has been added;
d) general requirements regarding cables and wiring systems have been added;
e) the description of unit interfaces to electrical transmission systems has been included;
f) requirements in relation to energy control, monitoring and alarm system have been rewritten;
g) new clauses regarding swivel/turret and unmanned facilities have been added;
h) informative annexes regarding the following have been added:
– essential source of electrical power;
– emergency source of electrical power;
– applicable examples of HVDC VSC technologies;
– swivel/turret;
– power sources for unmanned units, with separate or combined main and emergency switchboard;
– alternative power sources of electrical power – general requirements;
– illumination level;
– enhanced software simulation;
– architecture for energy control, monitoring and alarm system.

IEC 61892-7:2019 provides requirements for hazardous area classification and selection of electrical equipment and installation in hazardous areas in mobile and fixed offshore units, including pipeline, pumping or "pigging" stations, compressor stations and single buoy moorings, used in the offshore petroleum industry for drilling, production, accommodation, processing, storage and offloading purposes.
It applies to all installations, whether permanent, temporary, transportable or personal, to AC installations and DC installations without any voltage level limitation. Referenced equipment standards may give voltage level limitations.
This document is based on the requirements of International Standards developed by IEC TC 31 regarding area classification and requirements as to installations in hazardous areas and gives additional requirements for installations on mobile and fixed offshore units.
This document specifies requirements such as those concerning
– area classification,
– electrical systems,
– selection of electrical equipment,
– cables and wiring systems,
– ventilation,
– ventilation requirement for battery compartments, and
– inspection, maintenance, repair and overhaul.
This document gives information on topics such as
– gas detection systems, and
– electrical installations in extremely low ambient temperatures.
This document does not apply to
– fixed equipment for medical purposes,
– electrical installations of tankers, and
– control of ignition sources other than those created by electrical equipment.
This fourth edition cancels and replaces the third edition published in 2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the document has been completely rewritten. References are, to the extent possible, made to IEC 60079-14 and to other relevant standards, as appropriate, from IEC TC 31; only requirements concerning offshore installations that deviate from the general requirements for installations in hazardous areas are given;
b) requirements as to gas detection have been transferred to an informative annex;
c) requirements concerning emergency shutdown (ignition source control) have been transferred to IEC 61892-1.

IEC 61892-6:2019 provides specific requirements for the installation of electrical equipment in mobile and fixed offshore units, including pipeline, pumping or "pigging" stations, compressor stations and single buoy moorings, used in the offshore petroleum industry for drilling, production, accommodation, processing, storage and offloading purposes.
It applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations and DC installations without any voltage level limitation. Referenced equipment standards may give voltage level limitations.
This document specifies requirements such as those concerning
– protection during equipment storage and in the installation period,
– installation of generators and motors,
– installation of transformers,
– installation of switchgear and controlgear assemblies,
– installation of semiconductor converters and UPS,
– installation of secondary cells and batteries,
– installation of luminaires,
– installation of heating and cooking appliances,
– installation of trace and surface heating,
– installation of cables and wiring, both low-voltage and high-voltage cables,
– requirements in relation to earthing and bonding,
– lightning protection;,
– testing of completed installation, and
– documentation.
This document does not apply to
– fixed equipment for medical purposes,
– electrical installations of tankers, and
– control of ignition sources other than those created by electrical equipment.
This fourth edition cancels and replaces the third edition published in 2013. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) requirements for protection during equipment storage have been added;
b) the special requirements for distribution board enclosures in accommodation spaces have been deleted;
c) requirements for installation of UPS have been updated;
d) requirements regarding the installation of batteries have been modified;
e) requirements for large single-core cables for three-phase AC have been updated;
f) requirements in relation to cable transit systems have been added;
g) the table on the sizes of earth continuity conductors and equipment earthing connections, set out in IEC 61892-4:2007, has been included;
h) requirements as to the installation of controls and instrumentation have been modified; clauses relevant to design and equipment have been deleted.

IEC 61892-1:2019 is available as IEC 61892-1:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61892-1:2019 is applicable to electrical installations and equipment in mobile and fixed offshore units, including pipeline, pumping or "pigging" stations, compressor stations and single buoy moorings, used in the offshore petroleum industry for drilling, production, accommodation, processing, storage and offloading purposes.
It applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations and DC installations without any voltage level limitation. Referenced equipment standards may give voltage level limitations.
This document specifies requirements such as those concerning
– environmental conditions,
– power supply characteristics,
– location of electrical equipment in units,
– protection against external influences,
– protection against electrical shock, and
– ignition source control.
This document gives information and guidance on topics such as
– cold climate protection, and
– surface treatment and protective painting system.
This document does not apply to
– fixed equipment for medical purposes,
– electrical installations of tankers, and
– control of ignition sources other than those created by electrical equipment.
This fourth edition cancels and replaces the third edition published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) voltage limitations have been removed;
b) definitions for fixed offshore units and mobile offshore units have been included;
c) tables for ambient air temperature and relative humidity have been removed, as this information will normally be given in owner's/operator's documentation for specific projects;
d) the requirement as to ignition source control has been moved from IEC 61892-7 to this document;
e) tables for voltage characteristics have been updated;
f) requirements for a minimum degree of protection for equipment have been moved from IEC 61892-2 to this document.

IEC 61892-5:2019 specifies additional characteristics for electrical installations in mobile units.
It applies to installations that depend on buoyancy, such as column-stabilized units (semi­submersible units), ship- or barge-type units as well as self-elevating units. It specifies additional characteristics for such units, used during transfer from one location to another and for drilling, production, accommodation, processing, storage and offloading purposes.
It applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations and DC installations without any limitation on voltage level. Referenced equipment standards may give voltage level limitations.
This document specifies requirements such as those concerning
– environmental conditions,
– limits of inclination for the unit where the equipment is required to operate,
– bilge pumps,
– navigation and obstruction lights,
– steering gear,
– ballast system,
– jacking systems, and
– anchoring systems.
For electric propulsion, reference is made to IEC 60092-501.
For dynamic positioning systems, reference is made to relevant IMO requirements.
This document does not apply to
– fixed equipment for medical purposes,
– electrical installations of tankers, and
– control of ignition sources other than those created by electrical equipment.
This fourth edition cancels and replaces the third edition published in 2014. This edition constitutes a technical revision.
This edition includes the following significant technical change with respect to the previous edition:
a) the technical requirements as to electric propulsion have been replaced with a reference to IEC 60092-501:2013;
b) the requirement for handrails on main and emergency switchboards has been added;
c) requirements as to control systems and indicators for watertight doors and hatch covers have been made more specific;
d) requirements concerning the holding capacity for jacking systems have been rewritten;
e) requirements as to thruster-assisted mooring system have been rewritten;
f) the annex regarding enhanced system verification (HIL test) for dynamic positioned mobile units has been relocated to IEC 61892-2:2019.

IEC 61892-4:2019 is applicable to the selection of electrical cables intended for fixed electrical systems in mobile and fixed offshore units, including pipeline, pumping or "pigging" stations, compressor stations and single buoy moorings, used in the offshore petroleum industry for drilling, production, accommodation, processing, storage and offloading purposes.
This document specifies requirements such as those concerning
– types of cables,
– voltage rating of cables,
– cables and wiring for interconnection of equipment,
– current-carrying capacities for continuous service,
– correction factors for different ambient temperature and for short time duty, and
– short-circuit withstand capacity.
This document also gives information on the jet fire test for hydrocarbon (HCF) fire resistant cables.
The reference to fixed electrical systems includes those subjected to vibration due to the movement of the unit, for example, cables installed on a drag chain, and not those intended for repeated flexing. This document does not cover flexible cables, for example, those used on drilling decks for top-drive, or cables for portable equipment.
This document is applicable for cables with a rated voltage up to and including 18/30 kV AC and makes reference to cable standards developed by SC 18A.
For higher voltages, relevant standards developed by TC 20 are applicable.
This document does not apply to
– optical fibre cables,
– sub-sea and umbilical cables;,
– cables supplying downhole pumps, and
– data, telecommunication and radio frequency cables.
This second edition cancels and replaces the first 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) construction requirements for cables have been removed; reference is made to relevant standards from Subcommittee (SC) 18A;
b) reference is made to standards from IEC TC 20 for cables with rated voltage above 30 kV;
c) tables for current-carrying capacities for defined installations have been removed; reference is made to relevant standards from IEC TC 64;
d) requirements as to the sizes of earth continuity conductors not contained in a cable have been moved to IEC 61892-6;
e) requirements as to fire stops have been deleted;
f) requirements as to tests for cables exposed to drilling fluids have been removed; reference is made to relevant standards from IEC SC 18A;
g) the procedure for tests of jet fire resistant cables has been updated;
h) requirements as to the design of cable systems have been moved to IEC 61892-2;
i) requirements in relation to the installation of cables have been moved to IEC 61892-6.

IEC 61892-7:2014 contains provisions for hazardous areas classification and choice of electrical installation in hazardous areas in mobile and fixed offshore units, including pipelines, 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) The EPL (Explosion Protection Level) concept has been introduced.
b) The requirements to installations in hazardous area has been rewritten, based on the requirements of IEC 60079-14:2013.

IEC 61892-5:2014 specifies the characteristics for electrical installations in mobile units, for use during transfer from one location to another and for use during the exploration and exploitation of petroleum resources. 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 third edition includes the following significant technical change with respect to the previous edition: the requirement to protection against flooding has been rewritten.

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.

IEC 61892-3:2012(E) contains provisions for electrical equipment 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. This standard applies to equipment in all installations, whether permanent, temporary, transportable or hand-held, to a.c. installations up to and including 35 000 V and d.c. installations up to and including 1 500 V (a.c. and d.c. voltages are nominal values). This standard sets requirements for equipment, which are additional to the requirements given in the product standard for the relevant equipment. This standard does not apply to the 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 4 in the previous edition of IEC 61892-3 regarding type testing has been deleted. Information regarding environmental conditions, including requirements to vibration, is now given in Clause 4;
b) for liquid immersed transformers requirement for overheating alarm and shut down has been added;
c) requirements for low voltage switchgear and controlgear have been rewritten, based on IEC 61439-1 and IEC 61439-2. Only additional requirements to those given in IEC 61439 are given in the standard;
d) requirements to low voltage circuit breakers, switches, contactors and fuses have been added;
e) requirement for subdivision of high voltage switchboard has been added;
f) requirements for luminaires have been deleted and replaced with reference to IEC 60598 series and IEC 60092-306;
g) requirements for heating and cooking appliances have been deleted and replaced with reference to IEC 60335 series;
h) requirement for portable equipment has been added.

IEC 61892-2:2012(E) contains provisions for system design of electrical installations in mobile and fixed units used in the offshore petroleum industry for drilling, production, processing and for storage purposes, including pipeline, pumping or 'pigging' stations, compressor stations and exposed location single buoy moorings. It applies to all installations, whether permanent, temporary, transportable or hand-held, to a.c. installations up to and including 35 000 V and d.c. installations up to and including 1 500 V. (a.c. and d.c. voltages are nominal values). This standard does not apply either to fixed equipment used for medical purposes or to the electrical installations of tankers. This edition includes the following significant technical changes with respect to the previous edition:
- the d.c. voltage given in clause 1 has been updated to 1 500 V, to ensure consistency through all parts of the IEC 61892 series;
- Clause 4 has been rewritten, such that all requirements to emergency power are now given in 4.3;
- the tables for nominal a.c. voltages have been updated in accordance with the last revision of IEC 60038;
- the requirement to cross sectional area for earthing conductors has been made dependent on the system earthing arrangement;
- requirement for emergency stop for motor-driven fuel-oil transfer and fuel-oil pressure pumps has been added. The contents of the corrigendum of March 2013 have been included in this copy.

IEC 61892-5:2010(E) specifies the characteristics for electrical installations in mobile units, for use during transfer from one location to another and for use during the exploration and exploitation of petroleum resources. It applies to all installations, whether permanent, temporary, transportable or hand-held, to a.c. installations up to and including 35 000 V and d.c. installations up to and including 1500 V.(a.c. and d.c. voltages are nominal values). This edition cancels and replaces the first edition published in 2000. This edition includes the following significant technical changes with respect to the previous edition:
a) the requirement to d.c. generators has been deleted;
b) the requirement to EMC has been rewritten;
c) the requirement to power management system has been added;
d) an informative annex regarding testing of DP systems has been added.

IEC 61892-1:2010(E) contains provisions for electrical installations 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 storage purposes. It applies to all installations, whether permanent, temporary, transportable or hand-held, to a.c. installations up to and including 35 000 V and d.c. installations up to and including 1 500 V (a.c. and d.c. voltages are nominal values). It does not apply either to fixed equipment for medical purposes or to the electrical installations of tankers. This edition cancels and replaces the first edition published in 2001. This edition includes the following significant technical changes with respect to the previous edition:
a) the d.c.voltages given in Clause 1, have been updated in order to ensure uniform requirements for all parts of the standard;
b) the requirement to EMC has been rewritten to comply with the requirements of IEC 61000 2 4;
c) a clause regarding environmental impact has been added;
d) Annex A (Guidance on environmental conditions) has been deleted;
e) Annex B (Informative) regarding cold climate precautions has been added.