First edition. Mobile and fixed offshore units –. Electrical installations –. Part 4: Cables. Reference number. IEC (E). First edition. Mobile and fixed offshore units –. Electrical installations –. Part 4: Cables. X. For price, see current catalogue. PRICE CODE. The International Electrotechnical Commission (IEC) is the leading global IEC , Mobile and fixed offshore units – Electrical installations – Part 4.
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Mobile and fixed offshore units - Electrical installations - Part 4: Cables
Due regard shall be paid to such services as may have to be operated simultaneously. BS IEC 4.
Normal motor and generator protection shall be provided if running unattended for test of the emergency generator or if it is used as a harbour generator. NOTE Battery backed light fittings do not do this in general. Trip of supply to emergency lighting shall give alarm at a manned position.
If this is impracticable, or if lower temperatures are likely to be encountered, consideration shall be given to the provision and maintenance of heating arrangements, applicable to the appropriate authority, so that ready starting will be assured. A second source of energy shall be provided for an additional three starts within 30 min unless hand manual starting can be demonstrated to be effective.
NOTE Consideration should be given to the provision of two starter motors.
These devices shall not be used for any purpose other than the operation of the emergency generator set. This does not preclude the supply to the air receiver of the emergency generator set from the main or auxiliary compressed air system through a non- return valve fitted in the emergency generator room.
Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work.
International, governmental and nongovernmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization ISO in accordance with conditions determined by agreement between the two organizations.
While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
Use of the referenced publications is indispensable for the correct application of this publication.
IEC shall not be held responsible for identifying any or all such patent rights. This is a preview - click here to download the full publication IEC E A list of all parts of the IEC series, published under the general title Mobile and fixed offshore units Electrical installations, can be found on the IEC website. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended.
A bilingual version of this publication may be issued at a later date. This part of IEC also incorporates and coordinates, as far as possible, existing rules and forms a code of interpretation, where applicable, of the requirements of the International Maritime Organisation.For undated references, the latest edition of the referenced document including any amendments applies.
The emergency power system shall be arranged so as to permit total electrical separation from the main power system. This document specifies requirements such as those concerning - types 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.
Cross References:. IEC shall not be held responsible for identifying any or all such patent rights. Full Description Scope: This part of IEC 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.
The following types and applications of cables are not included: optical fibre cables; sub-sea and umbilical cables; cables supplying downhole pumps; data, telecommunication and radio frequency cables.
For dated references, only the edition cited applies. Rooms or compartments in which the emergency source of electrical power, any associated transforming equipment, or the emergency switchboard are located shall be separated from any machinery space containing the main source of electrical power, by classified partitions as defined in the International Convention for the Safety of Life at Sea.
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.