SC274 Page 1 of 15 IACS Int. 2015/Rev.1 2021 Hazardous area classification in respect of selection of electrical equipment, cables and wiring and positioning of openings and air intakes Interpretation of SOLAS regulation II-1/45.11 SOLAS II 1/Regulation 45.11 of SOLAS Chapter II-1 as amended by IMO resolutions up to MSC.436(99) reads as follows. 11 In tankers, electrical equipment, cables and wiring shall not be installed in hazardous locations unless it conforms with standards not inferior to those acceptable to the Organization.* However, for locations not covered by such standards, electrical equipment, cables and wiring which do not conform to the standards may be installed in hazardous locations based on a risk assessment to the satisfaction of the Administration, to ensure that an equivalent level of safety is assured. * Refer to the standards published by the International Electrotechnical Commission, IEC 60092-502:1999 Electrical installations in ships - Tankers. Interpretation Where the prescriptive requirements within SOLAS and related Codes (IBC, IGC) and the standards published by the International Electrotechnical Commission, such as but not limited to IEC 60092-502:1999, are not aligned, the prescriptive requirements in SOLAS and Codes take precedence and are to be applied. The differences revealed between the above- mentioned documents are listed in Annex 1. Note: 1. This Unified Interpretation is to be uniformly implemented by IACS Societies from 1 January 2017. 2. Rev.1 of this UI is to be uniformly implemented by IACS Societies on ship constructed on or after from 1 July 2022. SC 274 (Dec 2015) (Rev.1 Feb 2021)
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SC274
Page 1 of 15 IACS Int. 2015/Rev.1 2021
Hazardous area classification in respect of selection of electrical equipment, cables and wiring and positioning of openings and air intakes Interpretation of SOLAS regulation II-1/45.11 SOLAS II 1/Regulation 45.11 of SOLAS Chapter II-1 as amended by IMO resolutions up to MSC.436(99) reads as follows. 11 In tankers, electrical equipment, cables and wiring shall not be installed in hazardous locations unless it conforms with standards not inferior to those acceptable to the Organization.* However, for locations not covered by such standards, electrical equipment, cables and wiring which do not conform to the standards may be installed in hazardous locations based on a risk assessment to the satisfaction of the Administration, to ensure that an equivalent level of safety is assured. * Refer to the standards published by the International Electrotechnical Commission, IEC 60092-502:1999 Electrical installations in ships - Tankers. Interpretation Where the prescriptive requirements within SOLAS and related Codes (IBC, IGC) and the standards published by the International Electrotechnical Commission, such as but not limited to IEC 60092-502:1999, are not aligned, the prescriptive requirements in SOLAS and Codes take precedence and are to be applied. The differences revealed between the above-mentioned documents are listed in Annex 1. Note: 1. This Unified Interpretation is to be uniformly implemented by IACS Societies from 1 January 2017. 2. Rev.1 of this UI is to be uniformly implemented by IACS Societies on ship constructed
on or after from 1 July 2022.
SC 274 (Dec 2015) (Rev.1 Feb 2021)
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