Standards Development

Scope

This document 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 specifies requirements such as those concerning

–        hazardous area classification,

–        electrical systems,

–        design, selection and installation 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 non-electrical ignition sources.

–        electrical installations in explosive dust areas

NOTE 1 For medical rooms, IEC 60364-7-710 provides specific requirements.

NOTE 2 Requirements for tankers are given in IEC 60092-502.

NOTE 3 Guidance on protection of non-electrical equipment can be found in ISO 80079-36, ISO 80079-37 and IMO 2009 MODU Code, 6.7

NOTE 4 Classification of explosive dust atmospheres are given in IEC 60079-10-2.

NOTE 5 The general principles for hazardous area classification are given in IEC 60079-10-1. IEC 61892-7 gives an interpretation of the principles when used for area classification of mobile and fixed offshore units.