BS 6704:1996 Code of practice for selection, installation and maintenance of intrinsically safe electrical equipment in coal mines
Current
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This British Standard describes the concept of ensuring
electrical safety in hazardous atmospheres in coal
mines by means of the type of protection `i' (intrinsic
safety), provides background information and gives
recommendations on the selection, installation,
inspection and testing, and maintenance and repair of
intrinsically safe electrical apparatus, systems and
networks.
Electrical safety of apparatus installed outside the hazardous atmosphere, or which is safeguarded by a
type of protection other than intrinsic safety, is also considered in so far as the selection, installation and maintenance of such apparatus could affect intrinsically safe circuits. Only explosion risks due to
the presence of flammable gases and vapours are considered. Combustible dusts are excluded except for
coal dust layers which could be ignited by elevated surface temperatures. Design or performance aspects of intrinsically safe apparatus pertinent to operational safety are not considered.
Primary Item Type:
British Standard
Identifiers:
ICS 29.260.20
ISBN 0580251950
Language:
English
Subject Keywords:
Repair; Approval organizations; Installation; Type i protected electrical equipment; Electric cables; Explosive atmospheres; Certification (approval); Personnel; Marking; Maintenance
