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  • BSI
    BS 6704:1996 Code of practice for selection, installation and maintenance of intrinsically safe electrical equipment in coal mines
    Edition: 1996
    $442.50
    / user per year

Description of BS 6704:1996 1996

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.



Includes inspection, testing, maintenance and repair, and competence of personnel in respect of safe practice.

Standard NumberBS 6704:1996
TitleCode of practice for selection, installation and maintenance of intrinsically safe electrical equipment in coal mines
StatusConfirmed
Publication Date1996-11-15
ReplacesBS 6704:1987
DescriptorsRepair, Approval organizations, Installation, Type i protected electrical equipment, Electric cables, Explosive atmospheres, Certification (approval), Personnel, Marking, Maintenance, Standards, Coal mining, Temperature-rise limit, Electric cells, Mining equipment, Inspection, Electrical equipment, Protected electrical equipment, Technical regulations, Electrical safety, Electrical testing, Occupational safety, Earthing, Selection, Remote control systems, Multicore cables
ICS29.260.20 Electrical apparatus for explosive atmospheres
CommitteeW/-
ISBN0 580 25195 0
PublisherBSI
Pages24



About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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