BS 229:1957被替代

Electrical apparatus enclosures for use in flammable or explosive gases or vapours. Design and construction, tables the grouping of gases and vapours and the corresponding permissible gap dimensions for flanged joints. Treatment of control spindles , shafts, conductors, etc. Appendices detail requirements for certification as flameproof. (See also BS 5501-5).

© British Standards Institution 2013

Amendment notes:
AMD 1610 published 01 July 1974
AMD 359 published 15 October 1969
AMD 5224 published 31 March 1987
PD 2958 published 15 January 1958
PD 3002 published 15 April 1958
PD 3247 published 15 December 1958
PD 3543 published 15 October 1959
PD 4908 published 15 May 1963
PD 6162 published 15 May 1967

BS 4683-2:1971