Requirements for the construction and testing of electric surface heating devices when applied to metal surfaces. Requirements and recommendations for use in non-hazardous areas and in certain specific hazardous areas classified as Zone 1 and Zone 2 in accordance with BS 5345.
BS 6351-1:1983 history
2017BS EN 60079-30-1:2017 Explosive atmospheres. Electrical resistance trace heating. General and testing requirements
2007BS EN 60079-30-1:2007 Explosive atmospheres. Part 30-1: Electrical resistance trace heating. General and testing requirements
1983BS 6351-1:1983 Electric surface heating - Specification for electric surface heating devices