Takes account of developments in technology, and of the introduction of natural gas and the interpretation of certain terms included in the Gas Safety Regulations 1972. Adds new terms and redefines some others relating to combustion; controls; domestic, commercial and industrial utilization; lighting; installation at consumers' premises; conversion; appliance parts.Cross References:BS 1362BS 4947Gas Safety Regulations 1972Partially replaces BS 1179:1967.