The Gas Safety (Installation and Use) Regulations 1998, (GSIUR) deal with the safe installation, maintenance and use of gas systems. This includes gas fittings, appliances and flues, that are mainly in domestic and commercial premises, such as offices, shops, public buildings and similar places. They generally apply to any ‘gas’ as defined in the Gas Act 1986 (amended by the Gas Act 1995), apart from gas that is wholly or mainly hydrogen, when it is used in non-domestic premises. The Regulations' requirements include both natural gas and liquefied petroleum gas (LPG).
