TS 11939

TS 11939 is a safety standard for automotive LPG refuelling stations. Its technical focus is the safe layout, equipment arrangement, and operating precautions needed when liquefied petroleum gas is delivered into motor vehicles. Because LPG is a pressurised, flammable fuel, the core issue is controlling release, ignition, and accumulation hazards within the refuelling environment.

The standard covers the organisational and safety requirements for stations used to supply LPG to road vehicles. In general engineering terms, that means the station must be considered as a complete safety system: storage, piping, dispensers, electrical protection, ventilation, fire protection, and the management of hazardous areas all interact. For LPG service stations, even a small leak can create a vapour cloud, so site arrangement and equipment selection are central to safe operation.

How LPG refuelling safety is understood in practice

LPG is typically stored as a liquid under pressure and becomes a flammable vapour when released. In practical safety design, that means the installation must control pressure-related behaviour, minimise leakage points, and keep potential ignition sources away from areas where gas may be present. The referenced standards linked to this document point to related subjects such as pressure vessels, gas installation components, fire protection, and electrical equipment for explosive atmospheres.

What this document covers, and what it does not

• It is aimed at LPG refuelling stations for road vehicles, not at every type of fuel station.
• It addresses station establishment and safety requirements rather than commercial operations.
• It should be read alongside related standards for LPG equipment, fire protection, and hazardous-area electrical practices.
• This listed edition is withdrawn, but it remains useful as a technical reference for the subject area.