You will need to comply with this standard if you intend to carry out gas-fitting work.
The standard specifies requirements for LP gas fuel systems for engines mounted on motor vehicles, either for the propulsion of the vehicles or for driving some auxiliary function, for example a mixer or a pump. It provides requirements for the design and construction of component parts and for their installation in vehicles, and for tests, commissioning and periodic inspection.
This standard may be amended from time to time.