This authorisation is required to install, remove, alter, repair, service, test and certify the gas system of a gas device (type B).
A gas device (type B) includes devices such as most industrial gas plant, some commercial gas devices, and fuel gas systems of vehicles or vessels.
There are 4 categories of gas work authority:
- Industrial appliances - authorises the holder to carry out gas work in relation to an industrial appliance, group of appliances or gas system.
- Servicing - authorises the holder to carry out gas work that involves repairing, servicing and testing a gas device (type B) of a type or group stated in the authorisation other than gas work carried out under a gas work authorisation (motor fuel) or that changes the design layout operating parameters of a gas system.
- Motor fuel - authorises the holder, to carry out gas work stated in the authorisation for a gas system that supplies fuel: to the engine of a vehicle or vessel; or to a stationary engine capable of consuming fuel gas at a rate of 5GJ/hr or less.
- Major project - authorises the holder to carry out gas work for a project to develop and build an operating plant, or part of a plant, if the total gas capacity of the devices at the plant, or the part of the plant, is 50GJ/hr or more.