The Gas Safety (Installation and Use) Regulations 1994

means any main through which a supplier or a transporter is for the time being distributing gas and which is not being used only for the purpose of conveying gas in bulk;

means a valve (not being a service valve) for shutting off the supply of gas in an emergency;

means a passage for conveying the products of combustion from a gas appliance to the external air and includes any part of the passage in a gas appliance duct which serves the purpose of a flue;

means a pipe forming a flue but does not include a pipe built as a lining into either a chimney or a gas appliance ventilation duct;

means any substance which is or (if it were in a gaseous state) would be gas within the meaning of the Gas Act 1986;

means an appliance designed for use by a consumer of gas for heating, lighting, cooking or other purposes for which gas can be used, but, save for the purposes of regulations 3 and 35 of these Regulations, it does not include a portable or mobile appliance supplied with gas from a cylinder, or the cylinder, pipes and other fittings used for supplying gas to that appliance;

means gas pipework, valves, regulators and meters, and fittings, apparatus and appliances designed for use by consumers of gas for heating, lighting, cooking or other purposes for which gas can be used (other than the purpose of an industrial process carried out on industrial premises), but it does not mean— (a) any part of a service pipe;

means a storage container designed to be filled or re-filled with gas at the place where it is connected for use or a re-fillable cylinder designed to store gas, and includes the vapour valve;

means any pipework for conveying gas for a particular consumer and any associated valve or other gas fitting, but it does not mean— (a) a service pipe;

means a receptacle or compartment designed and constructed to contain a meter with its associated fittings;

means any pipe and other gas fittings used in connection with it through which gas can be conveyed from a service pipe or service pipework to installation pipework without passing through the meter;

means an area or room designed and constructed to contain one or more meters with their associated fittings;

means a gas fitting to which a pressure gauge can be connected.

means a meter connected to a service pipe or service pipework for ascertaining the quantity of gas supplied through that pipe or pipework;

means a primary meter and the pipes and other gas fittings used in connection with it, including any meter by pass, installed between the outlet of the emergency control and the outlet connection of the meter or the outlet of the common connection of the meter and any meter by pass or any other primary meter as the case may be;

has the meaning assigned to it by section 48(1) of the Gas Act 1986;

means an appliance whose combustion system is sealed from the room in which the appliance is located and which obtains air for combustion from a ventilated uninhabited space within the premises or from the open air outside the premises and which vents the products of combustion to open air outside the premises;

means a meter, other than a primary meter, for ascertaining the quantity of gas provided by a person for use by another person, whether or not there is also a primary meter in respect of the gas supplied.

means a pipe for supplying gas to premises from a distribution main, being any pipe between the distribution main and the emergency control nearest upstream to the primary meter;

means a pipe for supplying gas to premises from a gas storage vessel, being any pipe between the gas storage vessel and the outlet of the emergency control;

means a valve for controlling a supply of gas incorporated in a service pipe and not situated inside a building;