Gas

Gas Transporter Procedures

Legislation, industry codes and standards place responsibilities on the Networks to provide authoritative control and guidance over certain meter related activities. The following procedures outline what these duties are and detail how the requirements of the procedures shall be met. 

For further information please contact your relevant Gas Distribution Network Operator


The procedures are as follows:

GDN/PM/GT1 - Management Procedure for Requesting Gas Service Pipe Pressures and Capacity Information

The Gas Safety (Management) Regulations 1996, Regulation 6(8) places a duty on a person conveying gas in a Network to “where he is requested to do so by a person proposing to carry out work in relation to a gas fitting, provide him with information about the operating pressures of the gas at the outlet of a service pipe”.

Whilst this regulation is applicable to persons undertaking work downstream of the emergency control valve (ECV), which terminates the end of a gas supply pipe, for example when intending to install a gas supply meter installation, there are other categories of work such as work on service pipes when the provision of information about the operating pressure of gas is also important.

This procedure outlines how the information should be requested and provides the documents required.

Please click here for documents.

GDN/PM/GT2 - Management Procedure for Requesting a Gas Transporter to:

  • Authorise the setting and sealing of regulators.
  • Authorise the installation of a meter by-pass.
  • Approve a meter housing design.

The Gas Safety (Management) Regulations 1996 place a duty on a Gas Transporter (GT) to ensure that gas is at a suitable pressure to ensure the safe operation of any appliance that a consumer could reasonably expect to operate.

The Gas Safety (Installation and Use) Regulations 1998 requires that the person who installs or adjusts a regulator shall ensure that it is adequately sealed. This seal is to prevent the setting from being adjusted or interfered with. No person except the GT or a person authorised to act on his behalf shall break the seal applied to the regulator.

The HSE have considered that the Gas Safety (Management) Regulations 1996 should be taken as meaning that a GT is deemed to have ‘control of the meter regulator’. This should ensure the integrity of the system downstream of the meter regulator, and as far as reasonably practical, ensure that the downstream system is supplied with a satisfactory pressure to ensure the safe combustion of gas at a gas appliance.

The Unified Network Code requires that following approval by a Gas Shipper, the provision and use of a meter by-pass shall be approved by the GT.

The Gas Act 1986 (As amended) requires that where a meter is to be installed in a meter house, the type and construction of the meter house shall be approved by the GT. Failure to obtain approval could result in the GT refusing to connect, or as the case maybe, disconnect the gas supply to the consumer’s premises.

Where a meter installation is or is intended to be connected to a network operated by a GT, ‘Authorisation’ applies to any activity associated with the;

  • Initial setting of a regulator, sealing or breaking a seal and adjustment of a regulator and any associated pressure control or protection devices.
  • Installation of a meter by-pass.
  • Design of meter housing.

This procedure provides details on how to make applications and shall be used by a Meter Asset Manager (MAM) to request an Authorisation.

Please click here for documents.

GDN/PM/GT4 - Management Procedure for Sealing of Equipment to Protect Against Theft of Gas and Tampering

This procedure is for use by Registered Users of the Uniform Network Code, independent Gas Transporters’ (iGT) Uniform Network Code (UNC) and their representatives.

This procedure specifies acceptable means to achieve the “isolation” of the Supply Meter Point under the terms of the UNC, section G and appropriate section of the iGT UNC.

The supply of gas at a meter installation may cease under the terms of the Network Code or under Schedule 2B of the Gas Act 1986 as amended 1995. The terms under which a supply of gas may cease are:

  • Discontinuance – An act by a gas supplier as a means of stopping the flow of gas at a gas supply meter point.
  • Disconnection – An act by a GT to ensure that gas cannot be off-taken through a supply meter point.

The options detailed in this procedure provide an acceptable means to protect against the theft of gas and tampering in both domestic and non-domestic installations and are acceptable to the GTs.

Adherence to this procedure is a precondition of amending the Supply Point Register to set the status of the Supply Meter Point to “isolated” in accordance with the requirements of the relevant GTs.

For further information please contact your relevant Gas Distribution Network Operator

Please click here for documents.