Plant Indentification Tool
By Trevor Hoath SGN
May 2014
Southern Gas Networks has used various descriptions of road and footway boxes over the years. They do not always have the words gas printed on them. The gas network comprises of low, medium and high pressure networks, each with their own risks.
All these systems will have a variety of the boxes shown and used for different reasons. It could be a service valve for domestic properties or a box to operate strategic valves for managing the network in an emergency or to support various planned operations. They can also be used for accessibility of pressure points and isolation points for pressure reducing installations.