scope:

This Standard applies to new locations, housings and compounds for gas supply meter installations (hereafter referred to as "installations" (and defined in IGEM/G/1)) of flow rate (capacity) exceeding 6 m3 h-1 and MOP upstream (MOPu) not exceeding 38 bar.

Note 1: For installations of capacity not exceeding 6 m3 h-1, intended to carry Natural Gas (NG), BS 6400-1 or BS 6400-2 apply, as appropriate for MOPu. For non-domestic premises there are additional legal requirements that may have to be met, e.g. DSEAR. The requirements of this document may be applied to installations of capacity not exceeding 6 m3 h-1 and MOPu exceeding 2 bar.

Note 2: For installations of MOPu exceeding 38 bar, IGE/GM/4 applies and IGEM/GM/8 Part 2 may be additionally applied.

Note 3: Principally IGEM/GM/8 has been produced for primary meters and other meters used for billing purposes. However, its principles may be applied for other meters, for example, appliance check meters or departmental charging meters, when certain requirements may not apply.

Note 4: IGEM/GM/6 provides procedures for "standard" installations of MOPu not exceeding 100 mbar. For other, "non-standard" installations of MOPu not exceeding 100 mbar, IGEM/GM/8 applies. See also the note within Sub-Section 1.4. 

This Standard applies to locations, housings and compounds for installations intended to carry NG (a 2nd family gas as defined by BS EN 437).

Note: The Gas Safety (Installation and Use) Regulations (GS(I&U)R) define "gas" to include 1st, 2nd and 3rd family gases as well as other gases. The principles of IGEM/GM/8 may be used for gases other than NG but suitable adjustments to parameters and requirements will need to be considered by a competent person. 

This Part 2 of IGEM/GM/8 deals with the selection of location and the design of bases, housings and compounds for relevant installations. 

All pressures are gauge pressures unless otherwise stated. 

Italicised text is informative and does not represent formal requirements. 

Appendices are informative and do not represent formal requirements unless specifically referenced in the main sections via the prescriptive terms "must", "shall" or "should".