BS 6400-1:2016 specifies requirements for the installation, exchange, relocation, maintenance and removal of credit or prepayment diaphragm and ultrasonic gas meters with a maximum capacity not exceeding 6 m^/h.

NOTE 1 For the purposes of this British Standard, installation includes design, inspection and commissioning. It is recognized that each of these tasks can be performed by the same person.

This part of BS 6400 is applicable to primary and secondary meter installations:

• supplied with 2nd family gases from low pressure gas distribution systems with a maximum operating pressure not exceeding 75 mbar, a design minimum pressure of 19 mbar and a design maximum incidental pressure of 200 mbar;
• fitted downstream of the emergency control valve;
• that utilize a primary meter regulator downstream of the emergency control valve;
• where the operating pressure at the outlet of the meter is nominally 21 mbar.

NOTE 2 Low pressure gas networks in Great Britain operate with a maximum operating pressure not exceeding 75 mbar, a design minimum pressure of 19 mbar and a design maximum incidental pressure of 200 mbar.

NOTE 3 Installation pipework is specified in BS 6891.

NOTE 4 Service pipes (including the emergency control valve) are specified in the Institution of Gas Engineers and Managers' publication on gas services, IGE/TD/4 [18].

NOTE 5 All pressures quoted in this standard are gauge pressures and all pressure absorption values are for natural gas unless otherwise specified.

NOTE 6 Additional guidance on domestic gas systems can be found in BS EN 1775, BS EN 1776 and BS EN 12279.

NOTE 7 Additional guidance on gas installations in multi-occupancy buildings is given in IGEM/G/5.


Cross References:
BS 21
BS 476-7:1997
BS 746:2014
BS 6891:2015
BS 7671
BS 8499
BS EN 1359
BS EN 14236
BS EN 60079-10-1
IGEM/GM/7B:2008
IGEM/SR/25:2010
IGEM/GM/7A:2008
PRS 1/E:2002
PRS 3/E:2004
PRS 6/E:2004
IGEM/G/5:2012
IGEM/UP/1B:2012
BS 4161-3
BS 4161-5
BS 4781
BS 6004
BS 6231
BS EN 437
BS EN 1775
BS EN 1776
BS EN 12279
BS EN 50525
PD CEN/CLC/ETSI TR 50572:2011
OFGEM COP/1a:1998
Gas Safety (Installation and Use) Regulations 1998
Gas Safety (Installation and Use) Regulations
(Northern Ireland) 2004
Gas Safety (Installation and Use) Regulations 1994
Gas Meters (Information on Connection and
Disconnection) Regulations 1996
Gas Safety (Management) Regulations 1996
Gas Safety (Management) Regulations (Northern Ireland)
1997
Gas (Meters) Regulations 1983
Building Regulations 2010 (England and Wales)
Building (Scotland) Regulations 2004
Building Regulations (Northern Ireland) 2012
Measuring Instruments (EEC Requirements) (Gas Volume
Meters) Regulations 1988
Measuring Instruments (Gas Meters) Regulations 2006
Dangerous Substances and Explosive Atmosphere
Regulations 2002
Gas (Calculation of Thermal Energy) Regulations 1996
2004/22/EC
2014/32/EC
IGE/TD/4:2007
IGEM/G/4:2012
IGEM/G/1:2013
Gas Act 1986
Health and Safety (Gas) (Guernsey) Ordnance No. XIV
2006
IGEM/IG/1:2014
Dangerous Substances and Explosive Atmospheres
Regulations 2002
IGEM/GM/6:2011


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