BS 6400-2:2018 Specification for installation, exchange, relocation, maintenance and removal of gas meters with a maximum capacity not exceeding 6 m3/h. Medium pressure (2nd family gases)

BS 6400-2:2018

Specification for installation, exchange, relocation, maintenance and removal of gas meters with a maximum capacity not exceeding 6 m3/h. Medium pressure (2nd family gases)

Status : Current   Published : December 2018

Format
PDF

Format
HARDCOPY



What is this standard about?

It exists to help gas meter installers meet the requirements of 16 UK and European regulations, including the Gas Safety (Installation and Use) Regulations. It’s been updated to align with the UK Government’s mandate for the installation of gas smart meters in all homes by 2020.

Who is this standard for?

It will be used by gas meter installers and a range of other professionals within the gas industry, including:

  • Training establishments providing gas industry courses
  • Consultants
  • Architects
  • Specifiers
  • Meter and meter installation component manufacturers
  • Housebuilders

Why should you use this standard?

It 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 m³/h.

This part of BS 6400 applies to primary meter installations:

a)       Supplied with 2nd family gases from medium pressure gas distribution systems with a maximum operating pressure exceeding 75 mbar but not exceeding 2 bar and with a design maximum incidental pressure of 2.7 bar

b)      Only fitted downstream of the emergency control valve

c)       That utilize a pressure control and protection system contained within a regulator assembly that is downstream of the emergency control valve

d)      Where all gas fittings subjected to medium pressure have been pre-assembled and where strength and gas tightness testing has been undertaken on the regulator assembly at the factory

e)      Where the operating pressure at the outlet of the meter is nominally 21 mbar.

Installation, exchange, relocation and removal of a secondary meter with a maximum capacity of 6 m³/h is specified in BS 6400-1. Installation pipework is specified in BS 6891. Service pipes (including the emergency control valve) are specified in the Institution of Gas Engineers and Managers’ publication on gas services, IGE/TD/4.

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

NOTE 2: Medium pressure gas networks in Great Britain operate with maximum operating pressure in the range of 75 mbar or greater but not exceeding 2 bar with a design maximum incidental pressure of 2.7 bar.

NOTE 3: All pressures quoted in this standard are gauge pressures and all pressure absorption values are for natural gas unless otherwise specified.

NOTE 4: Additional guidance on domestic gas systems can be found in the European functional standards BS EN 1775 and BS EN 12279.

What’s changed since the last update?

The UK Government has mandated the installation of gas smart meters in all homes by 2020. The standard was revised to add a section on maintenance activities in line with this mandate. In addition:

  • Normative references have been changed to include updated British Standards such as BS 8499:2017 Specification of domestic gas meter boxes and meter bracket
  • Previous inconsistencies, including the commentary to sub-clause 12.1 which contradicted sub-clause 21.1, have been resolved



Standard NumberBS 6400-2:2018
TitleSpecification for installation, exchange, relocation, maintenance and removal of gas meters with a maximum capacity not exceeding 6 m3/h. Medium pressure (2nd family gases)
StatusCurrent
Publication Date13 December 2018
Normative References(Required to achieve compliance to this standard)BS 476-7:1997, BS 6400-1:2016, BS 6891:2015, BS 746:2014, BS EN 10226-2, BS EN ISO 10806, BS EN 1359, BS EN 10226-1, BS 1553-1, BS EN 331, BS 21, BS EN 14236, BS EN 60079-10-1, BS 8499, BS 7671
Informative References(Provided for Information)Gas Safety (Installation and Use) Regulations 1998, Gas Safety (Installation and Use) Regulations (Northern Ireland) 2004, BS 4781, Gas Act 1986, Building Regulations 2000, Measuring Instruments Regulations 2016, BS 6231, Building Regulations (Northern Ireland) 2000, Gas Safety (Management) Regulations 1996, BS EN 1057, Gas Safety (Application) Order (Isle of Man) 1996, BS EN 12279, Gas (Meters) Regulations 1983, BS EN 50525 (all parts), BS EN 437, Building (Scotland) Regulations 2004, Gas Meters (Information on Connection and Disconnection) Regulations 1996, BS EN 1775, Gas Safety (Management) Regulations (Northern Ireland) 1997, Measuring Instruments (Gas Meters) Regulations 2006, Dangerous Substances and Explosive Atmospheres Regulations (DSEAR) 2002, BS 6400-3, BS 6004, BS EN 1776, BS 4161-5:1990, BS 4161-3:1989
ReplacesBS 6400-2:2006
Draft Superseded By18/30362197 DC
DescriptorsGas-supply meters, Size, Volume flowmeters, Buildings, Position, Control devices, 2nd family gases, Pressure, Installation, Safety measures, Domestic, Exchange, Flow rates, Flowmeters
ICS91.140.40
CommitteeGSE/30
ISBN978 0 580 98922 3
PublisherBSI
FormatA4
DeliveryYes
Pages74
File Size3.396 MB
Price£274.00


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