BS 6400-3-2007 最大容量不超过6m3/h煤气表的安装、调换、重新定位和拆除用规范.第3部分:低压和中压(第三类家用煤气)

标准号：BS 6400-3-2007
中文标准名称：*大容量不超过6m3/h煤气表的安装、调换、重新定位和拆除用规范.第3部分:低压和中压(第三类家用煤气)
英文标准名称：Specification for installation, exchange, relocation and removal of gas meters with a maximum capacity not exceeding 6 m3/h – Part 3: Low and medium pressure (3rd family gases)
标准类型：Q82
发布日期：1999/12/31 12:00:00
实施日期：2007/12/31 12:00:00
中国标准分类号：Q82
国际标准分类号：91.140.40
引用标准：BS 21;BS 476-7-1997;BS 746-2005;BS 5482-1;BS 7671;BS EN 1359;BS EN 13785;BS EN 14236;BS EN 60079-10;BS EN ISO 10806
适用范围：The standard specifies requirements for the installation, exchange,relocation and removal of credit or prepayment diaphragm andultrasonic gas meters with a maximum capacity not exceeding 6 m³/h.NOTE 1 For the purposes of this standard, installation includes design,inspection and commissioning. It is recognized that each of these tasks canbe performed by the same person.This part of BS 6400 is applicable to meter installations:a) supplied with 3rd family gases either:1) from low pressure service pipework with a maximumoperating pressure not exceeding 75 mbar and a designmaximum incidental pressure of 350 mbar; or2) from medium pressure service pipework with a maximumoperating pressure exceeding 75 mbar but not exceeding 2 barand a design maximum incidental pressure of 2.7 bar;b) only fitted downstream of the emergency control valve;c) that utilizes a meter regulator downstream of the emergencycontrol valve;d) where all gas fittings subjected to medium pressure have beenpre-assembled and where strength and gas tightness testing hasbeen undertaken on the regulator assembly at the factory;e) where the operating pressure at the outlet of the meter isnominally 37 mbar.Installation pipework is specified in BS 5482-1 and LPGA Code ofPractice 25 [14].Service pipework (including the first emergency control valve) isspecified in BS 5482-1 and the LPGA Code of Practice 22 [15] andLPGA Code of Practice 25 [14].This standard does not cover pressure regulating installations installedin a service pipework upstream of the emergency control valve.