BS 6755-1 1986
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ID： |
4FB890B6C8B34E69ABC249361C38B88B |
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文件大小(MB)： |
0.14 |
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页数： |
18 |
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文件格式： |
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日期： |
2013-6-1 |
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文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
BRITISH STANDARD BS 6755-1:,1986,Testing of valves —,Part 1: Specification for production,pressure testing requirements,UDC 621.646:[620.1:532.11],Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 15 09:08:15 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 6755-1:1986,This British Standard, having,been prepared under the,direction of the Piping,Systems Components,Standards Committee, was,published under the authority,of the Board of BSI and comes,into effect on,31 December 1986,. BSI 12-1998,The following BSI references,relate to the work on this,standard:,Committee reference PSE/7,Draft for comment 85/75573 DC,ISBN 0 580 15479 3,Committees responsible for this,British Standard,The preparation of this British Standard was entrusted by the Piping Systems,Components Standards Committee (PSE/-) to Technical Committee PSE/7,upon which the following bodies were represented:,Amalgamated Union of Engineering Workers,Associated Offices Technical Committee,Association of Bronze and Brass Founders,Association of Hydraulic Equipment Manufacturers,British Chemical Engineering Contractors’ Association,British Compressed Gases Association,British Foundry Association,British Gas Corporation,British Maritime Technology,British Shipbuilders,British Valve Manufacturers’ Association Ltd.,Copper Development Association,Copper Tube Fittings Manufacturers’ Association,Electricity Supply Industry in England and Wales,Energy Industries Council,Engineering Equipment and Materials Users’ Association,GAMBICA (BEAMA Ltd.),General Council of British Shipping,Health and Safety Executive,Institute of British Foundrymen,Institution of Chemical Engineers,Institution of Gas Engineers,Institution of Mechanical Engineers,Institution of Water Engineers and Scientists,Society of British Gas Industries,Steel Casting Research and Trade Association,Water Authorities’ Association,Water Companies’ Association,Amendments issued since publication,Amd. No. Date of issue Comments,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 15 09:08:15 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 6755-1:1986,. BSI 12-1998 i,Contents,Page,Committees responsible Inside front cover,Foreword ii,Section 1. General,1 Scope 1,2 Definitions 1,Section 2. Performance,3 General 2,4 Pressure-containing capability of valve shell 2,5 Butterfly valve disk strength 2,6 Seat leakage 2,7 Back seat leakage 2,8 Test certificate 2,Appendix A Equivalent leakage rates 4,Appendix B Test durations 4,Appendix C Equivalent sizes of valves having flanged ends,threaded ends, weld ends and capillary or compression ends 5,Appendix D Pressure tests 5,Table 1 — Maximum permissible seat test leakage rates 3,Table 2 — Maximum permissible back seat test leakage rates 3,Table 3 — Equivalent leakage rates 4,Table 4 — Test durations 4,Table 5 — Equivalent sizes of valves 5,Publications referred to Inside back cover,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 15 09:08:15 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 6755-1:1986,ii . BSI 12-1998,Foreword,This Part of BS 6755 has been prepared under the direction of the Piping Systems,Components Standards Committee. BS 6755 is published in two Parts:,— Part 1: Specification for production pressure testing requirements;,— Part 2:1) Specification for fire type-testing requirements.,This Part of BS 6755 will supersede BS 5146-1 and BS 5146-2 and is related to,ISO 5208-1982, published by the International Organization for Standardization,(ISO), but is not equivalent in technical content. The main differences are as,follows.,a) Pressure test requirements specified in BS 5146-1 have been included in this,Part of BS 6755 which are not specified in ISO 5208.,b) More details of the test methods are given in this Part of BS 6755.,c) Maximum allowable leakage rates for the seat and back seat tests are,designated differently to ISO 5208 and BS 5146-2 and therefore a table of,equivalent leakage rates is given in appendix A.,d) The minimum durations for pressure tests do not necessarily comply with,ISO 5208; the actual test durations are given in the valve product standards.,e) For guidance, a table of test durations is given in appendix B and may be,used where an appropriate valve product standard does not exist or where test,times are not specified in a standard.,f) For comparison and information, a table of equivalent sizes of valves having,different ends is given in appendix C.,This Part of BS 6755 establishes the basic requirements and methods for the,production pressure testing of valves. It revises the production pressure testing,……
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