BS 6755-2 1987
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ID： |
F191B7B063AD49659E6518DB43002BAC |
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文件大小(MB)： |
0.24 |
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页数： |
20 |
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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 6755-2:,1987,Reprinted,incorporating,Amendment No. 1 and,No. 2,Testing of valves —,Part 2: Specification for fire,type-testing requirements,UDC 621.646[620.1:532.11]:614.84,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 15 09:08:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 6755-2:1987,This British Standard, having,been approved 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 July 1987,. BSI 12-1998,The following BSI references,relate to the work on this,standard:,Committee reference PSE/7,Draft for comment 86/73183 DC,ISBN 0 580 16061 0,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,British Chemical Engineering Contractors’ Association,British Compressed Gases Association,British Fluid Power Association,British Foundry Association,British Gas plc,British Maritime Technology,British Shipbuilders,British Valve Manufacturers’ Association Ltd.,Copper Development Association,Copper Tube Fittings Manufacturers’ Association Ltd.,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,6272 November,1990,6712 June 1991 Indicated by a sideline in the margin,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 15 09:08:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 6755-2:1987,. BSI 12-1998 i,Contents,Page,Committees responsible Inside front cover,Foreword ii,Section 1. General,1 Scope 1,2 Definitions 1,Section 2. Conditions of test,3 Direction and conditions for valves to be tested 2,4 Pressure relief provision 2,Section 3. Performance,5 General 3,6 Through-seat leakage (high test pressure) during,burn period 3,7 External leakage (high test pressure) during burn,and cool-down periods 3,8 Through-seat leakage (low test pressure) after cool-down 3,9 External leakage (low test pressure) after cool-down 3,10 Operability 3,11 External leakage in fully open position 3,Appendix A Fire test method 4,Appendix B Qualification of valves by representative size,and pressure rating 10,Appendix C Additional information to be included in the,test report 12,Figure 1 — Recommended systems for fire type-testing of,valves (schematic) 5,Figure 2 — Calorimeter cube design and dimensions 6,Figure 3 — Location of calorimeter cubes and flame,environment thermocouples for DN 150 (NPS 6) and,smaller size valves 8,Figure 4 — Location of calorimeter cubes and flame,environment thermocouples for valves larger than,DN 150 (NPS 6) 8,Table 1 — Test pressures for PN and Class rated valves 7,Table 2 — Other valves qualified according to size 11,Table 3 — Other valves qualified by PN rating 11,Table 4 — Other valves qualified by Class rating 11,Publications referred to Inside back cover,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Jul 15 09:08:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 6755-2:1987,ii . BSI 12-1998,Foreword,This British Standard has been prepared under the direction of the Piping,Systems Components Standards Committee and is published in two Parts:,— Part 1: Specification for production pressure testing requirements;,— Part 2: Specification for fire type-testing requirements.,This Part of BS 6755 embodies the technical content of API Specification 6FA for,fire type-testing of valves, including valves to API Specification 6D, and of API,Standard 607, published by the American Petroleum Institute (API), but differs,in presentation. It covers the requirements for testing and method of test for,evaluating the performance of valves when exposed to defined fire conditions. The,performance requirements are intended to establish limits of acceptability of a,valve regardless of size, nominal pressure (PN) or Class rating. The burn period,……
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