ANSI B16.41-1983 Functional Qualification Requirements for Power Operated Active Valve Assemblies for Nuclear Power Plants
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FA625C66ACE54C029892C2F5C8C57995 |
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文件大小(MB)： |
2.1 |
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页数： |
30 |
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日期： |
2024-6-22 |
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第;不ークO％3「二,AMERICAN NATIONAL STANDARD,二丒忘11r. 扌,Functional Qualification Requirements,若.for Power Operated Active： Mal ve,I' Assemblies for Nuclear Power Plants,ANSI B16,41 - 1983,ゝ9区” *“生,逬延漕,ェ丒つ J,ホ;,三 PUBLISHED BY,[THE AMERICAN SOCIETY O F MECHANICAL ENGINEERS,^United Engineering Center,B-? 」」,率 ，」「,345 East 47th Street New York, N.Y. 10017,ノク,ゴエ,Date of Issuance: July 15,1983,This code or standard was developed under procedures accredited as meeting the criteria for,American National Standards. The Consensus Committee that approved the code or standard was,balanced to assure that individuals from competent and concerned interests have had an opportunity,to participate. The propose code or standard was made available for public review and comment,which provides an Opportunity for additional public input from industry, academia, regulatory *agen,ctes, and the public-at-lar^e.,ASME does not “approve；' "rate," or "endorse“ any item, construction, proprietary device, or,activity.,ASME does not take any position with respect to the validity of any patent rights asserted in,connection with any items mentioned in this document, and does not undertake to insure anyone,utilizing a standard against liability for infringement of any applicable Letters Patent, nor assume any,such liability. Users of a code or standard are expressly advised that determination of me validity of,any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.,Participation by federal agency representative(s) or person(s) affiliated with industry is not to be,interpreted as government or industry endorsement of this code or standard.,Nd part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without me prior written permission of tfie publisher.,ヘゴ …Copyright . 1983 by,THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS,鼠"二 All Righu Reserved,1 " Printed in U.S.A.,FOREWORD,(This Foreword is not a part of American National Standard, Functional Qualifications Requirements for,Power Operated Active Valve Assemblies for Nuclear Power Plants, ANSI B16.41.),This Standard is one of a series of power plant equipment standards provided to assure that equipment will,function as specified. The Standard was developed under sponsorship of the American Society of Mechanical,En^neers (ASME). Its development was initiated by the American National Standards Committee N45 on,Reactor Hants and Their Maintenance. In October, 1972, the N45 Committee established a task force to prepare,a series of standards to assure that valves would function as specified. In 1974, the task force was reassigned,to American National Standards Committee Bl 6 and designated Subcommittee H.,Power operated active valve assemblies are required to perfonn their functions under specified operating,conditions- It is the purpose of the series of standards on active valves to provide requirements for:,(1) the preparation of Functional Specifications;,(2) the qualification of the design of valves, actuators, and the combination thereof (valve assemblies) by,test and analysis for the intended service; and,(3) production testing of valve assemblies manufactured for specific applications.,The purpose of the foregoing is to provide assurance that the valve assemblies in service will function as,required under all specified operating conditions. Only those conditions considered to uniquely affect the,operability of valve-actuator combination 侬 opposed to either the valve or actuator alone) are developed,within ANSI B16.4L Integrity of the pressure retaining boundary of the valve, covered by codes developed by,the ASME Bofler and Pressure Vessel Committee, is excluded from the scope of this Standard.,The first standard to be issued in the series is ANSI N278.1-1975, which covers the preparation of Functional,Specifications.,This Standard provides a method for qualification of power operated active valve assemblies that will provide,an acceptable level of assurance of functional operability. This qualification is based on tests demonstrating the,ability of the valve assembly to perform its function under extreme adverse conditions of pressure, mechanical,loading, flow dynamics, temperature, and vibration. The testing involves imposition of certain of these conditions,in combination, and others individually, all exceeding maximum levels expected in service. It is recognized,that in the extremity of certain adverse plant events involving need for valve operation, loading combinations,not specifically tested in this qualification may be imposed on valves. The adverse effects of such co……
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