RA-S_Addn-a_2009.pdf

ASME/ANS RA-Sa2009Addenda toASME/ANS RA-S2008Standard forLevel 1/Large EarlyRelease FrequencyProbabilistic RiskAssessment forNuclear Power PlantApplicationsAN AMERICAN NATIONAL STANDARDA01531Copyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-at-large.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 anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assumes any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2009 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME/ANS RA-Sa2009Following approval by the ASME/ANS RA-S Committee and ASME,and after public review,ASME/ANS RA-Sa2009 was approved by the American National Standards Institute onFebruary 2,2009.Addenda to the 2008 edition of ASME/ANS RA-S are issued in the form of replacement pages.Revisions,additions,anddeletionsareincorporateddirectlyintotheaffectedpages.Itisadvisable,however,that this page,the Addenda title and copyright pages,and all replaced pages be retainedfor reference.SUMMARY OF CHANGESThis is the first Addenda to be published to ASME/ANS RA-S2008.This Standard has beenrevised in its entirety.Replace or insert the pages listed.Changes given below are identified on the pages by a margindesignator,(a),placed next to the affected area.PageLocationChangeiii,iii.1ContentsUpdated to reflect Addenda1Part 1Revised in its entirety40Part 2Revised in its entirety115Part 3Revised in its entirety131Part 4Revised in its entirety215Part 5Added257Part 6Added271Part 7Added286Part 8Added301Part 9Added315Part 10AddedSPECIAL NOTE:The Interpretations to ASME/ANS RA-S,volume 2,are included in this addenda beginning withpage I-5 for the users convenience.(c)Copyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.INTENTIONALLY LEFT BLANK(d)Copyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivPreparation of Technical Inquires to the Committee on Nuclear Risk Management.vCommittee Roster.viPreface.viiiPART 1GENERAL REQUIREMENTS FOR A LEVEL 1 PRA,INCLUDING LARGE EARLYRELEASE FREQUENCY.1Section 1-1Introduction.1Section 1-2Acronyms and Definitions.8Section 1-3Risk Assessment Application Process.20Section