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1、核电站安全端异种金属焊缝超声检查技术研究综述陈怀东，肖学柱，李明，刘金宏屮广核检测技术有限公司苏州分公司江苏省苏州市西环路1788号，苏州215004Tel:0512-68602501；Fax:0512-68602057Email：chenhuaidong@cgnDC.com.cn摘要：安全端杲种金属焊缝在寿期内的结构完整性对于核电站的安全运行来说是至关重要的。奥氏体粗晶材料的存在以及焊缝几何结构的复杂性使得异种金属焊缝的检查非常'具有挑战性。本文概述了核屯站异种金属焊缝超声检查相关的内容，包括检查的技术要求、国
2、际检杳技术特点、检杳技术的局限性、针对缺陷检杳的可靠性以及检查资格认证等方面。国际上开展的系列理论和实验研究表明，针对异种金屈焊缝检查的可靠性有待继续捉高，对焊缝和预堆边材料中缺陷的准确检查和可靠评价目前还存在一定困难，需要在新方法和新技术的应用方面继续进行深入研究。关键词:核电站，异种金属焊缝，超声检查，检查认证ReviewofResearchonUltrasonicExaminationTechnologyofSafe-endDissimilarMetalWeldofNPPHuaidongCHEN,Xuezh
3、uXIAO,MingLI,JinhongLIUSuzhouBranch,CGNPCInspectionTechnologyCompany(CITEC)1788XihuanRoad,Suzhou215004,P.R.ChinaTel：0512-68602501；Fax:0512-68602057Email：chenhuaidong@cgnpc.com.cnABSTRACT：Thestructuralintegrityofsafe-enddissimilarmetalweld(DMW)duringthelifetim
4、eisofsignificancetothesafetyoperationofnuclearpowerplant.TheausteniticcoarsegrainmaterialandcomplexgeometryconfigurationofDMWweldmaketheexaminationofdissimilarmetalweldverychallenging.Inthispapertheultrasonicexaminationtechniqueofdissimilarmetalweldisreviewed
5、andsummarized,includingcodeinspectionrequirement,techniquecharacteristicoftheabroadvendor,limitationofinspectiontechnique,reliabilityandinspectionqualificationetc.Theseriesoftheoreticalandexperimentalresearchshowedthattheinspectionreliabilityofdissimilarmetal
6、weldcouldbeimprovedcontinuallyanditseemsalittledifficultforaccurateexaminationandreliableevaluationfordefectlocatedatpositionbetweentheweldandbuttering,whichrequirefurtherthoroughtheoreticalresearchandapplicationofnewmethodandtechnique・KEYWORD：Nuclearpowerpla
7、nt.Dissimilarmetalweld^Ultrasonicexamination.InspectionqualificationAuthorIntroduction:Dr.HuaidongCHEN,graduatedwithPHDdegreefromXi^anJiaotongUniversitywithmajorinMaterialsscienceandtechnology.ThenhejoinedCGNPCCompany,mainlyfocusedonin-serviceinspectiontechno
8、logyresearchanddevelopmentfornuclearpowerplantandotherindustry,e.g・，RPVinspectionandequipment,ultrasonicexamination,inspectionqualification,researchanddevelopmentofnewtechnologyinnovation
