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1、ECNDT2006-We.1.4.3PWRReactorVesselIn-ServiceInspectionaccordingtoRSEMYvesBOUVERET,MarcALGAROTTI,LucHERNANDEZ,JeanPaulLANDEZ,Intercontrôle*,Rungis,FranceM.LUTSEN,EDF/CEIDRE,SaintDenis,FranceAbstract:ThenewIn-ServiceInspectionprocessprovidedbyIntercontrôlehasbeenqualifiedaccordingtotheRSE
2、Mstandard(theFrenchENIQmethodologybasedcode).Designedforhigh-sensitivityinspection,usingimmersionUTtechniques,PLUSthisprocessusesanew“MIS”Manipulator,aSaphirDataAcquisitionSystem,specificfocusedandfocusingUTtransducersanddedicatedanalysissoftware.Highaccuracyofcracksizingisobtained(i.e.
3、:±2mmforundercladdingcrackswhateverthesurfaceconditionis)providingreliableinformationtoutilitiesandsatisfyingregulatoryrequirements.The“MIS”ManipulatorisinstalledontheReactorPressureVessel(RPV)flange.Eachinspectiontoolisdedicatedtotheexaminationofaspecificpartofthevessel.Scanningspeedis
4、ashighas300mm/sandparallelacquisitionsarecarriedout.Becauseofitssturdystructure,accurateandrepeatablescanningisguaranteedevenwhenmanyyearsgobybetweeninspections.TheMISisremotelyoperatedfromoutsidethecontainmentusingopticalfiber.Wideuseofnetworklinkshasloweredthenumberofcablesandconnecti
5、ons;mostofthecablesnowruninsidethemachinestructure,avoidingcontaminationandkeepingonwithALARApractice.Roomisleftavailableonthemachinetoaddothertools,eithertoaddressnewsafetyrequirements(EThasalreadybeendone)ortoprovideRPVmaintenancecapability(grinding,EDM…).High-endanalysissoftwaredevel
6、opedbyIntercontrôlecarryoutallanalysisactivities:-CIVACUVE:segmentationprocessingforafastandreliablecharacterizationandsizingofdefectswithpartiallyautomaticanalysisprocessanddatareporting,-CIVAMIS:on-lineprocessingtools(modeling,cracktipdiffractionanalysis,phaseanalysis…)tosupportdefect
7、expertappraisal.1.IntroductionAREVANPexperienceintheexaminationsofreactorcomponentsbeganinthe1970's.Sincethen,eachunit(American,FrenchandGermancompanies)developedautomatedNDTinspectionsystemsandcarriedoutpre-serviceandIn-ServiceInspections,(ISI)usingalargerangeofNDTtechniquesto
