ML17251A983

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Summary Exam Rept for 1988 Steam Generator Eddy Current Insp.
ML17251A983
Person / Time
Site: Ginna Constellation icon.png
Issue date: 02/29/1988
From: CURTIS A E, HENRY G L
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17251A982 List:
References
NUDOCS 8803180002
Download: ML17251A983 (45)
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ROCHESTERGASANDELECTRICCORPORATION89EASTAVENUE,ROCHESTER,NY14649RESEARCHANDSCIENCESDEPARTMENTMATERIALSENGINEERINGANDINSPECTIONSERVICESSECTIONSUfdtARYEXAMINATIONREPORTFORTHE1988STEAMGENERATOREDDYCURRENTINSPECTIONATR.E.GINNANUCLEARPOWERSTATIONFebruary29,1988PREPAREDBY:GaryL.Henry,ForemanMaterialsEngineeringandInspectionServicesEddyCurrentLevelIIIExaminerDATE:cP~/PV8'EVIEWED/APPROVEDBY:AlbertE.CurtisIII,Manager,MaterialsEngineeringandInspectionServicesDATE:8803)80002880307PDRRDOCK05000244QDCD TABLEOFCONTENTS

1.0INTRODUCTION

1OF402.0DATAACQUISITIONPROGRAM2OF403.0DATAANALYSISRESULTSSUMMARY5OF404.0OBSERVATIONS23OF405.0CORRECTIVEACTION26OF40 I.0'INTRODUCTION~ThefollowingreportisasummaryoftheresultsofthemultifrequencyeddycurrentexaminationperformedduringtheFebruary1988AnnualRefuelingandMaintenanceOutageattheR.E.GinnaNuclearPowerStation.Theexaminationwasperformedonboththe"A"and"B"recirculatingsteamgeneratorswhichareWestinghouseSeries-44design,containing3260InconelGrade600tubeshavinganoutsidediameterof0.875"andanominalwallthicknessof0.050".TheexaminationwasperformedbyRochesterGas8Electric(RG&E)personnelthathavebeentrainedandqualifiedintheeddycurrentexaminationmethodtoatleastaLevelIcertification..TheinitialdataanalysisreviewwasperformedbyZETEC'sComputerDataScreening(CDS)System.AsecondarydataanalysisreviewwasperformedbyRG&EpersonnelsubsequenttotheCDSanalysis.ThedataanalysiswasperformedutilizingtheZetecDDA-4DigitalDataAnalysisSystem.FinalresolutionsofalldataanalysiswasperformedbyRG&ELevelIIIpersonnel.ThepurposeoftheeddycurrentexaminationwastoassessanycorrosionormechanicaldamagethatmayhaveoccurredduringtheoperationcyclesinceMarch1987,andtoaddresstheconcernsoftheNorthAnnaTubeRuptureEventandprovideWestinghouseElectricCorporationwithactualplantspecificinformationonantivibrationbarlocationsforevaluationofsufficientsupportandflowpeaking.Particularattentionwasgiventodetectingintergranularattack(IGA)andintergranularstresscorrosioncracking(IGSCC)inthetubesheetcreviceregion;pittingandwastagebetweenthetubesheetandfirsttubesupportplate;dentingatalltubesupportplateintersections;andwearfrettingattheantivibrationbartotubeintersectionsinthe'U-bendregion.PAGE1OF40

/f2.0DATAACUISITIONPROGRAMTheeddycurrentexaminationofthe"A"and"B"steamgeneratorswasperformedutilizingtheZetecMIZ-18DigitalDataAcquisitionSystem.Thefrequenciesselectedwere400,200,100and25kHz,allofwhichwereruninthedifferentialandabsolutemodes.Theexaminationwasperformedprimarilywithastandard0.740"or0.720"O.D.bobbincoil,withsmallerdiameterprobesusedtotraversethesmallerradiusU-bends.Priortoexaminationofthesteamgenerators,aninspectionprogramwasestablishedfortheinletsidesofboththe"A"and"B"steamgenerators.Thephilosophyingeneratingthisprogramistoprovide1005examinationcoverageofeachsteamgeneratortubefromthetubesheetuptothefirsttubesupportplate,alongwith40Kofthesetubesbeingselectedandexaminedfortheirfulllength.Inaddition,allprevioustubeswithindicationsgreaterthan20/throughwalldepthwereexaminedasaminimumtothelocationoftheirdegradation.TodetermineantivihrationbarsupportforRow9throughRow12,ColumnIthroughColumn92,tubeswereexaminedfromtheprimaryfacetotheuppermostsupportontheoppositeleg.TableIisabreakdown,bysteamgenerator,ofalltubesexaminedandtotheextentinspected.PAGE2OF40 STEANGENERATOR"A"1988EDDYCURRENTINSPECTIONEXTENTSPRIORTOCORRECTIVEACTIONTOTALTUBESINSPECTED-HOTLEGCOLDLEG1517188.8/48~5TOTALTUBESINSPECTED-FULLLENGTH(F/L)124439.8/INTERSECTIONSINSPECTEDHTSNiTSPH02TSPH13TSPHI4TSPH55TSPH56TSPHEXCLUDINGF/L18781872159183183134~7668~59.5~3~3~4~8./8/P)0//8UBEND2788.6/N6TSPCN5TSPCN4TSPCe3TSPC82TSPCIlTSPCCTS1831831881812732738.5.5.5~5~8~8~788/7/77/7/SLEEVESINSPECTEDTUBESOUTOFSERVICE94.8/TABLE1PAGE3OF40 STEANGENERATOR"B"1988EDDYCURRENTINSPECTIONEXTENTSPRIORTOCORRECTIVEACTIONTOTALTUBESINSPECTED:HOTLEGCOLDLES272312!811!9!i!~!if47~7/TOTALTUBES'NSPECTED:FULLLENGTH<F/L)97735.8/INTERSECTIONSINSPECTEDEXCLUDINBF/LHTS01TSPH02TSPHTSPHN4TSPH05TSPH06TSF'17'PZ1871~64>447453615~565.68.1Z~12iniu~19.8/7/6/6/e/6lUBEND86TSPCN5TSPC04TSPCTSPC02TSPCTSPCCTSSLEEVESINSPECTEDTUBESOUTOFSERVICE~I2&>24424324g24224>2427615~2/11~8/11.8l11.8/11~8/11.8l11.8l11.8/6.48~4lThisnumbervepvesents1!dlafal1sleevesnotinspectedduein@the1'787AI&0~TABLE1<cont)PAGE4OF40 3.0,DATAANALYSISRESULTSSUMMARYTheinitialComputerDataScreening(CDS)AnalysisandsecondarymanualdataanalysiswasperformedusingtheZetecDDA-4DigitalDataAnalysisSystem.Edition18.6Rev.5ofthedataanalysissoftwarewasusedtoanalyzedatafromtheMIZ-18digitaldataacquisitionsystem.Thissystemprovideson-linedatadigitizationandstorageontoamagneticdatacartridge.Alldigitaldata(upto8channels)issentdirectlytotheHP200/300SeriesComputerfromthedatacartridge.Amessageblockisavailableshouldanycommentsbedesiredduringdataacquisition.Alldatacartridgeswerereviewedbydisplayingthe400kHzdataontheCRTalongwiththeverticalcomponentofthedifferentialandabsolutemixoutputsinstripchartform.Otherfrequenciesandtheircomponentswereselectedasneededforfinalresolution.Allrecordableindicationswereloggedintothecomputerandstoredonfloppydisk.Thefinalreportformsummarizingallcreviceand>205throughwalldimension(TWD)indicationsforeachsteamgenerator(inletandoutlet)canbefoundinTable2.Anexplanationoftheabbreviationsandnomenclatureusedontheselistshasbeencompiledforeaseofinterpretation.Table3hasbeencompiledtoshowalistofthetotalnumberofdentsateachaxialelevationandTable4isabreakdownofthedifferenttypesofdefectsateachaxialelevation.Thedentindicationsonthistableareonlythosewithsignalamplitudeof5voltsandgreater,whichwouldapproximateabouta.0025"denton-thediameterofthetube.PAGE5OF40 se<<<<<<<<<<RPC,RTUBANST)S)SVKR.5I)>>>><<<<>>>>r)orFebruary22'9BOPlant:(2INNAOutage-'BE-88AQUERY:ALLINDICATIONS29/ANDGREATER09s50AM<<<<<<>>>><<<<<<<<<<<<<<PageSteamBene)'atom:AROMCOLOUTAGEINDICATIONVOLTSLOCATIONINCHESCONl(ENTSREEL1721242897967289151726388181913143314283192123241718232426252715232423'242922232122232123251929262226277RGE-SBA7RGE-BBA9RGE-BBA12RBE-BBA14RBE-BBA17R6E-BBA17RBE-BSA18RGE-BBA29RBE-BBA29RGE-BBA21RGE-SBARBE-BBA21RGE-BSARGE-SSA21RGE-BBA21RGE-BSA21RGE-SBA21RGE-BBARGE-BBA22RBE-BBA22RBE-BBA22RBE-BBA23RGE-BBAR6E-BBA23RGE-SSA23RBE-BBA24RGE-SSA25RGE-BBA25RGE-SBA25RGE-SSA26RGE-SBA26RGE-BBA26RGE-SBA26RBE-BSA26RGE-SBA27R6E-BBARC<-SBA27RGE"BBA27R6cSSARGE-BBA27RGE-SBA27RBE-BBA28RGE-BSA28RGE-BBA29R6E-SBA39RGE-SBARGE"BBA39RBE-BBA31RBE-BSARBE-SBA31RBE-BBA32RGE-BSA32RGE-BSARGE-BBA32RBE-BBA33RGE-BBA33RGE-SBA33RGE-BBA34RGE"SSA34R6E-BBA34RGE-SSA35RGE-SBA35RGE-SBA35R6E-BBA36RBE-SSA36RGE-BBA36RBE-BSAOD(general)OD(general)OD(general)OD(general)ODSCCODWASTAGEODNSTABEOD(qeneral)ODWASTAGEOD(general)ODWASTAGEODWASTAGEODMASTAGEODMASTAGEODNSTABEODSCCOD(general)OD(general)OD(gene)al)ODWASTAGEODMASTAGEODWASTAGEODWASTAGEODWASTAGEODNSTABEODWASTAGEOD(general)OD(general)OD(general)OD(general)OD(general)OD(general)OD(general)OD(general)ID(general)OD(general)OD(general)OD(general)OD(general)OD(general)OD(qeneral)ODSCCODWASTAGEODSCCODWASTAGEODNSTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODMASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODNSTAGEODMABTAGEODWASTAGEODNSTABE.ODWASTAGEODWASTAGEODNSTAGEODWASTAGEODWASTAGE21/TN22'I.TN32ITW39/TW52XTM22%TM34/TW22%TN22/TN22/TN25/TW25%TN34%TN22%TN24%TN84/TW27/TW27/TW27'/TN23%TM23/TW21/TW29'/.TN23/TN26%TW26XTN35XTW31/TW27/TN32/TN21/TW38%TM25/TM23/TN22/TW27/TW21/TM26/TW23/TW29XTW22%TM72%TW28%TW78%TW33/TW22/TN>>/TW29/TW31/TW24/TW24/TN29/TW27%TM24/TN29/TW21/TW28/TN25XTN23%TM26/TN24'/TW23%TN27/TM24/TN24/TM28XTW25XTN1.89HTSSF1.99AVB24.17H62.87HTSSF9.84HTSSF9.93HTSSF9.84HTSSF1.55HTBSF2.66HTSSF2.76HTSSF4.25HTSSF4.25HTSSF1.38HTSSF6.44HTSSF5.24HTSSF1.59HTSSF1.15HTSSF1~43HTSSF1.99HTSSF1.47HTSSF1.96HTSSF1~36HTSSF3.46HTSSF1~15HTSSF15.29HTSSF2.91HTSSF1.59Hi19.44HTSSF3.39Hi1.89Hl4.53HTSSF2.97HTSSF2.93HTSSF2.93HTSSF'.66HTSSF19.14HTSSF5.12HTSSF11.46HTSSF5.15HTSSF2.49HTSSF3.63HTSSF9.53HTSSF1.33HTSSF4.91HTSSF1.95HTSSF2.59HTSSF7.90HTSSF7.37HTSSF9.69HTSSF7.11HTSSF8.44HTSSF7.68HTSSF14'2HTSSF3.75HTSBF19.99HTSSF6.74HTSSF13.57HTSSF7.97HTSSF6.78HTSSF3.17HTSSF11~14HTSSF5.61HTSSF2.92HTSSF7.92HTSSF1.73HTSSF8.36HTSSF7.63HTSSF-17,29t1.69t37.49-19.69t1.49t1.89t44.20t2.69-17.80t2.49t2.49t2.39t1.79t1.99-lb.99-4.79-11.69-17.89t1.79t2.Nt9.39t2.29+1~59t3.19t1.89ti9.79t2.79t3.29+7.39+1.49t2.29t1.70+1~39-11.29t3.79t3.99t2.50t2.49t1.20t1.69-12.69t1~69-15.19t3.49t2.19t1.59+1.79+2.49t1~99+1.69t3.19t2.39t1.39t3.59t1.89t2.19t2,49t2.20t2.49t1.69+2.39+2.49+1~39t1.69+1,49t1'9CPRSCC)CPRNASNSMASMAS)CPRWASsCPRMASMASMASSCCMASNSNSNSMASMAS)<<MASNASMAS)CPRMASNSSCCNSSCCMABWABWASMASMASNSNSNBMASMASMASMASMASMASMASNS)<<MASMAS,<<MAS<<MASNSNSNSNSNS11)152)1522s173)17333s173)173)173s173)173)193s173s1933444)194s194)194)194)194s19444)194s194)1916)194r194s194r194s194)364)194)19TABLE2PAGE6OF40 l>>>>>>>>>>>>k4LCsTU})AN<T)$)SVLR5}S)>>>>>>>>>>>>HcRl}>>bru>>ry42y$9QQPlant-SINN)-"rOutage-RGE-88AeQ3ERY:ALLINDICATIONS28/ANDGREATER49}59A)$>>>>>>>>>>>>>>>>>>>>>>>>PageamGenerator:ROMCOLOUTAGEINDICATIONVALUEVOLTSLOCATIONINCHESCOI(ENTSREEL2836RBE-BBA2137RGE-BBA2237RGE-BBA2337RGE-BBA2537RBE-SBA2637RBE-BBA2438RGE-BBA2538RGE-BBA2738RGE-BBA2838RGE-BBA2539RGE-BBA2639RGE-SBA2148RBE-BBA2448RBE-BSA2648RGE-BSA2748RGE-BBA1841RBE-8812441RGE-BBA2541RGE-BSA2641RGE-SBARBE-8812841RBE-SSARGE-BBA2941RGE-SBA3741RGE-BBA1442RGE-BBA2642RGE-BBA2942RBE-BBA1843RGE-BBA2743RGE-SBA2843RGE"BBA2744RBE-8812944RGE-BBARBE-SBA445RGE-SBA1245RGE-SSA2845RGE-BBA2145RGE-8812245RBE-BBA2745RGE-SBA2945RGE"BBA1446RGE-BBA2846RCE-BBA2546RGE-SSA2646RGE-BBA2847RGE-BBA2147RGE-BBA3447RGE-BBA3747RGE-SBAii48RGE"BBA2648RGE-BBA2848RGE-SBA2849RGE-BBARGE-BSA3649RGE-BBA2458RGE-BBA58RBE-BSA1951RGE-BSA1653RGE-BSA1753RGE-BSA1953RGE-BBARGE"BSA3853RGE-BSA1854RGE-BBA1755RGE-BBA2858RGE-BBA2458RGE-BSAODWASTAGEODWSTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEGDWASTAGE09WASTAGE09NASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEOD(qeneral)ODWASTAGEODWSTAGEOD(Aeneral)ODWASTAGEOD(qeneral)ODWASTAGEODWSTAGE09WSTABEOD(general)OD(Aeneral)ODWASTAGEOD(general)OD(general)OD(general)GD(general)OD(general)OD(general)OD(general)OD(general)OD(general)OD(general)OD(general)GD(general)OD(general)09(general)OD(general)ODWASTAGEOD(qeneral)ODWASTAGE09WASTAGEOD(general)OD(general)GD(general)OD(general)OD(Aeneral)ODWASTAGEODWASTAGEODWASTAGEODMASTAGEOD(general)OD(general)OD(Aeneral)ODWASTAGEODWASTAGEODMASTAGEODWASTAGEODWASTAGEOD(qeneral)GDWASTAGE09WSTAGE09(qeneral)GDWASTAGE35/TM22/TM21/TW25/TN21/TW227,TN24/TW23/TN28%'N26/TW26/TN22/TM22/TN24/TW25/TN23/TW35/TN22%TW22/TW38/TW38%TW23%TW22/TN22/TN27/TN22/TN22/TN22/TN26/TW28/TW22%TW22/TW23%TN31%TN32/TN25/TN36/TN27/TW39/TW26%TW23%TW22/TW22/TW23/TN28/TW22/TN22/TW25%TM25/TW21/TN28/TW21/TW21%TN21%TN28%TN26%TN27/TW22/TN21%TW32/TW26/TW27/TW21/TN23/TN34%TW35%TW27/TN2.56HTSSF18.28HTSSF5.46HTSSF2.28HTSSF5.78HTSSF5.32HTSSF6.15HTSSF5.98HTSSF5.25HTSSF1.35HTSSF2.86HTSSF1.18HTSSF6.'64CTSSF1.41HTSSF,6.84Hb8.29HTSSF1.22HTSSF4.11Hb19.33HTSSF7.24H62.54HTSSF4.81HTSSF5.64HTSSF4.99H6-2.78H41~86HTSSF7.82HTSSF5.61HTSSF2.14HTSSF4.63HTSSF9.76HTSSF2.47HTSSF5.52HTSSF8.27HTSSF3.23Hf5.19HTSSF5.54CTSSF8.46CTSSF9.62CTSSF8.44HTSSF4.77HTSSF1.17HTSSF16.98CTSSF8.24HTSSF5.58HTSSF12.41CTSSF17.22CTSSF5.98Hb3.45Hi2.38HTSSF4'5HTSSF12.72HTSSF9.14HTSSF9.59HTSSF4.23H41.97HTSSF2.66Cb7.48HTSSF2.29HTSSF1.42HTSSF2.24HTSSF2.83HTSSF2.7fHTSSF2.61HTSSF8.95HTSSF9.97HTSSF1.62HTSSF+1~28+1.79+1.88+2.28+2.18+1.M+1~58+2.59+1.78+1~28+2.48+2.28+f~88+1.98+2.68+2.M+2.29+1.78+1.98+2.48+1.M+2.59+2.88+2.68-24.88+8.49+1.89+2.88+2.58+2.49+2.18+1.88+1.59+1.19+11.18+2.88-15,M-15.58-15.49+8.89+8.59+3.38-15.59+1.19+1.39-15.88-14.98-33.68-8.88-11.29+1.58+1.89+1.88+8.48-f3.69+f,98+69.18+1.78+5.28+3.98+2.88+1.59-8.18+2.98+4.28+2.98WS)))WAS)CPRMASMASMASWSaMAS)CPRWSMASWSNASMAS)CPRWSsCPRMASWS)CPRWSWASMASWS)CPR~WASNASWSMASWSWSMASWSMASsCPRWASNASWASMASNASWASWSWAS)<WAS)CPRMAS)s)MASWASWASASWASWSWSWS)CHTWS)CHTMASMAS)CPRWAS)+WASWSWSWAS)CPRWAS)XMASWSWAS4s194)19fb)1916}36164s1916444)194)1914)194)194)194)194s194)194)194)194)194)194)194)194s194)365s285)195)285)295s285)285)365}365)285)185)285)285s285)295)286)216)216)216)216)216)21b)216)216s186)216)216)216)216)227)227)227s157)257)257)257)257s258)258}2515s269s26TABLE2(con't)PAGE7OF40

>>>><<<<>>>>"PPKiTUS)AM)PS)VER,5,s)S)>>>><<<<>>>>MonC<<bru<<rysPlant-GINN)-")Outage:RGE-SSA~QUERY:ALLINDICATIONS28XANDGREATER22'9SSfS)SSAM<<<<>><<<<<<<<<<<<<<<<>>gePaamGenerate)r-AROWCOLOUTAGEINDICATIONVALUEVOLTSLOCATIONINCHESCO)STSREEL1759RGE-88A2459RGE-88A2868RGE-88A1361RBE-88A1461RGE-88A1561RGE-88A1'961RGE-88A2861RGE-88A1964RGE-88A2864RGE-88A1565RGE-88A1668RGE-88A969RGE-88A1469RGE-88A678RGE-88A978RGE-88A671RGF=88A1271RGE-88A873RGE-88A874RGE-88A'74RGE-88ARBE-88A82RGE-88A1687RBE-88ATOTALTUBESTOTALINDICAODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEOD(qeneral)ODWASTAGEODWASTAGEODWASTAGEODWASTAGEODMASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEODWASTAGEOD(general)OD(general)FOUNDTIONSFOUND21/TM23XTM33/TW35XTM28/TW25/TW22/TN33XTW22/TN22XTN28XTN27/TW22XTW35/TW21/TN25/TW21/TW29/TN23/TW21XTW22/TN24/TM25/TW36/TN1431583.91HTSSF2.39HTSSF1.61HTSSF3.77HTSSF6.39HTSSF6.12HTSSF4.62HTSSF3.81HTSSF9.58HTSSF1~12HTSSF5.57HTSSF16.77CTSSF2.84HTSSF9.88HTSSF3.21HTSSF4.81HTSSF7.54HTSSF1.13HTSSF1.68HTSSF4.33HTSSF2.84HTSSF7.72HTSSF2.46HTSSF9.65HTSSF+2.18+1.19+1.38+1.59+2.28+2.58+1.49+1,79+1~49+1.98+1.58-12.19+1.29i2.38+8.68+1.89+8.69+1.69+8.98+1.19+1~89+1.28+4.38+11.98MASMASMASMASMASMASsCHTMASMASMASWASNASNASNASNASNASNASNASMAS)CPRMASNASNASWAS9)269)269)2715)279)279)279)279s2718)2818)2818s2812)2912)1812.1212)181212)18121212)1812)181316TOTALTUBESININPUTFILE=3268TOTALTUBESIt(SPECTED=3124TABLE2(con't)PAGE8OF40 I<<<<<<<<<<<<)ss)tingTISAN{T)s))VQR,g,i)l)<<<<<<<<<<<<)son<<beau<<rY22()%0Plant-SINN)"-rOutage:RBE-888'@JULY:AL'LINDICATIOi(S28%TMANDGREATER1))20Qs<<<<<<<<<<<<<<<<<<<<a<<PageBreamBeneratarBROMCOLOUTAGEINDICATIONVALUEVOLTSLOCATIONINCHESCOMMENTS1887999911181138111322181317182817241617192824242438245144548232463649271528411713256813288282238126RGE-SBBRGE-SSB13RGE-SBB16RGE-88B16RGE-SBB18RGE-88B19RGE-SBB19RGE-SSB28RGE"SBB21RGE-88B21RGE-SSB22RGE-SSB22RGE-SSB22RGE-BSB23RGE-88B23RGE-88B23RGE-SSB24RGE-BBB24RGE-88B24RGE-8SB24RGE-SSB24RGE-BBB25RGE-SBB25RGE-88B26RGE-SSB26RGE-SBB26RGE-SBB26RGE-SSB26RGE-88B27RGE-SSB38RGE"SSB31RGE"SBB32RGE-88B33RGE-SSB33RGE-SBB39RGE-88B48RGE-SSB4fRGE-88841RGE-8884fRGESSBRCE-88B42RGE-BSB43RGE-SSB45RGE-SSB45RGE-SSB45RGE-SBB46RGE-SBB46RGE-SSB46RGE-SSB48RGE-88B49RGE-SSB58RGE-SBB58RGE-BSB51RGE-BSB51RGE-SBB51RGE-BBB51RGE"88B52RGE-BBB55RGE-88B56RGE-BBB56RGE-SSB58RGE-SBBRGE-SBBRGE-BSBRGE-88B61RGE-SSB62RGE"SSBOD(general)OD(qeneral)ODSCCODWASTAGEODWASTAGEOD(geneval)OD(general)OD(general)OD(general)OD(general)OD(general)OD(geneval)OD(qeneral)ODSCCOD(general)OD(general)OD(general)OD(general)OD(general)OD(general)OD(general)OD(geneval)OD(general)OD(general)ODWASTAGEODWASTAGEOD(general)OD(general)OD(general)ODWASTAGEODWASTAGEODSCCODWASTAGEODSCCODSCCOD(qeneral)ODSCCODWASTAGEOD(general)OD(general)OD(qeneraf)ODWASTAGEODSCCODWASTAGEODWASTAGEODSCCODWASTAGEODWASTAGEODcCCODSCCODSCC'ODWASTAGEODWASTAGEODWASTAGEODMASTAGEODWASTAGEODSCCODWASTAGEODSCCODWASTAGEOD(qeneral)ODSCCODSCCODSCCODSCCODSCCOD(general)38XTW39/TN81%TW28%TM28/TW28/TW28XTW28/TW21/TW24/TM28/TW28/TN24/TW68/TW22/TW21/TW25%TW21/TN22/TW28/TW28/TM21/TW28/TW22%TW28/TW31%TN33%TN28/TW28/TN28/TN21%TW28/TW37XTM53XTW78/TW24/TN91/TW26/TN22/TW22/TN34%TM22/TM68/TW23/TN28/TW74/TW21%TW35/TW87%TW76%TM68/TN28XTM29/TW28/TW26/TW28/TM78/TW25XTM85%TM22/TM37XTN91/TN53/TN75/~TM97%TN84/TM25/TW1.72C22.36Cl1.69HTSSF8.99HTSSF8.95HTSSF6.92HTSSF9.16HTSSF12.23HTSSF8.88HTSSF18.48HTSSF9.21HTSSF5.86HTSSF5.59HTSSF8.83HTSSF7.72HTSSF6.78HTSSF2.89HTSSF8.27HTSSF8.63HTSSF5.97HTSSF6.99HTSSF6.55HTSSF9.59HTSSF6.92HTSSF8.83HTSSF9.96HTSSF11.21HTSSF6.18HTSSF18.23HTSSF11.84HTSSF9.16HTSSF1~52HTSSF1.53HTSSF8.91HTSSF8.76HTSSF1.59HTSSF4~51HTSSF6.28HTSSF4.76HTSSF4.58HTSSF3.24HTSSF4.32HTSSF4.25HTSSF1.75HTSSF4~91CTSSF8.66HTSSF9.25CTSSF1~18HTSSF1~67HTSSF3.64HTScF8.98HTS'SF6.47CTSSF3.25HTSSF2.66CTSSF11.39CTSSF4.97CTSSF3.62HTSSF8.11CTSSF1.34HTSSF2.78CTSSF1.87HTSSF3.99HTSSF1~64HTSSF2.85HTSSF1,39HTSSF3.53HTSSF16.78CTSSF-17.18+1.18+8.98+1.38+1.78+1.58+f.58+1.78+1.58+1~28+1~68-18.88+2.88+1~28+1.68"1~38-1~38-1.68-1.28-1.58-1.78-1.38+1~58+1.40-1.28-1~78-1.68+1.28+1~88-17.88+1.88-lb.18-12.88+41.58-18.48+8.50+1~88+1~68+1~28+8.78-18.38+8.58+1.78-7.10+1~70+3.58-f7.68-13.28"lb.58+1.68+3.28+1.68+2.10+1.68-11.68+F88-13.38+1~68+2.58-17.38-lb.88"17.48-17.98-12.98-9.68SCCMASWASCPRMASMASMAS<<MASSCCMASMASWASMASMASSCCMASSCCSCCMASMASSCCMASMAS)<<MASMAS,SCCMASMAS)CPRSCCSCCSCCMASMASMASMASMASSCCMASMAS)SCCMASMASSCC)HISSPLUGSD1-59(HL)SCC)HISSPLUGGED1-59(HL)SCCsHISSPLUGGED159(HL)SCC)HISSPLUGGED1-59(KL)SCCCPR)MASis281)20222)f721172s1/2)162)172)172s162)172s1623)1633)1733333313413)324)284)284)2813)3255)335)17521)265)215622'l336)236)236)236)236)2367)2477s297)278)118)118)118)11925)33TABLE2(con't),PAGE9OF40 iosaar~R0),KT))BAN<TS)){VCR,5,0)eseosoS)oFsbruary22'980iPlant-(5INNAOutage-RGE-88B'UERY:AlJINDICATIONS28/TMANDGREATER11)50A)SiisossooeasaoPageSWamGenerator-BROMCOLOUTAGEINDICATIONVALUEVOLTSLOCATIONINCHESCON)(ENTS2862RGE-88B2263RGE-88B2863RGE-88B3663RGE-88B2664RGE-88B467RGE-88B668RGE-88B272RGE-88B273RGE-88B2679RGE-88B'981RGE-88B282RGE-88BODMASTAGEODMASTAGEODWASTAGEOD(qeneral)ODMASTAGEODMASTAGEODMASTAGEODSCCODSCCOD(qeneral)ODSCCODSCC22/TM28/TM23%TM25%TM28/TM21/TM25/TM53/TM91%TM25/TM82%TM85%TM4.68HTSSF18.51HTSSF4.95HTSSF3.61HTS-Hl-5.39HTSSF1~53CTSSF2.12CTSSF3.58HTSSF2.17HTSSF4.39HTS-Hl1.58HTSSF2.58HTSSF+1~58+2.88+1.78+19.89+2.68+2.28+1~98-lb.58-17.28+11.18-15.98-lb.78MASIGAMASsCPRMAS)CPRNSYMASMASMASSCCSCCSCCsIGASCC99)389386,399s3125)3318)2511111511)1211TOTALTUBESFOWiDTOTALINDICATIOiNSFOUND7479TOTALTUBESININPUTFILE=3269TOTALTUBESINSPECTED=2899TABLE2(con't)PAGE10OF40 LISTOF)20'5INDICATIONANDCREVICEINDICATIONNOMENCLATUREToofListInformationSG-SteamGeneratorandLeg(ie:1=A,2=8and1=Inlet,2=Outlet)ROW-ROWnumberfromthetubeidentification.COL-Columnnumberfromthetubeidentification.VOLTS-Amplitudeofthemeasuredindicationsignalresponse.XTWD-PercentthroughwallfromO.D.basedonmeasuredsignal.CH8-Channelfromwhichindicationwasdetermined.LOCATION-Locationofindicationrelativetotubesheetorsupportplate.InformationUnderValue(20-Measurableindicationlessthan20Kthroughwall.SAR-Multipleindicationsinterferingwithadepthdetermination(IGA-SCC).XX-Themeasurepercentthroughwallofthedeepestpenetration.ADS-AbsoluteDriftSignalIndicativeofIGA.InformationUnderCH8I-Indicationdeterminedandmeasuredwith400kHzdifferentialforfinalinterpretation.M2-Indicationdeterminedwithabsolutemix,depthcannotbeaccuratelydetermined,butbaseduponamplitudeisfelttobeabove40ÃIGA.PAGE11OF40 I

L'ISTOF>20KINDICATIONANDCREVICEINDICATIONNOMENCLATURE(CON'TInformationUnderLOCATIONHTSSF-Secondaryfaceofinlettubesheet.TSP-TubeSupportPlateCTSSF-Secondaryfaceofoutlettubesheet.AVB-AntivibrationBars-XX.X-Depthbelowthesecondaryfaceofthetubesheetorsupportplateswheretheindicationislocated.+XX.X-Heightabovethesecondaryfaceofthetubesheetorsupportplatewhereindicationislocated.H-HotLegC-ColdLegPAGE12OF40 Ii'lant'-BINNA.Outage-'GE-SSAS'teamGenerator:ADENT-VOLTSLOCATION<18,gg18.gg-128.rgg-2>27~9PTOTALl.2~3>>4~5.6.7.8.1fij.11.12'.13.14.15~16.17.18.}'P.28~2},22~23.25~26~27~28~38.31.32~34~35~36.37~38.3'P.48~4}.HTSPFHTSHIDHTSSFHTS-HiHiHi-H2H2H2-H3H3H3-H4H4H4-H5H5H5-H6H6>H6AVB}>AVB}AVB2>AVB2>AVB3AVB3>AVB4AVB4>C6C6C6-CSC5C5-C4C4C4-C3C3C3-C2C2C.-C}ClCi-CTSCTSSFCTSMIDCTSPFOTHERTOTALSPERCENT:g281581558888166?rg1gQjgg881674gg4143~~6g2rjj17683711rij1gg1717gfijr3!8ggg5g61488115168'pg8844835m383}866ig11g8816g8rgg8gqj82848685g5gfjj8g88}6881735lgg1grg812rjj7}688ggreg713g6g6g?g3ggfgg823818.Sg58377242582736117i}72gref1tgre8g1g23561}9726822224,83881268TABLE3PAGE13OF40

,~Plant-GINNA,Outage-'GE-88BSteamGenerator:BDENT-VOLTSLOCATION<18.8818.88-128.88-2>29.99TOTAL1.4~4~5~6~7;8~9~18~11.1213.14.15.16.17~18.19.2g,2~24.25~26.27.nS29~38.31~32.34.36.M738~39.48.41.HTSPFHTSHIDHTSSFHTS-HlHiHi-H2H2H2-H3HaH3-H4H4H4-H5H5H5-H6H6>H6AVB1>AVB1AVB.>AVB2>AVB3AVB3>AVB4AVB4>C6C6C6-C5C5C5-C4C4C4-C3C3C3-C2C2C2-ClClCi-CTSCTSSFCTSHIDCTSPFOTHERTOTALSPERCENT-g58131681g1811281884gg!if819818gg1285191853855.5g1278rlf8gg4ftf213lCf881gggg6138CgC<.ig11382235g26327.581434g51g8888gg8g7g8g181!if1g8gg788~2g821142g2g35g8gg1Cifrif8888888g2.82g2g/ifClfg8848.8Cg1843132828188261617816g8g27811424g212!ifTABLE3(con't)PAGE14OF40 t.P,lant-GINNAOutage:RGE-88ASteamGenerator:ODWASTAGETWLOCATIONSPECIAL'2828-3948-49)49TOTALi.3~4~5.6.7.8~18~11.12~14.15~16~17.18~19.28~~>>~2425.26.27~28~38.31.&2~33~34.35~36.37~38.48.41.HTSPFHTSHIDHTSSFHTS-HiHlHl-H2H2H2-H3H3H3-H4H4H4-H5-H5H5-H6H6>H6AVBi>AVBiAVB2)AVB2>AVB3AVB3>AVB4AVB4>C6C6C6-C5C5C5-C4C4C4-C3C3C3-C2C2C~-CiCiCl-CTSCTSSFCTSHIDCTSPFOTHERTOTALSPERCENT-8!ifg8gg88g8g8ggg!388gg!ijgg8gggggg8gg!if88!if!iftij88~88i>i7ref8188g!ij8g8gg88gg88!ifgrgjg888888gg1gg878489~1gg'95gg!8g888g888tif88gggggggg88ggg88ggggg8g96lg.9g88ggg!8ggfjfgg8gg!if88gg888grgg8ref8!ifggtifg8!ij!ifg8tg'rg88.888ggggg8g8g88grij88!ifg8g88gg8gfg8gfjfgggg888.8887988888g8g888g8gg!ijggggg88g8g8gg!ij1g7618gTABLE4PAGE15OF40

>>>>>>>>>>>>RQ1KTUt!AN(Ttt)!VCR5ttl)>>>>>>>>>>>>MondayF>>bruaryPlant:SINNAOutage-RGE-88A22ttCIQQ12ttthPH>>>>*>>>>>>>>>>>>>>>>>>PageamGenerator-AODSCC/TfrfLOCATIONSQR<2828-3948-49>49TOTALi.2.3~4,5.6.7~8~9~18.11.12~1D~14~15.16.17~18.19.2g21,~a~2~~24~25~27~28~29'.38.wi.ZJ~a4~~5~36.D7~'38.48~41.HTSPFHTSMIDHTSSFHTS-HiHlHi-H2H2H2-H3HaH3-H4H4H4-H5H5H5-H6H6>H6AVBl>AVB1AVB2>AVB2>AVBZAVBZ>AVB4AVB4>C6C6C6-C5C5C5-C4C4C4-C3C~CZ-C2C2C2-ClClCi-CTSCTSSFCTSMIDCTSPFOTHERgr~$!)irifgti$gg8888g888g8ggrif8g8gg8gtgf8g!ifggg!if8g8gggi<Igggg!ifg8gg8gggg!ifgggtif88cd88ggggiggtd!if8ri!88!ifg88!ifg88ggg8pter88gg8g!d8!if8ggrd8gtdggg88g!ifrtf8gtd.8gCtfrifg8!ifg!if8g8ig8gcd888888g88gg8grif!ifgggggidg/ifgg!3gg8g8ggg8g8g!dg8g8888gg8gggggg8ggg4g8!ifg!if8ggcd8ggg888!ifgg!3!ifid888g8gg8!ifgggcdTOTALSPERCENT-grd.ggcg~cdg8.8rd8~8lgg.8TABLE4(con't)PAGE16OF40

,Plant:GINNA,Ocitage.RGE-SBAS'teamGenerator:ALOCATIONODIGAADS/TN$2828-Q94!8-49>49TOTAL1.2.5.6.7.8.9~18.1112~1.4~15.16~17.1.8~19.28.21'2~22e2425.2728.29~38.ai.~2~i4.Z5~~6.27-38.u9.4g,41'TSPFHTSHIDHTSSFHTS-H1HlHi-H2H2H2-HZHaHi-H4H4'H4-H5H5H5-H6H6)H6AVB1)AVB1AVB2>AVB=>AVBZAVBZ>AVB4AVB4>C6C6C6-C5C5C5-C4C4C4-C~C3C~~-C2C2C2-C1CiC1-CTSCTSSFCTSHIDCTSPFOTHERTOTALSPERCENT-!i!8888888ggg8g8888!i!8888g8gr3!i!g8g8gri!g8g88igg.8rgfi!!i>ggg8ggg88g8gljr3ri!88g8888glggggg8g88ggg8g8.88gg8g888888888gfg88g88gg88g8gggg88g8g8g8~8g88888grgfg88888~gr38gggg8g8gggg88ggrg8gr3gggg8~8ggggg888g8g888g8gg88888888g88g8!88ggg8r3!i!88lg8888g888gg888888888gg88888gggg888g888gTABLE4(con't)PAGE17OF40

~P,lant:GINNA,Outage-"RGE-88AOD(eneval)/TWLOCATION<282g-Zq48-4q>49TOTAL4~5~6.7.8.'p.18.11.12.13.14'5.16.17'8.1'p.2g,21~22~24.25~26~2'7~28~34~i5.36~~7~a8.~9.4g,41.HTSPFHTSMIDHTSSFHTS-HiHiHi-H2H2H2-H3H3H3-H4H4H4-H5H5H5-H6H6>H6AVB1>AVB1AVB2>AVB2>AVBZAVB>>AVB4AVB4>C6C6C6-C5C5C5-C4C4C4-CeC~CZ-C2C2C2-ClClCi-CTSCTSSFCTSMIDCTSPFOTHERTOTALSPERCENT:g88gg8g8g8g888fjf8gg!iSg8gggg88zrf88gg18888g!if811.4rd185g18g88g~g8g88gggg1g!ijg8!388!ifg!if!if881ggg152cgf~5g7g84g882888185gg8g8!if!ijg88r!ig888g88887gg5778.18g!if888g88g8g8888gg8g8!if8ggrd,8'888gggggggg!ij!if8.88888888rg8!3g88g88gg888r~jggg8gg888gg8ggggg8g,g88834g5888288!ij88gg1g818g18g88gggg88181PS!if87&TABLE4(con't)PAGE18OF40

,:Plant-GINNA,Ou'tape:RGE-88BODTWLOCATIONSPECIAL<2!i!2!d-3'P4!d-4'7>49TOTALi.3~4,5.6~7~8.18.11.12.13.14~f5.16~17.18.1'P~28.2f.~~24.25~26~28~2'P.38.31.34.35~36~D7~38.48.41.HTSPFHTSMIDHTSSFHTS-HiHiHf-H2H2H2-H3H3H3-H4H4H4-H5H5H5-H6H6>H6AVB1>AVBiAVB2>AVB2>AVB3AVB3>AVB4AVB4>C6C6C6-C5C5C5-C4C4C4-C3C3C3-C2C2C2-CiCiC1-CTSCTSSFCTSMIDCTSPFOTHERTOTALSPERCENT-8gg8g888ggg8g!jf88gg88g8rgg888g8g8g888g8g88gg~g8f!i!g.31gg8g88888888g88g8g8g!i~gggg!i!8g181671g8841394.1g88168g8g!iSg88g8g88g88ggigg8gri!g8gg888ggiggggg265.9g8g'rgg88rgggg888g8ggg88gg8gg8g88g88rgg8888g8.8g8ggri!8!i!8g88gg8g8gg'8g88g8g88888g8g8ggg8gggg8,8rg18g247888g888!i!g8gg8g888g8rj!8gg8g8gg8181771g8gTABLE4(con't)PAGE19OF40

<<>>*>>>>>>MLr.TURAN!TM)rVLR.5.S)>>>>>>>>>>>>Mrrnd<<yC>>brushyPlantGINNAOuta8e:RGE-SBB22rlORQ12<04PM>>>>>>>>>>>>>><<>>>>>>>>Ia)emGenerator:BLOCATIONODSCCSG}R<.82!if-394!if-O'P>49TOTALi.2~5.6.7.8.18.11.lz.13m14.15.16~17.18~1'P.28~21~22~25~26~27~28.3Vlf31~32~33~34.35.36.37.38.4!if,41.HTSPFHTSNIDHTSSFHTS-HiHiHl-H2H2H2-H3H3H3-H4H4H4-H5HSH5-H6H6>H6AVB1>AVBiAVB2>AVB2>AVB3AVB3>AVB4AVB4>C6C6C6-C5C5C5-C4C4C4-C3C3C3-C2C2-CiCiCi-CTSCTSSFCTSMIDCTSPFOTHERTOTALSPERCENTS8288888rifgrifrifg8g8g8rlf!ifg88g88g!if8gg8g8888g828~3fg8g8g!if88g8888888g8g8888g88g8gggggggg8!ifgrifgrif.rlfg1gg8ggg8g8Cifggg888rlf8888g8gg8ggg8gg8grifg8g14.2Cifgref!ifggg8g88rif88gggrifCifg88g8g88rifggggg8rifggg.rg8g8888rif!ifg88g8g88888g88grlfggggrlfggggg!if!if!if2187.5824gg88888g88g!3888!if8g88g888g8gggg8gTABLE4(con't)PAGE20OF40

.Plant:GINNA!QUA'age:RGE-88BBLOCATIONODIGA-%TNADS<2828-39>49TOTAL1~~~3a4~5.6.7~8~18~11.13.14.15.16.17~18.19.2g,21'2'De2425.26.27.2838.3a.OA~34.35.36~'7~38.39~4g,41.HTSPFHTSMIDHTSSFHTS-HiH1Hi-H2H2H2-H3H3H3-H4H4H4-H5H5H5-H6H6>H6AVB1>AVBaAVB2>AVB2>AVB3AVB3>AVB4AVB4>C6C6C6-C5C5C5-C4C4C4-C3C3C3-C2C2C2-C1C1Ci-CTSCTSSFCTSMIDCTSPFOTHERTOTALSPERCENTS824gjgggg!i!r<.!888g8g888gg8gg888g8gg88gg!i!8gg8g24188~!i!k!880!<38g8g8g88gg8888g888gggigg888rg8!i!g888888.88g88g8rg88888ggg88888g8g88g8gg8g88g<i!8!i!8g<3g8g,g8g8888gg,ggg8g8rg<3g8ggrafg888ggri!gg8g8<3g8g8g!ifg8g8~8g888!i!8gg!i!8g888g888g88888gg8rgggg8g8gg88gg8.824g8g888g8ggg8g8g8g88g888g8rgg8888ggg<jf8gTABLE4(con't)PAGE21OF40

'lant-.BINNA'Outage-RGE-88BStamGenerator-BOD(eneral)/TMLOCATIONADS(2!ij28-3948-49,>49TOTAL2~5.6.7.B.18.11.12~13.14.15.16~17.18.19~1~22v24.25.27~28.Zr(j.rM2~3Z~Z4.25~>6.~i7~ZB.4g,41~HTSPFHTSMIDHTSSFHTS-HiHiHi-H2H2H2-HZH3H3-H4H4H4-H5HSH5-H6H6>H6AVB1>AVB1AVB2>AVB2>AVB~AVBZ>AVB4AVB4>C6C6C6-C5C5C5-C4C4C4-C3C3Ce-C2C2C2-CiCiCi-CTSCTSSFCTSMIDCTSPFOTHER8ggg!if8r(j8r(j888r(j!ifg88gggg8g888g!if8g8gg8ggg16g26gg8g88888g88gr(jr(fgg888g8!ifr(jg8ggg!ifg2g8881r(jg188g8g8ggggg8gr(fg8888V(j!if88gr(fr(jg8r(j1g1g81ggg8!ift(fgg88888rrj8gg8888g8g88ggr(fggr(f8gg88g8!ifggggg8ggg888gggg88gggg!if88r(jgr(f!ifcZjrr(jgg88g8ggg8g4488gg8g8r(f8g8ggg8ggg8gg888gg8gg182ggTOTALSPERCENT-g45Zi88.859~-48.8!if.!if8r(f.g76TABLE4(con't)PAGE22OF40 P4.0OBSERVATIONSTheresultsoftheexaminationindicatesthatintergranularattack(IGA)andintergranularstresscorrosioncracking(IGSCC)isstillactivewithinthetubesheetcreviceregionsontheinletsideofeachsteamgenerator.TheIGA/IGSCCisprimarilylocatedinthe"8"steamgeneratorwith41totalindicationsdetected.Inthe"A"steamgenerator?indicationsweredetected.Table5showsthesteamgeneratorIGAhistory.GINNA'SSTEAMGENERATORSCREVICECORROSIONINDICATIONHISTORY8-SteamGenerator(A-SteamGenerator)NotSizeable0-25'A26-50Ã51-75Ã76-100/oA-S/GTOTALB-S/GTOTALMarch1979December1979-0Apri11980November1980April1981February1982October1982April1983March1984March1985February1986192711(3)233(2)February198782(17)February198822(3)53(l)9(2)7(l)0(i)9(l)i4(i)8(l)i6(3)7(2)1627(l)2546(13)11(2)(0)(0)(0)(0)(0)(0)(1)(4)(1)(2)(5)(34)(7)3114'915341TOTALS195(25)27(3)49(2)87(8)149(16)(54)507TABLE5PAGE23OF40 4.0OBSERVATIONS(CO~~Thecauseoftheinlettubesheetcrevicecorrosionindicationsisintergranularattackandintergranularstresscorrosioncrackingofthemil-annealedInconel600tubematerial.Thisformofcorrosionistheresultofthetubesheetcrevicesforminganalkalineenvironment.Thiscreviceenvironmenthasdevelopedovertheyearsasdepositsandactivespecieslikesodiumandphosphate,havereacted,changinganeutralorinhibitedcreviceintotheaggressiveenvironmentthatpresentlyexist.Alargevolume,typically<20ÃTWD(ThroughWallDimension)wastagetypeconditionexistsjustabovethetubesheetsecondaryface.Asmallpercentageofthetubes,generallytowardthecenterofthebundle,havethiscondition.Severalofthesetubesdidhavepenetrations)20%TWD.Thesetubeswere.affectedbytheoriginalwaterchemistryconditionswhenphosphatewasusedasabufferingmediumandhavenotseenfurtherdegradationsince1975.Smallindicationsofprobablecopperdepositswerealsofoundinthetubesheetcreviceregionrandomlylocatedthroughouteachsteamgenerator.BasedonstudiesperformedwithcopperplatedonInconeltubingandthephaserelationshipsofthesesignalresponsesatthedifferentinspectionfrequenciestheindicationscanbeattributedtocopperdepositsandnotadefectcondition.Minordentinghasbeendetectedatthetubesheetsecondarysidefaceformanyyearsinbothsteamgenerators,primarilyontheinletside.Dentingwasalsodetectedatthe1st,2ndand6thtubesupportplatesrandomlythroughoutthegenerator,andinmostcaseswasofgreatermagnitudeinsizethanatthetubesheetsecondarysideface.Notubeswerefoundwhichobstructedthepassageofa0.720"O.D.probe.Ingeneral,minordistortionsofmostofthetubesupportplatesignalswereseen.PAGE24OF40 4.0OBSERVATIONSi'TThedentingphenomenonandminordistortionsatthetubesheetandsupportplatescanbeattributedtosecondarysidecorrosionproductbuildupintheannularregionbetweenthetubeoutsidesurfaceand.thecarbonsteelsupportmember.Comparisonswithpreviousdatadoesnotindicateanychangeintheextentormagnitudeofdentingfromwhathasbeendetectedbypreviousinspections.Severalindicationsweredetectedinthecoldlegsofthe"A"8"B"steamgeneratorsinandaroundtubeR21-C46.Areviewofpreviousyearsdatarevealedtheseindicationstobepresent.TheyappearasashallowIDindication(20Kwhichwereconfirmedvisuallytobeanexpansionofdiameterwithinthetubesheet.Thiswascausedbyacam-lockexpansiondevicewhichwasusedinearlieryearstosuspendleadblanketsfromthetubesheetprimaryface.Insummary,the"A"SteamGeneratorhadseven(7)tubesthatwerefoundtohavetubesheetcreviceindications.The"B"SteamGeneratorhadFortyone(41)tubesheetcreviceindications.Onetubeinthe"A"SteamGeneratorhadtwo(2)indicationsatthethirdandfourthanti-vibrationbarintersections.Theseindicationsaregreaterthan20/.butlessthantherepairlimit,andhavenotchangedsincethe1987Inspection.Thistubewillbereexaminedatthenextinspectiontoreconfirmnoactivefrettingweardamagemechanismexists.Inlightofthefactthatonlythistubeexhibitstheseindications,AVBfrettingwearisnotamajorconcern.PAGE25OF40 lI I4'5.0CORRECTIVEACTIOTable6hasbeengeneratedtoidentifythetubeswithcreviceindicationsorwithindicationswhichexceedtherepaircriteria.Thistablealsoshowsthelocationandaxialextentoftheindicationandwhatcorrectiveactionwastakenonthesetubes.Alltubesrequiringrepairhadhotlegtubesheetcreviceindicationswhichwereidentifiedbyanabsolutedriftsignal(ADS)ofthetIix-2Channeland/orquantifiableintergranularstresscorrosioncracking(IGSCC)indicationsbythe400kHzdata.Severalsquirreltype(SgR)indications,multipleIGSCC,werealsoidentifiedandhavebeenplacedonthelistoftubesrequiringcorrectiveaction.Atotalof15Tubeswerepluggedinthe"A"SteamGenerator.Oneplugisattributedtoasleeveinstalledduringthe1987AI80,whichmettheultrasonicandvisualexaminationacceptance,butdidnotshowanupperexpansionwitheddycurrentandwasthereforeremovedfromservice.SevenplugswereinstalledbasedontheWestinghouse'sevaluationofantivibrationbar(AVB)supportinconjunctionwiththeNorthAnnaTubeRuptureAnalysisforGinna.The"B"SteamGeneratorrequiredatotalof59tubesremovedfromservice.Oneplugisattributedtoasleeveidentifiedduringthe1987AISOashavingaveryminimalleakmostprobablyattheupperorlowerexplosivewelds.Thiswasdiscoveredduringa750psiHydrostaticPressureTest.TenplugswereinstalledbasedonWestinghouse'sevaluationofAVBsupportdata.OneofthetubesidentifiedwasremovedfromserviceforflowpeakingconsiderationsduetoAVBplacementsurroundingthattube(RllC73).EightothertubeswereremovedfromservicetoboxinpreviouslypluggedtubeswhereAVBsupportcouldnotbeverified.Table7andFigures1,2,3and4goesintofurtherdetailonantivibrationbarsupportdata.PAGE26OF40 5.0CORRECTIVEACTION(CON')EightWestinghouseExplosiveplugsidentifiedduringthehydrostaticpressuretestin1987ashavingaverysmallleakratewereremovedandreplacedwithwelded"TopHat"plugs.Twotubesin1987weremisspluggedonthehotlegRowIColumn58andRowIColumn48.Thecoldlegtubeendswerecorrectlyplugged.Hadeitherofthesetubesdegradationgonethroughwall100%,theleakageratewouldhavebeenminimalduetotheirlocationdeepinthetuhesheetcrevice.Thiserrorisbelievedtohavehappenedwhenthecomputercontrolledmanipulatortoolingencounteredthebio-environmentalledgelocatedonthedividerplatejustbelowthetubesheet,requiringmanualmanipulationforpluginstallation.Row1Column59andRow1Column49wereincorrectlypluggedinthehotleg.AGinnaSteamGeneratorTubeInspectionandCorrectiveActionHistoryhasbeentabulated.SeeTable8.PAGE27OF40 I401101ROLE'UBAN<TH)CVKRiO)oossssaYFebruary22eIISONl2'H+>+it+4cWILCOXCO,114111Pa9ePlant~GINNAStmGenerator:AREPORT-TUBESREQUIRINGCORRECTIVEACTIONSBRONCOLVOLTSDEBINDCHNLOCATIONCOMMENTSEXTENTTAPEPRB1111liii11ii1133262711141921272858~51!d.84Id.'991.5!38.534.916.152.!d396726121682813ADS8478ADSADSMM2M1M1M1M2M2HTSHTSHTSHTSHTSHTSHTS1!3.613.716.912.615.114.618.5PLGSCCPLGIGAPLGSCCPLGSCCPLGSCCPLBIGAPLGISASiTSPHSiTSPHIiTSPHQiTSPHOiTSPH56TSPH06TSPH47774i<f74!d74!d74!d74!d74!d74IATABLE6PAGE28OF40

<<<<>><<<<<<<<0<,C7<<<<A'<<<T<<<<VCRPlant-GINNAa,<<><<<<<<<<<<>>ayFebruary22708Ii~!4A<<<<<<<<<<<<<<tcWILCOXCO.>><<>><<<<<<SteamGeneratar-BREPORT:TUBESREQUIRINSCORRECTIVEACTIONSGROWCOLVOLTSDEBINDCHNLOCATIONCOMMENTSEXTENTPRB212f21nf212121212f2}21212121212121212121212121218383851428123}483848834362741173212182844f2142<d1282521322313637383848414143454648484849494951515255555555586162646566727381821.69g.831.528.918~764~96l.198~61'4.484.972~512~824~518.435.824.8.661.675.313.645.678.983'73712~233.624.492~8'.831.'343~53f,g24~547.673.582.171.582.58112114121773334.744'91835582473588735v4869449874367343421"5446474261481748765881685378SQRADSSQRADSADSADSADS91ADSADS687487ADS76ADS68ADSADSADS78ADSADBADBADS8584ADSADSADSADS53918285MMMMMMMMMM1111211MMM2MMMMMMMMMMM212221111M2M1M1M1HTSHTSHTSHTSHTSHTSHTSHTSHTSHTSHTSHTBHTSHTSHTSHTSHTSHTSHTSHTBHTBHTSHTSHTSHTSHTSHTSHTSHTSHTBHTSHTSHTSHTSHTSHTSHTSHTSHTSHTSHTS17.118.817.816.1}2.813.95.816.516~818,816.315.118.414.717~918.37.117.68.3}6.716.59~8}!i>~917.111.6214~815.215~213.317.312.99.513.912~96.816.517~215~916~7PLSPLGPLBPLGPLGPLGPLSPLGPLGPLBPLBPLBPLBPLGPLGPLGPLGPLBPLSPLBPLGPLGPLGPLBPLGPLBPLGPLBPLGPLGPLGPLGPLGPLBPLGPLBPLGPLSPLGPLGPLGSCCSCCSCCSCCSCCSCCIBASCCIGAIBAIGAIGASCCIBAIGASCCSCCSCCIGASCCIGASCCIBAISA,IGASCCIGAIGAIBAIGASCCSCCSCCIBAIGAIGAIBASCCSCCSCCSCC¹1TSPHNiTSPH¹}TSPH¹1TSPH¹1TSPHHTSH¹6TSPC¹6TSPH¹1TSPH¹1TSPH¹1TBPH¹1TSPH¹6TSPH¹6TSPH¹6TSPH¹6TSPH¹6TPSH¹6TSPH¹6TSPH¹6TSPH¹6TBPH¹1TBPH¹4TSPH¹6TSPH¹6TSPH¹6TSPH¹6TSPHN6TSPH¹6TSPHN5TSPH¹6TSPH¹6TSPH¹6TSPH¹6TSPH¹6TSPH¹6TSPH¹6TSPH¹1TSPH¹1TSPHN}TSPH¹1TSPH13134.131341345551166366666117777818181111111174374g74!d72874874872g74i<f72g74'!d72$72!374872<374!d74874!d74!d74874874872g74!d74<374<374g74!d74874874!374!374!d74<374!d74874874874874<d74!d748TABLE6(con't)PAGE29OF40 "A"STEAMGENERATORANTIVIBRATIQNBAREVALUATIONRESULTSROWCQL1212412512127125iu6TYPEOFPLUSINSTALLEDHOTLEGCOLDLESCE-MECHCE-SENTINELCE-MECHCE-SENTINELCE-MECHCE-SENTINELCE-MECHCE-SENTINELCE-MECHCE-SENTINELCE-t'IECHCE-SENTINELCE-MECHCE-SENTINELCOt'IMENTSNQAVBSUPPORTNOAVBSUPPORTNOAVBSUPPORTNOAVBSQPPORTNOAVBSUPPORTNOAVBSUPPORTNOAVBSUPPORTTABLE7PAGE30OF40 "B"STEAMGENERATORANTIVIBRATIONBAREVALUATIONRESULTSROWCOL41251261415312871288128912'P!3TYPEOFPLUGINSTALLEDHOTLEGCOLDLEGCE-MECHCE-SENTINELCE-MECHCE-SENTINELCE-MECHCE-.SENTINELCE-MECHCE-SENTINELCE-MECHCE-SENTINELCE-MECHCE-SENTINELCE-MECHCE-SENTINELCE-MECHCE-SENTINELCE-MECHCE-SENTINELCE-MECHCE-SENTINELCOMMENTSNOAVBSUPPORTNOAVBSUPPORT'OAVBSUPPORTNOAVBSOPPQRTNOAVBSUPPORTNQAVBSUPPORTNQAVBSUPPORTNOAVBSUPPORTNOAVBSUPPORTNQAVBSUPPORT1~~8814881588lh8817881888ia89148'7CE-MECHCE-MECHCE-MECH'CE-MECHCE-MECHCE-MECHCE-MECHCE-MECHCE-SENTINELCE-SENTINELCE-SENTINELCE-SENTINELCE-SENTINELCE-SENTINELCE-SENTINELCE-SENTINELBQXEXISTINGPLUGBOXEXISTINGPLUGBOXEXISTINGPLUGBOXEXISTINGPLUGBOXEXISTINGPLUGBOXEXISTINGPLUGBOXEXISTINGPLUGBOXEXISTINGPLUG117ZCE-MECHCE-SENTINELFLOWPEAKINGTABLE7(con0)PAGE31OF40 STEAMGENERATOR"A"TUBESRECEIVINGCORRECTIVEACTION-FEBRUARY$988PLANT:GDJNAGENERATOR:ATOTALTUBES:3Z60P~PLUGS(B)L~SENTINELPLUGSCILtT)TOTALTUBESASSIGNED:i5-45-40onC).~CC55II.~ICXoLLLLLL-30A-asCCIcc-20II-10ICl55IIIo)ICI~III5)ICIIICIICIICCIIICICCIInCOII55CllCIIelIIIEdCKXNOZZLEINLETnohLeg)-PrlmeryFeceCOLUNNSi'IGURE1NANNA'

'H'XIXX.HXXXHA0H'XXH0H.X0XXX$HXP'XX0000,X0...X0.~0.0,,X0,X0,:X0.N0A0,X0:,X0.X00::.X0,H0,H0,X0.X00.X0,00'0000'X0:805l5O66<<6>O01000d00600065.-"050000008000005000500+5~0":68='00000KZKRKRKSR56%6%65E5C%K!%KQKRESE%RHR%6REIE%8%E58%8%E%KHEXEQCXEEQ%5%525ISIIIILIIIIILIILLIIIlllllllllli-'0-0=~<<00~::~<O:-O;-.~-."Oq~-O>.O='O'-l=l-'0~'-0-'=0~~>i"i--i~~IiX0.'H0.'X0'X0'X0X0,,:X0<<X0X0i'H0",X0IX0"X0)X0:X0,X0'X0iH0,X0X0""X0,X0PyEX0IH0!X0"H0IX0"'X0,'X0"0,"00'00000000000000'000000000iO-OIO0'0'0"OOOO-'OOOOOOOdOOOOOOOQOd000046006000000400005OOOOOOOOO0~OOOOOOO0K~RX96lKlERElGRESKHGSKREZRKSE%QRCHCNCHCESCHCHCQCHCHEBHRKQKQKHKSEIKHCTILRQILIQSERRSILIIILILLIIILIIILLILREREERRRRR-~oo~o~:~-ooo~:~.e'ee'-e-oo-:o~'~o~~-o.ooooo~~H0:X0-X0.X0,X0XO'XO,X0;Xe.'H0>XO;XO.X0X0HO.X0,X0XOO0000000000X0:,X0H0,X0*:X0X0-~eiX0X0~X0;X0"X0:-00O000O00O0O0000O0ooooooooooooooeaooooeoooooeooo'=OOOOOOOQ'-"O~OOOOO~'=-~0009000000K&QKQRQQQQQQQKQQRQQRQRQQQQEQQKRIIKXQHQQQKBLQRRWRQLRQRLRXS80885%%5E5@%55@HK55RL8KhRRREERRRREERRRRERRRRRRRERRREEER STEAMGENERATOR"B"TUBESRECEIVINGCORRECTIVEACTION-FEBRUARY5988PLANT:GINNAGENERATOR:BTOTALTUBES:3260P~PLUGS(42)LSENTINELPLUGSC/L09)TOTALTUBESASSIGNED:6I-40~--30~CllQaiCllCaC.DIC.CIDOCCLiijiQ-25CIIcc-aoIIV-1510CIa-5ICIIICIIICICllIClIICIIICIIICIICIICDICIIICICIIOCCICIOINOZZLEINLET[HotLeg)-PrimaryFaceCOLUMNSFIGURE3-NANMAV k~

QptgFp,GlhlNA:8/G-8AVBPOSIONS~seuCiiv1210OOIt00080II2t24424542t4t222oetmYOOeeOoeOeOO*8*2000080808000880$'**0*808808050000800OSO8088$08$8SSL1IS.I8887868$8483828180'IS12,2IAI1.8I.112.1757473729.7BAI11.2D.7717068Bd6766$56483blAMMIAO1210L16160595857565554535246471.34845444342IIX11.3I@410.2IIL14140SgSdS711DS3635S4222~2222222222I2224~2222C)OIO1010800080108012I2Oa*ZOOOOCOOOOOOOOOO08*OOOSOO88808808CO00088880800808808888WIAOzMI-IAld12111024346422222088601'0'00000000I1888~0~800800~0242242222422IIOZQBtsQ8@~>>2~*2>>01Oyg0808088QOOQOQQQOogOQoooooocoooooeoooooooeoeoooooooLl31302828272S25242$22212D10181716151413121110887II.B%2.1654321IS.l12.12.8I14Hatea'ejecgcsaaehosedcnceseegraetAVBnhlbetccadw5nedIlbe.~f7INScssiunsbrpajaaian~bhesetxeeydng;su14elisnotoeesecLPhggedTube9OaredTubeFIGURE4 GINASTEAIIEBKRATORTUBEIttSPECTINAM)CORRECTIVEACTIONHISTORYN.TUBESINSPECIEDABHOTCOLDHOTCOLDFRIIIARYTOSECOttDARYLEAKAGEi6PtlTOTALTUBESREQUIRINGCORRECTIVEACTINABTYPEOFDEGRADATIN>48XREWIREDREPAIRSABtt8.TUBESPLU66EDA8HO.TUBESSLEEVEDABNO.PLUGGEDRETURHEDTOSERVICEWITHSLEEVEABNO.SLE&'ESNO.PMEDTOTALPLUGGEDTUBESPLlSGEDABABABTOTALSLEEVEDCMIEIITABIttFAC'LORYAPRIL1972HcKH1974HOV.1974NRCH1975JAH.1976FEB.1976AFRIL1976APRIL1977Jm.Y1977JAN~1978APRIL1978FEB.1979DEC.1979AFRIL1988ttOV.1988AY1981FEB.1982K'1982APRIL1983i%%21984HARCH1985FEB.1986FEB.1987FEB.198819583259516178143921744428931923192198928832681898516672391931442539,324732471825751525268MS31393253138325313832531375263138382313731377173135313531346233128831221517318237531513753141488314852631"989338968323893963M8739873883778288482723IMI28493251714375284932517143758895AS/68.891BS/G9.999BS/68.9128S/69.86BS/68.887BS/67898S/6I81924683981398I88I988I4I347998911221526815613319418I4277341WASTAGEWASTAGECRACKIHG/WASTA6EWASTAGEWASTA6ECRAIXIttGltASTAGEIDCRACKIHGCRNXIttGIWASTAGEIDCRACKIHGCRACKING/WASTAGEISA/WASTAGEA'PITTIttG/'8'IGA16AISA/WASTAGEIGA/NECH.DAtt16AIGA/SCCIGA/SXIGA/SCC/WASTAC<IGA/SCC/WASTAGE16AISK16A/SCCI8881992846118239291513I9588I15/IGA86813I138286816I28823853782491778418I8981982946II8239281513I8588I15869131348884918I338II249271872145889888888888989889984926249888999998989999516987496738888898S2898289888988888888I888399838I889I899S888888I819246881388I88I9898I281915888811221558156133484184242475598899889.98~8I8529163473588267663372477"I"I91783161493861593323628115133535278TABLE8 STEAtlGENERATORTUBEINSPECTINDCORRECTIVEACTIONHISTORYCONTSFR051TABLE8(1)PulledR15C55andR17C41fromthehotlegandR17C40fromthecoldlegtodetermineIGAconditionsinthe"B"steamgenerator.R17C41andECTindicationsatallfrequencies,R15C44hadjust100kHzAbsoluteECTindicationandR17C40hadnoECTindication.Bothhotlegtubeshadapproximately50%IGA,R17C41hada60/SCCindicationassociated,withtheIGA.(2)Manuallysleevedfive(5)tubeswithnickelplated-Inconel600therma'llytreatedsleeves.ThreetubeshadIGAindications,twootherswerepreventativelysleeved.(3)Sleeved16tubeswithco-extrudedsleeves,13withdefectswith3preventatively.PulledR21C46witha100kHzECTindications,R7C45andR28C45whichwereclean.Alltubespulledwerefromthehotleg.(4)RecoveryfromtheJanuary25,1982TubeRuptureEventincludedremoving26tubesectionsbyEDMandIDCuttersalongwiththeonetubepulledfromthesecondaryside.(5)ThefourtubesidentifiedwithIGAinthe"A"steamgeneratorweresleevedwith22"tubesheetsleeves.The78tubesidentifiedinthe"B"steamgeneratorwithIGAand/orSCCinthecrevicewererepairedasfollows:41tubesweresleevedwith36"brazedsleeves9tubesweresleevedwith28"brazedsleeves24tubesweresleevedwith22"tubesheetsleeves1tubeand2sleeveswerepluggedItubeR34C54waspulledformetallurgicalanalysisi'/'GE37OF40 ttSTEAMGENERATORTUBEINSPECTIONANDCORRECTIVEACTIONHISTORYCOMMENTSFROMTABLE8(6)ThetwotubesidentifiedwithIGAinthecreviceinthe"A"steamgeneratorinletweresleevedwith20"tubesheetsleeves.Oneindication)40ÃTWDintheU-bendwaspermanentlyplugged.The70tubesidentifiedinthe"B"steamgeneratorwererepairedasfollows:56tubesweresleevedwith20"tubesheetsleeves10tubesweresleevedwith36"brazedsleeves3tubesweremechanicallyplugged(CEremovable)1tubewasexplosivelyplugged1tubewassleevedwitha36"brazedsleeveduetothedominoeffect.(7)Thefivetubesidentifiedwithcreviceindicationsinthe"A"steamgeneratorinletweresleevedwith27"CombustionEngineeringSleeves(CE).OnetubeidentifiedwithgeneralO.D.indicationabovethesecondarysidetubesheetwasalsosleevedwithaCE27"sleeve.The57tubesidentifiedinthe"B"steamgeneratorwererepairedasfollows:27tubesweresleevedwithCE27"Sleeves27tubesweremechanicallyplugged(CEremovable)3CEMechanicalPlugsinstalledin1985wereremovedandsleevedwith27"sleevesThepresentsleeveinstallationstatusis83brazedsleeves,88tubesheetsleeves,30weldedCEsleevesinthe"B"steamgeneratorwith6tubesheetsleevesand6weldedCEsleevesinthe"A"steamgenerator.PAGE38OF40 0STEAMGENERATORTUBEINSPECTIONANDCORRECTIVEACTIONHISTORYCOMMENTSFROMTABLE8(8)The34tubesidentifiedwithcreviceindicationsinthe"A"steamgeneratorinletwererepairedasfollows:10tubesweremechanicallyplugged(CERemovable)24tubesweresleeved-withCE27"weldedsleevesThe153tubesidentifiedwithcreviceindicationsinthe"B'teamgeneratorinletwererepairedasfollows:72tubesweremechanicallyplugged(CERemovable)80tubesweresleevedwithCE27"weldedsleevesICEweldedsleeve(installedin1987)waspluggedwithaCEweldedsleeveplugduetorejectionoftheupperweld.Otherrepairsrequiredinthe"B"steamgeneratorareasfollows:2BSWtestbrazedsleeves(installedin1980)werepluggedduetothelossoftheprimarytosecondarypressureboundaryasdetectedbyHydroTest.5Westinghouseexplosiveplugsinstalledpriorto1987wereremovedduetoleakageandreplacedwithCEweldedplugs.1CEMechanicalplugonthecoldlegwasremovedandreplacedwithaCEMechanicalplug4CEweldedsleeves(installedin1987),areconsideredleaklimitersduetothemarginalacceptanceoftheupperwelds.(9)Fifteen(15)tubeswerepluggedinthe"A"steamgenerator.Thereasonsforrepairareasfollows:7Tubeshadtubesheetcreviceindications7TubesfornoconfirmedAVBSupport1CESleeveforunverifiedupperrollexpansionPAGE39OF40 STEAMGENERATORTUBEINSPECTION-ANDCORRECTIVEACTIONHISTORY-COMMENTSFROMTABLE8Fifty-nine(59)tubeswerepluggedinthe"B"steamgenerator.Thereasonsforrepairareasfollows:41Tubeshadtubesheetcreviceindications8TubestoBoxexistingplugswhereAVBsupportcouldnotbeverified.10TubesfornoconfirmedAVBSupport1Tubeforf'lowpeakingconsiderationduetoAVBplacement1BN<TubesheetSleeve8WestinghouseExplosivePlugswereremovedandreplacedwithWelded"TopHat".PlugsPAGE40OF40

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