ML17037B871

Nine Mile Point Unit 2 - Letter Regarding a Breakdown in the Graver Tank & Manufacturing Company'S QA Program and an Enclosed Report Providing a Description of the Deficiency, Analysis of the Safety Implications, and Corrective Action Taken

ML17037B871
Person / Time
Site:	Nine Mile Point
Issue date:	02/06/1978
From:	Rhode G K Niagara Mohawk Power Corp
To:	Carlson R T NRC/IE, NRC Region 1
References
Download: ML17037B871 (10)

Text

REGULAT'ORYINFQRNATIQNDISTRIBUTI'QNSYSTEH(RIDS)DISTRI6UTIOh'OR INCOMINGMATERIAL50i410RECgCARLSONRTQRGSRHQOEGKDQCDATES02/06/78NRCNIAGARAMOHAWKPWRDATERCYDS02/13/78DQCTYPE!I.ETTERNOTARIZED INQCOPIESRECEIVEDSUBjlE('T iLTR0ENCI.1FINAl,DEFICIENCY REPTINCL.UDING CORRECTIVE ACTIONSREBREAKDOWN INTHEGRAVENlANK8MANUFACTURING CO'lSQUALITYASSURANCE PROGRAMCQNCEANING CONDITION 1NVOLYING FIELDERECTIONIOFUNXT2CONTAINVENT LINER~Pl.ANTNAMECANINENILEPOINT"UNIT'2REVIEWERINITIAL!5JHDISTRIBUTOR INITIALi*w**+4w**~*WAN*aw DISTRIBUTION OFTHISNATERIALISASFOLLOWS-*a4eew>*4*wAaa*4~a CONSTRUCTION DEFICIENCY REPORT(10CFR50,55(E),

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.Mr.,R.T.Garison,ChiefReactorConstruction andEngineering SupportBranchU.S.NuclearRegulatory Commission 631ParkAvenueKingofPrussia,Pennsylvania 19406'<~ling~~iS~p~i1918CI1O8Re:.NineMilePointUnit2DocketNo.50-410

DearMr.Garison:

OnDecember.

23,1977,yourstaffwas.advisedofabreakdown intheGraverTank&Manufacturing Company's QualityAssurance Program.Thiscondition involvedfielderectionoftheNine'ilePointUnit2containment liner.Asindicated in.ourJanuary24,1978letter,attachedisafinalreportproviding adescription ofthedeficiency, andanalysisofthesafetyimplications andthecorrective actiontaken.Thisreportissubmitted inaccordance withSection50.55(e)(3) oftheCommission's regulations.-

Verytrulyyours,NIAGARAMOHAWKPOWERCORPORATION I7Geral.K.Rhod,VicePresident SystemPro)ctManagement PEF/szd~o46OO32Attachment Xc:.ErnstVolgenauInspection

&Enforcement BranchU.S.NuclearRegulatory Commission Washington, D.C.20555Boaq0/

I~~gog Stone.&Webster'.s FieldQualityControlgroupinaccordance withtheirQualityVerification ofGraver'sQualityProgramissuedsevenunsatis-factoryInspection ReportsandtwoNonconformance andDisposition ReportsduringafiveweekperiodendingDecember15,1977.Areviewofthesereportsrevealedthefollowing deficiencies:

A..Contraryto10CFR50AppendixBCriterion VI(DOCUMENT CONTROL)work,wasbeingperformed utilizing aprocedure, fortemporary attachment removalthat,hadnotbeenapprovedbyStoneandWebsterEngineering.

B.Contraryto10CFR50AppendixB.Criterion IX-(CONTROL OFSPECIALPROCESSES) aweldingprocedure wasbeingusedthatwasnotqualified.

fortheapplication (i.e.,weldingwasbeingperformed oncladdingthinnerthanspecified intheprocedure).

Inaddition,

required, nondestructive testingwasnotbeingperformed toverifydefectremovalpriortowelding.C.Contraryto10CFR50AppendixBCriterion X(INSPECTION),

Graver'sQualityControlgroupwasnotdocumenting theirinspection (reviewandacceptance) ofrepairweldsperformed asaresultofremovaloftemporary attachments.

D.Contraryto10CFR50AppendixB.Criterion XVI(CORRECTIVE ACTION),measureswerenotinitiated tocorrectconditions identified byStoneandWebsterFieldQualityControlaboveasbeingadversetoquality.After.theyhadbeeninstructed todosobyStoneand.Webster Engineering, Graverdid.notdocumenttheirinspection ofrepairwelds,usetheprocedure identified byStoneandWebsterasapplicable forclad'less than1/16"thick,andtheydidnotfollowtheirprocedure fortemporary attachment removalasapproved.

II.SAFETYANALYSISTheprimarycontainment cladmaterialanditsfunctionaredescribed inSection5.0ofthePreliminary SafetyAnalysisReport.Thecladformsanintegral, partofthebasematerialoftheprimarycontainment liner.Thecladsurfaceisdesignedto.providecorrosion protection ofthebasematerialandpreclude.

contamination.

fromthesuppression poolwater.Thecladdingisnotrequiredfor.thedesignstrengthorleakintegrity oftheprimarycontainment liner.Theweldrepaircavitiesdidnotexposethecarbonsteelbasemetal.Therefore, this,doesnotresultinasafetyhazardtoNineMilePointUnit2.Theweldrepairsdonotjeopardize thecorrosion resistant performance ofthecladortheprimarycontainment linerdesignrequirements.

E~f III.CORRECTIVE ACTIONThefollowing actionshavebeentakentocorrectthedeficiencies identified inSectionI:A.Aprocedure fortemporary attachment removalhasbeenreviewedandapprovedasofNovember22,1977.B.Stone.andWebsterhasreviewedtheapplicability ofweldingprocedures.

forcladsurfaceweldrepairs.Theappropriate weldingprocedure inquestionwasfoundacceptable asitwasinaccordance withtheASMEcoderequiredbypurchasespecification.

Also,cladsurfaceweldrepairswereallliquidpenetrant inspected andaccepted.

C.Theprocedure fortemporary attachment removalprovidesfortheinitiation ofatemporary welddatasheetto,document theweldprocedure usedandQualityAssurance sign-off.

D.OnJanuary4,.1978,ameetingwasheldatStoneandWebster'CherryHillOperations CenterwithGraverManagement.

todiscussthese'eficiencies.

Asaresultofthismeeting,thefollowing actionshaveorwillbetaken:1.Graverhaspreparedasupplement totheNineMileQualityAssurance Manualwhich,has beenreviewedandaccepted.

Itisanticipated thatthissupple-mentwillbeissuedshortly.Thissupplement establishes asystemtoassurethatconditions adversetoqualitysuchasaudit,findings, deficiencies, deviations fromprocedures,

failures, malfunctions andnonconformances areidentified, corrected anddocumented.

Theprocedure willrequirearesponsefromtheaffectedpartyandwillalsorequireperiodicmanagement reviewofcorrective actions.

zr 2.Graverwillbesupplementing itsgQuality Assurance activities byaddingapermanent QualityAssurance representative totheNineMilefieldcrew.InadditiontohisdefinedQualityAssurance responsibilities, hewillprovideanadditional~intertace>with<Stone andWebsterFieldQualityControl.~~~"<"~03.AsofJanuary16,1978,GraverhasassignedaQualityAssurance Management individual totheNineMilesiteonatemporary basis.Thisindividual willreviewtheactivities atthesiteand,reporttoGravermanagement ontheprogressofQualityAssurance andsiteactivities.

4.Theappropriate Construction Interface Procedure willberevisedtoreflectaworkableInspection ReportandNonconformance

&Disposition Reportinterface betweenGraverandStoneandWebster.StoneandWebsterFieldQualityControlwillincreasetheirsurveillance oftheGraverQualityAssurance ProgramandreporttoStoneandWebsterProjectManagement andNiagaraMohawkontheprogress, andeffectiveness ofGraver'sQualityAssurance siteactivities.

RECEIVEOOOCOHEHTCONIROLGEST19tGFB15PQ200U.S.NRCOISTRIBUTION SERVICESBRANCH