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{{#Wiki_filter:REGULATORSINFORMATIONOISTRIBUTIONTEM(RIOS)ACCESSIONNBR:8106090597OOC~DATE:81/06/04NOTARIZED:NODOCKET&#xb9;FACIL:50387SusquehannaSteamElectricStationsUnit1>Pennsylva0944750388suaouenannasteamEleetntostation,Unit20Pennaylva~50003008AUTHaNAMEAUTHORAFFILIATIONCURTISEN~'Ill~PennsylvaniaPower8,LightCo.RECIP,VAHERECIPIEilTAFFILIATIONGRIEREB~H~Reaion1EPhiladelphianOfficeoftheDirector(81/03/01)SUBJECT;Finaldeficiencyreptrediscrepanciesbetweenhangerloadinqsonpipesupportdetaildrawingstressisometrics.Veri<icationprogramhasresolvedproblemforUnit1,ProcedurechangeseffectedforUEIit288OISTRISUTIORCOOS:8010SCOPIESRECEIVES:LTRlENCL4SIZE:TITLE:ConstructionOeficiencyReport(10CFR50.55E)NOTES:SendISE3copiesFSAR8a11amends81cy:B'ARL"GPM(L~RIB)SendI8E3copiesFSARlt,al1a~ends,1cyB'HRLRGPM(L.RIB)0500038705000388RECIPIENTIOCOOE/NAltlEACTION:A/0LICENSNGOilLICBR<2LAOoCOPIESLTTRENCL111RECIPIENTIOC05E/NAMELICBR&#xb9;2BC05STARKERS07COPIESLTTRENCL1INTERNAL(ASLBP/J~HARDEDO8,STAFF19HYI)/GEOBR22IE/EESMPA20OELO21GABR1ilSTANDROSOEV21111111111110/OIRHUMFAC15EQUIPQUALBR11IKE09LICQUALBR12VRCPOR02P1',REV13RLc,0111111111111111EXTERNAl;ACRSNSIC1608161611LPOR03TOTALNULiBEROFCOPIESREQUIRED!LTTRENCL IL'-'r~.I.~,NL4TWONORTHNINTHSTREET,ALLENTOWN,PA.18101PHONErt215)770~5151NORMANW.CURTISvicepreslcenI.Engineeringrsccnslruction-Nuclear7705381June4,1981Hr.BoyceH.GrierDirector,RegionIU.S.NuclearRegulatoryCommission631ParkAvenueKingofPruss'a,PA19406~f'(<<j.~>)'<<.'~6~Up~QQ'l%I3~cXARsscrnATOLL~1VisrN"~IcaiCNCCSUSQUE~iASTEANELECTRICSTATIONPENALREPORTOPADEFICIENCYRELATINGTOLOADDISCREPANCIESONPIPESUPPORTDETAILSERs100450/100508PILE840-4/900-10PLA-829Reerences:PLA-391(9/5/79)PLA-462(3/24/80)PLA-514(7/22/80)
 
==DearHr.Grier:==
ThisletterservestoprovidetheCommissionwithafinalreportofadeficiencyrelatingtodiscrepanciesbetweenhangerloadingss'nownonpipesupportdetaildrawingsascomparedtothoseshownonstessisometrics.Thisdef'ciencywasoriginallyreportedinPLA-391andtheinformationcontainedhereinissubmittedasafinalreportpursuanttotheprovisionsof10CFR50.55(e).Theattachmenttothislettercontainsadescriptionofthedeficiency,itscause,safetyimplications,andthecorrectiveactiontakenandplanned.WetrusttheCommissionwillfindtheinformationforwardedbythislettertobesatisfactory.Verytrulyyours,N.W.CurtisVicePresident-EngineeringaConstruction-Nucleargor95)/iPLWssabAttachmentPENNSYLVANIAPOWER8LIGHTCOMPANY Mr.BoyceH.Griercc:Mr.VictorStello(15)Director-Office.ofInspection6EnforcementU.S.NuclearRegulatoryCommissionWashington,D.C.20555Mr.G.McDonald,Director(1)OfficeofManagementInformation9ProgramContxolU.S.NucleaxRegulatoryCommissionWashington,DAC.20555Mr.GaryRhoadsU.S.NuclearRegulatoryCommissionP.O.Box52Shickshinny,PA18655 0AttachmenttoPLA-829DescriotionotheDeficiencDuringasystemwalkdownin1979,BechtelEngineeringdiscoveredciscrepanciesbetweenhangerloadsshownonstressisometr'csketchesandthecoxrespondingloadsshownonpipesupportdetails.Arandomreviewofselectedpipesupportdetailsandstressisometricsindi-catedthattheproblemwasnotgenericorwicespread,butseemedtoberestrictedtoisometr'csissuedpriortomid-1976.Averificationprogramwasinstituted.Asaresult.,somehardwarechangeswererequiredinseveralsafety-relatedsystemsinordertomeetFSARcommitments.AQAaud'ofthepipesuppotdesicnprocessrevealedthatsomepipesupportdetailslackedadequatesupportingcalculations.Insomecases,calculationsinsupportofdetaileddesignwerenotavailable.2.CauseThecausesforthedeficiencieswere:InacecuateinternaldesigncontrolandinterfacebetweenBechtelPlantDesignSubgroups.ChangesmacetothestressanalysisbytheStressGroupswerenotcoordinatedwiththePipeSupoortGroup.Thustnesechangeswerenotincorporatedintothepioesupportdesign.ii)InadequateimplementationofBechtelEngineeringProceduresManualr(EPM)recuirements.Calculationswerenotproperlyoreparedorwerenotgeneratedasrequired.Anals'sofSaetImplicationsTheverificationprogramrevealedthatsomepipesupportsweredesignedforloadsbelowthosespecifiedonthestessisometrics.Correctingthesediscrepanciesnecessitatedchangesintheactualhardwareforsomeofthepipesupports.Hadthissituationgoneuncorrected,somesupportsmighthavefa'ed,adverselyaffectingthesafeoperationoftheplant.Therefore,thisdeficiencyisconsideredtobereportableinaccordancewith10CFR50.55(e).sCorrectiveActionForUnit1,averificationpxogramwasestablishedandallStressisometricsandpipesupportdetailswerereviewed:i)Theloadsspecifiedonstressisometricsweereviewedandthepipesupportdetailswe:c-revisedtoreflectcorrectinformation.ii)Aco'mparisonwasmadebetweentherevisedloadsandtheloadsusedinhangerdesign.Therevisedloadsweethencomparedwithactualhardwarestrength.Page1of2 iii)Iftherevisedloadswerelowerthandesignor,ifhigherbutstillw'thinthecapacityofexistinghardware,noactionwasneeded.If,however,comparisonsshowedrevisedloadsbeyondhardwarestrength,hardwarechangeswererequired.ThisprogramorUnit1isnowcomplete.Therevisedpipesupportdetailshavebeenissuedforconstruction.ForUnit2,anexploratoryreviewshowedthattheproblemwasmuchsmallerinscopeandcouldbeintegratedintotheongoingprojectdesigneffort.AcompleteverificationforUnit2willbecompletedpriortofuelloadaspartofthehydrodynamicloadsanalys'sandas-builtreviewprograms.Incorrectingtheproblemofinadequatecalculationsforpipesupports,allNuclearClass1,2,and3SeismicCategoryIpipingsystemsarebe'nganalyzedtoverifytheadequacyofthedes'gnfortheactualas-builtcondition.Supportingcalculationswillbeperformedanddocumentedorallhangerswhichlackthem.AppendixBoftheBechtelEngineer'ngProceduresmanual.(EPM)hasbeenrevisedtorequiredesigncoordinationamongeachgroupinthePlantDesign..Thestressisometricsaresignedbyeachgrouppriortoissuancetoprecluderecurrenceofthed'screpantloadproblem.Alsotrainingsessionshavebeenheldw'hpipesupportgroupsupervisors,designesandengineerstoensurethattheyareawareoftnerecuirementstodocumen"calculat'onsasrequiredbytheEPH.Thesetrainingsessionsareongoing.5,ConclusionThever''cationprogramnasresolvedthisdiscrepantloadproblem.forUnit1.TheprocedurechangeseffectedwillensurethesituationdoesnotrecuronUnit2.Theproblemofhange"calculationdeficiencieswillberesolvedwithcompletionoftheas-builtdesignverificationprogramPage2of2
}}

Revision as of 10:29, 20 April 2018

Final Deficiency Rept Re Discrepancies Between Hanger Loadings on Pipe Support Detail Drawings Vs Stress Isometrics.Verification Program Has Resolved Problem for Unit 1.Procedure Changes Effected for Unit 2
ML18030A301
Person / Time
Site: Susquehanna  Talen Energy icon.png
Issue date: 06/04/1981
From: CURTIS N W
PENNSYLVANIA POWER & LIGHT CO.
To: GRIER B H
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
10CFR-050.55E, 10CFR-50.55E, PLA-829, NUDOCS 8106090597
Download: ML18030A301 (5)
v • d • e


Text

REGULATORSINFORMATIONOISTRIBUTIONTEM(RIOS)ACCESSIONNBR:8106090597OOC~DATE:81/06/04NOTARIZED:NODOCKET¹FACIL:50387SusquehannaSteamElectricStationsUnit1>Pennsylva0944750388suaouenannasteamEleetntostation,Unit20Pennaylva~50003008AUTHaNAMEAUTHORAFFILIATIONCURTISEN~'Ill~PennsylvaniaPower8,LightCo.RECIP,VAHERECIPIEilTAFFILIATIONGRIEREB~H~Reaion1EPhiladelphianOfficeoftheDirector(81/03/01)SUBJECT;Finaldeficiencyreptrediscrepanciesbetweenhangerloadinqsonpipesupportdetaildrawingstressisometrics.Veri<icationprogramhasresolvedproblemforUnit1,ProcedurechangeseffectedforUEIit288OISTRISUTIORCOOS:8010SCOPIESRECEIVES:LTRlENCL4SIZE:TITLE:ConstructionOeficiencyReport(10CFR50.55E)NOTES:SendISE3copiesFSAR8a11amends81cy:B'ARL"GPM(L~RIB)SendI8E3copiesFSARlt,al1a~ends,1cyB'HRLRGPM(L.RIB)0500038705000388RECIPIENTIOCOOE/NAltlEACTION:A/0LICENSNGOilLICBR<2LAOoCOPIESLTTRENCL111RECIPIENTIOC05E/NAMELICBR¹2BC05STARKERS07COPIESLTTRENCL1INTERNAL(ASLBP/J~HARDEDO8,STAFF19HYI)/GEOBR22IE/EESMPA20OELO21GABR1ilSTANDROSOEV21111111111110/OIRHUMFAC15EQUIPQUALBR11IKE09LICQUALBR12VRCPOR02P1',REV13RLc,0111111111111111EXTERNAl;ACRSNSIC1608161611LPOR03TOTALNULiBEROFCOPIESREQUIRED!LTTRENCL IL'-'r~.I.~,NL4TWONORTHNINTHSTREET,ALLENTOWN,PA.18101PHONErt215)770~5151NORMANW.CURTISvicepreslcenI.Engineeringrsccnslruction-Nuclear7705381June4,1981Hr.BoyceH.GrierDirector,RegionIU.S.NuclearRegulatoryCommission631ParkAvenueKingofPruss'a,PA19406~f'(<<j.~>)'<<.'~6~Up~QQ'l%I3~cXARsscrnATOLL~1VisrN"~IcaiCNCCSUSQUE~iASTEANELECTRICSTATIONPENALREPORTOPADEFICIENCYRELATINGTOLOADDISCREPANCIESONPIPESUPPORTDETAILSERs100450/100508PILE840-4/900-10PLA-829Reerences:PLA-391(9/5/79)PLA-462(3/24/80)PLA-514(7/22/80)

DearHr.Grier:

ThisletterservestoprovidetheCommissionwithafinalreportofadeficiencyrelatingtodiscrepanciesbetweenhangerloadingss'nownonpipesupportdetaildrawingsascomparedtothoseshownonstessisometrics.Thisdef'ciencywasoriginallyreportedinPLA-391andtheinformationcontainedhereinissubmittedasafinalreportpursuanttotheprovisionsof10CFR50.55(e).Theattachmenttothislettercontainsadescriptionofthedeficiency,itscause,safetyimplications,andthecorrectiveactiontakenandplanned.WetrusttheCommissionwillfindtheinformationforwardedbythislettertobesatisfactory.Verytrulyyours,N.W.CurtisVicePresident-EngineeringaConstruction-Nucleargor95)/iPLWssabAttachmentPENNSYLVANIAPOWER8LIGHTCOMPANY Mr.BoyceH.Griercc:Mr.VictorStello(15)Director-Office.ofInspection6EnforcementU.S.NuclearRegulatoryCommissionWashington,D.C.20555Mr.G.McDonald,Director(1)OfficeofManagementInformation9ProgramContxolU.S.NucleaxRegulatoryCommissionWashington,DAC.20555Mr.GaryRhoadsU.S.NuclearRegulatoryCommissionP.O.Box52Shickshinny,PA18655 0AttachmenttoPLA-829DescriotionotheDeficiencDuringasystemwalkdownin1979,BechtelEngineeringdiscoveredciscrepanciesbetweenhangerloadsshownonstressisometr'csketchesandthecoxrespondingloadsshownonpipesupportdetails.Arandomreviewofselectedpipesupportdetailsandstressisometricsindi-catedthattheproblemwasnotgenericorwicespread,butseemedtoberestrictedtoisometr'csissuedpriortomid-1976.Averificationprogramwasinstituted.Asaresult.,somehardwarechangeswererequiredinseveralsafety-relatedsystemsinordertomeetFSARcommitments.AQAaud'ofthepipesuppotdesicnprocessrevealedthatsomepipesupportdetailslackedadequatesupportingcalculations.Insomecases,calculationsinsupportofdetaileddesignwerenotavailable.2.CauseThecausesforthedeficiencieswere:InacecuateinternaldesigncontrolandinterfacebetweenBechtelPlantDesignSubgroups.ChangesmacetothestressanalysisbytheStressGroupswerenotcoordinatedwiththePipeSupoortGroup.Thustnesechangeswerenotincorporatedintothepioesupportdesign.ii)InadequateimplementationofBechtelEngineeringProceduresManualr(EPM)recuirements.Calculationswerenotproperlyoreparedorwerenotgeneratedasrequired.Anals'sofSaetImplicationsTheverificationprogramrevealedthatsomepipesupportsweredesignedforloadsbelowthosespecifiedonthestessisometrics.Correctingthesediscrepanciesnecessitatedchangesintheactualhardwareforsomeofthepipesupports.Hadthissituationgoneuncorrected,somesupportsmighthavefa'ed,adverselyaffectingthesafeoperationoftheplant.Therefore,thisdeficiencyisconsideredtobereportableinaccordancewith10CFR50.55(e).sCorrectiveActionForUnit1,averificationpxogramwasestablishedandallStressisometricsandpipesupportdetailswerereviewed:i)Theloadsspecifiedonstressisometricsweereviewedandthepipesupportdetailswe:c-revisedtoreflectcorrectinformation.ii)Aco'mparisonwasmadebetweentherevisedloadsandtheloadsusedinhangerdesign.Therevisedloadsweethencomparedwithactualhardwarestrength.Page1of2 iii)Iftherevisedloadswerelowerthandesignor,ifhigherbutstillw'thinthecapacityofexistinghardware,noactionwasneeded.If,however,comparisonsshowedrevisedloadsbeyondhardwarestrength,hardwarechangeswererequired.ThisprogramorUnit1isnowcomplete.Therevisedpipesupportdetailshavebeenissuedforconstruction.ForUnit2,anexploratoryreviewshowedthattheproblemwasmuchsmallerinscopeandcouldbeintegratedintotheongoingprojectdesigneffort.AcompleteverificationforUnit2willbecompletedpriortofuelloadaspartofthehydrodynamicloadsanalys'sandas-builtreviewprograms.Incorrectingtheproblemofinadequatecalculationsforpipesupports,allNuclearClass1,2,and3SeismicCategoryIpipingsystemsarebe'nganalyzedtoverifytheadequacyofthedes'gnfortheactualas-builtcondition.Supportingcalculationswillbeperformedanddocumentedorallhangerswhichlackthem.AppendixBoftheBechtelEngineer'ngProceduresmanual.(EPM)hasbeenrevisedtorequiredesigncoordinationamongeachgroupinthePlantDesign..Thestressisometricsaresignedbyeachgrouppriortoissuancetoprecluderecurrenceofthed'screpantloadproblem.Alsotrainingsessionshavebeenheldw'hpipesupportgroupsupervisors,designesandengineerstoensurethattheyareawareoftnerecuirementstodocumen"calculat'onsasrequiredbytheEPH.Thesetrainingsessionsareongoing.5,ConclusionThevercationprogramnasresolvedthisdiscrepantloadproblem.forUnit1.TheprocedurechangeseffectedwillensurethesituationdoesnotrecuronUnit2.Theproblemofhange"calculationdeficiencieswillberesolvedwithcompletionoftheas-builtdesignverificationprogramPage2of2

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