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{{#Wiki_filter:REGULATOYINFORMATIONDISTRIBUTIONSTEM(RIDS)ACCESSIONNBR:7909170188DOC~DATE!79/09/05-NOTARIZED!NODOCKETFACILiS~-usquehannaSteamElectricStationrUnit1~Pennsylva0500038750<<388SsquehannaSte~mElectricStationrUnit2iPennsylva05000388AU~NAMAUTHORAIFILIATIONCURISsN~siI~PennsylvaniaPower8LightCo,RECIP~NAMERECIPIENTAFFILIATIOIVGRIKRiB,H~Region1gPhi'IadelphiaiOfficeoftheDirectorIDCODE/NAME.LTT15BCLmR~121AO4~g1PM~/8/Eg20LAz>ufgWH1ACTION!
{{#Wiki_filter:REGULATOYINFORMATION DISTRIBUTION STEM(RIDS)ACCESSION NBR:7909170188 DOC~DATE!79/09/05-NOTARIZED!
NODOCKETFACILiS~-usquehanna SteamElectricStationrUnit1~Pennsylva 0500038750<<388Ssquehanna Ste~mElectricStationrUnit2iPennsylva 05000388AU~NAMAUTHORAIFILIATION CURISsN~siI~Pennsylvania Power8LightCo,RECIP~NAMERECIPIENT AFFILIATIOIV GRIKRiB,H~Region1gPhi'IadelphiaiOfficeoftheDirectorIDCODE/NAME
.LTT15BCLmR~121AO4~g1PM~/8/Eg20LAz>ufgWH1ACTION!


==SUBJECT:==
==SUBJECT:==
Interimdeficiencyreptrepipe.supportdesigndrawingsreleasedforfabrication8installationwhichlackedrevisedpipingsysstressvaluesdevelopedsubsequenttoinitialstresscalculations,Finalrepttobesubmittedby800301sDISTRIBUTIONCODE:BOISSCOPIESRECEIVEDilTRCENCl+SIZEiTITLKiConstructionDeficiencyReport(10CFR50~55E)NOTES:r<~><~~y~a=as.=.CC~~~~m..r.e~y~".~~P.~e>W<RECIPIENTCOPIKSRECIPIEiVTCOPIESIDCODE/NAMEI.TTRENLRENCL"INTE'RNAL!0~III8E08MPA10QAB12JORDANiK/IK16AD'FORENGR17ADREACSFTY23OELDDIRKCTORDSEILCSYSBRMECHENGBRSTRUCTENGBR,EXTERNAL!03LPDR24ACRS1211111111111111116102NRCPDR07EDO8STAFF09DKPYDIRDVM11STANDRDSDEV13FIKLDCOOR/IE17ADPLANTSYS22DIRDPMAD/SITKTECHGEOSCIENCESBHMATLEiVGBRSHANAUKR04NSIC11111111111TOTALNUMBEROFCOPIKSRKQUIRKO!LTTR46ENCL ppal.TWONORTHNINTHSTREET.ALLENTOWN,PA.18'101PHONE:(215)821-5151NORMANW.CURTISVicePresident.EngineenngILConstructrcn821-5381September5,1979Mr.Boyce-H.GrierDirector,RegionIU.S.NuclearRegulatoryCommission631ParkAvenueKingofPrussia,Pennsylvania19406SUSQUEllANNASTEAMELECTRICSTATIONINTERIMREPORTOFADEFICIENCYZNPIPESUPPORTDESIGNDRAWINGSRELEASEDFORFABRICATIONANDINSTALLATIONERs100450/100508FILE840-4PLA-391
Interimdeficiency reptrepipe.supportdesigndrawingsreleasedforfabrication 8installation whichlackedrevisedpipingsysstressvaluesdeveloped subsequent toinitialstresscalculations,Final repttobesubmitted by800301sDISTRIBUTION CODE:BOISSCOPIESRECEIVEDilTR CENCl+SIZEiTITLKiConstruction Deficiency Report(10CFR50~55E)NOTES:r<~>
<~~y~a=as.=.CC~~~~m..r.e
~y~".~~P.~e>W<
RECIPIENTCOPIKSRECIPIEiVTCOPIESIDCODE/NAME I.TTRENLRENCL"INTE'RNAL!
0~III8E08MPA10QAB12JORDANiK/IK 16AD'FORENGR17ADREACSFTY23OELDDIRKCTORDSEILCSYSBRMECHENGBRSTRUCTENGBR,EXTERNAL!
03LPDR24ACRS1211111111111111116102NRCPDR07EDO8STAFF09DKPYDIRDVM11STANDRDSDEV13FIKLDCOOR/IE17ADPLANTSYS22DIRDPMAD/SITKTECHGEOSCIENCES BHMATLEiVGBRSHANAUKR04NSIC11111111111TOTALNUMBEROFCOPIKSRKQUIRKO!
LTTR46ENCL ppal.TWONORTHNINTHSTREET.ALLENTOWN, PA.18'101PHONE:(215)821-5151NORMANW.CURTISVicePresident.Engineenng ILConstructrcn 821-5381September 5,1979Mr.Boyce-H.GrierDirector, RegionIU.S.NuclearRegulatory Commission 631ParkAvenueKingofPrussia,Pennsylvania 19406SUSQUEllANNA STEAMELECTRICSTATIONINTERIMREPORTOFADEFICIENCY ZNPIPESUPPORTDESIGNDRAWINGSRELEASEDFORFABRICATION ANDINSTALLATION ERs100450/100508 FILE840-4PLA-391


==DearMr.Gr'ier:==
==DearMr.Gr'ier:==
'ThisservestoconfirminformationprovidedtoR.Gall'o,NRC,ReactorInspectorbyA.R.Sabol,PPSL,onAugust2,'1979regardingthesubjectdeficiencywhichisdeemedreportableunder10CFR50.55(e).ThedeficiencyinvolvesdiscrepanciesbetweentheBechtelPlantDesignGroup'sfinalizedstressanalysescalculations'ndtheloadswhichwer'eusedinthedesignofpipesupportdetaildrawingswhichweiefabricatedand.releasedforinstallationduringtheconstructionoftheplant.Thereleasedpipesupportdetaildrawingsdidnothavefactoredintothemrevisedpiping-systeIILstressvalueswhichhadbeendeveloped,subsequenttotheinitialpipingsystemstresscalculations.hAllofthesafetyimplicationsarenotknownatthistimeyhowever,ourbestestimateisthattherewillbeapproximately1000pipesupportswhichmayrequiredesignchanges.Hadthedeficienciesgoneundetected,itis.anticipatedthatsomesupportscouldhavebeenoverstressedbeyondallowabledesignlimitsbyanorderof100percentorgreater.TheconditionwasfirstdetectedbyBechtelengineeringpersonnelduringpreparationsforpipingsystemsstresswalkdownsinthefirstquarterof1979.Atthattimerareviewperformedonthebasisofarandomsampleindicatedthattheproblemwasnotgenericorwidespread.Theproblemappearedtohavebeenconfinedtocalculationswhichhadbeenperformedpriortomid-1976andsubse-,quentlyrevised.>'~,oPENNS'YLYANIAPOWER8LIGHTCOMPANYf90 Mr.BoyceH.GrierSeptember5,1979Subsequently,inpreparationforturnoverofthefeedwatersystemtostartup,arelativelylargenumberofpipesupportdetails,.approximately40outof276,whichwerefoundtobediscrepant.Therefore,inordertofacilitateasorderlyandcompleteaspossibleturnoverofsystemsforstartup,athoroughverificationprogramhasbeeninstituted.Theverificationprogram,whichinstitutedfollowingdiscoveryofthe.condition,willcoverallforce,'omentcalculationsandtheirrelatedpipesupportdetails.On,July25,1979,BechtelQAidentifiedtheconditioninitsMCAR-1-36requestingthatBechtelengineeringevaluatetheconditionforreportability.BaseduponBechtelengineering'sconclusionthattheconditionisreportable,afinalreporttoMCAR-1-36willbesubmittedtoPPaLbyDecember28,1979.Following,PPGLwillsubmititsfinalreportofsaiddeficiencytothe~CommissionbyMarch1,1980.Verytrulyyours,N.W.CurtisVicePresident-Engineering6ConstructionARS:mcb.cc:.Mr.RobertM.GalloU.S.NuclearRegulatoryCommission~P.0Box52Shickshinny,Pennsylvania18655Mr.VictorStello(15)Director&fficeofInspectionIEnforcementU.S.NuclearRegulatoryCommission-Washington,D.C.20555Mr.G.,McDonaldOfficeofManagementInformationaProgramControlU.S.NuclearRegulatoryCommissionWashington,D.C.20555  
'Thisservestoconfirminformation providedtoR.Gall'o,NRC,ReactorInspector byA.R.Sabol,PPSL,onAugust2,'1979regarding thesubjectdeficiency whichisdeemedreportable under10CFR50.55(e).Thedeficiency involvesdiscrepancies betweentheBechtelPlantDesignGroup'sfinalized stressanalysescalculations'nd theloadswhichwer'eusedinthedesignofpipesupportdetaildrawingswhichweiefabricated and.released forinstallation duringtheconstruction oftheplant.Thereleasedpipesupportdetaildrawingsdidnothavefactoredintothemrevisedpiping-systeIIL stressvalueswhichhadbeendeveloped, subsequent totheinitialpipingsystemstresscalculations.
hAllofthesafetyimplications arenotknownatthistimeyhowever,ourbestestimateisthattherewillbeapproximately 1000pipesupportswhichmayrequiredesignchanges.Hadthedeficiencies goneundetected, itis.anticipated thatsomesupportscouldhavebeenoverstressed beyondallowable designlimitsbyanorderof100percentorgreater.Thecondition wasfirstdetectedbyBechtelengineering personnel duringpreparations forpipingsystemsstresswalkdowns inthefirstquarterof1979.Atthattimerareviewperformed onthebasisofarandomsampleindicated thattheproblemwasnotgenericorwidespread.
Theproblemappearedtohavebeenconfinedtocalculations whichhadbeenperformed priortomid-1976andsubse-,quentlyrevised.>'~,oPENNS'YLYANIA POWER8LIGHTCOMPANYf90 Mr.BoyceH.GrierSeptember 5,1979Subsequently, inpreparation forturnoverofthefeedwater systemtostartup,arelatively largenumberofpipesupportdetails,.approximately 40outof276,whichwerefoundtobediscrepant.
Therefore, inordertofacilitate asorderlyandcompleteaspossibleturnoverofsystemsforstartup,athoroughverification programhasbeeninstituted.
Theverification program,whichinstituted following discovery ofthe.condition, willcoverallforce,'omentcalculations andtheirrelatedpipesupportdetails.On,July25,1979,BechtelQAidentified thecondition initsMCAR-1-36 requesting thatBechtelengineering evaluatethecondition forreportability.
BaseduponBechtelengineering's conclusion thatthecondition isreportable, afinalreporttoMCAR-1-36 willbesubmitted toPPaLbyDecember28,1979.Following, PPGLwillsubmititsfinalreportofsaiddeficiency tothe~Commission byMarch1,1980.Verytrulyyours,N.W.CurtisVicePresident-Engineering 6Construction ARS:mcb.cc:.Mr.RobertM.GalloU.S.NuclearRegulatory Commission
~P.0Box52Shickshinny, Pennsylvania 18655Mr.VictorStello(15)Director&ffice ofInspection IEnforcement U.S.NuclearRegulatory Commission-Washington, D.C.20555Mr.G.,McDonaldOfficeofManagement Information aProgramControlU.S.NuclearRegulatory Commission Washington, D.C.20555  
~IIEI}}
~IIEI}}

Revision as of 03:23, 29 June 2018

Interim Deficiency Rept Re Pipe Support Design Drawings, Released for Fabrication & Installation,Which Lacked Revised Piping Sys Stress Values Developed Subsequent to Initial Stress Calculations.Final Rept to Be Submitted by 800301
ML18031A265
Person / Time
Site: Susquehanna  
Issue date: 09/05/1979
From: CURTIS N W
PENNSYLVANIA POWER & LIGHT CO.
To: GRIER B H
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
PLA-391, NUDOCS 7909170188
Download: ML18031A265 (4)
v • d • e


Text

REGULATOYINFORMATION DISTRIBUTION STEM(RIDS)ACCESSION NBR:7909170188 DOC~DATE!79/09/05-NOTARIZED!

NODOCKETFACILiS~-usquehanna SteamElectricStationrUnit1~Pennsylva 0500038750<<388Ssquehanna Ste~mElectricStationrUnit2iPennsylva 05000388AU~NAMAUTHORAIFILIATION CURISsN~siI~Pennsylvania Power8LightCo,RECIP~NAMERECIPIENT AFFILIATIOIV GRIKRiB,H~Region1gPhi'IadelphiaiOfficeoftheDirectorIDCODE/NAME

.LTT15BCLmR~121AO4~g1PM~/8/Eg20LAz>ufgWH1ACTION!

SUBJECT:

Interimdeficiency reptrepipe.supportdesigndrawingsreleasedforfabrication 8installation whichlackedrevisedpipingsysstressvaluesdeveloped subsequent toinitialstresscalculations,Final repttobesubmitted by800301sDISTRIBUTION CODE:BOISSCOPIESRECEIVEDilTR CENCl+SIZEiTITLKiConstruction Deficiency Report(10CFR50~55E)NOTES:r<~>

<~~y~a=as.=.CC~~~~m..r.e

~y~".~~P.~e>W<

RECIPIENTCOPIKSRECIPIEiVTCOPIESIDCODE/NAME I.TTRENLRENCL"INTE'RNAL!

0~III8E08MPA10QAB12JORDANiK/IK 16AD'FORENGR17ADREACSFTY23OELDDIRKCTORDSEILCSYSBRMECHENGBRSTRUCTENGBR,EXTERNAL!

03LPDR24ACRS1211111111111111116102NRCPDR07EDO8STAFF09DKPYDIRDVM11STANDRDSDEV13FIKLDCOOR/IE17ADPLANTSYS22DIRDPMAD/SITKTECHGEOSCIENCES BHMATLEiVGBRSHANAUKR04NSIC11111111111TOTALNUMBEROFCOPIKSRKQUIRKO!

LTTR46ENCL ppal.TWONORTHNINTHSTREET.ALLENTOWN, PA.18'101PHONE:(215)821-5151NORMANW.CURTISVicePresident.Engineenng ILConstructrcn 821-5381September 5,1979Mr.Boyce-H.GrierDirector, RegionIU.S.NuclearRegulatory Commission 631ParkAvenueKingofPrussia,Pennsylvania 19406SUSQUEllANNA STEAMELECTRICSTATIONINTERIMREPORTOFADEFICIENCY ZNPIPESUPPORTDESIGNDRAWINGSRELEASEDFORFABRICATION ANDINSTALLATION ERs100450/100508 FILE840-4PLA-391

DearMr.Gr'ier:

'Thisservestoconfirminformation providedtoR.Gall'o,NRC,ReactorInspector byA.R.Sabol,PPSL,onAugust2,'1979regarding thesubjectdeficiency whichisdeemedreportable under10CFR50.55(e).Thedeficiency involvesdiscrepancies betweentheBechtelPlantDesignGroup'sfinalized stressanalysescalculations'nd theloadswhichwer'eusedinthedesignofpipesupportdetaildrawingswhichweiefabricated and.released forinstallation duringtheconstruction oftheplant.Thereleasedpipesupportdetaildrawingsdidnothavefactoredintothemrevisedpiping-systeIIL stressvalueswhichhadbeendeveloped, subsequent totheinitialpipingsystemstresscalculations.

hAllofthesafetyimplications arenotknownatthistimeyhowever,ourbestestimateisthattherewillbeapproximately 1000pipesupportswhichmayrequiredesignchanges.Hadthedeficiencies goneundetected, itis.anticipated thatsomesupportscouldhavebeenoverstressed beyondallowable designlimitsbyanorderof100percentorgreater.Thecondition wasfirstdetectedbyBechtelengineering personnel duringpreparations forpipingsystemsstresswalkdowns inthefirstquarterof1979.Atthattimerareviewperformed onthebasisofarandomsampleindicated thattheproblemwasnotgenericorwidespread.

Theproblemappearedtohavebeenconfinedtocalculations whichhadbeenperformed priortomid-1976andsubse-,quentlyrevised.>'~,oPENNS'YLYANIA POWER8LIGHTCOMPANYf90 Mr.BoyceH.GrierSeptember 5,1979Subsequently, inpreparation forturnoverofthefeedwater systemtostartup,arelatively largenumberofpipesupportdetails,.approximately 40outof276,whichwerefoundtobediscrepant.

Therefore, inordertofacilitate asorderlyandcompleteaspossibleturnoverofsystemsforstartup,athoroughverification programhasbeeninstituted.

Theverification program,whichinstituted following discovery ofthe.condition, willcoverallforce,'omentcalculations andtheirrelatedpipesupportdetails.On,July25,1979,BechtelQAidentified thecondition initsMCAR-1-36 requesting thatBechtelengineering evaluatethecondition forreportability.

BaseduponBechtelengineering's conclusion thatthecondition isreportable, afinalreporttoMCAR-1-36 willbesubmitted toPPaLbyDecember28,1979.Following, PPGLwillsubmititsfinalreportofsaiddeficiency tothe~Commission byMarch1,1980.Verytrulyyours,N.W.CurtisVicePresident-Engineering 6Construction ARS:mcb.cc:.Mr.RobertM.GalloU.S.NuclearRegulatory Commission

~P.0Box52Shickshinny, Pennsylvania 18655Mr.VictorStello(15)Director&ffice ofInspection IEnforcement U.S.NuclearRegulatory Commission-Washington, D.C.20555Mr.G.,McDonaldOfficeofManagement Information aProgramControlU.S.NuclearRegulatory Commission Washington, D.C.20555

~IIEI

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