ML17244A867

Sixty-Day Response to IE Bulletin 79-14, 'Seismic Analysis for As-Built Safety-Related Piping Sys.'

ML17244A867
Person / Time
Site:	Ginna
Issue date:	08/31/1979
From:	ROCHESTER GAS & ELECTRIC CORP.
To:
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ML17244A865	List: ML17244A864 ML17244A867 ML17244A868
References
NUDOCS 7910030866
Download: ML17244A867 (20)

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60DayResponsetoIEBulletinNo.79-14SeismicAnalysisforAs-Built.SafetyRelatedPipingSystemsR.E.GinnaNuclearPowerPlant,UnitNo.1Docket,50-244Introductiona)b)c)d)e)Our30DayResponsetoIEBulletinNo.79-14submittedonJuly31,1979includesbackgroundinformationontheseismicqualificationmethodsusedatGinnaStation,andadescriptionofthe79-14inspectionandevaluationprogramscopeandschedule.TheinspectionandevaluationprogramforSeismicCategoryIpipingsystemsinsidecontainmenthasbeencompleted.Theresultsoftheseevaluationsaresum-marizedinthisreport.Thescheduleforpreparationandrevisionofthedrawingsdescribedinour30dayreporthasbeenrevised.Thedrawingsforpipingin-sidecontainmentwillnowbecompletedwithin120daysofthedateofthebulletin;andthedrawingsforpipingoutsidecontainmentwillbecompletedwithin180daysofthedateofthebulletin.Inspectionandevalua-tionofpipingsystemsoutsidecontainmentwillbecom-pletedwithin120daysofthedateofthebulletin.Alistingofdrawingsusedtoestablishdesignrequire-mentswasattachedtothe30DayResponse.Attachment,1tothisreportisarevisedlistingofthedrawings.Thelistidentifiespipingandinstrumentationdiagrams,pipinglayoutdrawings,andpipinganalysisdrawingsusedtoinspectandevaluateeachsystem.TheinspectionandevaluationofpipingsystemsinsidecontaifunentwasperformedpriortotheAugust15,1979issuanceofthesupplementtoIEBulletin79-14.Attach-ment2tothisreportdescribesthemethodsofinspec-tion,evaluation,andnonconformancecontrolusedforpipinginsidecontainment.Theresultsoftheinspectionsandevaluationsaresum-marizedintwoparts:first,theReactorCoolantSystemandpipingsystemswhichwereoriginallyqualifiedbyequivalentstaticanalysesandsecond,pipingsystems,orportionsofsystems,whichwerequalifiedbydynamicanalysis.Theresultsarealsopresentedinthesamesequenceofsystemsusedinthedrawingindex,Attachment1.v9>00800&4::

4e(

2.ReactorCoolantSstemandCateorIPiin2~~InchNominalPieSizeandLarerSea.smxcalluglifiedUsinEivalentState.cAnalses(a)TheresultspresentedherearebasedontheinspectionandevaluationmethodsdiscussedinAttachment2ofthisreport.Nonconformancesandtheirevaluationsanddispositionsareidentifiedforthosedeviationswhichwereoutsidetheestablishedacceptancecriteria.Alllineslistedbelowwereevaluatedandfoundacceptableintheasbuiltconditionorrepairsmade.(b)ReactorCoolantSystem1.PrimaryLoopNoNonconformances2.SurgePipingNoNonconformances3.PressurizertoPCV434.NoNonconformancesPressurizertoPCV4355.NoNonconformancesPressurizertoPCV430andPCV431CNoNonconformances6.PressurizerSprayLinesFromR.C.LoopsthroughPCV431McBNCR-G-79-119-1SupportPS-15isinstalledatelevation247'-9".Thedesignelevationis244'-9".Thesupportisintendedtoprotectthenozzleontheprimaryloop.Theinstalledlocationisclosertothenozzle,whichwillfurtherreduceloadsonthenozzle.Evaluation:Use-as-isNCR-G-79-119-2SupportPS-22isinstalledatelevation279'4".Thedesignelevationis280'-6".Thesupportisclosertothevalvesprovidingforadditionalrestraint.Evaluation:Use-as-is.

(c)MainSteamSystem1.FromSteamGeneratorlAtoPen.4401NoNonconformances2.FromSteamGenerator.1BtoPen;0402NoNonconformances(d)FeedwaterSystem1.FromPen.4403toSteamGenerator1ANoNonconformances2.FromPen.5404toSteamGenerator1BNoNonconformances(e)SafetyInjectionSystem1.FromAccumulator"A"toR.C.LoopBNoNonconformances2.Accumulator"B"toR.C.LoopANCR-G-79-119-3Valve865assumedtoweigh1100lbs.actuallyweighs2550lbs.Sincethevalveislocatedonlyteninchesfromananchor,thestressduetotheincreasedweightisnotsignificant:Themaximumseismicstressassumingthevalveweighs1100lbs.is3778psi.Evaluation:Use-as-is.3.Pen.5101toValves878CSDNCR-G-79-119-4SupportSI-84isrelocatedaroundanelbow,1'-6"fromthedesignlocation.Sincethisisaspringsupport,itwillhavenegligibleeffect.onseismicstresses.Thedeadloadstressis3944psiwiththesupportintheas-builtlocation,Evaluation:Use-as-is

NCR-G-79-119-5Angleswereaddedattwolocationswhichjointhe4"and6"containmentspraylinesprovidingaddi-tionalstiffnesstotheline.Evaluation:Use-as-is.NCR-G-79-119-6Thepipingwasreroutedatthepenetration.Anadditionalverticalrestraintwasadded.Thelineis,acceptableinas-builtcondition.Evaluation:Use-as-is.Pen.0113toValves878ASBNCR-G-79-119-7SupportSI-93islocated1'-0"southwestofdesign,.location.Also,SI-93isrotateddown30'.TheinstalledlocationandorientationareacceptablesincespacingisstillwithinB31.1allowablesandthesupportwillstillprovidethenecessarylateralrestraint.AnanglewasaddednearSI-93joining.this4"pipetoa2"pipe.Thissupportprovidesadditionalstiffnesstobothpipingsystems.Evaluation:Use-as-is.5.ContainmentSumptoPen.4141NoNonconformances6.ContainmentSumptoPen.5142No.Nonconformances(f)ResidualHeat;RemovalFromPenetration5140toReactorCoolantLoopANCR-G-79-119-8SupportRH-7is2'-7"southofdesignedlocation.Thisconditionwasincludedinthereanalysisperformedfortherevisedresponseto,IEBulletinNo.79-07,July26,1979.Evaluaton:Use-as-is.2.FromPenetration4111toReactorandReactorCoolantLoopB

NCR-G-79-90(SeeLER-79-015)SupportRH-16wasinstalled7'-6"fromdesignloca-tion.Anothersupportwasinstalledatthedesignlocation.Thelineisnowacceptableintheas-builtcondition.Evaluation:Repair.3.6"and4"linefrom10"RHRtoreactorsupportNCR-G>>79-119-9RH-28islocated3'-3"eastofdesignlocation.RH-28isaspring,thesupportsadjacenttoit,arerigid.Thereviseddeadloadstressis1316psi.SinceRH-28isaspring,therelocationwillhaveminimaleffectonseismicstresses.Therefore,thelineisacceptableintheas-builtcondition.Evaluation:Use-as-is.(g)ContainmentSpray1.FromPen.0109toOuterRingNCR-G-79-88(SeeLER79-015)Twoclampswerefoundmissingonthering.Thesewerereinstalledperthedesigndrawings.Evaluation:Repair.NCR-G-79-91(SeeLER79-015)~Oneringsupportismissing.Thelinewasreanalyzedandthenormalconditionstress(deadload+pressure)fortheexistingconditionis9189psi.Theupsetconditionstress(deadload+pressure+SSE)is20327psi.Sincetheseareallwithincodeallowablestressvalues,thesystemisacceptablewithoutthissupport.Evaluation:Use-as-is.NCR-G-79-119-10Use-as-is.h2.FromPen.5105toInnerRingSeveralsupportsarerelocatedontheringandriser.However,spacingbetweensupportsdoesnotexceedtherecommendedcodespacing.Thedeviationfromdesignlocationwillnotcausesignificantstressincreases:Evaluation:

NCR-G-79-97(SeeLER79-015)SupportCS-12isnotperthedesigndrawings.Supporthasbeenreconstructedinaccordancewiththedesigndrawing.Evaluation:Repair.NCR-G-79-119-11(h)Angleshavebeenaddedattwolocationsjoiningthe6"pipetothe4"safetyinjectionlineprovidingadditionalstiffnesstobothlines.Evaluation:Use-as-is.ChemicalandVolumeControlSystem3"HeaderFromR.C.PumpSealstoPen.0108NoNonconformances(i)ComponentCooling1.FromR.C.PumpBtoPen.4125NCR-G-79-119-12Twoangleshavebeenaddednearthepenetrationjoiningtwo2inchlinestothe4inchlinepro-vidingadditionalstiffnesstoalllines.Lineisacceptableinas-builtcondition.Evaluation:Use-as-is.2.FromR.C.PumpAtoPen.5126NoNonconformances3.FromPen.5127toR.C.PumpANoNonconformances4.FromPen.0128toR.C.PumpBNCR-G-'9-119-135.Additionaldeadloadhangeraddedtosystem.Thisupgradesthesystem.Lineisacceptableinas-builtcondition.Evaluation:Use-as-is.FromReactorSupportCoolerstoPen.0130NoNonconformances6.FromPen.I131toReactorSupportCoolersNoNonconformances

(j)ServiceWaterPiping1.Forthissystemvariousportionsofthesystemaresupportedoncommon,multi-pipepipesupports.Thelinesevaluatedandthenonconformancesarelistedseparately.1.1LinesEvaluated:FromPen.119toFromPen.308toFromPen.316toFromPen.311toFromPen.320toFromPen.315toFromPen.312toFrom-Pen.323toRecirculationRecirculationRecirculationRecirculationRecirculationRecirculationRecirculationRecirculationUnit1AUnit1AUnit1BUnit1BUnit,1CUnit1CUnit1DUnit1D1.2NonconformancesNCR-G-79-92(SeeLER79-015)SupportSW-20wasreportedasmissingsixUbolts.FurtherreviewdeterminedU-boltswereactuallyinstalled.Evaluation:NoActionRequired.NCR-G-79-89(SeeLER79-015)SupportSW-23wasmissingaclamp.Theclampwasinstalled.Evaluation:Repair.NCR-G-79-93(SeeLER79-015)pipesupportSW-3,arodsupport,wasmissing.Thesupportwasinstalled.Evaluation:Repair.NCR-G-79-95(SeeLER79-015)PipesupportSW-29wasmissingaclamp.Theclampwasinstalled.Evaluation:RepairNCR-G-79-96(SeeLER79-015)PipesupportSW-22wasmissingfourU-bolts.TheU-boltswereinstalled.Evaluation:Repair.

NCR-G-79-119-14AdditionalsmalllineswerefoundsupportedfrompipesupportsSW-18,SW-19,SW-20,SW-21,SW-22,SW-23,andSW-26.Thesesupportsarealldesignedasmulti-pipepipesupports.Theadditional'loadsimposedbythesmalllineswillnotbesignificant.Evaluation:Use-as-is.NCR-G-79-119-15ThedesigndrawingforsupportSW-9showsatransversestrut.Thestrutwasinstalledata30'kew.Thestrutstillprovidestransverserestraintandalsosomeacceptableaxialrestraint.Evaluation:Use-as-is.NCR-G-79-119-16Anextrarodhangerwasoriginallyinstalledonthe'8,inchlinef'romrecirculationunit1DtoPen.323-The/extrasupportisacceptable.Evaluation:Use-as-is.NCR-G-79-119-17An8inchservicewaterpipewashungfromthe8inchlinetorecirculationunit1CfromPen.315.Theadditionalloadisappliedneararodhangeronthelineandshouldnotaffectthesystem.Evaluation:Use-as-is.2.LinestoreactorcompartmentcoolersThe21/2inchlinesservicingthereactorcompart-mentcoolersandtheconnectinglinesforthereactorcompartmentcoolersandcontinuousrecirculationunitswerefieldhunginaccordancewithB31.1.Therefore,nodesigndrawingsexist.Theselinesaresupportedinaccordancewiththeoriginalcriteria.(k)SteamGeneratorBlowdownPipinginsidecontainmentis2inchnominalpipesizeand,therefore,wasnotincludedinourprogram.(l)AuxiliaryFeedwaterNopipinginsidecontainment(m)BoricAcidNopipinginsidecontainment

3.0PiinSstems,orPortionsofSstems,SeismicalluglifiedBDamicAnalses(a)Theresultspresentedherearebasedontheinspectionandevaluationmethodsdiscussedinattachment2ofthisreport.Nonconformancesandtheirevaluationsanddispositionsareidentifiedforthosedeviationswhichwereoutsidetheestablishedacceptancecriteria.Alllineslistedbelowwereevaluatedandfoundacceptableintheasbuiltcondition.(b)Stand-byAuxiliaryFeedwaterStandbyAuxiliaryFeedwaterSystem1.FromPen.I119toMainFeedwaterLineANCR-G-79-119-18SupportAFW-,27is1'-10"higherontheriserthandesigned.The-newlocationisbettersinceitwillprovideadditionalsupporttothehorizontalrun.Evaluation:Use-as-isNCR-G-79-119-19Theweightofinsulationfromvalve9706Atothemainfeedwaterlinewasomittedfromtheanalysis.Themaximumseismicstressis12029psi.Theincreaseinstressdueto1.9lb/ftinsulationweightisnotsignificant.Evaluation:Use-as-is2.FromPen.4123toMainFeedwaterLineBNCR-G-79-119-20Theweightofinsulationfromvalve9706Btothemainfeedwaterlinewasomittedfromtheanalysis.Themaximumdeadloadstressis1253*psiandthemaximumSSEstressis7644psi.Theincreaseinstressdueto1.9lb/ftinsulationweight,'snotsignificant..Evaluation:Use-as-is(c)ChemicalandVolumeControlSystem1.Pen.4112toRegenerativeHeatExchangerNCR-G-79-119-21Dynamicanalysisperformedassumingsupportoftheoperatorsforvalves200A,200Band202.Thesesup-portsdonotexist.However,sincethecenterof

gravitylocationforthesevalvesissixinchesabovepipecenterlineandtheanalysisassumedthecenterofgravitytobe24inchesabovethepipecenterline,nosupportsfortheoperatorsarerequired.Evaluation:Use-as-is.(d)ServiceWaterPipinginsidecontainmentwasnot,dynamicallyanalyzed.(e)SteamGeneratorBlowdownPipinginsidecontainmentwasnotdynamicallyanalyzed.(f)AuxiliaryFeedwaterNopipinginsidecontainment.I(g)BoricAcidNopipinginsidecontainment.(h)RCSOverpressureProtectionSystemChangestotheinstallationdrawings,anddis-crepanciesbetweentheinstallationdrawingsandtheanalysis,wereevaluatedandfoundacceptableduringinstallation.(i)DemineralizedWater-PenetrationPiping1.Changestotheinstallationdrawings,anddis-crepanciesbetweentheinstallationdrawingsandtheanalysis,wereevaluatedandfoundacceptableduringinstallation.'I(j)CharcoalFilterDrawing-TestConnectionsChangestotheinstallationdrawings,anddis-crepanciesbetweentheinstallationdrawingsandtheanalysis,wereevaluatedandfoundacceptableduringinstallation.10-