ML17331A797

Forwards Response to 810210 Generic Ltr 81-14 Re Seismic Qualification of Auxiliary Feedwater Sys.Sys Is Designed, Constructed & Maintained to Withstand Safe Shutdown Earthquake

ML17331A797
Person / Time
Site:	Cook
Issue date:	08/28/1981
From:	HUNTER R S INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	DENTON H R Office of Nuclear Reactor Regulation
References
AEP:NRC:00486A, AEP:NRC:486A, GL-81-14, NUDOCS 8109110262
Download: ML17331A797 (6)

Text

REGULATORYlvFORMATIONOISTRIOJTIONSYTEI(RIOS)ACCESSIOVVoR:8109FACI':50315Oona50-316'3onaAUTH.NAWEHUNTERsR~STRECIP~VAIEOEVTOVe9~Ro110262OOC~DATE;91/08/28VQTAPIZED:YFSld.Coo<NuclearPowerP>antqUnitipIndianala".CooNNuclearPowerPlant~Unit2iIndianaAUT93%A}.F1LIATIONIndianaRMacniaanElectricCo.RE:IoIE>>'IIAFFILIATIOVOfficeofnuclearReactorRegulationiDirector'30"KET0550031SUBJ=CT:Forwardsrespoqualificationconstructed8earthquake,9ISTRI8JlI'JNC3OE:A001TITL=:general9istribunseto810210GenericLtr8114reseismicofauxiliaryfeedwatersys.Sysisdesianeor~aintaineotowitnstandsafeshutdownSCOPtESRECEIVEDlLTRENCI.SI2E:l),5tionforafterissuanceofOoeratingI.icenseVOTES:ICE:3cooiesal1IKE13cooiesall~aterial.materials0500031505000316~ECroiE~rI)CO)E/NA:~=ACTION:3R&COPIESL.Tl'REVCL13RECIPIENTIOCODE/NAMECQPIEsLTTRENCLINTERNAL:0/3IRiHU~f3=QRA'S"SsFIEXTFRNAL':AC~SVR"PD9~riSFAGOT06BR10010$n2112101116:.,111')IRp0IVOFLICOELO11RAOAS@ITBRLPDR:'03VStC05111011SKP15Ba~TOTALVU"-BEROFCOPIESREJUlRED:LTTRENCL INDIANALMICHIGANELECTRICCOMPANYP~O.BOX18BOWLINGGREENSTATIONNEWYORK,H.Y.10004August28,1981AEP:NRC:00486ADONALDC.COOKNUCLEARPLAiVTUNITNOS.1AND2DOCKETiVOS.50-315and50-316LICENSENOS.DPR-58andDPR-74SEIS<ifICQUALIFICATIONOFAUXILIARYFEEDWATERSYSTEMS:GenericLetter81-14Hr,HaroldR.Denton,DirectorOfficeofViuclearReactorRegulationU.S.NuclearRegulatoryCommissionWashington,D.C.20555'.>l"W%/aNtwvu<i<wcQN.~cc45ANMC'h

DearNr.Denton:

Thisletteranditsattachmentprovideourresponseto~ifr.D.G.Eisenhut'sGenericLetterVio.81-14datedFebruary10,1981whichweoffic'allyreceived.onJune18,1981.,-TheCookPlantAuxiliaryFeedwaterSystems(AFS),withtheexceptionoftheCondensateStorageTanks(CSTs)anditsassociatedpiping,aredesigned;constructed,andmaintainedtowithstandaSafe.ShutdownEarthquake(SSE)asdeterminedutilizingtheanalytical,testingandevaluationmethods,andtheacceptancecriteriaconsist-entwithothersafety-gradesystemsoftheplant.ThecomponentsandequipmentlistedintheAttachmenttothisletterhavebeenseismicallyqualifiedeitherbytestingoranalysis.Whenqualifiedbyanalysistheseismicinputiseitheraspecifiedacceleration,oraresponsespectrumthatboundsthemostsevereresponsespectrumfortheplant,ortheDesignBasisEarthquake(DBE)responsespectrumforthefloorelevati.onwheretherespectivecomponentorequipmentisinstalled.Forthosecomponentsqualifiedbyanalysis,theloadcombinationsincludethestressesduetotheDBE,deadweightand,forpressureretainingparts,theoperatingpressure.Theseresultingstresseswerethencomparedtotheallowablestressesfromtheappropriatecodes.Forequipmentquali-fiedbytesting,acceptanceisdeterminedbytheoperabilityoftheequipmentsubsequenttothetest.Certainsafetyrelatedswitchgearcabinetsandmotorcontrolcenterswerefoundtohaveinsufficientanchoragetopreventover-turningduringtheDBE.AsdetailedinAmericanElectricPowerServiceCorporation'sAugust14,1981andAugust17,1981letterstoyou,temporarybracingwasinstalled.Thepermanentmodificationof81091102b2810828PDRADOCK05000315PPDR theanchoragehasnowbeencompleted.AsindicatedinourAugust17,1981letter,someoftheequipmentanchoragewhichwasmodifiedisbeyondthescopeofGenericLetter81-14.SeismicrelatedIEBulletins79-02,79-04,79-07,79-14,and80-11,andIEInformationNotice80-21havebeenreviewedforapplic-abilitytotheAFS.AllareapplicabletotheCookPlantAFSexceptforIEBulletin79-04.AllworkapplicabletotheAFSforIEBulletins79-02and79-07iscomplete;workapplicabletotheAFSforIEBulletin79-14and80-11ispresentlybeingcompleted;IE'nformationNotice80-21iscurrentlyunderreview.ConcerningtheCST's,theyareseismicclassII,andaredesignedtowithstandtheOperatingBasisEarthquake(OBE).IntheunlikelyeventofaDBEwhichmayresultindamagetotheCST's,proceduresexistandareinplaceattheCookPla'nttos~itchAFSpumpsuctiontotheessentialservicewater(ESW)system,whichisSeismicClassI.Thisprocedurewasdescribedindetailinour'lettertoyoudatedMarch28,1980,No.AEP:NRC:0307A.TheSafetyEvaluationReportattachedtoMR,S.Varga'sletterofOctober6,1980acceptedthatprocedureforswitchingtotheESWSystem.Therefore,itisnotnecessarytowalkdowntheCST's.Nevertheless,thenon-seismicallyqualifiedpipingconnectedtotheCST'shasbeenwalked-downandnodeficiencieswereidentified.Verytrulyyours,R.S.HunterVicePresidentcc:JohnE.Dolan-ColumbusR.C.CallenG.CharnoffR.W.JurgensenD.V.Shaller-BridgmanJoeWilliams,Jr.NRCRegionIIIResidentInspector-Bridgman STATEOFNEWYORK))COUNTYOFNEWYORK-)R.S.Hunterbeingdulysworn,deposesandsaysthatheistheVicePresidentofLicenseeIndiana6MichiganElectricCompany,thathehasreadtheforegoingresponsetoGenericLetter81-14andknowsthecontentsthereof;andthatsaidcontentsaretruetothebestofhisknowledgeandbelief.Subscribedsndsworntobeforemethis~deyof1981.otaryPublicGoQQ'pl.Q'Jr7rIlholryPu'blc'reor2er(orktlo.31-'643431r!uaiifiediollevrYo'kCounty><CammissicaSpiresMarch30,19.~~

ATTACHMENTSEISMICALLYQUALIFIEDAUXILIARYFEEDWATERSYSTEMCOMPONENTSCOMPONENTMETHODOFQUALIFICATION(A=ANALYSIS;T=TEST)MotorDrivenAuxiliaryFeedwaterPumpsTurbineDrivenAuxiliaryFeedwaterPumpsStrainersInstrumentationAAInstrumentTubingandSupportsValvesandValveSupportsPipingPipeHangersConduitsCableTroughsTerminalBlocksMotorControlCentersA/TAIAA/TDCValveControlCenters"N"TrainBatteryCharger"N"TrainBatteryandRacksSwitchgearSwitchesRelaysContactors COMPONENTMETHODOFQUALIFICATION(A=ANALYSIS'T=TEST)AuxiliaryFeedwaterPumpMotorsA4KVAirCircuitBreakersDCDistributionCabinet(TrainN)AuxiliaryFeedwaterPumpEnclosuresA