ML17326B555
| ML17326B555 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 03/14/1989 |
| From: | ALEXICH M P INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | MURLEY T E NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML17326B556 | List: |
| References | |
| AEP:NRC:1030, NUDOCS 8903220188 | |
| Download: ML17326B555 (15) | |
Text
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SUBJECT:
ApplicationforamendstoLicensesPDR-586DPR-74,modifyingTechSpec3.3.2.1Tables3.3-3,3.3-4,3.3-564.3-2.DISTRIBUTIONCODE:A001DCOPIESRECEIVED:LTRENCLSIZE:TITLE:ORSubmittal:GeneralDistributionNOTES:COPIESLTTRENCL1011COPIESLTTRENCL22RECIPIENTIDCODE/NAMEPD3-1PDRECIPIENTIDCODE/NAMEPD3-1LASTANG,JINTERNAL:ARM/DAF/LFMBNRR/DEST/CEB8HNRR/DEST/MTB9HNRR/DEST/SICBNUDOCS-ABSRACTNRR/DEST/ADS7ENRR/DEST/ESB8DNRR/DEST/RSB8ENRR/DOEA/TSB11OGC/HDS1RES/DSIR/EIB1111111110111011'1111111ACCESSIONNBR:8903220188DOC.DATE:89/03/14NOTARIZED:NO.DOCKETFACIL:50-315DonaldC.CookNuclearPowerPlant,Unit1,Indiana60500031550-316DonaldC.CookNuclearPowerPlant,Unit2,Indiana&05000316AUTH.NAMEAUTHORAFFILIATIONALEXICH,M.P.IndianaMichiganPowerCo.(formerlyIndiana6MichiganEleRECIP.NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk)EXTERNAL:LPDRNSIC1111NRCPDR11RIhNOTE'IOALL"RIDS"RECIPIENIS'IZASEHELPUSIOREZUCEWASTE.'XNI'ACI'IHEDOCUMENI'MURt3LDESKSROOMPl-37(EXT.20079)KOEIZMZNATEYMRKkKFMHDISTRIBUTIONLTSTSFORDOCUMEÃISYOUDOlN'TNEED)TOTALNUMBEROFCOPIESREQUIRED:LTTR19ENCL16 0ji'pP\
indianaMichiganPowerCompanyP.O.Box16631Columbus,OH43216AEP:NRC:103010CFR50.90DonaldC.CookNuclearPlantUnits1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74TECHNICALSPECIFICATIONCHANGE:SAFETYINJECTIONANDCONTAINMENTSPRAYMANUALACTUATIONSIGNALSU.S.NuclearRegulatoryCommissionAttn:DocumentControlDeskWashington,D.C.20555Attn:T.E.MurleyMarch14,1989
DearDr.Murley:
ThisletteranditsattachmentsconstituteanapplicationforamendmenttotheTechnicalSpecifications(T/Ss)fortheDonaldC.CookNuclearPlantUnits1and2.Specifically,weareproposingtomodifyT/S3.3.2.1(EngineeredSafetyFeatureActuationSystemInstrumentation)Tables3.3-3,3.3-4,3.3-5and4.3-2sothattheymoreaccuratelyreflectthedesignoftheESFmanualactuationfunctions,andreferencemoreappropriatesurveillanceandactionrequirementsformanualactuationswithrespecttotheWestinghouseStandardT/Ss.Attachment1tothislettercontainsthereasonsforthechangesandouranalysesconcerningsignificanthazardsconsideration.Attachment2containstheproposedrevisedT/Spages.Webelievethattheproposedchangeswillnotresultin(1)asignificantchangeinthetypesofeffluentsorasignificantincreaseintheamountsofanyeffluentthatmaybereleasedoffsite,or(2)asignificantincreaseinindividualorcumulativeoccupationalradiationexposure.TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommitteeandwillbereviewedbytheNuclearSafetyandDesignReviewCommitteeattheirnextregularlyscheduledmeeting.Incompliancewiththerequirementsof10CFR50.91(b)(1),copiesofthisletteranditsattachmentshavebeentransmittedtoMr.R.C.CallenoftheMichiganPublicServiceConnnissionandMr.GeorgeBruchmannoftheMichiganDepartmentofPublicHealth.Sg'0$220iSSS50003i'DRADOCK05QPDCPgooi Dr.T.E.Murley-2-AEP:NRC:1030ThisdocumenthasbeenpreparedfollowingCorporateproceduresthatincorporateareasonablesetofcontrolstoensureitsaccuracyandcompletenesspriortosignaturebytheundersigned.Sincerely,M.P.AlechVicePresidentldpAttachmentscc:D.H.Williams,Jr.W.'.Smith,Jr.-BridgmanR.C.CallenG.BruchmannG.CharnoffNRCResidentInspector-BridgmanA.B.Davis-RegionIII II ATTACHMENT1TOAEP:NRC:1030REASONSAND10CFR50.92ANALYSESFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICALSPECIFICATIONS Attachment1toAEP:NRC:1030Page1ThepurposeofthissubmittalistoclarifyandcorrectTechnicalSpecification(T/S)3/4.3.2.1(EngineeredSafetyFeaturesActuationSystemInstrumentation).Specifically,weareproposingtomodifyTables3.3-3,3.3-4,and4.3-2tomoreaccuratelyreflectthedesignoftheESFmanualactuationchannelsasdelineatedinT/STable3.3-5andtomorecloselyresemblethesurveillancerequirementsoftheStandardT/Ss(STS).WearealsoproposingamodificationtoT/STable3.3-5sothatitmoreaccuratelyreflectsthedesignoftheESFmanualactuationchannels.Thespecificproblemsandassociatedchangesaredescribedbelow.ChaneNo.1Editorial:MisleadinDescritionofFunctionsT/STables3.3-3,3.3-4,and4.3-2describethefollowingspecificmanualactuationchannels:FunctionalUnitl.aManualSafetyinjection(andassociatedactuations)2.aManual3.a.lManual3.b.lManual3.c.lManualContainmentsprayContainmentPhase"A"isolationContainmentPhase"B"isolationContainmentPurgeandexhaustisolation4.aManualSteamlineisolationThewayinwhichthesesixfunctionalunitsnotedabovearelistedinT/STables3.3-3,3.3-4,and4.3-2impliesthatthereareseparatemanualswitchesforeach.However,duetoonemanualswitchactuatingmorethanonefunctionincertaincases,thereareeffectivelyonlyfourfunctionalunits.Thesefourarediscernibleby"!:i"ayinwhichtheyarecurrentlylistedinT/STable3.3-5,whichdescribesthemasfollows:InitiatinSinal.ndFunction1.ManualDescritionSafetyinjection(ECCS)FeedwaterisolationReactortrip'(SI)
Attachment1toAEP:NRC:1030Page2Ini,tiatinSinalandFunctionContainmentisolation-Phase"A"ContainmentpurgeandexhaustisolationAuxiliaryfeedwaterpumpsEssentialservicewatersystemContainmentairrecirculationfanContainmentsprayContainmentisolation-Phase"B"ContainmentpurgeandexhaustisolationContainmentisolation-Phase"A"ContainmentpurgeandexhaustisolationSteamlineisolationInordertomakethefunctiondescriptionsconsistentbetweenT/Stables,wehavecreatedaFunctionalUnit9inTables3.3-3,3.3-4,and4.3-2,whichliststhemanualactuationfunctionsconsistentwithTable3.3-5.(Note,however,thatthemanualstartofthecontainmentairrecirculationfanswillbeplacedwithgroupb[containmentsprayandrelatedfunctions]ratherthangroupa.ThisisconsistentwithaproposedchangetoT/STable3.3-5describedunder"ChangeNo.5").Theinformationforthepresentfunctionalunits(l.a,2.a,3.a.l,3.b.l,3.c.land4.a)inTables3.3-3,3.3-4,and4.3-2hasbeenreplacedwiththewords"SeeFunctionalUnit9."Thischangeisadministrativeinnature,intendedonlytomaketheT/Sdescriptionofthemanualfunctionsmoreaccurate.Presently,T/STable3.3-3Function3(PurgeandExhaustIsolationFunctions)hasafootnotewhichstatesthattherequirementsareonlyapplicableduringpurge.Thefootnoteisappliedto'llthreepartsofthefunction,i.e.,manual,containmentradioactivity-hi~,hTrainAandcontainmentradioactivity-highTrainB.AsdeiiniicedinTable3.3-5,themanualcircuitrypiovidingpurgean<!exhaustisolationalsoprovidesotherfunctions,suchassafetyinjection,whicharestillapplicableattimesotherthanduringpurge.Therefore,wehaverelocatedthefootnotedesignatorsuchthatitonlyappliestothehighcontainmentradioac".'.vityfunctions.
1 Attachment1toAEP:NRC:1030Page3ChaneNo.2Editorial:MisleadinDescritionofEuimentinTable3.3-3ThereareinconsistenciesintheT/STable3.3-3descriptionsofthenumberofchannelswhichexistandthenumberofchannelsrequiredtotripforthemanualinitiationsdescribedabove.Thesearedescribedbelow.a.FunctionalUnitl.aSafetInectionManualActuationT/STable3.3-3FunctionalUnitl.aindicatesthatthereareatotaloftwosafetyinjection(SI)andrelatedfunctionmanualactuationchannels,withoneofthetwochannelsrequiredforanSIactuation.Thisfunctionalunit,whichcorrespondsintheactualplantdesigntoFunctionalUnitl.aofT/STable3.3-5,doesnotmakeitclearthattheaboveistrueforeachtrainofthe'unction.Thereactuallyarefourswitchesforthisfunction,tworedundantswitchespertrain.ClosingeitheroneofthetwoSImanualswitchespertrainwillinitiatethattrainofSI.Toavoidconfusion,weareproposingtodescribetheseinourproposedFunctionalUnit9.aforT/STable3.3-3asfollows:TotalNo.ofChannelsChannelsToTriMinimumChannels0erable2/train1/train2/trainb.FunctionalUnit2.aContainmentSraManual3.a.lContainmentIsolationPhaseAManual3.b.lContainmentIsolationPhaseBManualand3.c.lContainmentIsolationPureandExhaustManualTheabovefourfunctionalunits*correspondintheactualplantdesigntofunctionsl.b(ContainmentSpray,ContainmentIsolation,PhaseB;andPurgeandExhaustIsolation)andl.c(ContainmentIsolation,PhaseA,andPurge.>>~dExhaustIsolation).ofT/STable3.3-5.Eachofthea~twofunctiongroupshasoneswitchpertrain.Closin~,:heswitchinitiatesonlythattrain'sfunctions.However,T/STable3.3-3describesfunctionalunit2.a(containmentspray)and3.b.l(Phase"B"isol.ition)aseachhavingtwochannels,withbothchannels:equiredtotrip.Toavoidconfusion,weareproposin.;:odescribethemanualchannelsinourproposed:'nctionalunits9.band9.cforT/STable3.3-3<<<.l:'ows:*SeeChangeNo.5;,.-arelatedchange.
I~V Attachment1toAEP:NRC:1030Page4TotalNo.ofChannelsChannels~ToTriMinimumChannels0erable.1/train1/train1/trainc.FunctionalUnit4.aSteamLineIsolationManualThereisonemainsteamstopvalveineachofthefourmainsteamlinesattheCookNuclearPlant.Fastclosureofthemainsteamstopvalvesisaccomplishedbydumpvalves.Therearetwodumpvalvesforeachstopvalve(i.e.,8dumpvalves),andoneswitchperdumpvalve(i.e.,8switches).Actuationofeitheroneofthetwodumpvalvesperstopvalvewillresultinclosureofthestopvalve.Tobeconsistentwiththechangeswehaveproposedfortheothermanualactuationswitches,thefollowingdescriptionforthenewFunctionalUnit9.dofT/STable3.3-3isbeingproposed:TotalNo.ofChannelsChannelsT~oTriMinimumChannels0erable2/steamline(1pertrain)2/steamline(1pertrain)'/steamline(1pertrain)TheaboveItem2changestoourmanualactuationfunctionaldescriptionsinT/STable3.3-3areadministrativeinnature,intendedonlytomaketheT/SdescriptionmoreaccurateandtobeconsistentwithT/STable3.3-5.Norequirementswithregardtooperabilitywerelessened.ChaneNo.3Technical:InconsistencBetweenSurveillanceT/STable4.3-2requiresthatbothtrainsofmanualactuationcircuitry,withtheexceptionoftheswitches,betestedmonthly.Theswitches,perNote1ofTable4.3-2,arerequiredtobetestedevery18months.'Piththeexceptionofsteamlineisolation,themanualswitchesinputdirectlyintotheirassociatedtrainssolidstateprotections"stem(SSPS).Themonthlytestingthatisperformedforthemanualactuationcircuitry(exceptsteamlineisolation)iscompletelyencompassedbytheautomaticactuationlogictestingoftheSSPS,whichperT/STable4.3-2istobeperformedevery31daysonastaggeredtrainbasis,essentiallybimonthly.Thedifferenttestingfrequenciesforthesameequipmentappears;obeaninconsistencyinourT/Ss,whichisnotfoundinRevision~ofcheSTS.Rev.4oftheSTSdoesnot Attachment1toAEP:NRC:1030Page5requiremonthlychannelfunctionaltestingofthemanualcircuitry.Rather,itrequiresthata"TripActuatingDeviceOperationalTest"beperformedevery18months.ThisisdefinedbytheSTSasfollows:ATRIPACTUATINGDEVICEOPERATIONALTESTshallconsistofoperatingtheTripActuatingDeviceandverifyingOPERABILITYofalarm,interlock,and/ortripfunctions.TheTRIPACTUATINGDEVICEOPERATIONALTESTshallincludeadjustment,asnecessary,oftheTripActuatingDevicesuchthatitactuatesattherequiredsetpointwithintherequiredaccuracy.TheinconsistencyinourT/Srequiredtestingfrequencyfortheportionofthecircuitrynotinvolvingthemanualswitchesisbelievedtobeanerror,whichwascorrectedinlaterversionsoftheSTSbyadoptingthe"TripActuatingDeviceOperationalTest"describedabove.TocorrecttheinconsistencyinourT/Ss,weareproposingtoadopttheSTSrequirementforthemanualswitches,andtoapplythemonthlytestingofthebalanceofthecircuitryonlytosteamlineisolation.Theterm"TripActuatingDeviceOperationalTest"isproposedfortheDefinitionSection(1)oftheT/SsandtoT/S4.3.2.1.1.MonthlytestingoftheautomaticactuationlogichasshowntheSSPSattheCookNuclearPlanttobeextremelyreliable.Therefore,webelievethatthefrequencyfortestingthemanual'ircuitry(exceptforsteamlineisolation)canbemadeconsistentwiththeotherSSPStestrequirementswithoutendangeringpublichealthandsafety.ChaneNo.4Technical:ActionReuirementsforManualSteamLineIsolationThischangeproposesamodificationtofunctionalunit4.a(SteamLineIsolation-Manual)ofT/STable3.3-3,forthepurposeofachievinggreaterconsistencywiththeSTS.Ascurrentlywritten,theactionstatementforfunctionalunit4.a(Action18)requirestheunittobeplacedinMode3within54hoursifthenumberofoperablechannelsisonelessthanthetotal.ThisdifiersfromtheSTSrequirement,whichrequiresthatthesteamlinestop'alveassociatedwiththeinoperablemanualchannelbedeclaredinoperableifthecauseofthechannelinoperabilityisnotcorrectedwithin48hours.Theactionrequirement-ofT/S3.7.1.5(SteamGeneratorStopValves)isthenfollowed.Forop~."a'oninMode1,operationwithoneinoperablebutopenstopval;~e~nproceedforfourhours.Ifthecauseof Attachment1toAEP:NRC:1030Page6theinoperabilityisnotcorrected,powermustbereducedbelowfivepercentofratedthermalpowerwithinthenexttwohours.ForModes2and3,operationmay'continueprovidedthestopvalveismaintainedclosed.MeareproposingtochangetheactionrequirementsforT/STable3.3-3functionalunit4.atobeconsistentwiththeSTS.Theactionrequirementischangedfromthecurrentaction18toanewaction20,whichisconsistentwiththeSTSrequirement.TheproposedchangeprovidesinternalconsistencywithintheT/Ssbymakingtheactionrequirementsforthesteamlinemanualactuationcircuitryconsistentwiththosefortheassociatedstopvalves.ThechangealsoprovidesconsistencywiththeSTS.ChaneNo.5EditorialThischangeproposestocorrectanerrorinT/STable3.3-5regardingfunctionsl.aandl.b.,Aspreviouslywritten,themanualstartofthecontainmentairrecirculationfansisgroupedwiththesafetyinjectionandrelatedfunctions.Thestartofthefansactuallyisassociatedwiththeswitchesoffunctionalgroupl.b(containmentsprayandrelatedfunctions).Therefore,weareproposingtomovethefunctionfromfunctionl.atofunctionl.b.Thischangeisalsoreflectedinourproposedfunctionalunit9forT/STables3.3-3,3.3-4and4.3-2,whichwasdescribedinChangeNo.1above.10CFR50.92EvaluationPer10CFR50.92,aproposedamendmentwillnotinvolveasignificanthazardsconsiderationiftheproposedamendmentdoesnot:(1)involveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated,(2)createthepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyanalyzedorevaluated,or(3)involve.isignificantreductioninamarginofsafety.Criterion1ChangeNos.1,2a:".d5areadministrativeinnature.TheyinvolverewritingtheT/Ss:"yardingESFmanualactuationssothatthefunctionsaremorci:curatelyportrayedinthedocument,orso Attachment1toAEP:NRC:1030Page7thatthedocumentisinternallyconsistent.ChangeNo.3,involvingtheESFmanualcircuitrytestingwillreducethefrequencyoftheportioninvolvingtheSSPSfromonceeverymonthtoonceeveryothermonth.ThischangecorrectsaninconsistencyinourT/SsbetweentherequirementsforthemanualcircuitryandtheSSPSrequirementswhichwasrecognizedandcorrectedinlaterversionsoftheSTS.OurreviewofthesurveillancetesthistoryofthemonthlySSPStestshasshownthatthesystemishighlyreliable,andgivesusconfidencethatthechangeintestfrequencywillnotendangerpublichealthandsafety.ChangeNo.4,tothemanualsteamlineisolationcircuitry,providesinternalconsistencyinourT/Ssbymakingtheactionrequirementsforthemanualactuationcircuitryconsistentwiththeassociatedstopvalves.ThechangeisconsistentwiththeSTS.Forthesereasons,itisourbeliefthattheproposedchangesdonotinvolveasignificantincreaseintheprobabilityorconsequencesofapreviouslyevaluatedaccident,nordotheyinvolveasignificantreductioninamarginofsafety.Criterion2Thechangeswillnotintroduceanynewmodesofplantoperation,norwillanyphysicalchangestotheplantberequired.Thus,thechangesshouldnotcreatethepossibilityof'anewordifferentkindofaccidentfromanyaccidentpreviouslyanalyzedorevaluated.Criterion3SeeCriterion1,above.Lastly,wenotethattheCommissionhasprovidedguidanceconcerningthedeterminationofsignificanthazardsbyprovidingcertainexamples(48FR14870)ofamendmentsconsiderednotlikelytoinvolvesignificanthazardsconsideration.Thefirstoftheseexamplesreferstochangeswhichareadministrativeinnature:forexample,changestoachieveconsistencythroughouttheT/Ss,correctionoferrors,orchangesinnomenclature.ChangeNos.1,2and5areinthiscategoryinthattheyclarifytheT/Ssandmakethemmoreinternallyconsistent.Thesixthexamplereferstochangeswhichmay".esultinsomeincreasetotheprobabilityorconsequencesofapreviouslyanalyzedaccident,butwheretheresultsofthechangeareclearlywithinacceptablelimits.ThisexampleisrelevanttochangeNos.3and4sincethechangesareconsistentwiththeSTS.Basedonthediscussionabove,weconcludethattheexampiescitedarerelevantandthatthechangesshouldnotrequiresignificanthazardsconsideration.