ML17332A714
| ML17332A714 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 03/31/1995 |
| From: | FITZPATRICK E INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML17332A715 | List: |
| References | |
| AEP:NRC:1211, NUDOCS 9504060176 | |
| Download: ML17332A714 (20) | |
Text
(ACCELERATEDRIDSPROCESSING)REGULATORYINFORMATIONDISTRIBUTIONSYSTEM(RIDS)ACCESSIONNBR:9504060176DOC.DATE:95/03/31NOTARIZED:YESDOCKETFACIL:50-315DonaldC.CookNuclearPowerPlant,Unit1,IndianaM0500031550-316DonaldC.CookNuclearPowerPlant,Unit2,IndianaM05000316AUTH.NAMEAUTHORAFFILIATIONFITZPATRICK,E.IndianaMichiganPowerCo.(formerlyIndiana&MichiganEleRECIP.NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk)
SUBJECT:
ApplicationforamendstolicensesDPR-58&DPR-74.Amends.wouldmodifysurveillancerequirements,eliminatingrequirementtotestcertainsafeguardspumps.DISTRIBUTIONCODE:AOOIDCOPIESRECEIVED:LTRLENCLLSIZE:0+~TITLE:ORSubmittal:GeneralDistributionNOTES:RECIPIENTIDCODE/NAMEPD3-1LAHICKMAN,JINTERNAL:cgXXECENTER01NRR/DRCH/HTCBNRR/DSSA/SRXBOGC/HDS2EXTERNAL:NOACCOPIESLTTRENCL11111111111011RECIPIENTIDCODE/NAMEPD3-1PDNMSS/DWM/LLDPNRR/DSSA/SPLBNUDOCS-ABSTRACTNRCPDRCOPIESLTTRENCL1122111111NOTETOALL"RlDS"RECIPIENTS:PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.504-2083)TOELIMINATEYOURNAMEFROMDISTRIBUTIONLISTSFORDOCUMENTSYOUDON'TNEED!TOTALNUMBEROFCOPIESREQUIRED:LTTR13ENCL12 C~
indianaMichiganPowerCompanyP.O.Box16631Columbus,OH43216FINarch31,1995AEP:NRC:1211DocketNos.:50-31550-316U,S.NuclearRegulatoryCommissionATTN:DocumentControlDeskWashington,D.C.20555Gentlemen:DonaldC.CookNuclearPlantUnits1and2PROPOSEDAMENDMENTTOTECHNICALSPECIFICATIONSURVEILLANCEREQUIREMENTS'EVISESAFETYRELATEDPUMPTESTINGTOELIMINATERECIRCULATIONALIGNMENTSANDBECONSISTENTWITHTHEINSERVICETESTINGPROGRAM(IST)ANDNUREG-1431.Thisletteranditsattachmentsconstituteanapplicationforamendmenttothetechnicalspecifications(T/Ss)forDonaldC.CookNuclearPlantunits1,and2~Specifically,weareproposingtomodifythesurveillancerequirementstoeliminatetherequirementtotestcertainsafeguardspumpsviatheirrecirculationflowpath.Thefollowingpumpsareaffected;thecentrifugalchargingpumps,residualheatremovalpumps,motordrivenauxiliaryfeedwaterpumps,andtheturbinedrivenauxiliaryfeedwaterpumps.Twopumps,thecontainmentspraypumpandsafetyinjectionpump,willcontinuetobetestedontheirrecirculationlinesbasedonexistingdesign.Thisproposedchangewouldalsoeliminatereferencestospecificdischargepressuresandflowsassociatedwiththesepumps.ThespecifictestparametersbeingremovedarecontrolledbytheapprovedCookNuclearPlantISTprogram.Thefollowingunit1andunit2T/Ssurveillancesareaffected:4.1.2.3.1,4.1.2.4,4.5.2f,4.6.2.1b,4.7.1.2a,and4.7.1.2b.TheexistingDonaldC.CookNuclearPlantT/Ssurveillancerequirementsassociatedwiththeabovepumpsrequiretestingofthepumpsutilizingtheirrecirculationlines.Thismethodoftestingprovideslimitedinformationonthepump/systems'bilitytoperformtheirsafetyrelatedfunctions.Therefore,achangetotheT/Ssurveillanceisbeingproposedtoallowtestingofthesepumpsusinghighercapacityflowpaths(whereapplicable).{'GG038PDR+0~7++>03ZZ950g0~~<<l<osoooz>q1IPgR
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U.S.NuclearRegulatoryCommissionPage2AEP:NRC:1211Utilizingthistestmethodwouldprovideformoreaccuratedatatobetterdeterminetheactualpump/systemconditions.Inadditiontotheimprovementinthequalityofacquiredtestdata,theproposedamendmentwouldalsoaligntheaffectedCookNuclearPlantT/SswiththeMeritsProgramT/SsissuedasNUREG-1431.AnadministrativechangetoT/Ssurveillances4.5.2.d.2,4.5.2.e,4.6.2.c,4.7.1.2e,and4.7.1.2fisalsoincludedinthisamendment.Thesespecificationseachcontainedafootnoteassociatedwiththeunit2cycle9-10refuelingoutagewhichisnolongerapplicable,thusthefootnotesarebeingremoved.Attachment1providesadetaileddescriptionoftheproposedchanges,thejustificationforthechanges,andourdeterminationofnosignificanthazardsconsiderationperformedpursuantto10CFR50.92.Attachment2containstheexistingT/Spagesmarkedtoreflecttheproposedchanges.Attachment3containstheproposedT/Spages.Webelievetheproposedchangeswillnotresultin(1)asignificantchangeinthetypesofanyeffluentthatmaybereleasedoffsite,or(2)asignificantincreaseinindividualorcumulativeoccupationalradiationexposure.TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommitteeandtheNuclearSafetyandDesignReviewCommittee.Incompliancewiththerequirementsof10CFR50.91(b)(1),copiesofthisletteranditsattachmentshavebeentransmittedtotheMichiganPublicServiceCommissionandtotheMichiganDepartmentofPublicHealth.Sincerely,EFE;E.FitzpatrickVicePresidentSWORNTOANDSUBSCRIBEDBEFOREMEehTHIS~~DAYOF1995Attachmentcc:A.A.BlindG.CharnoffJ.B.MartinNFEMSectionChiefNRCResidentInspector-BridgmanJ.R.PadgettNotaryPublic itt ATTACHMENT1TOAEP:NRC:1211DESCRIPTIONANDJUSTIFICATIONOFCHANGES10CFR50.92ANALYSISFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICALSPECIFICATIONS 1I Attachment1toAEP:NRC:1211Page1DESCRIPTIONOFCHANGESTheproposedamendmenttotechnicalspecifications(T/Ss)surveillances;4.1.2.3.1,4.1.2.4,4.5,2.d.2,4.5.2.e,4.5.2f,4.6.2.lb,4.6.2.c,4.7.1.2a,4.7.1.2b,4.7.1.2e,and4.7.1.2fmakethefollowingspecificchangestoCookNuclearPlantUnits1and2T/Ss:S4123Changessurveillance4.1.2.3.1(page3/4l-ll)from:"TheaboverequiredchargingpumpshallbedemonstratedOPERABLEbyverifying,thatonrecirculationflow,thepumpdevelopsadischargepressureofgreaterthanorequalto2390psigwhentestedpursuanttoSpecification4.0.5."To:"TheaboverequiredchargingpumpshallbedemonstratedOPERABLEbyverifyingthatthepump'sdevelopedheadatthetestflowpointisgreaterthanorequaltotherequireddevelopedheadwhentestedpursuanttoSpecification4.0.5."Changessurveillance4.1.2.4(page3/41-12)from:"AtleasttwochargingpumpsshallbedemonstratedOPERABLEbyverifying,thatonrecirculationflow,thepumpdevelopsadischargepressureofgreaterthanorequalto2405psigwhentestedpursuanttoSpecification4.0.5."To:"AtleasttwochargingpumpsshallbedemonstratedOPERABLEbyverifyingthatthepump'sdevelopedheadatthetestflowpointisgreaterthanorequaltotherequireddevelopedheadwhentestedpursuanttoSpecification4.0.5."Changessurveillance4.5.2f(page3/45-5)from:"ByverifyingthateachofthefollowingpumpsdevelopstheindicateddischargepressureonrecirculationflowwhentestedpursuanttoSpecification4.0.5.1.Centrifugalchargingpumpgreaterthanorequalto2405psig 4
Attachment1toAEP:NRC:1211Page22.Safetyinjectionpumpgreaterthanorequalto1409psig3.Residualheatremovalpumpgreaterthanorequalto190psig"To:"Byverifyingthateachofthefollowingpump'sdevelopedheadatthetestflowpointisgreaterthanorequaltotherequireddevelopedheadwhentestedpursuanttoSpecification4.0.5.1.Centrifugalchargingpumps2.Safetyinjectionpumps3.Residualheatremovalpumps"Changessurveillance4.6.2.1b(page3/46-10)from:"Byverifying,thatonrecirculationflow,eachpumpdevelopsadischargepressureofgreaterthanorequalto255psigataflowofgreaterthanorequalto700gpm,whentestedpursuanttoSpecification4.0.5."To:"Byverifyingthateachcontainmentspraypump'sdevelopedheadatthetestflowpointisgreaterthanorequaltotherequireddevelopedhead."Changessurveillance4.7.1,2a(page3/47-6)from:"Verifyingthateachmotordrivenpumpdevelopsanequivalentdischargepressureofgreaterthanorequalto1375psig(1240psigforUnit2)at60Fonrecirculationflow.TQ:"Verifyingthateachmotordrivenauxiliaryfeedwaterpump'sdevelopedheadatthetestflowpointisgreaterthanorequaltotherequireddevelopedhead."
Attachment1toAEP:NRC:1211Page3TS4.712bChangessurveillance4.7.1.2b(page3/47-6)from:"Verifyingthattheturbinedrivenpumpdevelopsanequivalentdischargepressureofgreaterthanorequalto1285psig(1180psigforUnit2)at60'Fandataflowofgreaterthanorequalto700gpmwhenthesecondarysteamsupplypressureisgreaterthan310psig.TheprovisionsofSpecification4'.4arenotapplicableforentryintoMODE3.To.'Verifyingthattheturbinedrivenauxiliaryfeedwaterpump'developedheadatthetestflowpointisgreaterthanorequaltotherequireddevelopedheadwhenthesecondarysteamsupplypressureisgreaterthan310psig.TheprovisionsofSpecification4.0.4arenotapplicableforentryintoMODE3."4.52.d.2452e462c47.12eand4.7.12fDeletethe"daggers"andassociatedfootnotereferencetoTechnicalSpecification4.0.8.ThisreferencewasspecificallyassociatedwithasurveillanceextensionapprovedduringUnit2cycle9-10.Itisnolongerapplicable.II.JUSTIFICATIONFORCHANGESTheproposedtechnicalspecificationchangeeliminatesthesurveillancerequirementtotesttheUnit1andUnit2centrifugalcharging,safetyinjection,residualheatremoval,containmentspray,motordrivenauxiliaryfeedwaterandsteamdrivenauxiliaryfeedwaterpumpsontheirrecirculationlines.Itshouldbenotedthatthecontainmentspraypumpsandsafetyinjectionpumpswillcontinuetobetestedontheirrecirculationflowpathsasaresultofexistingsystemdesign.Thisproposedchangewouldalsoremovethereferencestospecificdischargepressuresandflowsassociatedwiththesepumps.ThischangeisconsistentwiththeassumptionsandguidanceprovidedinNUREG-1431,"StandardTechnicalSpecifications,WestinghousePlants,"whichstates:"Thepurposeforconductingperiodictestingofthepumpslistedaboveistodetectgrossdegradationcausedbyimpellerstructuraldamageorotherhydrauliccomponentproblems.ThistestingisrequiredbySectionXIoftheAmericanSocietyofMechanicalEngineers(ASME)Code.Thetestingdescribedabovemaybeaccomplishedbymeasuringthepumpdevelopedheadatonlyonepointofthepumpperformancecurve.Thisverifiesboththatthemeasured Attachment1toAEP:NRC:1211Page4performanceiswithinanacceptabletoleranceoftheoriginalpumpbaselineperformanceandthattheperformanceatthetestflowisgreaterthanorequaltotheperformanceassumedintheplantsafetyanalysis.SurveillancerequirementsarespecifiedintheInserviceTesting(IST)ProgramwhichencompassesSectionXIoftheASMECode."Thepurposeoftheproposedchangeistoeliminatetherecirculationflowpathrequirementfortestingtheabovepumpsand,whereapplicable,allowtestingofthepumpsutilizingahighcapacityflowpath.Surveillancetestsonpumprecirculationlinesprovidelimitedinformationonthepump/system'sabilitytoperformitssafetyfunction.Thetestperformedonrecirculationoffersonedatapointatminimalflowandhighestpossiblehead,equivalentinmostcasestothepump'sshutoffhead.Suchlowflowoperationcouldproduceunstablehydraulicforceswhichmayresultininaccurateperformancedataandmayalsobedetrimentaltothepump.Pumpperformancetestdatashouldbeobtainedatflowratesascloseaspossibletothepump'sbestefficiencypoint.Atsuchflowrates,'ydraulicforcesarerelativelystableandmoreaccuratedatais.,assured.Furthermore,whilesomepumpdegradationcanbeobservedatbothlowerandhigherflowrates,systemdegradation(e.g.,pipeblockage)canbeobservedonlyatthehigherflowrates,Ingeneral,pump/systemdegradationisfarmoreapparentathigherflowrates.-Testingonhighercapacityflowpathsinsteadofthepump'srecirculationlineis,therefore,preferableinordertoobtainmoreaccuratedata,betterdeterminepump/systemconditions,andminimizelowflowpumpoperation.InadditiontoitsconsistencywithNUREG-1431,theabovediscussionisconsistentwithissuesaddressedinNUREG/CP-0123,"ProceedingsoftheSecondNRC/ASMESymposiumonPumpandValveTesting,"inparticularwithpapersentitled,"PumpTestingintheNuclearIndustry:TheComprehensiveTestandOtherConsiderations(page133),""TestQuality(page159),"and"OperatingPumpsonMinimum.Flow(page557)."TheT/Srequirementlimitingthesurveillancetesttoonlytherecirculationlinealsoplacesunduedemandsonthepump,system,andoperatorsforcertainpumps,likethecentrifugalchargingpumps.Technicalspecificationtestingofthesepumpsontheirrecirculationlinesrequirethepumpstobesecuredfromoperation,thesystemrealigned,andthepumpsrestartedtosupportarecirculationalignment.Byallowingforahighercapacityflowpath,systemrealignmentbecomesunnecessaryandnormaloperationalflowpathsneednotbedisturbed.Operatorflexibilitytotestthepumpsonahighercapacityflowpath,wherepossible,willaidinminimizingrequiredsystemmanipulationsaswellasmaximizingcomponentavailability.
tl~~l' Attachment1toAEP:NRC:1211Page5TheproposedT/Salsoeliminatesspecificflowandpressuresetpointsthatcorrelatewithtestingthecentrifugalcharging,safetyinjection,residualheatremoval,containmentspray,andmotordrivenandturbinedrivenauxiliaryfeedwaterpumpsontheirrecirculationlines.ThespecificflowsandpressuresthatdemonstratethecapabilityofthepumptoperformitsintendedsafetyfunctionareidentifiedintheCookNuclearPlantISTprogram.Theminimumperformancevalues,modeledintheaccidentanalysisoridentifiedastheminimumsystemrequirement,areusedintheISTprogramasthelowestacceptablevaluesforcontinuedoperation.Afinalbenefitofchangingthetestingrequirementsofthecentrifugalcharging,safetyinjection,residualheatremoval,containmentspray,andmotordrivenandturbinedrivenauxiliaryfeedwaterpumpsisthatitwillassureuniformtestrequirementsforT/Spumpswithsimilartestingrequirements.Currently,essentialservicewaterandcomponentcoolingwaterpumpsarerequiredtobetestedinaccordancewiththeISTprogram.SpecificflowandpressurerequirementsaredefinedbytheISTprogramandnottheT/Ssurveillance.Insummary,theproposedchangewillassuretheacquisitionofaccuratedata,betterdeterminepump/systemconditions,andminimizelowflowpumpoperation.Additionally,thechangewillprovidesurveillanceguidanceconsistentwithNUREG-1431,NUREG/CP-0123,andexistingservicewatercomponentT/SscurrentlyresidentinCookNuclearPlantT/Ss.III.10CFR5092CRITERIPer10CFR50.92,aproposedchangedoesnotinvolveasignificanthazardsconsiderationifthechangedoesnot:l.involveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated,2.createthepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated,or3.involveasignificantreductioninamarginofsafety.CriterionThepurposeforconductingperiodictestingofthepumpsidentifiedinthisproposedamendmentistodetectgrossdegradationasrequiredbySectionXIoftheASMECode.TheCookNuclearPlantISTprogram,whichencompassesSectionXIoftheASMECode,isthebasisfortheexistingaswellastheproposedT/Ss.Testingthepumpsutilizingahighcapacity Attachment1toAEP:NRC:1211Page6flowpathinsteadofarecirculationflowpath(whereapplicable)willhavenoimpactontheabilityofthepumptoperformitsintendedfunction.Infact,itisexpectedthatthehighcapacityflowpathwillprovideamoreaccurateassessmentofthepump/systems'onditionsandabilitytomeettheirsafetyfunction.Theremovalofspecifictestparameters,infavorofreferencingtheCookNuclearPlantISTProgram,willnotimpacttheabilityofthepumpstoperformtheirsafetyrelatedfunction.ISTProgramparametersensurethatthepumpsundertestprovidethesupportassumedintheplant'ssafetyanalyses.Therefore,basedontheseconsiderations,itisconcludedthattheproposedchangedoesnotinvolveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated.Crterion2Theproposedchangewillprecludetheneedtorealignselectedpumpstotheirrecirculationflowpathsfortestingpurposes(whereapplicable).Eliminatingtheneedforalignmenttotherecirculationflowpathaidsinmaximizingthepump'savailabilitytoperformitssafetyfunction.Asstatedpreviously,theremovalofthespecifictestparameters,infavorofreferencingtheCookNuclearPlantISTProgramwillnotimpacttheabilityofthepumpstoperformtheirintendedsafetyfunction.Thus,itisconcludedthattheproposedchangesdonotcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.Criterion3Asstatedpreviously,testingoftheselectedpumpsutilizingahighcapacityflowpathwillprovidegreaterassuranceofpumpcapabilityandmaximizepumpavailability.Additionally,removingspecifictestparametersinfavorofreferencingtheCookNuclearPlantISTProgramwillhavenoimpactontheabilityofthepumpstoperformtheirintendedsafetyfunction.Therefore,webelievethatthemarginforsafetyasdefinedin10CFR100hasnotbeenreduced.Basedontheseconsiderations,itisconcludedthatthechangesdonotinvolveasignificantreductioninamarginofsafety.
Jjl ATTACHMENT2TOAEP:NRC:1211EXISTINGTECHNICALSPECIFICATIONPAGESMARKEDTOREFLECTPROPOSEDCHANGES
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