ML17335A210

Application for Amends to Licenses DPR-58 & DPR-74,deleting Wording When Secondary Steam Supply Pressure Is Greater than 310 Psig from TS

ML17335A210
Person / Time
Site:	Cook
Issue date:	08/01/1997
From:	FITZPATRICK E INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17335A211	List: ML17335A210 ML17335A212
References
50-315-97-04, 50-315-97-4, 50-316-97-04, 50-316-97-4, AEP:NRC:0906H, AEP:NRC:906H, NUDOCS 9809110031
Download: ML17335A210 (14)

Text

S'~CATEGORY1REGULATORYINFORMATIONDISTRIBUTIOYSTEM(RIDS)ACCESSIONNBR:9809110031DOC.DATE:97/08/01NOTARIZED:YESDOCKETIFACIL:50-315,DonaldC.CookNuclearPowerPlant,Unit1,IndianaM0500031550-316'DonaldC.CookNuclearPower,Plant,Unit2,IndianaM05000316AUTH.NAME.AUTHORAFFILIATIONFITZPATRICK,E.EIndianaMichiganPowerCo.(formerlyIndianaEMichiganEleRECIP.NAMERECIPIENTAFFILIATIONRecordsManagementBranch(DocumentControlDesk)

SUBJECT:

ApplicationforamendstolicensesDPR-58&DPR-74,revisingTS4.7.1.2returbinedrivenauxiliaryFW.DISTRIBUTIONCODE:AOOIDCOPIESRECEIVED:LTRIENCLLSIZE:9+TITLE:ORSubmittal:GeneralDistributionNOTES:ERECIPIENTIDCODE/NAMEPD3-3LASTANG,JINTERNAFILECERRDE/EMCBNRR/DSSA/SPLBNUDOCS-ABSTRACTCOPIESLTTRENCL111'11111111RECIPIENTIDCODE/NAMEPD3-3PDNRR/DE/ECGB/ANRR/DRCH/HICBNRR/DSSA/SRXBOGC/HDS3COPIESLTTRENCL1111111110-0EXTERNAL:NOAC11NRCPDR11DNNOTETOALLURIDSNRECIPIENTSPLEASEHELPUSTOREDUCEWASTE.TOHAVEYOURNAMEORORGANIZATIONREMOVEDFROMDISTRIBUTIONLISTSORREDUCETHENUMBEROFCOPIESRECEIVEDBYYOUORYOURORGANIZATION,CONTACTTHEDOCUMENTCONTROLDESK(DCD)ONEXTENSION415-2083eTOTALNUMBEROFCOPIESREQUIRED:LTTR13ENCL12 IndianaMichigan~PowerCompany500CircleDriveBuchanan,Ml49107I395INDIANAMICHIGANPOWERAugust1,1997AEP:NRC:0906HDocketNos.:50-31550-316U.S.NuclearRegulatoryCommissionATTN:DocumentControlDeskWashington,D.C.20555Gentlemen:DonaldC.CookNuclearPlantUnits1and2TECHNICALSPECIFICATIONCHANGEREQUEST4.7.1.2Thisletteranditsattachmentsconstitutean~applicationforamendmentofthetechnicalspecifications(T/Ss)forCookNuclearPlantunits1and2.Specifically,weareproposinga,changetoT/S4.7.1.2foreachunit.Theproposedchangewilldeletethewording"whenthesecondarysteamsupplypressureisgreaterthan310psig"fromtheT/S.Thiswordinghasbeenfoundtobeambiguousandcanbemisinterpretedtomeanthattheturbinedrivenauxiliaryfeedwater(TDAFP)pumpmustachievedesignconditionswhentestedwithaninletsteampressureof311psig,aconditionthatisnotachievable.TheT/Swording,whichrequiresthattheTDAFPdevelopitsrequiredheadwhenthesecondarysidepressureisgreaterthan310psig,wasatopicofdiscussionbetweenAEPpersonnelandtheNRCresidentinspector-(seeinspectionreport50-315/316-97004(DRP)datedMay6,1997).ThesurveillancetestprocedurethatisusedtocomplywiththeT/Sdirectspersonneltotestthepumpatitsdesignspeed,4350rpm,andestablishaflowrateof700gpm.Oncetheseconditionshavebeenestablished,theresultingdifferentialpressureismeasuredandcomparedtoareferencedifferentialpressurevalue.Differencesbetweenthemeasuredvalueandthereferencevalue-arethencomparedandevaluatedforsignsofdegradation.Thistesthasbeenroutinelyconductedatasecondarysidepressureofbetween500and900psig,anditisourpositionthatthissecondarysidepressuremeetsthepresentT/SrequirementtotesttheTDAFPatasecondarysidepressuregreaterthan310psig.However,asnotedintheinspectionreport,"Theinspector'sconcernscenteredonthequestionofwhetherthelicenseewasrequiredtoperformthesurveillancetestatjustgreater.than'310psig(e.g.,311psig).",qg<>qgjoosg97080iPDRADOCK050003i5PPDRpp'ELL

~.~IIi U.S.NuclearRegulatoryCommissionPage2IAEP:NRC:0906HOurinvestigationoftheTDAFPsurveillancehasshownthatthe310psigvaluecontainedintheT/Sisnotrelatedtoassumptions.orsafetyanalysesaddressedintheUFSARchapter14events.Thereareseveralaccidentsidentifiedinchapter,14thatdescribeoperationoftheauxiliaryfeedwatersystemaseitheraprimaryorbackupresourceforcopingwiththetransient.Thesetransientsincludelossofnormalfeedwater,lossofoffsitepower,lossofload,steamlinerupture,andfeedlinebreak.Ofthese,onlythefeedlineruptureanalysistakescreditfortheperformanceoftheTDAFP.Areview,ofthesteamgeneratorpressurecurvesprovidedintheUFSARforthisevent,figures14.2.8-8and14.2.8-4,indicatethatatthetimeauxiliaryfeedwaterflowisinitiated,thesteamgeneratorpressureisabove550psiaandthenincreasestothesteamgeneratorsafetyvalvesetpoint.TheUFSARchapter14.2.8analysisstatesthattheauxiliaryfeedwaterflowconditionsare685gpmtoasteamgeneratoratapressureof1133psia.Undertheseconditions,thepressureattheTDAFPinletisfargreaterthanthe310psigstatedintheT/S,confirmingouropinionthatthisvalueisnotrelatedtotheaccidentanalysis.Thefollowingcommentintheinspectionreportacknowledgesourconclusion."...theinspector'sreviewofthedesignbasisandlicensingbasisoftheTDAFWPconfirmedthelicensee'sstatementthattheTDAFWPswerenottakencreditforinanyaccidentanalysisatthesecondarysidepressureof310psig."Attachment1tothisletterprovidesadetaileddescriptionoftheproposedchanges,thejustificationofthechanges,andourdeterminationofnosignificanthazardsconsiderationperformedpursuantto10CFR50.92.Attachment2containstheexistingT/Spagesmarkedtoreflecttheproposedchanges.Attachment3containstheproposedT/Spages.Webelievetheproposedchangeswillnotresultin:(1)asignificantchangeinthetypesofanyeffluentthatmaybereleasedoffsite;or(2)asignificantincreaseinindividualorcumulativeoccupationalradiationexposure.Theseproposedchangeshavebeenreviewedandapprovedbytheplantnuclearsafetyreviewcommitteeandwillbereviewedbythenuclearsafetyanddesignreviewcommitteeatthenextscheduled.meeting.Incompliancewiththerequirementsof10CFR50.91(b)(1),copiesofthisletteranditsattachmentshavebeentransmittedtotheMichiganPublicServiceComm'issionandMichiganDepartmentofPublicHealth.TheT/SpagessubmittedwiththisletterwillbeimpactedbytheT/S.pagechangessubmittedinourAEP:NRC:0433Pletter,"AdministrativeCorrections",datedMarch26,1997.Themarkupsattachedtothissubmittaldonotaccount,foranyapprovalor

U.S.NuclearRegulatoryCommissionPage3AEP:NRC:0906HincorporationofthesubmittalsinAEP:NRC:0433P,butreflecttheT/Spagesintheircurrentstate.Sincerely,E.E.FitzpatrickVicePresidentSWORNTOANDSUBSCRIBEDBEFOREMETH"S/~DAYOFNCUS71997NotaryPublicMyCommissionExpires:-/-0(vlbAttachmentsUNDALBOELCKENoiaryPubhc,BerrienCounty,MiMyCommissionExpiresJanuary21,2001A.A.BlindA.B.BeachMDEQ-DW&,RPDNRCResidentInspectorJ.R.Padgett P

ATTACHMENT1TOAEP:NRC:0906HDESCRIPTIONANDJUSTIFICATIONOFCHANGES10CFR50.92ANALYSISFORCHANGESTODONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICALSPECZFICATIONS Attachment1toAEP:NRC:0906HPage1DescritionofChaneTheproposedchangewouldmodifytechnicalspecification(T/S)4.7.1.2.gbydeletingthewords:"whenthesecondarysteamsupplypressureisgreaterthan310psig"ZZ.JustificationForChaneAspresentlywritten,T/S4.7.1.2.binstructsthelicenseetodemonstratethateachauxiliaryfeedwaterpumpisoperableby:"Verifyingthattheturbinedrivenauxiliaryfeedwaterpump'sdevelopedheadatthetestflowpointisgreaterthanorequaltotherequireddevelopedheadwhenthesecondarysteamsupplypressureis"greaterthan310psig."The,wordsgreaterthan310psig"areambiguousandcanbemisinterpretedasmeaningthatthepumphastobetestedwhenthesteampressureisaslowas311psig.At311psigsteampressure,aconditionwhichisnotrepresentativeoftheaccidentconditions(feedwaterlinebreak),testingconductedin1994demonstratedthatthepumpwouldnotreachitsratedspeed,norcoulditdelivertheflowrequiredbythetestprocedure.However,bytheuseofthepumpaffinitylaws,itispossibletodemonstratethatthepumpiscapableofdeliveringadequateflowunderaccidentconditionsat311psig~Thepumpiscurrentlytestedatitsdesignspeedof4350rpm,andtheflowrateisestablishedat700gpm,aconditionthatismorerepresentativeofactualpumpcapability.Thistestconditionensuresthattheturbinegovernoriscontrollingthepumpspeedatthedesignspeed;itteststhepumpataflowconditionthatenablespumpdegradationtobemoreeasilydiscerned;and,itminimizesvariabilityduetotestinstrumentation.Experiencehasdemonstratedthataturbinedrivenauxiliaryfeedwaterpump(TDAFP)testperformedat4350rpmand700gpmrequiresasteampressureof500psigorgreater.Byuseofthepumpaffinitylaws,theresultsofthissinglepointtestcanbecorrelatedwiththeperformancerequiredunderaccidentconditions.ZZZ.10CFR50.92AnalsisAccordingto10CFR50.92,aproposedamendmentwillnotinvolveasignificanthazardsconsiderationiftheproposedamendmentdoesnot:(1)involveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated;(2)createthepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated;or

Attachment1toAEP:NRC:0906HPage2(3)involveasignificantreductioninamarginofsafety.CRITERION1rTheproposedchangeswillnotsignificantlyincreasetheprobabilityorconsequencesofanaccidentpreviouslyevaluated.Thisisanadministrativechangeintendedtoclarifythetechnicalspecification.Therewillbenochangetothetestprocedureasaresultofthisclarification.TheproposedchangebettercorrelateswiththeaccidentrequirementsforwhichTDAFPflowisrequired,andthechangeisconsistentwiththepresentrequirementoftestingtheTDAFPatasecondarysidepressuregreaterthan310psig.CRITERION2Theproposedchangeswill'notcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.Theproposedchangedoesnotphysicallymodifytheplant,nordoes,itresultintheinstallationofequipmentwhichcouldintroduceanewfailuremechanism.CRITERION3Theproposedchangedoesnotinvolveasignificantreductioninamarginofsafety.Theproposedchangedoesnotaffecttheperformanceof-theTDAFP.Thus,theTDAFPremainscapableofprovidingtherequiredflowunderaccidentconditions,andnosafetymarginsarereduced.Thisisanadministrativechangeintendedtoclarifythetechnicalspecification.Therewillbenochangetothetestprocedureasaresultofthisclarification.

L0

~~ATTACHMENT2TOAEP:NRC:0906HEXISTINGTECHNICALSPECIFICATIONPAGESMARKEDTOREFLECTPROPOSEDCHANGES e