ML17244A183

Application for Amend to License DPR-18,revising Tech Specs Re Dc Electrical Sys Operation Requirements

ML17244A183
Person / Time
Site:	Ginna
Issue date:	10/10/1978
From:	WHITE L D ROCHESTER GAS & ELECTRIC CORP.
To:
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ML17244A182	List: ML17244A181 ML17244A183
References
NUDOCS 7810230256
Download: ML17244A183 (12)

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~\UNXTEDSTATESOFAMERICANUCLEARREGULATORYCOMMISSIONXntheMatterofRochesterGasandElectricCorporation(R.E.GinnaNuclearPowerPlant,UnitNo.l)))'I)DocketNo.50-244))APPLICATIONFORAMENDMENTTOOPERATINGLICENSEPursuanttoSection50.90oftheregulationsoftheU.S.NuclearRegulatoryCommission(the"Commission"),RochesterGasandElectricCorporation("RG&E"),holderofProvisionalOperatingLicenseNo.DPR-18,herebyrequeststhattheTechnicalSpecifica-tion3.7setforthinAppendixAtothatlicensebeamendedtomodifytherequirementsforoperabilityofthed.c.electricalsystems.ITheproposedtechnicalspecificationchangeissetforthinAttachmentAtothisApplication.AsafetyevaluationissetforthinAttachmentB.Thisevaluationalsodemonstratesthattheproposedchangedoesnotinvolveasignificantchangeinthetypesorasignificantincreaseintheamountsofeffluentsoranychangeintheauthorizedpowerlevelofthefacility.Justi--ficationforclassificationoftheamendmentpursuantto10CFRSection170.22isincludedasAttachmentC.AcheckfortheappropriatefeeaccompaniesthisApplication.

WHEREFORE,ApplicantrespectfullyrequeststhatAppendixAtoProvisionalOperatingLicenseNo.DPR-18beamendedintheformattachedheretoasAttachmentA.RochesterGasandElectricCorporationByL.D.Nhie,Jr.VicePresident,.ElectricandSteamProductionSubscribedandsworntobeforemeonthis/O-dayofOctober,1978.SHARONG.CAVALERINOTARYPUBLIC,StateofN.Y.,h'lonroeCountyMyCommfssionExpiresMarch30,29/.g AttachmentAReplaceTechnicalSpecificationpages3.7-1through3.7-4withtherevisedpages3.7-1through3.7-4.

3.7AUXILIARYELECTRICALSYSTEMSAplicabilitAppliestotheavailabilityofelectricalpowerfortheoperationofplantauxiliaries.Todefinethoseconditionsofelectricalpoweravailabilitynecessary(1)toprovideforsafereactoroperation,and(2)toprovideforthecontinuingavailabilityofengineeredsafeguards.Secification3.7.1Thereactorshallnotbemaintainedcriticalwithout:a.The34.5KV-4160Voltstationservicetransformerinservice.b.480-voltbuses14,16,17and18energized.c.4160-voltbuses12Aand12Benergized.d.Twodieselgeneratorsoperablewithonsitesupplyof10,000gallonsoffuelavailable.e.Bothbatteriesandbothd.c.systemsoperable,andratleastone150ampbatterycharger-ortwo75ampbatterychargersinserviceforeachbattery.3.7.2Duringreactoroperationtherequirementof3.7.1maybemodifiedasfollows:3~71 a.Poweroperationmaycontinuewith'thestationservicetransformeroutofserviceprovided(a)thefailureshallbereportedtoNRCwithin24hourswithanoutlineoftheplansforpromptrestorationofoffsitepowerandthe.additionalprecautionstobetakenwhilethetransformerWisoutofserviceand(b)bothdiesel.generatorsareoperable.Underconditionsoffulfillmentof(b)andnon-fulfillmentof(a),continuedpoweroperationshallnotextendbeyond24hours.Non-fulfillmentof(b)shallbeide'emedsufficientcauseforimmediatereactorshutdown.b.Poweroperationmaycontinueifonedieselgeneratorisoutofserviceprovided(a)theremainingdieselgeneratorisruncontinuously,and(b)thestationservicetrans-formerisinserviceand(c)suchoperationisnotinexcessof7day(totalforbothdiesels)duringanymonth.c.Poweroperationmaycontinueifthebatterycharger(s)forloned.c.systemareinoperable,aslongastheinoperablebatterychargersarerestoredtooperablestatuswithintwohours.Ifnotrestored,thereactorshallbeplaced;:inthehotshutdownconditionwithinthenextsixhoursandinthecoldshutdownconditionwithinthefollowing30hours..Basis:'i(Theelectricalsyst'mequipmentisarrangedsothatnosinglecontingencycaninactivateenoughsafeguardsequipmenttojeopardizetheplantsafety.The480-voltequipmentisarranged3~72 on6buses.The4160-voltequipment,alsoissuppliedfrom4buses.Twoseparateoutsidesourcessupplystationservicepowertotheplant.Theplantauxiliaryisarrangedelectricallysothatmul-tipleitemsreceivetheirpowerfromthetwodifferentsources.Thechargingpumpsaresuppliedfromthe480-voltbusesNo.14and16.Thefourcontainmentfansaredividedbetween480-voltbusesNo.14and16.Thetworesidualheatpumpsareonseparate480-voltbuses.motorcontrolcenters.ValvesaresuppliedfromIOneoutsidesourceofpowerisrequiredtogivesufficientpowertorunnormaloperatingequipment.Onetransmissionlinecansupplyalltheplantauxiliarypower.The115-34.5kvstationservicetransformercansupplyalltheauxiliaryloads.Thebusarrangementsspecifiedforoperationensurethatpowerisavailabletoanadequatenumberofsafeguardsauxiliaries.Withadditionalswitching,moreequipmentcouldbeoutofservicewithoutinfringingonsafety.Twodieselgeneratorshavesufficientcapacitytostartandrunatdesignloadalltheengineeredsafeguardsequipment.TheS/safeguardsoperatedfromonedieselgeneratorcanadequatelylCcoolthecoreforanyloss-of-coolantincident,andtheyalso3~73 maintainthecontainmentpressurewithinthedesignvalue.Theminimumdieselfueloilinventoryatalltimesismaintainedtoassuretheoperationofbothdieselscarryingdesignloadofalltheengineeredsafeguardsequipmentforatleast40hours.-Commercialoilsuppliesandtruckingfacilitiesexisttoassuredeliverieswithin8hours.Atleastone150ampbatterychargerortwo75ampbatterychargersshallbein.serviceforeachbatterysothatthebatterieswilltalwaysbeatfullcharge.Thisensuresthatadequatedcpowerwillbeavailable.Theplantcanbesafelyshutdownwithouttheuseofoffsitepowersinceallvitalloads(sa'fetysystems,instrumentsetc.)canbesuppliedfromtheemergencydieselgenerators.Thetwodieselgenerators,eachcapableofsupplyingsafeguardsloads,andthestationauxiliarytransformerprovidethreeseparatesourcesofpowersupplysystemmeetsthesinglefailurecriteriarequiredofsafetysystems.(2)\Refernces:(1)FSAR-(2)FSAR-Section-8.2.1Appendix8Asjpl3.7-4 Attachment.BTechnicalSpecification3.7.1epresentlyrequiresthatonlyonebatterycharger(whichhasa150ampcapacity)needstobeoperablewhilethereactoriscritical.Thetotalnormald.c.loadispresentlyabout170amps.Twoadditionalbatterychargers,eachwitha75ampchargingcapacity,havebeeninstalled.Withallbatterychargersoperationalandintheirnormalconfiguration,thereisatotalbatterychargercapacityof225ampsperbattery.Intheeventeitherofthe150ampbatterychargersbecomesinoperable,manualtransferofone75ampbatterychargerwillresultinabatterychargercapacitytoeachbatteryof150amps.Thisconfigurationandcapacityisconsistent.withtheguidanceprovidedinRegulatoryGuides1.6and1.32.RegulatoryGuide1.6,Rev.0,positionD.3,statesthat"eachd.c.loadgroupshouldbeenergizedbyabatteryandbatterycharger.Thebattery-chargercombinationshouldhavenoautomaticconnectiontoanyotherredundantd.c.loadgroup."Thisguidanceissatisfiedbyhavingonlymanualconnectionbetweend.c.loadgroups.Regulatory~P'Guide1.32,Rev.2,SectionC.l.b,statesthat"...thecapacityofthebatterychargersupplyshouldbebasedonthelargestcombined+emandsofthevarioussteadystatesloadsandthechargingcapacitytorestorethebatteryfromthedesignminimumchargestatetothefullychargedstate,irrespectiveofthestatusoftheplantduringwhichthesedemandsoccur."

'Thenormalcontinuousloadoneachd.c.systemisapproxi-mately85amps.TheshutdownloadsthatarerequiredintheeventofalossofoffsitepowerarelistedinFSARTable8.2-.2.Theonlysteadystate(8hour)loadlisted,otherthanthein-verter,whichoperatebothduringnormaloperationandforsafeplantshutdown,istheTurbine-DrivenAuxiliaryFeedwaterPumpDCOilPump.Thispumprepresentsanadditionalpotential22amploadonBattery1B.Thelargestpossiblecombinedload-couldthusoccurduringaplantshutdownfollowinglossofoffsitepower,whenallnormalloadcontinuedoperating,andtheturbine-drivenauxiliaryfeedwaterpumpwasalsoengaged.Thiscombinedloadof85ampsplus22amps,foratotalof107amps,ismuch'-lowerthanthecapacityofthe150ampbatterychargers.ItisthereforeapparentthatthebatterychargersizingcriteriaofRegulatoryGuide1.3.2,andIEEE308-1974,Section5.3.4areeasilymet.Ifthebatterychargerforoned.c.systemwerefoundtobeinoperable,itwouldbepossibleinmostcasestoeffectrepairsandrestorethesystemtooperabilitywithinarelativelyshortrtime.Thisconfigurationwouldnotnegatetheabilityofthed.c.Isystemtoperformitsfunction,butitwouldreducetheredundancyprovidedinthereactordesi.'gn,andtherebylimittheabilitytotolerateadditionalequipmentfailures.(Althoughit'shouldbenotedthatthebatteriesbythemselvescouldcarryallshutdownlloadsfor-8hours).Theredundantd.c.systemwouldbethoroughlycheckedtoensureitsoperability.Ifitdevelopedthatthe

~~~inoperabled.c.systemcouldnotbemadeoperablewithintwohours,thereactorwouldbeplacedinthehotshutdowncondition,toprovideforreductionofdecayheatfromthefuel.Ifafteranothersixhoursthemalfunctionwerenotcorrected,thereactorwouldbeplacedinacoldshutdownconditionwithin30hours,usingnormalshutdownandcooldownprocedures.ThesetimeperiodsareconsistentwiththeguidanceprovidedinRegulatoryGuide1.93,Rev.0,"AvailabilityofElectricPowerSources",RegulatoryPosition5.rP'

~~IAtt'achme'ntC.TheproposedAmendmenttotheProvisionalOperatingLicensehasbeenevaluatedanddeterminedtofallwithinthedefinitionofClassIIIof10CFRSection170.22therebyrequiringafeeof$4,000.Theproposedamendmentsimplyclarifiesasinglesafetyissue,batterychargercapacity.TheissuehasbeenclearlyidentifiedbyNRCregulatoryguides.C P~t