ML17309A255

Revised Tech Spec Table 3.6-1 Re Containment Isolation Valve

ML17309A255
Person / Time
Site:	Ginna
Issue date:	04/16/1982
From:	ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17256A833	List: ML17256A832 ML17256A834 ML17309A255
References
NUDOCS 8204230588
Download: ML17309A255 (11)

Text

COO'4PENT.NO.QO100101TM3IZ3.6-1CONTAINMENT ISOIATION VALVESMAXIMUMISOIATION ISOIATION TIME*(SEC)BOUNDAarISOLATION BOUNlRHYIDENTIFICATION/DESCRIPTION Fueltransfertube(1)(2)(5)(5)(2)MV5129(3)(2)flangeCV370Bcharginglineto"B"locpSIPump1Bdischarge CV889BCV870BCV383B102Alternate chargingto"A"coldleg103Construction FireServiceWaterweldedflangeCV862ACV304AAOV1728MOV313AOV1723(4)60105Containment SprayPumplA106"A"ReactorCoolantPump(RCP)sealwater4linlet107SumpAdlschargetoWasteHoldupTank108RCPsealwateroutandexcessletdowntoVCTMAXIMUMISOIATION TIME*(SEC)60109Containment SprayPumplB110"B"RCPsealwaterinlet110SItest.lineillRHRto"B"coldleg112letdowntoNon-regen.

Heatexchanger 113SIBxrplAdischarge 120NitrogentoAccumulators 120Pressurizer ReliefTank(PRT)toGasAnalyzer(GA)CV862BCV304BMV879MOV720(20)AOV371CV889ACV870ACV8623AOV5396060(3)(2)(5)(6)MV204AMV820(14)(17)(5)(5)AOV846MV546(7)60 PENT.NO.IDENZIFICATION/DESCRIPTION ISOEATION BOUNDARYt'SXIMUMISOIATION TIME*(SEC)ISOIATION BOUNDARYMhXIMUMISOLATION TIME*(SEC)121121121121-123124124125cn126I127129NitrogentoPRTReactorMakeupwatertoPRTCont.Press.transmitter PT-945(10)Cont.Press.transmitter PZ-946(10)ReactorCoolantDrainTank(RCDT)toGAExcessletdownsupplyandreturntoheatexchanger PostAccidentairsample"C"fanCcmponent CoolingWater(CCW)frcm1BRCPCCÃfranlARCPCCNtolARCPGXtolBRCPRCDZ6PRTtoVentHeader130CCWtoreactorsupportcooling131CCNtoreactorsupportcooling132Depressurization at~140RHRpumpsuctionfran"A"Hotleg141RHR-51puqpsuctionfranSumpB142RHR-g2pumpsuctionfrcmSumpB143RCDZpurpsuction201ReactorCcmpart.coolingUnitA6B202"B"Hydrogenreccmbiner (pilot6main)CV528CV529PZ945.PT946AOV1789AOV745CV743NT1569NT1572MOV759BK)V759ACV750ACV750BAOV1787CV1713MOV813K)V814AOV7970M)V701(20)MOV850A(13)M)V850B(13)AOV1721Mv4757(16)MV4636(16)MV1076BMV1084B606060606060MV547(8)AOV508NT1819AMV1819BNT1655(7)(11)(11)MV1571MV1574(12)(12)MOV749AMOV749BAOV1786(19)(19)AOV7971(6)MOV851A(13)MOV851B(13)AOV1003AAOV1003B(11)(11)SOVIV-3BSOVIV-5B60NA.606060606060NA.NormallyClosedNANormallyClosed PENT.NO.IDENTIFICATION/DESCRIPTION ISOIATION BOUNDARYKKZMUMISOLATION TIME*(SEC)ISOIATION BOUNDARYMAXINMISOIATION

.TIME*(SEC)203Contain.Press.transmitter PT-947&948203Postaccidentairsampleto"B"fan204205206206207207I209PurgeSupplyDuctHotlegloopsamplePrzr.liquidspacesample"A"S/GsamplePrzr.Steamspacesample"B"S/GsampleReactorCanpart.coolingUnitsA&B210OxygenmakeuptoA&Brecanbiners 300301303PurgeExhaustDuctAux.steamsupplytocontainment Aux.steamcondensate return"A"Hydrogenrecanbiner (pilotandmain)307FireServiceWater305Radiation MonitorsR-ll,R-12&R-10AAutoInletIsol.305R-ll,R-12&R-10AOutlet305PostAccidentairsample(containrrent)

PT947PT948MV1563MV1566AOV5870AOV966CAOV966BAOV5735AOV966AAOV5736MV4758(16)MV4635(16)MV1080AAOV5878MV6151MV6175MV1084AMV1076AAOV1597CV1599MV1554MV1557MV1560CV92296060606060MV1819CMV1819DMV1565MV1568AOV5869MV956D(14)MV956E(14)MV5733(7)MV956FMV5734(7)(11)(11)SOVIV-2ASOVIV-2BAOV5879MV6165(15)MV6152(15)SOVIV-5ASOVIV-3AMV1596AOV1598MV1556MV1559MV1562AOV92275KNormallyClosedNANormallyClosed5NKNormallyClosedNKNormallyClosedNA60(18)

PENT.NO.IDENPIFICATIOH/DESCRIPTION ISOLATION BOUNRQKMAXIMUMISOIATION ISOZATION TIME*(SEC)BOUNDARYMAXIMMISOLATION TIME*(SEC)308ServiceWaterto"A"fancooler309Leakagetestdepressurization 310ServiceAirtoContain.310Instrument AirtoContain.311ServiceWaterfran"B"fancooler312ServiceWaterto"D"fancooler313Leakagetestdepressurization 315ServiceWaterfran"C"fancooler316317318319ServiceWaterto"B"fancoolerLeakagetestsupplyDeadweighttester(deccmmissioned)

ServiceWaterfran"A"fancooler332Leakagetestandhydrogenjanitorinstrumentation lines320Servicewaterto"C"fancooler321AS/GBlowdown322BS/GBlowdown323ServiceWaterfran"D"fancooler324Demineralized watertoContainmnt332Cont.Press.Trans.PT-944,9496950MV4627(16)flangeCV7226CV5393MV4630(16)MV4642(16)flangeMV4643(16)MV4628(16)flangetubingcapMV4629(16)MV4641(16)AOV5738AOV5737MV4644(16)CV8419PT944PT949PT950MV7448MV7452MV7456SOV921SOV922SOV923SOV92460(>>)M)V7445MV7141AOV5392(11)(11)MOV7444(11)(11)M)V7443cap(11)(11)MV5701(7)MV5702(7)(11)AOV8418MV1819GMV1819FMV1819Ecapcapcap(21)(21)(21)(21)NANormallyClosedNA.60HKNormallyClosedHKNA.NormallyClosedNR60NKHKNK5KHAHK PENT.NO.IDENTIFICATION/DESCRIPZION ISOIATION BOUNDARYMAXIMUMMAXIMUMISOZATION ISOZATION ISOIATION TIME.*(SEC)

BOUNDARYTIME*(SEC)40l402403404l000MainsteamfrcmAS/GMainsteamfranBS/GFeedwater linetoAS/GFeedwater linetoBS/GPersonnel Hatch2000EquipmntHatch"Themaximumisolation timdoesnotincludedieselstarttime.*~ZheMSIVsandfeedwater isolation valvesarenotconsidered tobecontainment isolation valves.Thecontainment boundaryisthesteamgenerator secondary sideandtubes.MV-ManualValveK)V-MotorOperatedValveAOV-AirOperatedValveCV-CheckValveSOV-SolenoidOperatedValve (10)(11)(12)(13)Thepressuretransmitter providesaboundary.'

pNormallyoperating incomingandoutgoinglineswhichareconnected toclosedsystemsinsidecontainment andprotected againstmissilesthroughout theirlength,areprovidedwithatleastonemanualisolation valveoutsidecontainment (FSAR5.2.2pg.5.2.2-2).

Thesingleremotelycontrolled containment isolation valveisnormallyopenandmotoroperated.

Thecoolingwaterreturnlineisnotdirectlyconnected tothereactorcoolantsystemand,shouldremainopenwhilethecoolantpumpisrunning.Asecondautomatic isolation barrierisprovidedbythecomponent coolingwaterloop,aclosedsystem.(FSAR5.2.2pg.5.2.2-1a)

SeeFSARTable5.2.2-1andFigure5.2.2-2.Sumplinesareinoperation andfilledwithfluidfollowing.

anaccident.

Containment, leakagetestingisnotrequired.

Thevalvesaresubjected toRHRsystemhydrostatic test.(14)Normallyoperating outgoinglinesconnected totheReactorCoolantSystemareprovidedwithatleastoneautomatically operatedtripvalveandonemanualisolation valveinserieslocatedoutsidethecontainment.

lnadditiontotheisolation valves,eachlineconnected totheReactorCoolantSystemisprovidedwitharemoteoperatedrootvalvelocatednearitsconnection totheReactorCoolantSystem.(FSAR5.2.2pg.5.2.2-1)(15)(16)SeeFSARTable5.2.2-1andFigure5.2.2-17.

TheServiceWatersystemoperatesatapressurehigherthanthecontainment accidentpressureandismissileprotected insidecontainment.

Therefore, thesevalvesareusedforflowcontrolonlyandneednotbeleaktested.(17)Amanualvalveoutsidecontainment inserieswithanautomatic valveisprovidedfornormallyoperating outgoingRCSlines(FSARpg.5.2.2-1).

(18)FireServiceWaterwillbeusedonlytofightfiresinsidecontainment.

AOV9227isclosedduringpoweroperation.

Acontainment isolation signaltoautomatically closethisvalveisnotrequiredbecauseaspurioussignalduringafiremaybehazardous topersonnel andmayimpedefiresuppression activities.

(19)SeeFSARTable5.2.2-1andFigure5.2.2-16.

(20)Containment leakagetestingisnotrequiredperL.D.White,Jr.lettertoDennisL.Ziemann,USNRCdatedSeptember 21,1978.3.6-10

(21)Acceptable isolation capability isprovidedforinstrument linesbytwoisolation boundaries outsidecontainment.

Oneoftheboundaries outsidecontainment maybeaSeismicClass1closedsystemwhichissubjected toTypeCleakratetesting.I3.6-11 Attachment BTheproposedchangeswillrevisethecontainment isolation valvetable,Technical Specification Table3.6-1,toincorporate plantsystemmodifications.

Penetration 318,thedeadweight.

tester,isnolongerusedforcalibration ofpressurizer instrumentation.

'Decommissioning thepenetration withcapsbothinsideandoutsidethecontainment nearthecontainment wallprovidesasecuremeansofpreventing containment leakage.Removingthevalveoutsidecontainment andreplacing itwithacapreducesthepotential forlineleakageandeliminates theneedfortestingavalveandlinewhichisnotused'hismodification wasperformed afterTable3'-1wassubmitted forNRCapprovalbutbeforethetablewasincorprated intheTechnical Specifications.

Themeansofdecommissioning thistubingpenetration wasdiscussed withtheNRCStaffandverbalapprovalwasgiveninNovember1980.Themodifiedconfigura-tionisconsistent withotherpenetrations notin.servicewhichhavebeenpreviously approvedbytheStaff.Penetration 332,leakagetestinstrumentation lines,istobemodifiedforinstallation ofthecontainment hydrogenmonitorsrequiredbyNUREG-0737.

Leakagefromthelinesinthepenetration initsexistingconfiguration isprevented byacapinsidecontainment andnormallyclosedmanualvalvesoutsidecontainment.

Thisconfiguration wasacceptable fornormaloperation becausethelineswereopenedforuseonlyduringintegrated leakratetestsofthecontainment.

In.themodifiedconfiguration, thecapswillberemovedinsidethecontainment toallowuseofthelinesinpostaccidentconditions formonitoring containment hydrogenconcentrations.

Anacceptable methodofisolating thispenetration istoprovideanisolation valveoneachofthethreetubinglinesbothinsideandoutsidecontainment.

Thisconfiguration tendstoreducethereliability ofthehydrogenmonitorswhichrequirebothseriesvalvesinthesuctionandreturnlinestobeopentoenablesamplingofthecontainment, atmosphere.

Limitations withinthecontainment isolation valverelayracksalsoprohibited addingsixadditional isolation valves,atleastuntiltwonewisolation relayrackcabinetsareaddedtotheplant.Anotheracceptable methodofisolating theselinesistoprovideadesignwhichmeetstheguidelines ofRegulatory Guide1.11andInstrument SocietyofAmerica(ISA)standardS67.02-1980, Nuclear-Safety-Related Instrument SensingLinePipingandTubingStandards ForUseinNuclearPowerPlants.Compliance withthecriteriaofthesedocuments assurethatthedesignisacceptable on"someotherdefinedbasis"asallowedbyGeneralDesignCriterion 56,thecriterion applicable tolinespenetrating thecontainment whichareconnected directlytothecontainment atmos'phere.

Thedeadlineimposedforinstallation ofthehydrogenmonitors hasnotallowedsufficient timetocompletetheanalysisrequiredtodemonstrate thatthereleaseratethroughtheas-designed tubingsystemwillbesufficiently limitedtomeet.l0CPRPart100doselimitations andthattheflowratewillstillbehighenoughtoallowproperfunctioning ofthemonitors.

Analternative definedbasisforisolation ofthesetubinglinesistoprovideredundant, seismically designedbarriersoutsidecontainment whichwillbeprotected fromtheeffectsofeventsinsidecontainment whichrequirecontainment isolation.

Appropriate isolation barrierstomeetthiscriterion includeadministratively controlled closedmanualvalves,closedremotemanualisolation valves,tubecapsandseismically designedclosedsystemoutsidecontainment.

Specifically, thetubebranchlineswhichservetheleaktestinstrumentation (usedonlyperiod-icallyduringoutages)willhaveaclosedmanualvalveineachlinenearcontainment andeachlinewillbedisconnected andcappednearthevalve.Branchlinesservingthehydrogenmonitorswillhaveonenormallyclosedremotemanualisolation valve;alsoclosetothecontainment wall.Eachhydrogenmonitorhasbeendesignedandinstalled tomeetSeismicClassIcriteriaandwillbeleaktestedtoAppendixJTypeCstandards.

Littleadditional protection isprovidedbylocatingoneofthebarriersinsidecontainment ifbothbarriersoutsidecontainment areprotected againstthedynamiceffectsofeventswhichrequireisolation'lant safetyisenhancedbymakingthehydrogenmonitorsavailable forusefollowing LOCAs.Therefore, isolation ofthispenetration bytwobarriersineachtubinglineoutsidecontainment providesacceptable protection againstleakage.Penetration 307,fireservicewater,hastwoisolation valves,checkvalve9229insidecontainment andAOV9227outsidecontainment.

Containment isolation criterianormallyrequirealockedclosedvalveoranautomatic valveoutsidecontainment.

AOV9227isnormallyclosedduringpoweroperation, haspositionindication andtamperindication inthecontrolroomandisremotemanuallycontrolled fromthecontrolroom.AOV9227currently getsacontainment isolation signal.NeproposetoremovethesignalafterNRCapproval.

Theonlytimethisvalvewillbeopenduringpoweroperation isduringafireinsidecontainment.

Underthesecircumstances, itispossiblethatthefirecoulddamagetransmitters orcableswhichcouldgenerateacontainment isolation signalandsubsequently causealossoffirewatertothefirefighters insidecontainment.

Thepotential hazardtothefirefighters isanunacceptable personnel riskandisagreaterriskthanthatposedbyapotential leakagepaththroughredundant.

normallyclosedvalvesfollowing aLOCA.

3Bothpositionindication andtamperindication inthecontrolroomprovideadequateassurance thatAOV9227willbeclosedfollowing eventswhichrequirecontainment isolation withoutrequiring anautomatic closuresignaloralockonthevalve.Alockedvalvemayinhibitquickfirebrigadeaction.Therefore, checkvalve9229andnormallyclosedAOV9227with'amper indication provideadequateprotection ofpublichealthandsafetythroughsome"otherdefinedbasis"asallowedbyGeneralDesignCriteria56.Therefore, theproposedtechnical specification changeswillnotresultinsignificant increases inpotential containment leakagenorincreasetheallowable containment lea'kage.