ML17301A024

Forwards Info Demonstrating Capability of post-accident Sampling Sys,Closing Out SER Open Items. Interim Procedure Guideline for Core Damage Assessment Also Encl

ML17301A024
Person / Time
Site:	Saint Lucie
Issue date:	03/04/1983
From:	UHRIG R E FLORIDA POWER & LIGHT CO.
To:	EISENHUT D G Office of Nuclear Reactor Regulation
Shared Package
ML17213B100	List: ML17213B099 ML17301A024
References
RTR-NUREG-0737, RTR-NUREG-737 L-83-122, NUDOCS 8303090340
Download: ML17301A024 (39)

Text

RE.DLSTORvP.R.ATIONOISTRIBOTIONSTNIRIDS>ACCESSION%<BRi8303090300DOC~DATE:83/03/00NOTARIZED;NOFAOIL;50-389St,LuciePlantEUni't2EFlorida,PowerLLightCo.AUTH~NAMEAUTHORAFFILIATIONUHRIGgR,E~Flor,idaPower8LightCo,.RECIP,NAIVERECIPIENTAFFILIATIONEISENHUTEDBG.DivisionofLicensing~8<~DOCKET05000389

SUBJECT:

ForwardsinfodemonstratingcapabilityofpostaccidentsamplingsysclosingoutSERopeni.tems.."InterimProcedureGuidelineforCoreDamageAssessment"alsoencl,DISTRIBUTIONCODE:BOOISCOPIESRECEIVED:LTR.ZENCLgSIZE:~~+L+~TITLE!LicensingSubmittal:pSAR/FSARAmdts8RelatedCorrespondence'OTES:RECIPIENTIDCODE/NAMFA/OLICENSNGLICBR03LAINTERNAL!ELO/HDS2IE/OEPEPOS35NRR/OF/AEABNRR/OE/EQB13.NRA/OE/HGEB30NRR/OE/MTEB'7NRR/OE/SAB20BIRR/OHFS/HFE000NRR/DL/SSPBNRA/DsI/ASBNRR/OSI/CSB09NRR/DSI/METB12AB2?GFIL04R/MIBEXTFRNAL~ACRSQlDMB/DSS{AMDTS)LPDR03NSIC05COPIESLTTRENCL10101011102111111011111111106611111RECIPIENTIDCODE/NAMELICBR43BCNERSESEV~01IEFILEIE/DEP/EPLB36NRR/OE/CEB11NRR/DE/CB28NRR/DE/MEB18NRR/DE/QAB21NRR/DE/SEB25NRR/DHFS/LQB32NRR/DSI/AEB26NRR/DSI/CPS10NRR/DSI/ICSB16NRR/OSI/PSB19NRR/DSI/RSB23RGN2BNL(AMOTSONLY)FEMA"REPDIV39NRCPDR02NTISCOPIESLTTRENCL1011113112211111111111'1111311111111TOTALNUMBEROFCOPIESREQUIRED.LTTR52ENCL45 AIllI+IlfJ)riffIfitItJtjf>'W(fffffrffl'flittffflittrNtfIWr'ilt'fearf<<ff'>>tt~'lErt$"llitf(flItillff9(p1)'I11ytrr<<f(liffff'1.((~,S(tr~.'fI((f"'t&III),'jljrA~I'gNtf(IXtIf1'"PjrI,lfIirtikIifrltf,*'i,f,Il>>rrI4

.BOX14000,JUNOBEACH,FL33408FLORIDAPOWER8(LIGHTCOMPANYMarch4,1983L-83-122OfficeofNuclearReactorRegulationsAttention:Mr.DarrellG.Eisenhut,DirectorDivisionofLicensingU.S.NuclearRegulatorycommissionWashington,D.C.20055

DearMr.Eisenhut:

Re:St.Lu"ieUnitNo.2DocketNo.50-389PostAccidentSamlinSstemCaabilitInSupplement2oftheSER,thestaffrequestedtheapplicant,by5%power,todemonstratethecapabilityofthePostAccidentSamplingSystemto:1)Provideforachlorideanalysiswithin4daysafterthereactorcoolantsampleistaken;2)Providethecapabilitytoidentifyandquantifytheactivityforreactorcoolantandcontainmentatmospherepostaccidentsamples;3)Provideaprocedureforrelatingradionuclidegaseousandionicspeciestoestimatecoredamage.Theattachedinformationisprovidedtocloseouttheaboveopenitems.Thisinformationhasbeeninformallygiventoyourstaffforreviewandfoundtobeacceptable.Inaddition,thepresentSt.LucieUnit2chemi"calprocedureshaveincorporatedthemethodologyforestimatingcoredamageperthedescriptionprovidedinitem3.Ifyouhaveanyquestionsregardingthissubmittal,pleasecontactus.Verytrulyyours,RobertE.UhrigVicePresidentAdvancedSystems&TechnologyREU/RJS/cab8303090340830304PDRADOCK05000389PDRPEOPLE...SERVINGPEOPLE 8303090340POST-ACCIDENTSAMPLINGSYSTEMSuPPLEMENTALINFORMATION b'.

TABLEOFCONTENTSCriterion1Criterion2Criterion3Criterion4Criterion5Criterion6Criterion7Criterion8Criterion9Criterion10Criterionll~Pae137710ll1314151719Attachment1InterimCoreDamageProcedure

~~~Criterion:(1)Thelicenseeshallhavethecapabilitytopromptlyobtainthereactorcoolantsamplesandcontainmentatmospheresamples.Thecombinedtimeallotted,forsamplingandanalysisshouldbe3hoursorlessfromthetimeadecisionismadetotakeasample.Response:TheattachedPertchartpresentsaconservativeestimateoftimerequiredforoneexeriencedoperatortoperformPASSrecirculation,analysis,anddilutionproceduresasdescribedintheoperatingproceduresofthePASSTechnicalHanual.ThetimesshowninthecharthavebeenverifiedthroughfieldoperationofasimilarC-EPASSattheSanOnofreUnit2plant.ThePASSisdescribedinSection9.3.6oftheFSAR.ThePASSLaboratoryislocatedintheReactorAuxiliaryBuilding(RAB)onthegroundlevel19.50'levation.TheRadiochemistrySampleRoomislocatedintheRABonthesameelevationasthePASSLaboratory.TheSampleRoomandthePASSLaboratoryareonthesamehallwayapproximately40feetapart.ThePASSperformsthechemistryanalysisforboron,pH,totaldissolvedgas,hydrogenandoxygenoffgas,anddissolvedoxygenusingon-lineinstrumentationwithbackupgrabsamplingcapability.Analysisofchloridesandradiologicalfissionproductanalysisisperformedthroughgrabsamples.ThesesamplesareanalyzedintheRadiochemistrySampleRoom.,GrabsampletransporttotheSampleRoomisperformedbytwomeans.ThefirstmeansoftransportistheGrabSampleFacility.TheGrabSampleFacilityprovidesthecapabilitytocollectanundilutedreactorcoolantliquidgrabsample.TheGrabSamplingFacilityconsistsofanundiluteddepressurizedliquidsamplevesselenclosedinaleadshieldedcask,isolationandbypassvalveswithstemextensionspenetratingtheshieldingforconnectiontothePASS, apalletlifthandtruck,anddoubleendshut-offquickdisconnects'orinterfaceconnectionstothePASSsamplestationliquidsamplereturnline.Samplingisperformedasfollows:Thehandtruckcontainingthecask.ismaneuveredtothePASSsamplestationliquidsamplereturnlineteesandtheassemblyisconnectedtothesystembymeansofthedoubleendedshut-offquickdisconnects.Onceconnected,thegrabsamplingassemblyisflushedwithdemineralizedwaterviathePASSsamplestationconnection.Theliquidsamplepathpressureindicator(P-503)canbeusedtocheckforleaksbeforeanycontaminatedfluid'sallowedtoenter.Followingsatisfactorypressurization,anundilutedsampleispurgedthroughthePASS.Whenarepresenta-tivereactorcoolantsampleisavailable,thesamplevesselandconnectionteeisolationvalvesareopenedtoallowflowthroughtheUndilutedLiquidSampleVesselandtheGrabSamplingFacilitybypassvalveisclosed.Whenpurgingofthesamplevesseliscomplete,thesampleisisolatedbyopeningthebypassvalveandclosingtheisolationvalves.SamplepurgeflowthroughthePASSissecured.Priortodisconnectingthecask,ademineralizedwaterflushisaccomplishedbyestablishingflowviathePASSsamplestationconnectionthroughthenormalliquidsamplereturnlinepath.TheconnectionteeisolationvalvesareopenedandtheGrabSamplingFacilitybypassvalveisclosed,allowingade-'ineralizedwaterflushofalltubingexceptforthesamplevesselandisolationvalves.Thisminimizesradiationexposureandthepossibilityfocontaminationwhenthecaskisdisconnected.Thecaskisdisconnectedfromthesystembymeansofmanuallydetachingthedoubleendshut-offquickdisconnects.Thecaskisthentrans-portedonthepalletlifthandtrucktotheRadiochemistrySampleRoom..

0

• Sulu~IIVII'1.l.Till:INSSSTSTLIAI.IIKnfnltn.NCATTAACNIOAItl.lnvurtlrATIOCIANLTltnttfoONt,1tlOFLAATORIttINC*55ROOM(Tpnt/LcIlcct(SULNF~IAT)lt@CARIcoIIAFntlttIAIURSFINRI'UUFnccntcsAIIFLcIIIIICJVCJICONT,AINMLtll5AINLS"-"'""'-"*"'"'""""'0COLLSCTUNCALVILOCIIAOSAMFLEOfOC>SILO)ALLOWSTSIEMTEMFTRATVntTOSTAOILTLCSwIICNfLOWtO6SAMFLF.FAIN)CAIIIIRATCTIKOtAN2ANALTTLRSSIAnrncActonCCOLACCTSAUFIL(QtCIACUIAFSFM)FURCLItfcon0oononsFllIILAOFIOSAI.LO'K.AMFT.O~amrruLFlNLATMSASCAICTOTALCASICOCTACSLCURSLIOUIOfIICNANCSR10ntlilAI.TOTALSCCTfSAAITEAu~rLowcooLootnlCASTCLUMSgTtncttcttATTMTASUREOISSOLYTOCOLLTCTAIttAOtOLUILOCASAICALTZLRSygAOSAMFIFCOLLTCTAINLUIEOLIOIPO0SAMFLC0.0$OtI5OttoKNOS1t051tuf,SFANSAntMFAIITSNISUtnIISOIISOf0202:5$":-~-5..IFowsnL:.22~SISItuSTtt:.SfotmTttttrOTTTtefoSTACCIDETTTFUULSLSKTSYSTTIA%05~="IS-ittnST.LLTcIETnsf2~tiltI~IU~uk'L~~t\I

Thesecondmeansoftransportisviasamplesyringes.Thedilutedsamplesareobtainedthroughseptumplugslocatedbehindasmallpenetrationintheshieldwallusingasyringeforsamplewithdrawal.Standardlaboratorysyringesareemployedforthispurpose.FollowingremovalofadilutedsamplethesyringeiscappedtopreventlossofthesampleandplacedinahandheldcontainerandtransportedtotheRadiochemistrySampleRoom.TheresponsetoCriteria(6)addressestheradiationprotectionaspectsofGrabSamplehandling.ThePASSisdesignedwiththecapabilitytosampleundertheconditionofalossofoffsitepower.ThePASSissuppliedwithelectricpowerfroma120/208NABpowerpanelwhichisconnectedtothedieselgenerator.~~Criterion:(2)Thelicenseeshallestablishanonsiteradiologicalandchemicalanalysiscapabilitytoprovide,withinthree-hourtimeframeestablishedabove,quantificationofthefollowing:(a)certainradionuclidesinthereactorcoolantandcontain-mentatmospherethatmaybeindicatorsofthedegreeofcoredamage(e.g.,noblegases;iodinesandcesiums,andnon-volatileisotopes);(b)Hydrogenlevelsinthecontainmentatmosphere;(c)dissolvedgases(e.g.,H2),chloride(timeallottedforanalysissubjecttodiscussionbelow),andboronconcentra-tionofliquids.(d)Alternatively,haveinlinemonitoringcapabilitiestoper-formallorpartoftheaboveanalyses.

(2a)RadionuclideanalysisisperformedthroughanalysisofdilutedandundilutedgrabsamplesobtainedfromthePASS.Thecapabilityforcollectingandhandlingthesegrabsamplesaredescr'ibedintheresponsetoCriterion(1)above.ThesamplesareanalyzedusingGermanium-LithiumsemiconductoranalyzerslocatedintheRadiochemistrySampleRoom.TheseAnalyzersarecalibratedfortheradionuclidesXe133,I-131,-I-133,Cs-137,Cs-134,Kr-85andBa-140amongothers.Theanalyzerscanquantifyallradionuclidesrequiredforcoredamageassessment.Theeffctsofbackgroundradiationonsampleradiochemistryanalysisisreducedthroughtheuseofleadshieldingaroundthesamplechamber.Asabackup,shouldthebackgroundradiationlevelsintheReactorAuxiliaryBuildingexceedthecapabilitiesofthisshielding,thesamplescanbetransportedtotheradio-chemistrylaboratoryattheSt.LucieUnit1plant.St.LucieUnit1hasredundantanalysisequipmenttothatprovidedintheUnit1plant.Thetwoplantsareadjacentandtransportofthesampleswouldnotrequirethemtoberemovedfromthesite.ThemeansoftransportisthesameasthatdescribedinresponsetoCriterion(1).Provisionsareprovidedtoestimatetheextentofcoredamagebaseduponbothradionuclideconcentrationsandotherphysicalparameters.Theinterimprocedureforcoredamageassessment,usingonlyradionuclidedataisattached.,ThecomprehensiveprocedurebaseduponallavailableplantdataisinpreparationandwillbeprovidedbythescheduledinitialcriticalityoftheSt.LucieUnit2reactor.Thecomprehensiveprocedurewill.bebasedupontheparametersofreactorcoolantandcontainment

atmospherehydrogenconcentration,coreexitthermocoupletemperature,andcontainmentdoseratesinadditiontotheradionuclidedata..(2b)Therearetwoprovisionprovidedtoanalyzethecontainmentbuildingatmosphereforhydrogencontent.ThefirstistheContainmentHydrogenAnalyzerSubsystems.ThissubsystemisdescribedindetailinSection6.2.5.2.1oftheFSAR.Tworedundantsubsystemsareprovidedconsistingofthesampleandreturnpiping,associatedvalves,hydrogenanalyzer,grabsamplecylinder,samplepump,moistureseparator,cooler,instruments,calibrationgaslineandreagentgasline.Thesubsystemshavethecapabilitytoobtainsamplesfromsevenlocationswithinthecontainmentbuilding.ThesubsystemvalvesandpipingaredesignedandfabricatedinaccordancewithASMESection.III,Class2andN-stamped,theinstrumentationisClasslEinaccordancewiththeIEEEstandards.Thesubsystemisdesignedwithitsownbackupgrabsamplecapability.ThesecondprovisionisgrabsampleanalysisfromthePASS.ThePASSprovidesameanstoobtaindilutedsamplesofthecontainmentatmosphere.ThemeansforhandlingthesegrabsamplesisdescribedinresponsetoCriterion(1).ThegrabsamplesobtainedfromeithertheContainmentHydrogenAnalyzerSubsystemorthePASScanbeanalyzedbythetechniqueofgaspartitioningintheRadiochemistrySampleRoom.(2c)ThePASSprovidesthemeanstoperformon-linemeasurementofreactorcoolanttotaldissolvedgas,hydrogenandoxygenoffgas, dissolvedoxygenconcentration,pH,andboronconcentration.'hePASSisdescribedinSection9.3.6oftheFSAR.TheprovisionstoprovidechlorideanalysisisprovidedinresponsetoCriterion(5)below=.Therangeofchemicalanalysiscapabilityisasfollows:(1)Totaldissolvedgas(2)Hydrogenoffgas(3)Oxygenoffgas(4)Dissolvedoxygen(5)Boron(6)pH0to2000cc/kg0to1005ofT.D.G.0to25$ofT.D.G.0to20ppm0to5000ppm3to12(2d)AsstatedintheresponsetoCriterion2(c)thePASSemployson-lineinstrumentationforchemistryanalysis.Demonstrationoftheapplicabilityoftheselectedon-lineinstrumentationisshownthroughtesting.undertheanticipatedradiationenvironmentforpost-accidentuse.AdetaileddescriptionofthePASSinstrumentationandoftheapplicabilitytestprogramisprovidedinareportpreviouslyissuedtotheHRCChemicalEngineeringBranch.Thisreportisentitled"EngineeringEvaluationAndFunctionalTestingForTheC-EPASSComponentsAndInstrumentation",CEN-229(L)-PdatedNovember1982,preparedbyCombustionEngineering,Inc.ParticularattentionisprovidedinthesubjectreportconcerningapplicabilityofthePASSboronmetertoanalyzecontainmentbuildingsumpsamplesinthepresenceofpHcontroladditives.Specifictestingwasperformedtoverifythisperformance.AdetaileddescriptionofthattestprogramisprovidedasAppendixIIofthesubjectreport.

Criterion:~~(3)Reactorcoolantandcontainmentatmospheresamplingduringpostaccidentconditionsshallnotrequireanisolatedauxiliarysystem(e.g.,theletdownsystem,reactorwatercleanupsystem(RMCUS))tobeplacedinoperationinordertousethesamplingsystem.Response:ThePASScontainsallvalves,samplevessels,pumpsandheatexchangersnecessarytoprocess'eactorcoolantandcontain-mentatmospheresamplesduringpostaccidentconditions.ThePASSreturnsallsampleflowtocontainmenttoprecludeun-necessarycontaminationofauxiliarysystemsandtoensurethathighlevelwasteremainsisolatedwithinthecontainment.ThePASSdrawsreactorcoolantsamplesfromtheReactorCool-antSystem(RCS)hotlegwhenRCSpressureisbetween200psig,.and2485psig,orfromaLowPressureSafetyInjection(LPSI)pumpwhenRCSpressureislowerthan200psig.ThePASSdrawscontainmentsamplesviacontainmentatmospheresamplinglines.ThePASShascompletesampleprocessingcapabilitiesandhassamplelinesthatarenotsharedwithnororiginiatingfromanisolatedauxiliarysystem.PipingandInstrumentationdiagrams'orthePASSareprovidedinFigures9.3-6a,9.3-6b,and9.3-6coftheFSAR.Therefore,reactorcoolantandcontainmentatmos-pheresamplingdonotrequireanisolatedauxiliarysystembeplacedinoperationinordertosamplewiththePASS.Valveswhicharenotaccessibleafteranaccidentareenvironmentallyqualifiedfortheconditionsinwhichtheymustoperate.Criterion:(4)Pressurizedreactorcoolantsamplesarenotrequiredifthelicenseecanquantifytheamountofdissolvedgaseswithun-pressurizedreactorcoolantsamples.Themeasurementofeither II totaldissolvedgasesorH2gasinreactorcoolantsamplesisconsideredadequate.Measuringthe02concentrationisrecommended,butisnotmandatory.Response:ThePASSprovidesaremotecapabilitytoobtainapressurizedreactorcoolantsampleandquantifyboththeamountoftotaldissolvedgasinthecoolantandthehydrogenandoxygencompositionofthatgas.ThePASSalsoprovidesthecapabilitytoreasurethedissolvedoxygenconcentrationbelowsaturationintherangeof0to20ppm.Themethodusedtomeasureandanalyzethegasisasfollows.AsampleoftheReactorCoolantSystemisinitiatedbyopeningsystemisolationvalves(includingcontainmentisolation.valvesusingCIASoverride,ifnecessary)andpurgingareactorcoolantsample.throughthePASSsamplevessel/heatexchanger,whereitiscooled,throughathrottlevalvetoreducethepressure,throughthein-linechemistryanalysise'quipment,tothereactorcoolantdraintank.Atreactorcoolantpressureslessthan200psig,containmentsumpsampleflowispurged'nthesamemannerusingtheLPSIpumpdischargeconnection.Aftersufficientpurging,apressurizedsampleisthencollectedbyisolatingthesamplevessel/heatexchanger.Totaldissolvedgasconcentrationisdeterminedbydegassingthesample.Thisisaccomplishedbyde-pressurizationandcirculationbyalternateoperationoftheburetteisolationvalveandthesamplecirculationpump.Theresultingdisplacementofliquidintotheburetteisusedtocalculatethedissolvedgasconcentration.Thecollectedgases,whichhavebeentrippedfromtheliquid,arethendirectedthrough

afloatvalveformoistureseparationandcirculatedthroughhydrogenandoxygenanalyzers.TheH2analyzerisathermalconducitivitydevidethatdeterminesandindicatesthevolu~epercentofH2presentinthegasremovedfromtheliquidsample.The0analyzerisapara-magneticdevicethatdeterminesandindicatesthevolumepercentof02presentinthegastakenoutof,theliquidsample.Afterrecordingthehydrogenandoxygengasconcentrations,thegassamplevessel,whichcontainsnitrogen,isplacedonlinetodilutethegasvolume.Thisdilutionoperationreducestheradiationlevelssuchthatasamplecanbedrawnfromthegassamplevesselbyinjectionofasyringethroughaseptumplugmountedinthevessel.Thissamplecanbetransferredtothesitelaboratoryforsubsequentradioisotopeandbackupgasquantifi-cation.Priortosamplewithdrawal,additionaldilution,whichmay.benecessaryfor'hisquantification,maybeperformedbyfurthernitrogenaddition,circulationandveniing.ThegaseousmeasurementportionsofthesystemareflushedwithdemineralizedwaterandpurgedwithN2toreducepersonnelexposureduringwithdrawalofthesampleandtoreducecontaminationplateoutbetweensamples.Thedissolvedox'ygenconcentration,belowthesaturationlevelfordepressurizedreactorcoolant,ismeasuredusingaOrbispherepolarographicinstrument.Thisinstrumentoperatesintherangeof0to20ppm.Areactorcoolantsampleispurgedthroughthesystemforanalysis.Thesampleisdepressurized,cooled,andthetotalgasisevolveddowntosaturationlevelsfromthesampleduringdepressurization.Theevolvedgas,ifany,isseparatedandreturnedtothecontainmentbuilding.

'l Theprocessedreactorcoolantisthenpurgedthroughthein-linedissolvedoxygenanalyzerformeasurement.1Criterion:(5)Thetimeforachlorideanalysistobeperformedisdependentupontwofactors:(a)iftheplant'scoolantwaterisseawaterorbrackishwaterand(b)ifthereisonlyasinglebarrierbetweenprimarycontainmentsystemsandthecoolingwater.Underbothoftheaboveconditionsthelicenseeshallprovideforachlorideanalysiswithin24hoursof-thesamplebeingtaken.Forallothercases,thelicenseeshallprovidefortheanalysistobecompletedwithin4days.Thechlorideanalysisdoesnothavetobedoneonsite.Response:Afourstepprocessisusedintheanalysisofreactorcoolantforchlorides.Thesefourstepsare:(1)initialanalysisofadilutedgrabsampleforchlorideconcentration,(2)measurementofreactorcoolantdissolvedoxygenconcentrationintherangeof0to20ppmusingon-lineinstrumentation,(3)collectionofanundilutedgrabsampleintheshieldedGrabSampleFacilitywithretentionforanalysiswithin30daysconsistentwithALARA,and(4)verificationthatdissolvedoxygenislessthanorequalto0.1ppmbymeasurementofadissolvedhydrogenresidualofgreaterthanorequalto10cc/kg.TheinitialgrabsampleforchloridesisobtainedusingthePASSwithsampledilutionofafactorof1000.ThissampleistransportedtotheRadiochemistrySampleRoomforchlorideanalysisusingthemercuricnitratemanualtitrationtechnique.Thecapabilitytoperformchlorideanalysisofgrabsamplesusinglowchromotographyisplannedforthefuturebutwillnotbe-10-availableatthetimeofinitialreactorcriticality.ThedissolvedoxygenconcentrationismeasuredbythePASSusinganOrbispheredissolvedoxygenanalyzer.Themeasure-mentismadeon-linewithaninstrumentrangeof0to20ppmonanundiluteddepressurizedreactorcoolantsample.ThismeasurementisdescribedinresponsetoCriterion(4)above.Theundilutedgrabsampleiscollectedusingtheshieldedgrabsamplefacility.TheproceduresforoperatingandtransportingthisdevicearedescribedinresponsetoCriterion(1)above.TheundilutedsampleisstoredintheshieldedgrabsamplefacilityuntilthedoseratesfromthesamplehavedroppedsufficientlytoCallowanalysisconsistentwithALARA.Verificationoflowoxygenconcentrationipthereactorcoolantbymeasuringtheresidualhydrogenconcentrationisperformed,usingthePASSasdescribedinresponsetoCriterion(4):Criterion:(6)Thedesignbasisforplantequipmentforreactorcoolantandcontainmentatmospheresamplingandanalysismustassumethatitispossibletoobtainandanalyzeasamplewithoutradiationexposur'estoanyindividualexceedingthecriteriaofGDC19(AppendixA,10CFRPart50)(i.e.,5remwholebody,75remextremities).(Notethatthedesignandoperationalreviewcriterionwaschangedfromtheoperationallimitsof10CFRPart20(NUREG-0578)totheGDC19criterion(October30,1979letterfromH.R.Dentontoalllicensees)),Response:ThePASSperformsthechemistryanalysisforboron,pH,totaldissolvedgas,hydrogenandoxygenoffgas,anddissolvedoxygenusingremoteoperationofon-lineinstrumentation.Thetimerequiredtoperformtheseanalysesislessthanthreehours.

AsshowninFigure12.3A-2oftheFSARthedoserateinthePASSLaboratoryfollowingaplantaccidentconsistentwiththeRegulatoryGuide1.4sourcetermsislessthan15mr/hr.Therefore,itisanticipatedthatthepersonneldoseobtainedduringthesesampleproceduresislessthan45mrem.Theinitialscopinganalysisforreactorcoolantchlorideanalysisrequiresadilutedgrabsample.TheattachedFigure1providesthedoserat'escalculatedforasyringesampleobtained2hoursfollowinganaccidentconsistentwiththeRegulatoryGuide1.4sourcetermassumptions.Forchlorideanalysisthegrabsampledilutionistakenatafactorof1000.Thedoserateforthiscaseis450mrem/hrfrom.a2.5ccsampletotheextremitiesofanoperatorholdingthesyringe.Forchloridesalargersampleisrequired.Therequiredsampleis25cc.There-fore,theextremity.doseratefromthissampleis4.5R/hr.Thetimerequiredtohandlethesampleduringchlorideanalysisisamaximumof15minutes.Theresultingintegratedextremitydoseis1.125Rem.Thisiswellbelowthe10CFRPart50GDC19criteriaof75Remtotheextremities.TheshieldedGrabSampleFacilityisdesignedtocollectandretaina75ccundilutedsampleofthereactorcoolantliquid.ThedoseratescalculatedfortheGrabSampleFacilityassumingaRegulatoryGuide1.4sourcetermwithnocredittakenfordecayare76mrem/hratfourfeetfromtheGrabSampleFacilityand4.6Rem/hratthevalvehandwheelsandquickdisconnects.Thetime,requiredforanoperatortooperatethevalvesanddisconnectsisapproximately2minutes.Therefore,theoperatorextremitydoesduringcollectionofanundilutedsampleis150mrem.Thisiswellbelowthe10CFRPart50GDC19criteriaof75Remtotheextremitites.Aseparateshieldwallisprovidedtoreduce-12-

~~I,~FijjteILiquidSample,2.5ml-syringe10~I~!III-I~~~~~I~~~<.~I.I:I~:II~-.~~~~~~~I~~~~~~~~~~~~t\~~~~~~~~~<<~~~~,,~1~~II~10t--~:t--.-~i-WW-f-.I--9~~I~-~<~~~I~~I~-~I--I~~-I~I~~<~f~I1~~~~j~i~~~<t<~t~4~~IiI'i--f-.-j..f.IL~~~~~~~I'~~~iI~~~~~~~~I'~~~~~-fI~~~~~~~~tI'"t0-r'1<'<"~~"!-,I<~IIII~~I"tI~~7.I..~I~.~~I~"~--I~~,j~tt~~I~~-~tN:.:.:i:::'~.'..'..'..i~<~~=-:III:'e~I~~~~II~~~~I~~0.01~'~~~I~I~:i'j~jI~.g<~~I;.':..-;:-:}:IGI"T.-1.4l:-Relet2Itr;.'Ise[~Itl0.01t0i56I89)0.1t34567891.0t3456169=1250:1=2500:1.{c)F=5000:1.(d)F=10,000:1SpecificActivity(DegassedLiquid)(Ci/cc)

Attachment(1)to,S-CE-~Fiure2OffgassSample,2.5mlsyringee~Ll~I'II10~IIII'~~c"I6IIIClOlD~51.0C~~~~~~~.--~~-w~I~8~~~~-4~~~$20.10.01~4562690.1561891.0554567c(dF=22:1F=35:1F=60'1F=100:1SpecificActivity{Offgas)*(Ci/CC)*Noble/halogengasactivityperunitvolumetotal'gases

~~~P~Fiure3ContainmentAtmosphereSample,2.5mlsyringe)00~~II~~I100I~I;~I~~'I'II~~II~I1096II~'I~5II~~~~~~v<~ZIII~~~~i~J~~1~ev~~~e~~~d~>e~e='=10034"661691000~I456Z6910,00063i56)3100,0."'.(a)2oo:1(5)5oo:1(C)F=1200:1SpecificActivity(ContainmentAtmosphere)(qci/cc) wholebodyexposureduringsamplecollectionto15mrem/hr.Forbackupchemistryanalysisandforradiochemistryanalysisusingdilutedgrab.samplesthedoseratescalculatedareshown-inFi,gures1,2,and3attached.TheanticipatedvaluesoncontacttothesamplesyringestwohoursfollowinganaccidentyieldingRegulatoryGuide1.4sourcetermsareasfollows:360mrem/hrforadepressurizedreactorcoolantsample,600mrem/hr.forareactorcoolantgassample,and15mrem/hrforacontainmentatmospheresample.Thesevaluesareobtainedfromthefiguresusingtheanticipateddilutionfactors.Ineachcasethesamplecontactdoseratesaresufficientlylowtoensurethatthe10CFR50GDC19dosecriteriawillbemaintained,AsshowninFigure12.3A-7twoalternateroutesforaccesstothePASSLaboratoryareavailable.Themaximumdosereceivedusingthepreferredrouteisapproximately1mrem.Themaximumdosereceivedusingthealternaterouteis750mrem.Ineachcasetransittimethroughtheradiationzonesareapproximately30seconds.Criterion:(7)TheanalysisofprimarycoolantsamplesforboronisrequiredforPWRs.(NotethatRev.2ofRegulatoryGuide1.97specifiestheneedforprimarycoolantboronanalysiscapabilityatBHRplants).Response:ThePASSprovidesthecapabilitytoperforminlineboronanalysis,inadditionthePASSprovidesthecapabilityofobtainingdilutedandundilutedgrabsamplesforbackupboron,analysis.-13-Adetaileddescriptionoftheon-lineboronanalyzerisprovidedinareportpreviouslytransmittedtotheNRC,CEB.ThisreportisCEN-229(L)-P,"EngineeringEvaluationAndFunctionalTestingForTheC-EPASSComponentsAndInstrumentation"datedNovember1982.ThisreportalsodescribestestingdonetodemonstrateperformanceoftheboronmeterinaradiationenvironmentandtodemonstrateaccuracyinanalysisofbothreactorcoolantandcontainmentsumpwaterwithpHcontroladditives.Criterion:(8)Ifinlinemonitoringisusedforanysamplingandanalyticalcapabilityspecifiedherein,.thelicenseeshallprovideback-upsamplingthroughgrabsamples,andshalldemonstratethecapabilityofanalyzingthesamples.Establishedplanningforanalysisatoffsitefacilitiesisacceptable.Equipmentprovidedforbackupsamplingshallbecapableofprovidingatleastonesampleperdayfor7daysfollowingonsetoftheaccident,andatleastonesampleperweekuntiltheaccidentconditionnolongerexists.Response:ThecapabilitiesofthePASSsystemtoprovidebackupsamplingthroughgrabsampleswasdiscussedinconjunctionwithgrabsamplingcapabilitiesintheresponsetoCriterion1.ThePASSprovidesadepressurizedgrabsamplefacilitywithleadshieldingforundilutedsamplesandmultipledilutioncapabilityfordilutedsamplescollectedviasyringe.ThePASSprovidesthefollowingbackupgrabsamplecapability:1)undilutedreactorcoolant,2)dilutedreactorcoolant,3)dilutedreactorcoolantoffgasand4)dilutedcontainmentatmospheregas.

TheundilutedreactorcoolantsampleisobtainedviatheGrabSampling.Facility(seeresponsetoCriterion1fordescription).Thedilutedsamplesareobtainedthroughseptumplugslocatedbehindasmallpenetrationintheshieldwallus-ingasyringeforsamplewithdrawal.Allgassamplesaredilutedbeforewithdrawalforthepurposeofradiationprotection.Althoughitispossibletoobtainundilutedgassamples,radiationprotectionisensuredbyproceduresandmechanicalarrangementswhichdeliberately'iscriminateagainstpossiblea'ccidentalexposuretoundilutedradioactivegas.Theequipmentprovidedforbackupsamplingiscapableofprovidingatleastonesampleper,dayforanunlimitedperiodfollowinganaccident.Grabsamplesareprovidedasbackuptothein-lineanalyzersusedbythePASSformeasurementofhydrogengas,oxygengas,pHandboron.TheanalysisofhydrogenandoxygengasgrabsamplesisperformedusingaFoxboroGasPartitionerlocatedintheRadiochemistrySampleRoom.ThegaspartitionerisequipedwithasupplysystemdesignedtoacceptthesampledirectlyfromthesyringeusedtoremovethesamplefromthePASS.TheanalysisofboronisperformedusingmanualMannitolTitrationona0.15mlsample.ThecapabilitytoperformboronanalysisusingIOI'lchromatographyisplannedinthefuture.TheanalysisforpHwillbeperformedwithundilutedsamplesatsuchtimefollowingtheaccidentthatisconsistentwithALARA.Criterion'.(9)Thelicensee'sradiologicalandchemicalsampleanalysiscapabilityshallincludeprovisionsto:-15-(a)Identifyandquantifytheisotopesofthenuclidecatego.iesdiscussedabovetolevelscorrespondingtothesourcetermsgiveninRegulatoryGuide1.3or1.4and1.7.'herenecessaryandpracticable,theabilitytodilutesamplestoprovidecapabilityformeasurementandreductionofpersonnelexposureshouldbeprovided.Sensitivityofonsiteliquidsampleanalysiscapabilityshouldbesuchastopermitmeasurementofnuclideconcentrationintherangefromapproximatelylx10Ci/gto10Ci/g.(b)Restrictbackgroundlevelsofradiationintheradiologicalandchemicalanalysisfacilityfromsourcessuchthatthesampleanalysiswillprovideresultswithacceptablysmallerror(approximatelyafactorof2).Thiscanbeaccomplishedthroughtheuseofsufficientshieldingaroundsamplesandoutsidesources,andbytheuseofventilationsystemdesignwhichwillcontrolthepresenceofairborneradioactivity.Response:(ga)ThePASSprovidesthecapabilitytoobtaindilutesamplesforthepurposeofidentifyingandquantifyingtheisotopespresentinthereactorcoolantandcontainmentbuildingatmospheresamples.TheresponsestoCriterion1,6,and8describesthePASSprovisionsforhandlinggrabsamples.ThePASSprovidesthecapabilitytoobtainthefollowinggrabsamples:(1)undiluted,depressurized,cooledreactorcoolantliquid,(2)diluteddepressurizedcooledreactorcoolantliquid,(3)diluted,depressurizedcooledoffgasfromthereactorcoolant,and(4)dilutedcontainmentbuildingatmosphere.Thelocationsfromwhichthesesamplesamybeobtainedincludethereactor-16-coolantsystemhotleg,thecontainmentbuildingsump,andthecontainmentbuildingatmosphere.IneachcasethePASSprovidesthemeanstocontinuouslyvarythegrabsampledilutionfactortosuittheneedsoftheanalysis.(gbThegrabsampleswillbeanalyzedintheRadiochemistrySampleRoomusingsemiconductordetectorswithmultichannelanalyzers.PredictedspecificactivityofthesamplesarebaseduponRegulatoryGuide1.4and1.7assumptions.TheFigures1through3providedinresponsetoCriterion6indicatethepredictedgrossspecificactivityandcorrespondingdoseratesforgrabsampleanalysis.Thesemiconductordetectorswillbecalibratedtopermitmeasurementofnuclideconcentrationintherangeoflxl0Ci/gto10Ci/g.)Theeffectsofbackgroundradiationonsampleradiochemistryanalysisisreducedthroughtheuseofleadshieldingaroundthesamplechamber.Abackgroundcountratewillberecordedpriortosampleanalysis.Asabackup,shouldthebackgroundradiationlevelsintheReactorAuxiliaryBuildingexceedthecapabilitiesoftheshielding,thesamplescanbetransportedtotheradio-chemistrylaboratoryattheSt.LucieUnit1plant.St.LucieUnit1hasredundantanalysisequipmenttothatprovidedintheUnit2plant.Thetwoplantsareadjacentandtransportofthesampleswouldnotrequirethemtoberemovedfromthesite.Themeansof-transportisthesameasthatdescribedinresponsetoCriterion(1).Criterion:(10)Accuracy,range,andsensitivityshallbeadequatetoprovidepertinentdatatotheoperatorinorderto'describeradiolo-gicalandchemicalstatusofthereactorcoolantsystems.-17-Response:Instrumentationaccuraciesandrangesrequirementsfortheboron,hydrogen,oxygenandpHmetersareprovidedinSystemdescrip-tionsectionofthePASStechnicalmanual.Theaccuracyandrangeoftheboronmeteris+21and0-5000ppmboron,respecti-vely.Theaccuracyandrangesofthehydrogenmeterare+2K-..and0-10ÃbyvolumeH2and0-100ÃbyvolumeH2,respectively.Theaccuracyandrangesoftheoxygenmeterare+2<and0-5%byvolume0and0-24Kbyvolume02.TheaccuracyandrangeofthepHmeterare+.3pHunitsand3-12pHunits.Thesevaluesarestatedundernormalenvironmentalconditions.Demonstrationoftheapplicabilityandaccuracyoftheselectedon-lineinstrumentationunderpostaccidentenvironmentalconditionsisshownthroughtestingundertheanticipatedradiationenvironmentconsistentwithRegulatoryGuide1.4sourceterms.TheresultsofthistestingaredescribedinarportpreviouslyprovidedtotheNRC.ThisreportisCEN-229(L)-P"EngineeringEvaluationAndFunctionalTestingForTheC-EPASSComponentsAndInstrumentation"datedtlovember1982.ThisreportwaspreparedbyCombustionEngineering,Inc.WithregardtopersonneltrainingandfamiliaritywiththePASSequipmentandprocedures,allFPRLChemistryDepartmenttechnicianswillbetrainedbothintheclassroomandinactualhands-onoperations,asafunctionoftheChemistryDepartmenttrainingprogram.OperatingprocedureswillbedevelopedandtheywillbeconsistentwiththerecommendationsofthePASSsupplier(CombustionEngineering).-18-CombustionEngineeringissupplyingvideotapedrefreshertrainingprograms-tocover"bothPASSCalibrationandMaintenance,andOperationsandPostAccidentChemistry'.Criterion:(ll)Inthedesignofthepostaccidentsamplingandanalysiscapability,considerationshouldbegiventothefollowingitems:(a)Provisionsforpurgingsamplelines,forreducingplateoutinsamplelines,forminimizingsamplelossordistortion,forpreventingblockageofsamplelinesbyloosematerialintheRCSorcontainment,forappropriatedisposalofthesamples,andforflowrestrictionstolimitreactorcoolantlossfromaruptureofthesampleline.Thepostaccidentreactorcoolantandcontainmentatmospheresamplesshouldberepresentativeofthereactorcoolantinthecoreareaandthecontainmentatmospherefollowingatransientoraccident.Thesamplelinesshouldbeasshortaspossibletominimizethevolumeoffluidtobetakenfromcontainment.Theresiduesofsamplecollectionshouldbereturnedtocontainmentortoaclosedsystem.(b)Theventilationexhaustfromthesamplingstationshouldbefilteredwithcharcoalabsorbersandhigh-efficiencyparticulateair(HEPA)filters.Response:(lla)ThedesignofthePASSincludesmanyfeatureswhichservetomaintainsampleintegrityandlimitradiologicalex-posureorrelease.Manyofthesefeatureswereexplainedinresponsetoearlierquestions,namelydilutioncapabilities,operabilityindependencewithrespecttoisolatedauxiliary.systems,sampledisposalviareturningsampletocontainment-19-

~'FI therebyprecludingunnecessarycontaminationofexternalenvironmentsandremotecalibrationsamplingandpurgingcapabilities.ThePASSprovidesadditionalfeatureswhichservetomaintainsampleintegrityandlimitradiologicalexposureorrelease.Pipinglengthsarekeptasshortaspossiblethuslimitingplatoutinsamplelines.Pipediameterdownstreamofexis'tingsamplepathsis1/2"to3/8"thusprovidinghighvelocityturbulentsampleandpurgeflowatachievableflowrates.SampleandpurgeflowvelocityandReynoldsnumberforthereactorcooloutsampleattherecommendedflowrateof1gpmareoftheorderof1.5ft/secand10,respectively.Samplepurgeandsamplevelocityforthecontain-mentatmosphere'sampleatrecommendedflowratesare7.5to10ft/secand1.5ft/sec,respectively.Astrainerupstreamofthesamplevesselheatexchangeerisdesignedtoremoveinsolubleparticleswhichmaycausesamplestationchemistryinstrumentationtobecomeplug-'et.Thestrainercanbebackflushed,withdemineralizedwaterremotelybyoperationofvalvesatthecontrolpanel.(lib)ThePASScabinetisequippedwithlouverssizedtopassupto333scfmofairflowfromthesurroundingroomtotheventilationsystemexhauseconnectionintheupperportionoftheenclosure.Airflowisroutedthroughcharcoalabsorbers.Thisairflowprecludesanybuildupofradioactivegasorhydrogengasandprovidesforremovalofheatgeneratedbyinternalcomponents.-20-