ML18040A826

Proposed Tech Specs,Allowing Alternate Method of post-accident Drywell Gaseous Sampling & Providing Relief for Unnecessarily Restrictive Action Statement on Drywell Oxygen Analyzer

ML18040A826
Person / Time
Site:	Susquehanna
Issue date:	02/09/1987
From:	PENNSYLVANIA POWER & LIGHT CO.
To:
Shared Package
ML17146A708	List: ML17146A707 ML18040A825 ML18040A826
References
NUDOCS 8702180499
Download: ML18040A826 (20)

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':0'alXl!t'RO!IQ%Nt$0'a>vAQ)~xc~IllQIQI4OOOlu'"QOO,y,'au<;XIc=INSTRUMENT~REQUIREDNUMBER*OFCHANNELSMINIMUMCHANNELSOPERABLETABLE3.3.7.5-1ACCIDENTMONITORINGINSTRUMENTATIONACTIONAPPLICABLEOPERATIONALCONDITIONl.ReactorVesselSteamDompPressure2.ReactorVesselMaterLevel3.SuppressionChamberMaterLevel4.SuppressionChamberMaterTemperature5.SuppressionChamberAirTemperature6.PrimaryContainmentPressure7.Drywe)1Temperature8.OrwellGaseousAnalyzera.Oxygenb.Hydrogen9.Safety/ReliefValvePositionIndicators10.ContainmentHighRadiationll.Noblegasmonitors"*a.ReactorBldg.Ventb.SGTSVentc.TurbineBldg.Vent12.NeutronFlux2228,6locations22/range2241/valve"21116,1/location11/range11/valve*180l808080808080'ba,e2-8280818181'18012l1,21,21,2.1,21,21,21P,2IIM',2II1,21,21,2and*""1,2and"*"121,2,OC)~Acousticmonitor.**Mid-rangeandhigh-rangechannels"*"Whenmovingirradiatedfuelinthesecondarycontainment.IISeeSpecialTestException3.10.174/OPCjll~n~6fgcrn~gpAocfog~oniyoria'Absuu%w~~OgeCtmf(CnQvf~igCohS~Ig~nc(foA'egfAis~/K(I~~,

TABLE4.3.7.5-1ACCIDENTHONITORINGINSTRllMEHTATIONSURVEILLANCEREUIREHEATSCHANNELCHECKCHANNELCALIBRATIOHINSTRUMENTl.ReactorVesselSteamDomePressure"2.ReactorVesselWaterLevel3.SuppressionChamberMaterLevel4.SuppressionChamberMaterTemperature'.SuppressionChamberAirTemperature6.PrimaryContainmentPressure7.DrywellTemperature8.DrywellOxygen/HydrogenAnalyzer~9.Safety/ReliefValvePositionIndicators10.ContainmentHighRadiationll.Noblegasmonitorsa.ReactorBldg.Ventb.SGTSVentRRRRRRRQ*RRHHHHMHHHHHHRc.TurbineBldg.VentHR12.NeutronFluxMR(~ecoythepeepleee/+<ee~eel~)orhydrogenanayzer~usesamplegascontaining:a.Nominalzerovolume'percenthydrogen,balancenitrogen.b.Nominalthirtyvolumepercenthydrogen,balancenitrogen.*"CHANNELCALIBRATIONshallconsistofanelectroniccalibrationofthechannel,notincludingthedetector,forrangedecadesabove10R/hrandaonepointcalibrationcheckofthedetectorbelow10R/hrwithan.installedorportab'legammasource.eWg$ykc]prylan/p~a(per/pnfgnerfgskingccfi(i+Mz~n4Pftep're@6'@+t~~nQ~jrrr~CM<dCCqCrg&rro&ggrp(/deyCrfir~egP+h.lire'+4reg~rr-J TABLE3.3.7.5-1ACCIDENTHOHITORINGIHSTRUHENTATIONINSTRUHENT1.ReactorVesselSteamDomePressure2.ReactorVesselWaterLevel3.4.5.6.7.8.SuppressionChamberMaterLevelSuppressionChamberMaterTemperatureSuppressionChamberAirTemperaturePrimaryContainmentPressureDrywellTemperatureOrwellGaseousAnalyzera.Oxygenb.Hydrogen9.Safety/ReliefValvePositionIndicators10.ContainmentHighRadiationll.Noblegasmonitors*"a.ReactorBldg.Ventb.SGTSVentc.TurbineBldg.Vent12.PrimaryContainmentIsolationValvePosition13.NeutronFluxREQUIREDNUHBEROFCHANNELS8,6locations22/range22cS:A1/valve"11/valveMINIHlJHCHANNELSOPERABLE6,1/location11/range11/valve"1/valveACTION80808080808080W828280818181818080APPLICABLEOPERATIONALCONDITIONS1,21,21,21,21,21,21,21,¹2¹1,¹2¹1,21,21,2and"""2and%**1,2and"""1,21,2"Acousticmonitor.""Hid-rangeandhigh-rangechannels.***Whenmovingirradiatedfuelinthesecondarycontainment.¹SeeSpecialTestException3.10.1.j7~(~~cZ(/CDnok.Ag~ofIhOaefOI'i~'4tS~~~~C~CeI~P4~>IS~ScancgVn/*~<~~,regCcir~M.

CACACtllTABLE4.3.7.5-1ACCIOENTHONITORINGINSTRUHENTATIONSURVEILLANCEREUIREHENTSIRSTRUHEHTCHANNELCHECKCHANNELCALIBRATIONGPaCCa)2.3.4.5.6.7.8.9.10.12.13.ReactorVesselSteaiOomePressureReactorVesselMaterLevelSuppressionChamberMaterLevelSuppressionChamberMaterTeimperatureSuppressionChamberAirTemperaturePrimaryContainmentPressureOrywellTemperatureOrywellOxygen/HydrogenAnalyzer~.Safety/ReliefValvePositionIndicatorsContainmentHighRadiationNoblegasmonitorsa..ReactorBldg.Ventb.SGTSVentc.TurbineBldg.VentPrimaryContainmentIsolationValvePositionNeutronFluxRRRRRRRqARR**RRRNAR(lsg,fgytfgc,)ref(cHlh+4ERl~A+wA~ocif*ForhydrogenanalyzerPusesamplegascontaining:ta.Nominalzerovolumepercenthydrogen,balancenitrogen.b.Nominalthirtyvolumepercenthydrogen,balancenitrogen.*"CHANNELCALIBRATIONshallconsistofanelectroniccalibrationofthechannel,notincludingthedetector,forrangedecadesabove1OR/hrandaonepointcalibrationcheckofthedetectorbelow1OR/hr>>thaninstalledorportablegammasource.~~~/<<,g~(qcye~c.~sskc<~ST'Rl<Ww~pn~r~Ch4~nfdc.avEcK~A,~~p<i~4yccag87roJ>A~/Ike1erfor~golt/Te/isles'l'eg~~Ees.

~Ct)CCAADmTABLE3.3.7.5-1ACCIDENTHONITORINGINSTRUMENTATIONINSTRUHENT~REQUIREDNUMBEROFCHANNELSHINIHUMCHANNELSOPERABLEACTIONAPPLICABLEOPERATIONAL~CONDITION2.3.4.6.7.8.9.10.11.ReactorVesselSteamDomoPressureReactorVesselMaterLevelSuppressionChamberMaterLevelSuppressionChamberMaterTemperatureSuppressionChamberAirTemperaturePrimaryContainmentPressureDrywellTemperatureDrywellGaseousAnalyzera.Oxygenb.HydrogenSafety/ReliefValvePositionIndicatorsContainmentHighRadiationNoblegasmonitors""a.ReactorBldg.Ventb.SGTSVentc.TurbineBldg.Vent228,6locations22/range22882k'/valve"16,1/location11/range11I'III1H1/valve"180l808080808080828280818181'11,2)lq21,212.1,21,21,2lP,2h'8,2II'.2121,2and*"*1,2and"**1212.NeutronFlux8012OCD"Acousticmonitor."*Hid-rangeandhigh-rangechannels""*Mhenmovingirradiatedfuelinthesecondarycontainment.DSeeSpecialTestException3.10.1HThepreplannedalternatemethodofmonitoringthisparameter,once"channel"tomeetthisrequirement.implemented,isconsideredavalid TABLE4.3.7.5-lACCIDENTMONITORINGINSTRUMENTATIONSURVEILLANCEREUIREMEATSINSTRUMENT1.ReactorVesselSteamDomePressure'.ReactorVesselMaterLevel3.SuppressionChamberMaterLevel4.SuppressionChamberMaterTemperature5.SuppressionChamberAirTemperature6.PrimaryContainmentPressure7.DrywellTemperature8.DrywellOxygen/HydrogenAnalyzers9.Safety/ReliefValvePositionIndicators10.ContainmentHighRadiation11.Noblegasmonitorsa.ReactorBldg.Ventb.SGTSVentCHANNELCHECKCHANHELCALIBRATIONRRRRRRR*RRA%OMMc.TurbineBldg.Vent12.NeutronFlux!orhydrogenanayzer~(butnotthepreplannedalternatemethod),usesample'ascontaining':a.Hominalzerovolume'percenthydrogen,balancenitrogen.b.Nominalthirtyvolumepercenthydrogen,balancenitrogen."*CHANNELCALIBRATIONshallconsistofanelectroniccalibrationofthechannel,notincludingthedetector,forrangedecadesabove10R/hrandaonepointcalibrationcheckofthedetectorbelow10R/hrwithaninstalledorportablegammasource.8Ifthepreplannedalternatemethodisbeingutilized,anappropriateCHANNELCHECKandanappropriateCHANNELCALIBRATIONshallbeperformedatthelistedfrequencies.

TABLE3.3.7.5-1ACCIDENTHONITORINGINSTRUHENTATIONCMtOINSTRUHENT1.ReactorVesselSteamDomePressure2.ReactorVesselMaterLevel3.SuppressionChamberMaterLevel4.SuppressionChamberWaterTemperature5.SuppressionChamberAirTemperature6.PrimaryContainment'Pressure7.DrywellTemperature8.DrywellGaseousAnalyzer~a.Oxygenb.Hydrogen9.Safety/ReliefValvePositionIndicators10.ContainmentHighRadiation11.Noblegasmonitors"*a.ReactorBldg.-Ventb.SGTSVentc.TurbineBldg.Vent12.PrimaryContainmentIsolationValvePosition13.NeutronFluxREQUIREDNUHBEROFCHANNELS8,6locations22/range22yy2kTI'1/va1ve"211/valveHINIHUMCHANNELSOPERABLE6,1/location11/range11H1/valve*11/valve1ACTION80808080808080828280818181818080APPLICABLEOPERATIONALCONDITIONS1,21,21,21,21,21,21,2l,f281,8281,21,212and*"*and*A'42and1,21,2*Acousticmonitor."*Hid-rangeandhigh-rangechannels."*"Whenmovingirradiatedfuelinthesecondarycontainment.gSeeSpecialTestException3.10.1.HThepreplannedalternatemethodofmonitoringthisparameter,onceimplemented,isconsideredavalid"channel"tomeetthisrequirement..~I

TABLE4.3.7.5-1ACCIDENTMONITORINGINSTRUMENTATIONSURVEILLANCEREUIREHENTSINSTRUMENT1.ReactorVesselSteamDomePressure2.ReactorVesselMaterLevel3.SuppressionChamberMaterLevel4.SuppressionChamberMaterTemperature-5.SuppressionChamberAirTemperature6.PrimaryContainmentPressurel.DrywellTemperature8.DrywellOxygen/HydrogenAnalyzerg9.-Safety/ReliefValvePositionIndicators10.ContainmentHighRadiation11.Noblegasmonitorsa.ReactorBldg.Ventb.SGTSVentc.TurbineBldg.Vent'12.PrimaryContainmentIsolationValvePosition13.HeutronFluxCHANNELCHECKHHHHHMHHHMHHHCHANNELCALIBRATION"'RRRRRRRQA'R*A'RNAR"Forhydrogenanalyzer,(butnotthepreplannedalternatemethod),usesamplegascontaini'na;Ia.Hominalzerovolumepercenthydrogen,balancenitrogen.-b.Nominalthirtyvolumepercenthydrogen,balancenitrogen.""CHANNELCALIBRATIONshallconsistofanelectroniccalibrationofthechannel,notincludingthedetector,forrangedecadesabove10R/hrandaonepointcalibrationcheckofthedetectorbelow10R/hrwithaninstalledorportablegammasource.glfthepreplannedalternatemethodisbeingutilize'd,anappropriateCHANNElCHECKandanappropriateCHANNELCALIBRATIONshallbeperformedatthelistedfreauencies.

SSES-FSARrecombinersarelocatedapproximatelymidwaybetweenthepedestalandcontainmentwall.Thesuppressionchamberrecombinersbothhavestructureslocatedclosetotwo.oftherecombinerports.Bothrecombinershavea42inchdiameterdiaphragmslabsupportcolumnapproximately1-1/2feetfromthesuction,anda24inchbeamapproximately6inchesfromthe26inchhighdischarge.Thehydrogenrecombinerisanaturalconvection,flameless,thermalreactor-typehydrogen/oxygenrecombiner.Theinitiationtimefortherecombinersispriorto1.2days,post-LOCAasshowninFigures6.2-49,6.2-50and6.2-51.Theheat-uptimeisapproximately4hours.Therefore,recombinerheat-upwillbeginapproximately4hourspriortooperation.Therecombinerheatsacontinuousstreamofcontainmentatmospheretoatemperaturesufficientforrecombinationofthehydrogenandoxygen,toformwater.Therecombinationunitconsistsofaninletpreheatersection,aheater-recombinationsection,andamixingchamber.Theairisdrawnintotheunitbynaturalconvectionviatheinletlouversandpassesthroughthepreheatersection,which'consistsofashroudplacedaround,thecentralheaterstotakeadvantageofheatconductionthroughthewalls.Inthisareathetemperatureoftheinletairisraised.Thisaccomplishesthedualfunctionofincreasingthesystemefficiencyandofevaporatinganymoisturedropletswhichmaybeentrainedintheair.Thewarmedairthenpassesthroughthefloworificewhichhasbeenspecificallysizedtoregulatetheairflowthroughtheunit.Afterpassingthroughtheorificeplate,theairflowsverticallyupwardthroughtheheatersection,whereitstemperatureisraisedtotherangeof1150-1400F,causingrecombinationofH2and02tooccur.Therecombinationtemperatureisapproximately1135~8.Theheatersectionconsistsoffivebanksofelectricheatersstackedvertically.Eachbankcontains60individualU-typeheatingelements.Next,theairrisesfromthetopoftheheatersectionandflowsintothemixingchamber,whichisatthetopoftheunit.Here,thehotairismixedwiththecoolercontainmentairtodischargeitbackintothecontainmentatalowertemperature.Thecoolercontainmentairentersthemixingchamberthroughthelowerpartoftheupperlouverslocatedonthreesidesoftheunit."Table6.2-18givesthedesigncharacteristicsofthehydrogeniecombiner.Rev.36,07/856.2-71 EO"200-103Reiision0Page17of33PC/P-4IF:THEN:0H2CONCENTRATION>3%BYVOLUMEOR24HOURSHASELAPSEDSINCE1.72PSIGSIGNAL,STARTH2RECOMBINERSIAWOP-273"001RUNDWCOOLERSINSLOWIAWES-234-001Thisstepbecomeseffectivewhenreadandremainseffectiveuntilflowchartexited.Ignitionofcombustiblegases(hydrogenandoxygen)couldresultinsignificantcontainmentpressuretransients,leadingtocontainmentfailure.ThisWillnotoccurifcontainmenthydrogenconcentrationismaintainedbelow4%.Therefore,starthydrogenrecombinersat3%concentration.Rundrywellcoolersinslowtoavoidpocketswithhighhydrogenconcentrations.Startbothsystemsalsoafter24hourshaselapsedfromreceiptofLOCAsignaltocounteractbuildupofcombustiblegasduetoradiolysis.Securehydrogenrecombinerspriortoinitiatingcontainmentsprays.pc/p-5(PC/P-1)REDUCEPCPRESSUREUSING:oSBGTIAWON-234-001,ONLYWHENDWANDSUPPCHAMBERTEMP<212FoRPVDEPRESSURIZATIONANDCOOLDOWNIAWRPVCONTROLoES"234-001,BYPASSINGDRYWELLCOOLING'OGICISOLATIONSReducecontainmentpressureusinglistedprocedures.Theseproceduresaccountfor1.72psigisolations.InitiateRPVdepressurizationandcooldown'inaccordancewithE0-200-102,RPVControl,performedconcurrentlywiththisprocedure.UseSBGTonlyifprimarycontainmenttemperaturesarebelow212~F:Iftemperatureisabove212F,steammaybeadmittedtocontainment.ContinueduseofSBGTwouldeventuallyreducecontainment'snon-condensibleairmassandpreventusingdrywellsprays.pc/p-eBEFOREDWORSUPPCHAMBERPRESSUREREACHES0PSIG,-TERMINATEPRESSUREREDUCTIONThisstepbecomeseffectivewhenreadandremainseffectiveuntilflowchartexited.Itgivesappropriatetimetostoppressurereduction,whatevermeansemployed(i.e.SBGTorsprays).Stoppressurereductionatthispointtopreventcontainmentfailureonnegativepressure.

0 RRCLIMITSEXPERIMENTPETONABLFLAMMABLEAIRNON-FLAMMABLE$%O~20Figure1.COMBUSTIONCHARACTERISTICSOFH>INAIRANDSTEAM Q~~CCOMBUSTIBLE40NONFLAMMABLE.00230AIRRAOIOLYSISMETAL-WATERRECOMBINATIONINERTFigure2MITIGATIONOFDEGRADEDCOREENVIRONMENTBYRECOMBINATION 4TOTALRADIOLYSIa1504W44'1004,ILR84.XSO~yye~Priul~eed(Ih-<<le)METALWATERREACTIONPlUSINITIALHYDROGEN1020TIMEAFTERLOCAIDAYSIRev.350784SUSCNEHANNASTEANELECTRICSTATIONUNITS1AND2FINALSAFETYANALYSNREPORTINTEGRATEDPRODUCTIONOFHYDROGENVS.TIMEAFTERLOCAFIGURE6.2-4.8 I

8C1NCCIICIV~JAXOpN3008OAHLNBQBBdBWllOARev.3507/84~SUSQUEHANNASTEAMELECTRICSTATIONUNITS1AND2FINALSAFETYANALYSISREPORTHYDROGENCONCENTRATIONINTHE.DRYNELLVS.TIMEAFTERLOCA(SHORTTERM)BOURS"6'2-50 I1?F1~ATTACQIENT6ICOIIThISKHTHYOROGENMONITORIAcontinuous.'fndicationofhydrogenconcentrationinthecontainmentatjaosphcrcshallbeprovidedinthecontrolrooa.Hcasurcacntcapabilityshallbcprovidedovertherangeof0to10Khydrogenconcentrationunderbothpositiveandnegativeaablentpressure.ChastoPrevfousRufreaentsandGuidanceRegulatoryGufde1.9>,Rev.2wasreferencedintheOctober30,1979letterastheguideforthedesignandqualificationcrfterfaforthecontafnecnthydrogenmonitor.However,therehavebeenaanychangesaadetothisproposedrevisionandfthasnotyetbeensadeffw.'..Therefore,theappropriatesectionsofttwlatestversionofRegulatoryGuide1.97havebeenaddedtothisletter(AppendixA)and,therefore,thisfstobeconsideredancwrcqufreeent.Thef~ltaentatfondatehasbeenchangedduetocqufpoentprocurcacntprobleas.Thenewfepleaentationscheduleisintendedtoallowlicenseesenoughtiaetocoepletedesignmodificationswithaafnfauanueberofplantshutdowns.Clarification(1).DesignandqualifIcitfoncrfterfaareoutlinedfnAppendixA.'2)Ttwcontinuousfr.)icationofhydrogenconcentrationIsnotrequiredduringnoraaloperation.lfanfndfcatfonfsnotavailableatalltfees,continuousindicatfonandrecordingshallbefunctioningwithin30afnutesoftheinitiationofsafetyinfection.(3)Ttwaccuracyandplaceeentofthehydrogeneonftorsshallbeprovidedand)ustifiedtobeadequatefortheirintendedfunctfon.Tt::wqufrccwntappliestoaltoperatfngreactorsandallapplicantsforoperatinglicenses.IlceentatfonForoperatingreactors,desfgnaodfffcatfonsshouldbecoapletedbyJanuary1,1982.OperatinglicenseapplicantswithanoperatinglicensedatebeforeJanuary1,1982esthavedesignchangescoapletedbyJanuary1,1982,whereasthoseapplicantswithlicensedatespastJanuary1,1982austhavealldesignoodfff-catfonscoapletcdbeforetheycanrccefvetheiroperatinglicense.3-111 1Ittla*~