ML18040A826

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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  Talen Energy icon.png
Issue date: 02/09/1987
From:
PENNSYLVANIA POWER & LIGHT CO.
To:
Shared Package
ML17146A708 List:
References
NUDOCS 8702180499
Download: ML18040A826 (20)
v • d • e


Text

':0'alXl!t'RO!IQ%Nt$0'a>vAQ)~xc~IllQIQI4OOOlu'"QOO,y,'au<;XIc=INSTRUMENT

~REQUIREDNUMBER*OFCHANNELSMINIMUMCHANNELSOPERABLETABLE3.3.7.5-1 ACCIDENTMONITORINGINSTRUMENTATION ACTIONAPPLICABLE OPERATIONAL CONDITION l.ReactorVesselSteamDompPressure2.ReactorVesselMaterLevel3.Suppression ChamberMaterLevel4.Suppression ChamberMaterTemperature 5.Suppression ChamberAirTemperature 6.PrimaryContainment Pressure7.Drywe)1Temperature 8.OrwellGaseousAnalyzera.Oxygenb.Hydrogen9.Safety/Relief ValvePositionIndicators 10.Containment HighRadiation ll.Noblegasmonitors"*

a.ReactorBldg.Ventb.SGTSVentc.TurbineBldg.Vent12.NeutronFlux2228,6locations 22/range2241/valve"21116,1/location 11/range11/valve*180l808080808080'ba,e2-8280818181'18012l1,21,21,2.1,21,21,21P,2IIM',2II1,21,21,2and*""1,2and"*"121,2,OC)~Acoustic monitor.**Mid-range andhigh-range channels"*"Whenmovingirradiated fuelinthesecondary containment.

IISeeSpecialTestException 3.10.174/OPCjll~n~

6fgcrn~gpAocfog~oniyoria'Absuu%w~~OgeCtmf(CnQvf~igCohS~Ig~nc(foA'egfAis~/K(I~~,

TABLE4.3.7.5-1 ACCIDENTHONITORING INSTRllMEHTATION SURVEILLANCE REUIREHEATS CHANNELCHECKCHANNELCALIBRATIOH INSTRUMENT l.ReactorVesselSteamDomePressure"2.ReactorVesselWaterLevel3.Suppression ChamberMaterLevel4.Suppression ChamberMaterTemperature'.

Suppression ChamberAirTemperature 6.PrimaryContainment Pressure7.DrywellTemperature 8.DrywellOxygen/Hydrogen Analyzer~

9.Safety/Relief ValvePositionIndicators 10.Containment HighRadiation ll.Noblegasmonitorsa.ReactorBldg.Ventb.SGTSVentRRRRRRRQ*RRHHHHMHHHHHHRc.TurbineBldg.VentHR12.NeutronFluxMR(~ecoythepeepleee/+<ee~eel~)orhydrogenanayzer~usesamplegascontaining:

a.Nominalzerovolume'percenthydrogen, balancenitrogen.

b.Nominalthirtyvolumepercenthydrogen, balancenitrogen.

  • "CHANNEL CALIBRATION shallconsistofanelectronic calibration ofthechannel,notincluding thedetector, forrangedecadesabove10R/hrandaonepointcalibration checkofthedetectorbelow10R/hrwithan.installed orportab'le gammasource.eWg$ykc]prylan/p~

a(per/pnfg nerfgskingccfi(i+Mz

~n4Pftep're@

6'@+t~~nQ~jrrr~CM<dCCqCrg&rro&

ggrp(/deyCrfir~eg P+h.lire'+4reg~rr-J TABLE3.3.7.5-1 ACCIDENTHOHITORINGIHSTRUHENTAT IONINSTRUHENT 1.ReactorVesselSteamDomePressure2.ReactorVesselWaterLevel3.4.5.6.7.8.Suppression ChamberMaterLevelSuppression ChamberMaterTemperature Suppression ChamberAirTemperature PrimaryContainment PressureDrywellTemperature OrwellGaseousAnalyzera.Oxygenb.Hydrogen9.Safety/Relief ValvePositionIndicators 10.Containment HighRadiation ll.Noblegasmonitors*"

a.ReactorBldg.Ventb.SGTSVentc.TurbineBldg.Vent12.PrimaryContainment Isolation ValvePosition13.NeutronFluxREQUIREDNUHBEROFCHANNELS8,6locations 22/range22cS:A1/valve"11/valveMINIHlJHCHANNELSOPERABLE6,1/location 11/range11/valve"1/valveACTION80808080808080W828280818181818080APPLICABLE OPERATIONAL CONDITIONS 1,21,21,21,21,21,21,21,¹2¹1,¹2¹1,21,21,2and"""2and%**1,2and"""1,21,2"Acoustic monitor.""Hid-range andhigh-range channels.

      • Whenmovingirradiated fuelinthesecondary containment.

¹SeeSpecialTestException 3.10.1.j7~(~~cZ(/CDnok.Ag~ofIhOaefOI'i~

'4tS~~~~C~CeI~P4~>IS~ScancgVn/*~<~~,regCcir~M.

CACACtllTABLE4.3.7.5-1 ACCIOENTHONITORING INSTRUHENTATION SURVEILLANCE REUIREHENTS IRSTRUHEHT CHANNELCHECKCHANNELCALIBRATION GPaCCa)2.3.4.5.6.7.8.9.10.12.13.ReactorVesselSteaiOomePressureReactorVesselMaterLevelSuppression ChamberMaterLevelSuppression ChamberMaterTeimperature Suppression ChamberAirTemperature PrimaryContainment PressureOrywellTemperature OrywellOxygen/Hydrogen Analyzer~.Safety/Relief ValvePositionIndicators Containment HighRadiation Noblegasmonitorsa..ReactorBldg.Ventb.SGTSVentc.TurbineBldg.VentPrimaryContainment Isolation ValvePositionNeutronFluxRRRRRRRqARR**RRRNAR(lsg,fgytfgc,)ref(cHlh+4ERl~A+wA~ocif*ForhydrogenanalyzerPusesamplegascontaining:

ta.Nominalzerovolumepercenthydrogen, balancenitrogen.

b.Nominalthirtyvolumepercenthydrogen, balancenitrogen.

  • "CHANNEL CALIBRATION shallconsistofanelectronic calibration ofthechannel,notincluding thedetector, forrangedecadesabove1OR/hrandaonepointcalibration checkofthedetectorbelow1OR/hr>>thaninstalled orportablegammasource.~~~/<<,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)CCAADmTABLE3.3.7.5-1 ACCIDENTHONITORING INSTRUMENTATION INSTRUHENT

~REQUIREDNUMBEROFCHANNELSHINIHUMCHANNELSOPERABLEACTIONAPPLICABLE OPERATIONAL

~CONDITION 2.3.4.6.7.8.9.10.11.ReactorVesselSteamDomoPressureReactorVesselMaterLevelSuppression ChamberMaterLevelSuppression ChamberMaterTemperature Suppression ChamberAirTemperature PrimaryContainment PressureDrywellTemperature DrywellGaseousAnalyzera.Oxygenb.HydrogenSafety/Relief ValvePositionIndicators Containment HighRadiation Noblegasmonitors""

a.ReactorBldg.Ventb.SGTSVentc.TurbineBldg.Vent228,6locations 22/range22882k'/valve" 16,1/location 11/range11I'III1H1/valve"180l808080808080828280818181'11,2)lq21,212.1,21,21,2lP,2h'8,2II'.2121,2and*"*1,2and"**1212.NeutronFlux8012OCD"Acoustic monitor."*Hid-range andhigh-range channels""*Mhenmovingirradiated fuelinthesecondary containment.

DSeeSpecialTestException 3.10.1HThepreplanned alternate methodofmonitoring thisparameter, once"channel" tomeetthisrequirement.

implemented, isconsidered avalid TABLE4.3.7.5-l ACCIDENTMONITORING INSTRUMENTATION SURVEILLANCE REUIREMEATS INSTRUMENT 1.ReactorVesselSteamDomePressure'.ReactorVesselMaterLevel3.Suppression ChamberMaterLevel4.Suppression ChamberMaterTemperature 5.Suppression ChamberAirTemperature 6.PrimaryContainment Pressure7.DrywellTemperature 8.DrywellOxygen/Hydrogen Analyzers 9.Safety/Relief ValvePositionIndicators 10.Containment HighRadiation 11.Noblegasmonitorsa.ReactorBldg.Ventb.SGTSVentCHANNELCHECKCHANHELCALIBRATIONRRRRRRR*RRA%OMMc.TurbineBldg.Vent12.NeutronFlux!orhydrogenanayzer~(but notthepreplanned alternate method),usesample'as containing':

a.Hominalzerovolume'percent

hydrogen, balancenitrogen.

b.Nominalthirtyvolumepercenthydrogen, balancenitrogen.

"*CHANNEL CALIBRATION shallconsistofanelectronic calibration ofthechannel,notincluding thedetector, forrangedecadesabove10R/hrandaonepointcalibration checkofthedetectorbelow10R/hrwithaninstalled orportablegammasource.8Ifthepreplanned alternate methodisbeingutilized, anappropriate CHANNELCHECKandanappropriate CHANNELCALIBRATION shallbeperformed atthelistedfrequencies.

TABLE3.3.7.5-1 ACCIDENTHONITORING INSTRUHENTATION CMtOINSTRUHENT 1.ReactorVesselSteamDomePressure2.ReactorVesselMaterLevel3.Suppression ChamberMaterLevel4.Suppression ChamberWaterTemperature 5.Suppression ChamberAirTemperature 6.PrimaryContainment'Pressure 7.DrywellTemperature 8.DrywellGaseousAnalyzer~a.Oxygenb.Hydrogen9.Safety/Relief ValvePositionIndicators 10.Containment HighRadiation 11.Noblegasmonitors"*

a.ReactorBldg.-Ventb.SGTSVentc.TurbineBldg.Vent12.PrimaryContainment Isolation ValvePosition13.NeutronFluxREQUIREDNUHBEROFCHANNELS8,6locations 22/range22yy2kTI'1/va1ve"211/valveHINIHUMCHANNELSOPERABLE6,1/location 11/range11H1/valve*11/valve1ACTION80808080808080828280818181818080APPLICABLE OPERATIONAL CONDITIONS 1,21,21,21,21,21,21,2l,f281,8281,21,212and*"*and*A'42and1,21,2*Acoustic monitor."*Hid-range andhigh-range channels.

"*"Whenmovingirradiated fuelinthesecondary containment.

gSeeSpecialTestException 3.10.1.HThepreplanned alternate methodofmonitoring thisparameter, onceimplemented, isconsidered avalid"channel"tomeetthisrequirement..

~I

TABLE4.3.7.5-1 ACCIDENTMONITORING INSTRUMENTATION SURVEILLANCE REUIREHENTS INSTRUMENT 1.ReactorVesselSteamDomePressure2.ReactorVesselMaterLevel3.Suppression ChamberMaterLevel4.Suppression ChamberMaterTemperature

-5.Suppression ChamberAirTemperature 6.PrimaryContainment Pressurel.DrywellTemperature 8.DrywellOxygen/Hydrogen Analyzerg9.-Safety/Relief ValvePositionIndicators 10.Containment HighRadiation 11.Noblegasmonitorsa.ReactorBldg.Ventb.SGTSVentc.TurbineBldg.Vent'12.PrimaryContainment Isolation ValvePosition13.HeutronFluxCHANNELCHECKHHHHHMHHHMHHHCHANNELCALIBRATION

"'RRRRRRRQA'R*A'RNAR"Forhydrogenanalyzer,(but notthepreplanned alternate method),usesamplegascontaini'na; Ia.Hominalzerovolumepercenthydrogen, balancenitrogen.

-b.Nominalthirtyvolumepercenthydrogen, balancenitrogen.

""CHANNEL CALIBRATION shallconsistofanelectronic calibration ofthechannel,notincluding thedetector, forrangedecadesabove10R/hrandaonepointcalibration checkofthedetectorbelow10R/hrwithaninstalled orportablegammasource.glfthepreplanned alternate methodisbeingutilize'd, anappropriate CHANNElCHECKandanappropriate CHANNELCALIBRATION shallbeperformed atthelistedfreauencies.

SSES-FSAR recombiners arelocatedapproximately midwaybetweenthepedestalandcontainment wall.Thesuppression chamberrecombiners bothhavestructures locatedclosetotwo.oftherecombiner ports.Bothrecombiners havea42inchdiameterdiaphragm slabsupportcolumnapproximately 1-1/2feetfromthesuction,anda24inchbeamapproximately 6inchesfromthe26inchhighdischarge.

Thehydrogenrecombiner isanaturalconvection, flameless, thermalreactor-type hydrogen/oxygen recombiner.

Theinitiation timefortherecombiners ispriorto1.2days,post-LOCA asshowninFigures6.2-49,6.2-50and6.2-51.Theheat-uptimeisapproximately 4hours.Therefore, recombiner heat-upwillbeginapproximately 4hourspriortooperation.

Therecombiner heatsacontinuous streamofcontainment atmosphere toatemperature sufficient forrecombination ofthehydrogenandoxygen,to formwater.Therecombination unitconsistsofaninletpreheater section,aheater-recombination section,andamixingchamber.Theairisdrawnintotheunitbynaturalconvection viatheinletlouversandpassesthroughthepreheater section,which'consists ofashroudplacedaround,thecentralheaterstotakeadvantage ofheatconduction throughthewalls.Inthisareathetemperature oftheinletairisraised.Thisaccomplishes thedualfunctionofincreasing thesystemefficiency andofevaporating anymoisturedropletswhichmaybeentrained intheair.Thewarmedairthenpassesthroughthefloworificewhichhasbeenspecifically sizedtoregulatetheairflowthroughtheunit.Afterpassingthroughtheorificeplate,theairflowsvertically upwardthroughtheheatersection,whereitstemperature israisedtotherangeof1150-1400 F,causingrecombination ofH2and02tooccur.Therecombination temperature isapproximately 1135~8.Theheatersectionconsistsoffivebanksofelectricheatersstackedvertically.

Eachbankcontains60individual U-typeheatingelements.

Next,theairrisesfromthetopoftheheatersectionandflowsintothemixingchamber,whichisatthetopoftheunit.Here,thehotairismixedwiththecoolercontainment airtodischarge itbackintothecontainment atalowertemperature.

Thecoolercontainment airentersthemixingchamberthroughthelowerpartoftheupperlouverslocatedonthreesidesoftheunit."Table6.2-18givesthedesigncharacteristics ofthehydrogeniecombiner.

Rev.36,07/856.2-71 EO"200-103Reiision0Page17of33PC/P-4IF:THEN:0H2CONCENTRATION

>3%BYVOLUMEOR24HOURSHASELAPSEDSINCE1.72PSIGSIGNAL,STARTH2RECOMBINERS IAWOP-273"001 RUNDWCOOLERSINSLOWIAWES-234-001 Thisstepbecomeseffective whenreadandremainseffective untilflowchart exited.Ignitionofcombustible gases(hydrogen andoxygen)couldresultinsignificant containment pressuretransients, leadingtocontainment failure.ThisWillnotoccurifcontainment hydrogenconcentration ismaintained below4%.Therefore, starthydrogenrecombiners at3%concentration.

Rundrywellcoolersinslowtoavoidpocketswithhighhydrogenconcentrations.

Startbothsystemsalsoafter24hourshaselapsedfromreceiptofLOCAsignaltocounteract buildupofcombustible gasduetoradiolysis.

Securehydrogenrecombiners priortoinitiating containment sprays.pc/p-5(PC/P-1)REDUCEPCPRESSUREUSING:oSBGTIAWON-234-001, ONLYWHENDWANDSUPPCHAMBERTEMP<212FoRPVDEPRESSURIZATION ANDCOOLDOWNIAWRPVCONTROLoES"234-001, BYPASSING DRYWELLCOOLING'OGIC ISOLATIONS Reducecontainment pressureusinglistedprocedures.

Theseprocedures accountfor1.72psigisolations.

InitiateRPVdepressurization andcooldown'in accordance withE0-200-102, RPVControl,performed concurrently withthisprocedure.

UseSBGTonlyifprimarycontainment temperatures arebelow212~F:Iftemperature isabove212F,steammaybeadmittedtocontainment.

Continued useofSBGTwouldeventually reducecontainment's non-condensible airmassandpreventusingdrywellsprays.pc/p-eBEFOREDWORSUPPCHAMBERPRESSUREREACHES0PSIG,-TERMINATE PRESSUREREDUCTION Thisstepbecomeseffective whenreadandremainseffective untilflowchart exited.Itgivesappropriate timetostoppressurereduction, whatevermeansemployed(i.e.SBGTorsprays).Stoppressurereduction atthispointtopreventcontainment failureonnegativepressure.

0 RRCLIMITSEXPERIMENT PETONABLFLAMMABLE AIRNON-FLAMMABLE

$%O~20Figure1.COMBUSTION CHARACTERISTICS OFH>INAIRANDSTEAM Q~~CCOMBUSTIBLE 40NONFLAMMABLE

.00230AIRRAOIOLYSIS METAL-WATER RECOMBINATION INERTFigure2MITIGATIONOFDEGRADEDCOREENVIRONMENT BYRECOMBINA TION 4TOTALRADIOLYSIa1504W44'1004,ILR84.XSO~yye~Priul~eed (Ih-<<le)METALWATERREACTIONPlUSINITIALHYDROGEN1020TIMEAFTERLOCAIDAYSIRev.350784SUSCNEHANNA STEANELECTRICSTATIONUNITS1AND2FINALSAFETYANALYSNREPORTINTEGRATED PRODUCTION OFHYDROGENVS.TIMEAFTERLOCAFIGURE6.2-4.8 I

8C1NCCIICIV~JAXOpN3008OAHLNBQBBdBWllOA Rev.3507/84~SUSQUEHANNA STEAMELECTRICSTATIONUNITS1AND2FINALSAFETYANALYSISREPORTHYDROGENCONCENTRATION INTHE.DRYNELL VS.TIMEAFTERLOCA(SHORTTERM)BOURS"6'2-50 I1?F1~ATTACQIENT 6ICOIIThISKHT HYOROGENMONITORIAcontinuous.'fndication ofhydrogenconcentration inthecontainment atjaosphcrc shallbeprovidedinthecontrolrooa.Hcasurcacnt capability shallbcprovidedovertherangeof0to10Khydrogenconcentration underbothpositiveandnegativeaablentpressure.

ChastoPrevfousRufreaents andGuidanceRegulatory Gufde1.9>,Rev.2wasreferenced intheOctober30,1979letterastheguideforthedesignandqualification crfterfaforthecontafnecnt hydrogenmonitor.However,therehavebeenaanychangesaadetothisproposedrevisionandfthasnotyetbeensadeffw.'..Therefore, theappropriate sectionsofttwlatestversionofRegulatory Guide1.97havebeenaddedtothisletter(Appendix A)and,therefore, thisfstobeconsidered ancwrcqufreeent.

Thef~ltaentatfon datehasbeenchangedduetocqufpoent procurcacnt probleas.

Thenewfepleaentation scheduleisintendedtoallowlicensees enoughtiaetocoepletedesignmodifications withaafnfauanueberofplantshutdowns.

Clarification (1).DesignandqualifIcitfoncrfterfaareoutlinedfnAppendixA.'2)Ttwcontinuous fr.)ication ofhydrogenconcentration Isnotrequiredduringnoraaloperation.

lfanfndfcatfon fsnotavailable atalltfees,continuous indicatfon andrecording shallbefunctioning within30afnutesoftheinitiation ofsafetyinfection.

(3)Ttwaccuracyandplaceeent ofthehydrogeneonftorsshallbeprovidedand)ustified tobeadequatefortheirintendedfunctfon.

Tt::wqufrccwnt appliestoaltoperatfng reactorsandallapplicants foroperating licenses.

Ilceentatfon Foroperating

reactors, desfgnaodfffcatfons shouldbecoapleted byJanuary1,1982.Operating licenseapplicants withanoperating licensedatebeforeJanuary1,1982esthavedesignchangescoapleted byJanuary1,1982,whereasthoseapplicants withlicensedatespastJanuary1,1982austhavealldesignoodfff-catfonscoapletcd beforetheycanrccefvetheiroperating license.3-111 1Ittla*~
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