ML17318A551

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Tech Specs 3.2.2,3.2.1,3.2.6 & 4.2.6 for ECCS
ML17318A551
Person / Time
Site: Cook 
Issue date: 01/09/1980
From:
INDIANA MICHIGAN POWER CO.
To:
Shared Package
ML17318A550 List:
References
RTR-NUREG-0630, RTR-NUREG-630 NUDOCS 8001140463
Download: ML17318A551 (18)
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{{#Wiki_filter:IMPACTOFDATA<<PRESENTEDINDRAFTNUREG-0630ONDONALDC.COOKUNIT2LOCAANALYSISA.BaseCaseThemostlimitingbreakforDonaldC.CookUnit2isadoubleendedcoldlegguillotinebreakwithadischargecoefficientof0.8.UsingtheFebruary1978evaluationmodel,theresultsforthisbreakare:.1.Fq=2022.HotRodPeakCladdingTemperature(PCT)atBurstNode=1905.5oF,Elevation=6.05feet.3.HotRodPCTatnon-rupturedNode=2171.2oF,Elevation=7.5feetCladStrainDuringBlowdownAt7.5feet=1.154MaximumCladStrainat7.5feet=9.05%4.AverageHotAssemblyRodBurstElevation=9.0feetHotAssemblyBlockageCalculated=20.4ÃB.BurstNodeThemaximumpotentialimpactontherupturedcladnodeisexpressedinletterNS-TMA-2174intermsofthechangeinthepeakingfactorlimitb,FrequiredtomaintainaPCTof2200FandintermsofachangeinPCT(h,.PCT)at,.aconstantFn.Thisprocedureeliminatesextrapolatingdataoverawilerangeabove2200oFsincetheincreaseinmetalwaterreactionattheseelevatedtemperaturesmaymakesuchextrapolationsinaccurate. UsingNS-TMA-2174:a.+0.016Fcorrespondsto+150oF4PCTattheburstnode,b.NRCburstm)delcouldrequire5Fof-0.015,c.MinimumestimatedimpactofusingNRCstrainmodelisFqof-0.030.Therefore,maximumpenaltyforhotburstmodeis6PCT1(0015+0030)(150F/0.01)=675FMarginto2200F=2200-BurstNodePCT2200-1905.5=294.5F=hPCT2Therefore,Fpenaltyatburstnode(aFqB)(675-294.5)Fx(-0.01/150F)=-0.025C.Non-BurstNodeThemaximumtemperaturecalculatedforanon-burstlocationtypicallyoccursabovethecoremidplaneduringreflood.ThepotentialimpactinthisareainusingtheNRCfuelrodsmodelscanbe.estimatedbyexaminingtwoaspectsoftheanalysis.Thefirstaspectisthechangeingapconductanceresultingfromdifferencesincladdingstrain.Notethatcladstrainalongthefuelrodstopsafterruptureanduseofadifferentburstmodelcanchangethecalculatedbursttime.ThreesetsofaLOCAanalysiswerestudiedtoestablishanacceptablesensitivitytoapplygenericallytothisevaluation.ThemaximumPCTincreaseresultingfromachangeinstraininthehotrodis20Fperpercentdecreaseinstrainatthemaximumcladtemperaturelocation.SincethecladstrainduringtheRCSblowdownisunaffectedbythenewNRCdata,themaximumdecreaseincladstrainthatmustbeconsideredinthedifferencebetweenthe"maximumcladstrain"(MCS)andcladstrainattheendofblowdown(BCS)whicharelistedaboveinthe,basecasediscussion.Therefore,6PCT3=(20F/1%)'(MCS-BCS)(20F/1%)(905%-115%o)=158FThesecondaspectoftheanalysisthatcanincreasePCTisthecal-culatedflowblockage.UsingthemethodsdetailedinNS-TMA-2174,thefollowingchangeinPCTiscalculated. APCT4=(1.25F/X)(504-HotAssemblyBlockage)+(2.36F//)(75K-50Ã)1.25(50-20.4)+59F$PCT596F=5PCT4+QPCT3=158+96=254FA,PCT62200F-ActualPCT=2200-2171.2=28.8FTheFreductionrequiredtomaintainthe2200FlimitusingtheabovevaluesinconjunctionwiththeresultsofNS-TMA-2174F(N-0.23.D.BenefitFromImrovedAnalticalModellinTheeffectonLOCAanalysisofusingimprovedanalyticaltechniqueswhicharecurrentlyapprovedforuseinLOCAanalysisofplantsutilizingupperheadinjectionintheblowdown(SATANCode)calculationhasbeenquantifiedvia,ananalysisrecentlysubmittedtotheNRC.Sincethereviewofthisanalysisisnotyetcomplete,theNRChasestablishedacreditthatisacceptableforthisinterimperiod.ThiscreditforDonaldC.CookUnit2,whichisafourloopplantisQF~=+0.20.E.M11111BaseCase(February'78Model)2.02$F~penalty=max(ZLF~B,QF~N)=-0.23QF~benefit=+0.201.99MaximumOverallF~=1.99 ATTACHMENTBTOAEP'."NRC:00322BDONALDC.COOKNUCLEARPLANTUNITNO.2DOCKETNO.50-316LICENSENO.DPR-74 ~hg.I(ChN.2fAEP:NC:00297)RevisionstoNLimitin'Condition'of'0'eration'CO'3;2;2Fiure3.2-2andBasis'Item'3/42.1-Unit'No.'ThischangeinvolvesloweringthemaximumallowableFq(Z)limits.Themaximumvalueisbeingreducedfrom2.32to1.99.Untilthe1.99limitwasestablishedviatheevaluationdiscussedinAttachmentAofthisletter,anadministrativelimitof2.11wasemployedincompliancewiththeNRCorderwhichfollowedthed>hscoveryofa'logicinconsistency'nthemetal-waterreactioncalculationoftheWestinghouseECCSEvaluationModels.The2.11administrativelimitwasestablishedafteranewWestinghouseECCSanalysis(usingtheOctober1975Modelwiththemetal-watercorrection)was.performed.TheseanalysesresultsweretransmittedtotheNRConApril28,1978.AreanalysisofDonaldC.Cook2usingtheFebruary1978ModelresultedinamaximumFqof2.02.Thisbaseanalysiswasusedtoestablishthenew1.99limit..Thischangeassuresthecontinuedprotectionofthepublichealthandsafety.~CN'NI2(ChgN.4fAEP'.NN:00297)0'Revisions"to'L'CO'3;2;1:and:Fiure'3;2-'1'-':Unit:No!2Thischangeinvolveskeepingtheupperpowerlimitforthe'takingofactionat84/RatedThermalPower.ThechangerequestedinAEP:NRC:00297wastoraisethelimitto90%RTP.Thistechnicalbasisforthechangeisthesameas=thatofChangeNo.1above.Thischangeassures-thecontinuedprotectionofthepublichealthand'afety.~00N':0(ChgII.5fAP:N0:00297)5Revisions'to'L'CO:3;26:and:4!2;6'-:Unit'No.'ThischangeinvolveskeepingtheAPDMSturn-onpointat94%RatedThermalPower.ThechangerequestedinAEP:NRC:00297wastoraisetheturn-onpointto"100/RTP.ThischangeisbasedontherevisionstoLCO3.2.1andFigure,3.2-1asdiscussedinChangeNo.2since"theAPDMSturn-onpointisdefinedas10ÃabovetheupperlimitofLCO3.2.1.Thischangeassuresthecontinuedprotectionofthepublichealthandsafety. ~~~~44~ ~~POWERDlSTRIBUTIONLIMITSHEATFLUXHOTCHANNELFACTOR-F"(Z)LIMITINGCONDITIO.'lFOROPERATION3.2.2F(Z)shallbelimitedbythefollowingrelationships:F~(Z)<Q'.99)[K(Z)3forP>0.5pF(Z)<<[(p,qg)][Y.(Z)]forP<<0.5THEPMAiPOWERi<<andK(Z)isthefunctionobtainedfromFigure3.2-2foragivencoreheightlocation.APPLICABILITY:MODE1ACT!Oh:WithF(Z)exceedingitslimit:a.ComplywitheitherothefollowingACTIONS:1.ReduceTHERMALPOWERatleast1~~foreach1;;F(Z)exceedsthelimitwithin15minutesandsimiliarlyreducethePowerRangeNeutronFlux-HighTrioSetpointswithinthenext4hours;POWEROPERA.ONmayproceedforuptoatotalof?2hours;subsequencPOWEROPERATIOllmayproceedprovidedtheOverpoweruTTripSetpointshavebeenreducedatleast1..foreach1"F~(Z)exceedsthelimit.TheOverpoweraTTripSetpointreduc.ionshallbeperformedwiththereactorinatleastHOTSTANDBY.2.ReduceTHERMALPOWERasnecessarytomeetthelimitsofSpecification3.2.6usingtheAPDMSwiththelatestincoremapandupdatedR.b.IdentifyandcorrectthecauseoftheoutoflimitcondiitonpriortoincreasingTHERMALPOWERabovethereducedlimitre-quireddbya,above;THERMALPOWERmaythenbeincreasedprovidedF~(Z)isdemonstratedthroughincoremappingtobewithinitslimit.D.C.COOK-UNIT23/42-5I~<<<<<< I45('FIGUREK(Z}-NORMALIZEDFQ(Z}ASUNCTIClNOFCOt)Et/EIGI)THEATFLUXHOT,CHANNELFACTORNOPP~LIZ""0OPER"TINGENYELOPEFOUR-LOOPOPERATION~Basis:F~(Z)xPECCSlimitofj.'fQ1.0~"I"-:~:".I"~:tI~t:Z.:...I".:.;.i'::-::<E'(}~G(}(})j":":(II.EV,O.SSS)t~I~}.8}~~~~~~~~I~'~~~~~~~~~~~~~~~IiMII~IE}iEl1~4I~~~::t:'::::.'I::'"'::""I:.-"I::"I:I~~w'g~,(},'.VS+),'..:,:.:::i:::".:.:i:.::::,:":i.::::j":".:i:..:.:::i.:::.:"i":.:"~2.I~~~::::::I~~~I~~~I~~~"~','::':~I':.::'-I::':.:l::::::':I'"'::a'."...'.'...'.I'"...~~~~~~~I02468.1012CoreHeight(feet)D.C.COOK-uliIT23/42-8P4AWl%%Ihl4:A~ BASESThes"ecificai"nsohissectionprovideassurancecf-ue'.'nta"-rityd.ri,.cC~rditic.I{NormalOperation)andII(Inciden.scf,'=r=-teFrequency)even.sby:(a)maintainingthecalculatedO'GRin.hecoraatora"cvedesigndur;ngnormaloperationandinshorttrm'.ra.".S.en-.s,and(b)l'-itnghe.issiongasrelease,fuelpellettempera.ureandcladd',.g;..ehanical"rcpertiestowitninassuredesigncr'i-eria.inaddition,li;.;iting-the-oeaklinearpowe.densityduringCondi,c-a.'ven:sr"v..cesassurancthatheinitialconditionsassumed=or-heLOCAanalysesare"..e-ar.theECCSaccep.ancecriter',aliraqitof2200';isnotexcee'ed.Thedef'.niticnsofcrtainhochannelandpeakingfactorsasuseinthesespec;f;cat;cnsareasfollows:Fq(Z)Hea=Flux.'-.'otChannelFactor,fsdefiredasthe."..ax:.-..u."..loc:-;heatfluxcnthesurfaceofafuelrodatcoreelevati".nZ.diividedbytheaveracefuelrcdheatflux,al1cwingforman-u;acturingtol=rancesonfue'1pelletsandrods.3/4.2.1nuclearEnhairyRiseHot.ChannelFac.or,isdeAndas.he'ratiooft.".eintegraloflinearpc"eralongtherodwi:hthhichesin-.aeratedpowertotheave.acercdpcwer.RadialPeakingFa"-.or,isdefinedas.heratoc,peakpowerdens'0avelagepcwerdensity'the"Gri"nplanea.tc".oeievaticnZ.FLUXOIFFER'.<CE('FO)ThelimitsonAXIALFLUXOIFFEREi<CEassurehattheF~(Z,uperbounda,",v.opeo-,~.qgtimesthenormali=daxialpekingac:onisnoexcee"'e"durin"eithernormaloperationorintheeventofxenonredis-tributionf"liowingpcwe.changes.Tarcet,fluxd',f=ereneisdeterminedatequilibriumxeronconditions.Thefullylenc-.hrc"'saa.aybeposi:ionedwi.hinthecoreinacc"rcancewithheirros"ectiveirrserticn1imitsandshouldbeinsertedne=rtheirnor;a'.-c~:;nfc.=-e=-dystatecperationathichpowerlevels.Thevalueof"'":arce-flu"difierenceobtaineduncertheseconc;tiorsdividedbv-;.e,racicnofRATEDTHER'".ALPOX";.";isthetarge"fluxdiffe.e..ea-RAT:-D;H=R.'!ALPOWERfortheassociatedcoreur.".u"con-ditic;,s.ar"etf.uxd;-.ferences-,orotherTHER,'iALPOWERieve:s=..eobtainedbv.-..ulticl".nc.the?ATEDTHER.".ALPOWERvaiueby-.heac=roar'.atea,fractionalTH=K.'".ALPG'r'=.=.level.TheperiodicupdatingGThefluxdiffe.ncevalueisnecessaryoreflectcoreburnupconsicra-.,-.ns.0oCoCQQKJl'llIaB3/42-1Ar,end-,.nNo.10 Althoughi";5in.endedthattheplantwillbeoperatedwiththeAX~LFlUXDF"""?:"liC.""withinthe~:5~talge'andabouthetargetfluxdiff=rence,duringrapidp'iant:.'-.'=,=.Y~LPC'~'-"Rreducticns,controlr..dmot'.onuiilcausetke%F0-."dev-.ateoutsideofthetargetbanda.re-du-edT'."'=.".l"~LPG'n=R1evels.Thisdeviaicnwi1lAota=feetthexenonr"is.ibu-icnsuff',cientlyochAgetheenvelopeofpeaking,ac:ors>:hicki-..avbereachedonasubseq'entreturntoP~T""0Ti=".='QLPCW~R(withtheAFDui"hinthetargetband)providedthetiriedurationofthedevi-ationi51lmlted~r'cc01CiAglv,a1hourpenaltydev.ation1imitcumu-iaiveCurActheprevicus2<hoursisprovidedolopertionoutsideofthetar"etbandbuw-thinthe1'.mitsofFigure'.2-1whilea7',-::-.=.i"~PC'r'-R1vet5be;ween0"andFQ/ofRATED'IiERiQLpoI;EpP.rorIH..=';.LPC<'cR1evel5beuee!l1~'nd50looiK&I"0IHh.."ARL!v'rR,deviationso0ou5-'de~ithetarectbandare1ess5iQnlic:-AtTlepenatyof2AŽursac:uait,.-.;ereflectsthisreducedsignificarce.Provisionsfolmonior-t,".gtheAFOonariautomat'cbasisarederivedf"ot."'-eplanprocsscorn.utrkroughtheAFDHonitorAlarm.Tnecc..."uterdeter,inesheoneminu-eaverageofeacho-theOPt.RABL=~~1'CJgexcored=-ec"oroutptsancprov"esana!arm...essacelr.edlatelylf'he00".areas2of4or20"3OP"~wBLexcorochanne!sareoutside~~~~-:;etar"eLandandtheTn""."".'QLP"'ri"-8isgreater-.',",angqy,oi~i=Jin-..APCn'.OurngoperationatT."'.:-."-..".-'.LPO'4"=31eve!sbe.ueen"G~arids'pt-andb'een1":~and=OsRRlDlH.'L.Q'n".tiiecc..uteroutsaA1aliimssagwhenthepenalydevla.OAaceumiulatesbeyondtAQ1lmi"5of1h"urard2hours,respectively.FioureB3/42-1showsaypicalmonthlytargetband.O.C.COOK-Vali283/42-2 Cs\ CMANGENO.2 3/4.2POWER:,.STRIBJTIONLIMITSfAXIALFLUXDIFFERENCE(AFD)LIMITINGCOleDITIOteFOROPERATION3.2.1TheindicatedAXIALFLUXDIFFERENCE(AFD)shallbemaintainedwithina+5.targetband(fluxdifferenceunits)aboutthetargetfluxdifference.IAPPLICABILITY:.ai>ODE1AuO'llE50'eRATEDTHERMALPOWERACTION:a.WiththoindicatedAXIALFLUXDIFFERENCEoutsideofthe+5~targetbardaboutthetargetfluxdifferenceandwithTHERMALPOWER:Above5')5ofRATEDTHERMALPO!!ER,within15minutes:a)EitherrestoretheindicatedAFDtowithinthetargetbandlimits,or2.b)ReduceTHERMALPOWERtolessthangpssofRATEDTHERMALPOWER.Between50:.andf8/.ofRATEOTHERMALPO!E'ER:a)POWEROPERATIONmaycontinueprovided:1)TheindicatedAFDhasnotbeenoutsideofthe+5%targetbandformorethan1hourpenaltydeviationcumulativeduringtheprevious24hours,and2)TheindicatedAFDiswithinthelimitsshownonFigure3.2-1.Otherwise,reduceTHERMALPOWERtolessthan50.,ofRATEDTHERMALPOWERwithin30minutesandreducethePowerRangeNeutronFlux-HighTripSetpointsto<55".ofRATEDTHERMALPOWERwithinthenext4hours.b)SurveillancetestingofthePowerRangeNeutronFluxChannelsmaybeperformedpursuanttoSpecification4.3.1.1.1providedtheindicatedAFDismaintainedwithinthelimitsofFigure3.2-1.Atotalof16hoursoperationmaybeaccumulatedwiththeAFDout-sideofthetargetbandduringthistestingwithoutpenaltydeviation.E3.1.2D.C.COOK-UNIT2.3/42-1 ONERDISTR'BUT~9'!L',"~SCTIOt(:(Continued)c)SurveillancetestingoftheAPDMSmaybeperformedpursuanttoSpecification4.3.3.7.1providedtheindicatedAFDismaintainedwithinthelimitsofFigure3.2-1.Atotal(of6hoursofoperationmaybeaccumulatedwiththeAFDoutsideofthetargetbandduringthistestingwithoutponaltydeviation.b.THERMALPO'<<ERshallnotbeincreasedaboiegpss,ofRATEDTHERl1ALPOMERunlesstheirdicatedAFDiswithinthe+5:>targetbandandACTION2.a)1),abovehasbeensatisfied.c.THERMALPO'<<ERshallrotbeincreasedabove50'!ofRATEDTHRMALPOWERunlesstheindicatedAFDhasnotbeenoutsideofthe+5targetbandformorethan1hourpenaltydeviationcumulativeduringtheprevious24hours.SUiVlEILLAl(CEREnU'lR'EM:iTS4.2.1.1TheindicatedAXIALFLUXDIFF"RECCEshallbedeterminedtobewithinitslimitsduringPOWEROPERATIO,")above15".lofRATEDTHERMALPOAERby:a.MonitoringtheindicatedAFDforeachOPEPABLEexcorechannel:-1.Atleastonceper7dayswhentheAFDMonitorAlarmisOPERABLF,and2.Atleastonceperhourforthefirst24hoursafterrestoringtheAFDMonitorAlarmtoOPERABLEstatus.b.MonitoringandloggingtheindicatedAXIALFLUXDIFFERED'iCEforeachOPERABLEexcorechannelatleastonceperhourforthefirst24hoursandatleastonceper30minutesthereafter,whentheAXIALFLUXDIFFERED!CEMonitorAlarmisinoperable.TheloggedvaluesoftheindicatedAXIAL.FLUXDIFFEREHCEshallbeassumedtoexistduringtheintervalprecedingeachlogging.D.C.COOV,-Ur~rT23/42-2. ~~~~~:I-".~~r~~~~~~~~~~~I~~~~~~I~II~~~~~~f~~~~~~'~~~~~~~~~~IJJ~~~~~~A~~~~l-t100...,~...~~~~I~~~ti~~~II~~0frf~~~~~)w~'lf-UNACCEPtA-<""'(Ig,yq)OPER'C"'.I'((~~p)U<iACCEPTABLE--'==C?=RATIO'i80-3=-j.fI~~~~~~~~~~~If~~~~I~~~r~~60~~~~~~I~~\~~~~~~CCEPTA"L=~~I:OPERA(IG;i-r~~~~~~~r~~~~-~(a>a~340~~~~f~~~~~g+SO)j~~~~\~~~~~20'!..-'I:~~~~rI~~~~I~~~~r~~~~~~~~~~~~~tI~J~~I~~~~~~~~~~~~~~~~'C~~~~~-50-40-30-20"1001020304050FLUXDIFFERENCE.QI)'roFIGURE3.2-1AXIALFLUXDIFtREiMC-LIMITSASAFUi4CTIONQFRATF0THERh1ALPOiVERO.C.COOK-UH?T23/42-4 '.'.3PO's'lERDISTRIBJTIClsLab.TSAXIALPO'r'ERDISTRIBUTIOLIMITINGCO.'iDITIO.'lFOROPERATION3.2.6Theaxialpowerdistributionshallbelimitedbythefollowingrelationship:[F-{Z)]S=f~9~1'.r(z)(R.)(PL)(1O3)(1+-)(1O7)Mhere:rJa.F.(Z)isthenormalizedaxialpowerdistributionfrom.himblejjatcoreelevationZ.b.C.'.PListhefractionofRATEDTHER~'lALPOWER.K(Z)isthefunctionobtainedfromFigure3.2-2foragivencoreheigttlocatior,;R.,forthimblej,isdeterminedromatleastn=6in-corefluxmapscoveringthefullconfigurationofpermissiblerodpatternsabove0+/ofRATEDTHERt1ALPOWERinaccordancewith:nR-=-.~R-~'n=1Mhere:Peas1ijMaxand[F.(Z)]<isthemaximumvalueofthenormalizedijMaxaxialdistributionatelevationZfromthimblejinmapiwhichhadameasuredpeakingfactorwithoutuncertaintiesDeas.ordensificationallowanceofv~.0.C.COOK-UNIT23/42-17 POWERDISTRIBUTIONLIP!.TSLINITIN"CONDITIO.'(FOROPERATION(Coninued)oisthestandarddeviationassociatedwiththimblej,expressedasafractionorpercentageofR.,andisderivedfromnfluxmapsJfromtherelationshipbelow,or0.02,(2:.)whicheverisgreater.n1$-21/2[-1,.1(R.-.Ri)]R-Thefactor1.07iscomprisedof1.02and1.05toaccount'ortheaxialpowerdistributioninstrumentationaccuracyandthemeasure-mentuncertaintyassociatedwithF.usingth!emovabledetectolsysemrespectively.Thefactor1.03istheengneeringuncertaintyfactor.'PPLICABILITY:NODE1abovef'tf.'FRAEDTHERIALPOWER=.ACTION:)Ca.Witha-F(Z)factorexceeding[F.(Z)]Sby.4percent,reduceJJTHER!ALPOWERonepercentforeverypercentbywhichtheF.(Z)factorexceedsitslimit'within15minutesandwithinthenexttwohoursei.herreducetheF,-(Z)facortowithinitslimitorreduceTHER,",ALPOWEP.toqqy'.orlessofRATEDTHER'>ALPOWER.b.WithaF.(Z)factorexceeding[F.(Z)]Sby>4percent,reduceJJSTHEfNALPOWERto9'j%orlessofRATEDTHER'!AlPOWERwithin15minutes.0TheAPQNSmaybeoutofservicewhensurveillancefordeterminingpowerdistributionmapsisbeingperformed.D.C.COOK-UNIT23/42-18c! rP}}

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