ML17331B195

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Proposed Tech Specs 3/4.1.3,increasing Limit for Control Rod Misalignment at or Below 85% Rated Thermal Power
ML17331B195
Person / Time
Site: Cook  American Electric Power icon.png
Issue date: 01/17/1994
From:
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
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ML17331B194 List:
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NUDOCS 9401270037
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ATTACHMENT 2TOAEP:NRC:1182 EXISTINGTECHNICAL SPECIFICATION PAGESMARKEDTOREFLECTPROPOSEDCHANGES9401270037 940117PDRADOCK05000315PPDR CO0343VLC0'SSLIINGCONDIOFO0ONESF~.-,"..':)

~ggallindivIdua,l i4I~~~~P~Q4i~+4.alloMchrodollsdJQ<~~~3.1.3.1Allfulllength(shutdown andcontrol)rodsshallbeOPERABLEaad-countet,':;de'mand poe'dtdon~

o.s"Q(logs;:,in~Wdt8~W+~aACTION:a.With<oneormorefull,l'ength rodsinoperable duetobeingimmovable asaresultofexcessive frictionormechanical interference or'nowntobeuntrippable, determine thattheSHUTDOWNMARGINrequire-mentofSpecification 3.1.1.1issatisfied within1hourandbeinHOTSTANDBYwithin6hours.b.Withmorethanonefulllengthrodinoperable ormisaligned fromtheI+$mbeinHOTSTANDBYwithin6hours.g,uo~re~~is~ltgnm6%~c.Withonefulllengthrodinoperable duetocausesotherthanaddressed byACTIONa,above,ormisaligned fromitsgroupstep+~Jg~counterdemandpositionbymorethan+houreither:1.TheaffectedrodisrestoredtoOPERABLEstatuswithintheabovealignment requirements, or2.Theaffectedrodisdeclaredinoperable andth'eSHUTDOWNMARGINrequirement ofSpecification 3.1.1.1issatisfied.

POWEROPERATION maythencontinueprovidedthat:e~a)Areevaluation ofeachaccidentanalysisofTable3.1-1isperformed within5days;thisreevaluation shallconfirmthatthepreviously analyzedresultsoftheseaccidents remainvalidforthedurationofoperation undertheseconditions, andb)TheSHUTDOWNMARGINrequirement ofSpecification 3.1.1.1isdetermined atleastonceper12hours,andr>SeeSpecialTestExceptions 3.10.2and3.10.4pereWcpn~gcf.<D.C.COOK-UNIT13/41-18AMENDMENT NO.7$p28,120

oforTHERMALPOWERlessthanorequalto85XofRATEDTHERMALPOWER,theallowedrodmisalignment is~18steps,andoforTHERMALPOWERgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignment is~12stepsorasdetermined fromFigure3.1-4.Figure3.1-4permitsforanallowedrodmisalignment fromJ13steps(forAPLequalto101X)to+18steps(forAPLgreaterorequalto106X)providedthevalue'fR(definedinFigure3.1-4)isgreaterthanorequalto1.04.

REACTIVITY CONTROLSYSTEMSLIMITINQCONDITION FOROPERATION Continued c)Apowerdistribution mapisobta4nedfromthemovableincoredetectors andF(Z)andF,"HareverifiedtobewithintheirlimitswiPhin72hours,andd)Eitherthe"THERMALPOWERlevelisreducedtolessthan,orequalto75%ofRATEDTHERMALPOWERwithinonehourandwt:thinthenext4hoursthehighneutronfluxtripsetpointisreducedtolessthanorequalto85%ofRATEDTHER."1AL POWER,or,e)Theremainder oftherodsinthegroupwitthei<,~~,p~<~l~sinoperable rodarealignedtowithin--oftheinoperable rodwithinonehourwhilemaintaining therodtsequenceandinsertion limitsasspecified intheCOLR;theTHERMALPOWERlevelshallberestricted pursuanttoSpecification 3.1.3.5duringsubsequent operation.

SURVEILLANCE REUIREMENTS 4,1.3.1.1 Thepositionofeachfulllengthrodshallbedetermined tobewithinthegroupdemandlimitbyverifying theindividual rodpositions atleastonceper12hoursexceptduringtimeintervals whentheRodPositionDeviation Monitorisinoperable, thenverifythegrouppositions atleastonceper4hours.4.1.3.1.2 Eachfulllengthrodnotfullyinsertedshallbedetermined tobeOPHVBLEbymovementofatleast8stepsinanyonedirection atleastonceper31days.4.i.3.l,3

~i0.i(0&rcxke>scilge~+>+

for~<<AE4POM<grccd~rSC7.K%mid)meZ~~9cqpep sM(kdt~~4'~~J<+~~~M~~~~~~~+'+

APLs~~Xi~~Ac&l~A.Z.LZ.COOKNUCLEARPlANT-UNIT13/41-19AMENDMENT NOf20,146 REACTIVITY CONTROLSYSTEMSPOSITIONINDICATOR CHANNELSLIMITINGCONDITION FOROPERATION 3.1.3.2Allshutdownandcontrolrodpositionindicator channelsandthedemandpositionindication systemshallbeOPEPAHLEandcapableofdtldggll'dd"dl.ddl~drex)e)sotlgHRck Peda~3n~rF>~fj~3,).3,1,APPLICABILITY:

MODES1and2.ACTION:Mithamaximumofonerodpositionindicator channelpergroupinoperable either:l.Determine thepositionofthenon-indicating rod(s)in-directlybythemovableincoredetectors atleastonce'er8hoursandimmediately af:eranymotionofthenon-indicating rodwhichexceeds24stepsinonedirecionsincethelastdetermination oftherod'sposition, or2.'ReduceTHERMALPOWERTO<50"ofRATEDTHERMALPOWERwithin8hours.Withamaximumofonedemandpositionindicator perbankinoperable either:~~l.Verifythatallrodpositionindicators forthea,,ec.edbankareOPERABLEandthatthemostwithdrawn rodandthe'eastwithdrawn

'rodofthebankarewithinamaximumofofeachotheratleastonceper8hours,or+4.allo~re,m)swig)g~~

2.ReduceTHERMALPOMERto<50"ofRATEDTHERMALPOWERwithin8hours.SURVEILLANCEREOUIREMENTS~~14~rMg)l;g~~ry4.1.3,2Eachrodposiiionindicator

'channelshal'1bedete'rmined.to beOPEPABLEbyverifyingthedemandposi.~ion idicationsystemandtherodlgi~12hoursexceptduringtimeintervals whentheRodPositiontjeviation Monitorisinoperable, hncomparethedemandpositionindication systemandtherodpositi"nindicator channelsatleastonceper4hours.D:C.COQK-UNIT13/41-20Amendment No.28 POWERDISTRIBUTION LIMITSBASES34.2.2and34.2.3HEATFLUXHOTCHANNELFACTORANDNUCLFMLENTEiALPY RISEHOTCHANNELFACTORThelimitsonheatfluxhotchannelfactor,andnuclearenthalpyrisehotchannelfactorsensurethat1)thedesignlimitsonpeaklocalpowerdensityandminimumDNBRarenotexceededand2)intheeventofaLOCAthepeakfuelcladtemperature'ill notexceedthe2200FECCSacceptance 0criterialimit.Eachoftheseismeasurable, butwillnormallyonlybedetermined periodically, asspecified inSpecifications 4,2.2,1,4.2.2.2,4.2.3,4.2.6.l.and4.2.6.2.Thisperiodicsurveillance issufficient toensurethatthehotchannelfactorlimitsaremaintained provided:

RE.~lid,~

un%%Tan.eS~<X~a.Cocarolroinsnglegz'pmoyeogethprpith~ip4vialrdieronifrinbymoreghy+lgspfpsfpomAheroudeandostionb.Controlrodgroupsaresequenced withoverlapping groupsasdescribed inSpecification 3.1.3.5.c.Thecontrolrodinsertion limitsofSpecifications 3.1.3.4and3.1.3.5aremaintained.

d.Theaxialpowezdistribution, expressed intermsofAXIALFLUXDIFFERENCE, ismaintained withinthelimits.Therelaxation inFHasafunctionofTHER.'fAL POWERallowschangesintheradialpowershapeforallpermissible rodinsertion limits.F>willbemaintained withinitslimitsasspecified intheCOLR,providedcondztions (a)through(d)abovearemaintained.

WhenanFmeasurement istaken,bothexperimental errorandmanufacturing tolerance mustbeallowedfor.5%istheappropriate allowance forafullcoremaptakenwiththeincoredetectorfluxmappingsystem,and3%istheappropriate allowance formanufacturing tolerance.

WhenFHismeasured, experimental errormustbeallowedfor,and4%istheappropriate allowance forafullcoremaptakenwiththeincoredetection system.This4%measurement, uncertainty hasbeenincludedinthedesignDNBRlimitval'ue.Thespecified limitforF"Halsocontainsanadditional 4%allowance foruncertainties.

Thetotalallowance isbasedonthefollowing considerations:

COOKNUCLEARPIANT-UNIT1B3/42-4~i/QfiliANEHDMEHT No.7g,f29,146 Controlrodsinasinglegroupmovetogetherwithnoindividual rodinsertion differing bymorethan~18stepsfromthegroupdemandposition(allowedrodmisalignment) forpowerlevelslessthanorequalto85XofRATEDTHERMALPOWER.Forpowerlevelsgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignment isfrom+12toJ18steps,whichisdependent ontheAllowable PowerLevelandtheratioofFN~limitat100XofRATEDTHERMALPOWERtomaximummeasuredF~asindicated inFigure3.1-4.

REACTIVITY CONTROLSYSES3413OVBLCONTROLSSEMBLIES LIMITINGCONDITIOFOROPERATION

~ggJ(;PJtviJaal iAJIca:t4 MPok~~Ivlt4O.lkockM~ISc1'IcJyhq~

Ct3.1.3.1Allfulllength(shutdown andcontrol)rodsshallbeOPERABLEand.positioned-wi<hin~2-s-tep~dmaeed-posi.-eicnr) oftheirgroupstepcounterdemandpositiony g,g~)to~s,9~JL+c3ACTION:a~Withoneormorefulllengthrodsinoperable duetobeingimmovable asaresultofexcessive frictionormechanical interference orknowntobeuntrippable, determine thattheSHUTDOWNMARGINrequire-mentofSpecification 3.1.1.1issatisfied within1hourandbeinHOTSTANDBYwithin6hours'~Withmorethanonefulllengthrodinoperable ormisaligned fromthe(Xndi~d-poskt~m~

beinHOTSTANDBYwithin6hours.aJ(O~cab~iS~tIgWVn~~

Withonefulllengthrodinoperable duetocausesotherthanaddressed byACTIONa,above,ormisaligned fromitsgroupstepcounterdemandpositionbymorethan~@Jl~d'.'.poc~~POWEROPERATION maycontinueprovidedthatwithinonemt~ll~~houreither:1.TheaffectedrodisrestoredtoOPERABLEstatuswithintheabovealignment requirements, or2.Theaffectedrodisdeclaredinoperable andtheSHUTDOWNMARGINrequirement ofSpecification 3'.1.1issatisfied.

POWEROPERATION maythencontinueprovidedthat:a)Areevaluation ofeachaccidentanalysisofTable3.1-1isperformed within5days;thisreevaluation shallconfirmthatthepreviously analyzedresultsoftheseaccidents remainvalidforthedurationofoperation undertheseconditions, andb)TheSHUTDOWNMARGINrequirement ofSpecification 3.1.1.1isdetermined atleastonceper12hours,and~vE~F'AQF9)4l-l9::SeeSpecialTestExceptions 3.10.2and3.10.3D.C.COOK'-UNIT23/41-18AMENDMENT NO.78>]P7 If8 oforTHERMALPOWERlessthanorequalto85KofRATEDTHERMALPOWER,theallowedrodmisalignment is~18steps,andoforTHERMALPOWERgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignment isJ12stepsorasdetermined fromFigure3.1-4.Figure3.1-4permitsforanallowedrodmisalignment fromJ13steps(forAPLequalto101X)toJ18steps(forAPLgreaterorequalto106X)providedthevalueofR(definedinFigure3,1-4)isgreaterthanorequalto1.04.

REACTIVITY CONTROLSYSTEMSLIMITINGCONDITION FOROPERATION Continued c)Apowerdistribution mapJ,sobtainedfromthemovableincoredetectors andF(Z)andF'areverifiedtobewithintheir.limitswithin73hours,antd)e)EithertheTHERMALPOWERlevelisreducedtolessthanorequalto75%ofRATEDTHERMALPOWERwithinonehourand'withinthenext4hoursthehighneutronfluxtripsetpointisreducedtolessthanorequalto85$ofRATEDTHERMALPOWER,orTheremainder oftherodsinthegroup,th<phe~

(+zz~<~/-

inoperable.

rodarealignedtowithin'ftheinoperable rodwithinonehourwhilemaintaining therodsequenceandinsertion limitsasspecified intheCOLR;theTHERMALPOWERlevelshallberestricted pursuanttoSpecification 3.1.3.6dudingsubsequent operation.

SURVEILLANCE REUIREMENTS 4.1.3.1.1 Thepositionofeachfulllengthrodshallbedetermined tobewithinthegroupdemandlimitbyverifying theindividual rodpositions atleastonceper12hoursexceptduringtimeintervals whentheRodPositionDeviation Monitorisinoperable, thenverifythegrouppositions atleastoncepei4hours.4'.1.3.1.2Eachfulllengthrodnotfullyinsertedinthecoreshallbedetermined tobeOPERABLEbymovementofatleast8stepsinanyonedirection atleastonceper31days.COOKNUCLEARPLANT-UNIT23/41-19AMENDMENT NO10yl07yl22

'I

~'IQ~~~rII~~I~~y~~I~1~~~~~~~~~~~~~~y~~~~~~~0~~~~~~4~~~~~~~~~~~~~~~~~~~1~~~r~~~~0~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~r~~~\~~~I~~~r~'I.~S~~~~~~~~I~~r~~~0'I0r~0~

POWERDISTRIBUTION LIMITSBASES34.2.2and34.'2.3HEATFLUXHOTCHANNELFACTORANDNUCLEARERDVQZYRISEHOTCHANNELFACTORThelimitsonheatfluxhotchannelfactor,andnuclearenthalpyrisehotchannelfactorensurethat.1)thedesignlimitsonpeaklocalpoverdensityandminimumDNBRarenotexceededand2)intheeventofaLOCAthepeakfuelcladtemperature villnotexceedthe2200FECCSacceptance 0criteria'limit; Eachoftheseiameasurable butvi'llnormallyonlybedetermined peziodfcally asspecified inSpecifications 4.2.2.1,4.2.2.2,4.2.3,4.2.6.1and4.2.6.2.Thisperiodicsurveillance iasufficient toensurethatthelimitsaremafntained provided:

RCPCMeulTEDA&acH<b~ma.C6orWnngegPeyeend4d1jieffgo+pmiepar6eda4o.b.Controlrodgroupsaresequenced vithoverlapping groupsasdescribed inSpecification 3.1.3.6,c.Thecontrolrodinsertion limitsofSpecifications 3.1.3.5and3.1.3.6aremaintained.

d.Theaxialpoverdiatributfon, expressed intermsofAXIALFLUXDIFFERENCE, iamaintained vfthinthelimits.F,villbeaaintafned vfthinitslimitsasspecified intheCOLRprovidedconditions a.thzoughd.abovearemafntained.

Thezelaxation ofFasafunctionofTHERMALPOWERallovschangesintheradialpovershapefPzallpermissible rodinsertion liaits.Theformofthisrelaxation forDNBRlimitsisdiscussed fnSection2.1.1ofthisbasis.WhenanFmeasurement iataken,bothexperfaental errorandaanu-factuzing tolerance austbeallovedfor.5%iatheapproprfate allovance onFforafullcoremaptakenviththeincoredetectorfluxmappingsystemand3Pinth>>appropriate allovance formanufacturing tolerance.

COOKNUCLEARPLANT-UNIT2.B3/424~~Np.8()722, 0lI,P Controlrodsinasinglegroupmovetogetherwithnoindividual rodinsertion differing bymorethanJ18stepsfromthegroupdemandposition(allowedrodmisalignment) forpowerlevels'ess thanorequalto85XofRATEDTHERMALPOWER.Forpowerlevelsgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignment isfromJ12to~18steps,whichisdependent ontheAllowable PowerLevelandtheratioofFN~limitat100KofRATEDTHERMALPOWERtomaximummeasuredFN~asindicated inFigure3.1-4.

ATTACHMENT 3TOAEP'NRC'1182 PROPOSEDTECHNICAL SPECIFICATION PAGES REACTIVITY CONTROLSYSTEMS3413MOVABLECONTROLASSEMBLIES GROUPHEIGHTLIMITINGCONDITION FOROPERATION 3'.3.1Allfulllength(shutdown andcontrol)rodsshallbeOPERABLEwithallindividual indicated rodpositions withintheallowedrodmisalignment oftheirgroupstepcounterdemandpositionasfollows:oforTHERMALPOWERlessthanorequalto85KofRATEDTHERMALPOWER,theallowedrodmisalignment is~18steps,andoforTHERMALPOWERgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignment is~12stepsorasdetermined fromFigure3.1-4.Figure3.1-4permitsforanallowedrodmisalignment from~13steps(forAPLequalto101X)toJ18steps(forAPLgreaterorequalto106X)providedthevalueofR(definedinFigure3.1-4)isgreaterthanorequalto1.04.APPLICABILITY:

MODES1*and2*ACTION:a.Withoneormorefulllengthrodsinoperable duetobeingimmovable asaresultofexcessive frictionormechanical interference orknowntobeuntrippable, determine thattheSHUTDOWNMARGINrequirement ofSpecification 3.1.1.1issatisfied within1hourandbeinHOTSTANDBYwithin6hours.b.Withmorethanonefulllengthrodinoperable ormisaligned fromthegroupstepcounterdemandpositionbymorethantheallowedrodmisalignment, beinHOTSTANDBYwithin6hours.c.Withonefulllengthrodinoperable duetocausesotherthanaddressed byACTIONa,above,ormisaligned fromitsgroupstepcounterdemandpositionbymorethantheallowedrodmisalignment, POWEROPERATION maycontinueprovidedthatwithinonehoureither:1.TheaffectedrodisrestoredtoOPERABLEstatuswithintheabovealignment requirements, or2.Theaffectedrodisdeclaredinoperable andtheSHUTDOWNMARGINrequirement ofSpecification 3.1.1.1issatisfied.

POWEROPERATION maythencontinueprovidedthat:a)Areevaluation ofeachaccidentanalysisofTable3.1-1isperformed within5days;thisreevaluation shallconfirmthatthepreviously analyzedresultsoftheseaccidents remainvalidforthedurationofoperation undertheseconditions, and*SeeSpecialTestExceptions 3.10.2and3.10.4COOKNUCLEARPLANT-UNIT13/41-18AMENDMENT NO.45,Q8,420

REACTIVITY CONTROLSYSTEMSLIMITINGCONDITION FOROPERATION Continued b)TheSHUTDOWNMARGINrequirement ofSpecification 3.1.1.1isdetermined atleastonceper12hours,andc)Apowerdistribution mapisobtainedfromthemovableincoredetectors andF<(Z)andF~areverifiedtobewithintheirlimitswithin72hours,andd)EithertheTHERMALPOWERlevelisreducedtolessthanorequalto75XofRATEDTHERMALPOWERwithinonehourandwithinthenext4hoursthehighneutronfluxtripsetpointisreducedtolessthanorequalto85XofRATEDTHERMALPOWER,ore)Theremainder oftherodsinthegroupwiththeinoperable rodarealignedtowithintheallowedrodmisalignment oftheinoperable rodwithinonehourwhilemaintaining therodsequenceandinsertion limitsasspecified intheCOLR;theTHERMALPOWERlevelshallberestricted pursuanttoSpecification 3.1.3.5duringsubsequent operation.

SURVEILLANCE REUIREMENTS 4.1.3.1.1 Thepositionofeachfulllengthrodshallbedetermined tobewithinthegroupdemandlimitbyverifying theindividual rodpositions atleastonceper12hoursexceptduringtimeintervals whentheRodPositionDeviation Monitorisinoperable, thenverifythegrouppositions atleastonceper4bourse'.1.3.1.2 Eachfulllengthrodnotfullyinsertedinthecoreshallbedetermined tobeOPERABLEbymovementofatleast8stepsinanyonedirection atleastonceper31days.4.1.3.1.3 Theallowedrodmisalignment forTHERMALPOWERgreaterthan85XofRATEDTHERMALPOWERshallbedetermined inconjunction withthemeasurement ofAPLasdefinedinSpecification 4.2.6.2.COOKNUCLEARPLANT-UNIT13/41-19AMENDMENT NO.~,446 ALLOWEDRODMISALIGNMENT ABOVES5%RTPFIGURE3.i-420STEPS19181716151413Applicable WereR=whenRcmn-JAHt-N>1.04NO%ATP12100101102103104105106107108APLCOOKNUCLEARPLANT-UNIT13/41-19bAmendment No.

REACTIVITY CONTROLSYSTEMSPOSITIONINDICATOR CHANNELSLIMITINGCONDITION FOROPERATION 3'.3.2Allshutdownandcontrolrodpositionindicator channelsandthedemandpositionindication systemshallbeOPERABLEandcapableofdetermining therodpositions withintheallowedrodmisalignment specified inSpecification 3.1.3.1.APPLICABILITY:

MODES1and2.ACTION'.Withamaximumofonerodpositionindicator channelpergroupinoperable either:1.Determine thepositionofthenon-indicating rod(s)indirectly bythemovableincoredetectors atleastonceper8hoursandimmediately afteranymotionofthenon-indicating rodwhichexceeds24stepsinonedirection sincethelastdetermination oftherod'sposition, or2.ReduceTHERMALPOWERtolessthan50XofRATEDTHERMALPOWERwithin8hours.b.Withamaximumofonedemandpositionindicator perbankinoperable either:Verifythatallrodpositionindicators fortheaffectedbankareOPERABLEandthat-themostwithdrawn rodandtheleastwithdrawn rodofthebankarewithinamaximumoftheallowedrodmisalignment ofeachother,atleastonceper8hours,or2.ReduceTHERMALPOWERtolessth'an50XofRATEDTHERMALPOWERwithin8hours.SURVEILLANCE REUIREMENTS 4.1.3.2Eachrodpositionindicator channelshallbedetermined tobeOPERABLEbyverifying thedemandpositionindication systemandtherodpositionindicator channelsagreewithintheallowedrodmisalignment atleastonceper12hoursexceptduringtimeintervals whentheRodPositionDeviation Monitorisinoperable, thencomparethedemandpositionindication systemandtherodpositionindicator, channelsatleastonceper4hours.COOKNUCLEARPLANT-UNIT13/41-20AMENDMENT NO.~

I'~

POWERDISTRIBUTION LIMITSBASES34.22and3423HEATFLUXHOTCHANNELFACTORANDNUCLEARENTHALPYRISEHOTCHANNELFACTORThelimitsonheatfluxhotchannelfactor,andnuclearenthalpyrisehotchannelfactorsensurethat1)thedesignlimitsonpeaklocalpowerdensityandminimumDNBRarenotexceededand2)intheeventofaLOCAthepeakfuelcladtemperature willnotexceedthe2200'FECCSacceptance criterialimit.Eachoftheseismeasurable, butwillnormallyonlybedetermined periodically, asspecified inSpecifications 4.2.2.1,4.2.2.2,4.2.3,4.2.6.1and4.2.6.2.Thisperiodicsurveillance issufficient toensurethatthehotchannelfactorlimitsaremaintained provided:

Controlrodsinasinglegroupmovetogetherwithnoindividual rodinsertion differing bymorethan~18stepsfromthegroupdemandposition(allowedrodmisalignment) forpowerlevelslessthanorequalto85XofRATEDTHERMALPOWER.Forpowerlevelsgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignment isfromJ12to~18steps,whichisdependent ontheAllowable PowerLevelandtheratioofF~limitat100XofRATEDTHERMALPOWERtomaximummeasuredF~asindicated inFigure3.1-4.b.Controlrodgroupsaresequenced withoverlapping groupsasdescribed inSpecification 3.1.3.5.c.Thecontrolrodinserti.on limitsofSpecifications 3.1.3.4and3.1.3.5aremaintained.

d.Theaxialpowerdistribution, expressed intermsofAXIALFLUXDIFFERENCE, ismaintained withinthelimits.Therelaxation inF~asafunctionofTHERMALPOWERallowschangesintheradialpowershapeforallpermissible rodinsertion limits.F~willbemaintained withinitslimitsasspecified intheCOLR,providedconditions (a)through(d)abovearemaintained.

WhenanF<measurement istaken,bothexperimental errorandmanufacturing tolerance mustbeallowedfor.5Xistheappropriate allowance forafullcoremaptakenwiththeincoredetectorfluxmappingsystem,and3Xistheappropriate allowance formanufacturing tolerance, WhenF~ismeasured, experimental errormustbeallowedfor,and4Xistheappropriate allowance forafullcoremaptakenwiththeincoredetection system.This4Xmeasurement uncertainty hasbeenincludedinthedesignDNBRlimitvalue.Thespecified limitforF~alsocontainsanadditional 4Xallowance foruncertainties.

Thetotalallowance isbasedonthefollowing considerations:

COOKNUCLEARPLANT-UNIT1B3/42-4AMENDMENT NO.W,420,444 REACTIVITY CONTROLSYSTEMS3413MOVABLECONTROLASSEMBLIES GROUPHEIGHTLIMITINGCONDITION FOROPERATION 3.1.3.1Allfulllength(shutdown andcontrol)rodsshallbeOPERABLEwithallindividual indicated rodpositions withintheallowedrodmisalignment oftheirgroupstepcounterdemandpositionasfollows:oforTHERMALPOWERlessthanorequalto85XofRATEDTHERMALPOWER,theallowedrodmisalignment is+18steps,andoforTHERMALPOWERgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignment is~12stepsorasdetermined fromFigure3.1-4.Figure3.1-4permitsforanallowedrodmisalignment from~13steps(forAPLequalto101%)toJ18steps(forAPLgreaterorequalto106X)providedthevalueofR(definedinFigure3.1-4)isgreaterthanorequalto1.04.APPLICABILITY:

MODES1*and2*ACTION:a.Withoneormorefulllengthrodsinoperable duetobeingimmovable asaresultofexcessive frictionormechanical interference orknowntobeuntrippable, determine thattheSHUTDOWNMARGINrequirement ofSpecification 3.1.1.1issatisfied within1hourandbeinHOTSTANDBYwithin6hours.b.Withmorethanonefulllengthrodinoperable ormisaligned fromthegroupstepcounterdemandpositionbymorethantheallowedrodmisalignment, beinHOTSTANDBYwithin6hours.c.Withonefulllengthrodinoperable duetocausesotherthanaddressed byACTIONa,above,ormisaligned fromitsgroupstepcounterdemandpositionbymorethantheallowedrodmisalignment, POWEROPERATION maycontinueprovidedthatwithinonehoureither;1.TheaffectedrodisrestoredtoOPERABLEstatuswithintheabovealignment requirements, or2.Theaffectedrodisdeclaredinoperable andtheSHUTDOWNMARGINrequirement ofSpecification 3.1.1.1issatisfied.

POWEROPERATION maythencontinueprovidedthat:a)Areevaluation ofeachaccidentanalysisofTable3.1-1isperformed within5days;thisreevaluation shallconfirmthatthepreviously analyzedresultsoftheseaccidents remainvalidforthedurationofoperation undertheseconditions, and*SeeSpecialTestExceptions 3.10.2and3.10.3COOKNUCLEARPLANT-UNIT23/41-18AMENDMENT NO.40, Jl1V REACTIVITY CONTROLSYSTEMSLIMITINGCONDITION FOROPERATION Continued b)TheSHUTDOWNMARGINrequirement ofSpecification 3.1~1.1isdetermined atleastonceper12hours,andc)Apowerdistribution mapisobtainedfromthemovableincoredetectors andF<(Z)andF~areverifiedtobewithintheirlimitswithin72hours,andd)EithertheTHERMALPOWERlevelisreducedtolessthanorequalto75XofRATEDTHERMALPOWERwithinonehourandwithinthenext4hoursthehighneutronfluxtripsetpointisreducedtolessthanorequalto85XofRATEDTHERMALPOWER,ore)Theremainder oftherodsinthegroupwiththeinoperable rodarealignedtowithintheallowedrodmisalignment oftheinoperable rodwithinonehourwhilemaintaining therodsequenceandinsertion limitsasspecified intheCOLR;theTHERMALPOWERlevelshallberestricted pursuanttoSpecification 3.1.3.6duringsubsequent operation.

SURVEILLANCE REUIREMENTS 4.1.3.1.1 Thepositionofeachfulllengthrodshallbedetermined tobewithinthegroupdemandlimitbyverifying theindividual rodpositions atleastonceper12hoursexceptduringtimeintervals whentheRodPositionDeviation Monitorisinoperable, thenverifythegrouppositions atleastonceper4hours.4.1.3.1.2 Eachfulllengthrodnotfullyinsertedinthecoreshallbedetermined tobeOPERABLEbymovementofatleast8stepsinanyonedirection atleastonceper31days.4.1.3.1.3 Theallowedrodmisalignment forTHERMALPOWERgreaterthan85XofRATED'THERMAL POWERshallbedetermined inconjunction withthemeasurement ofAPLasdefinedinSpecification 4.2.6.2.COOKNUCLEARPLANT-UNIT23/41-19AMENDMENT NO.40,407-,@RAN ALLOWEDRODMISALIGNMENT ABOVES5%RTPFIGURE3.1-420STEPS1816151413AppW1icablewhenRLTMTToFN>1.04fM%R12100101102103104105106107108APLCOOKNUCLEARPLANT"UNIT23/41-20aAmendment No.

0'ih1JA REACTIVITY CONTROLSYSTEMSPOSITIONINDICATOR CHANNELSLIMITINGCONDITION FOROPERATION 3.1.3.2Allshutdownandcontrolrodpositionindicator channelsandthedemandpositionindication systemshallbeOPERABLEandcapableofdetermining therodpositions withintheallowedrodmisalignment specified inSpecification 3.1.3.1.APPLICABILITY:

MODES1and2.ACTION:a~Withamaximumofonerodpositionindicator channelpergroupinoperable either:1.Determine thepositionofthenon-indicating rod(s)indirectly bythemovableincoredetectors atleastonceper8hoursandimmediately afteranymotionofthenon-indicating rodwhichexceeds24stepsinonedirection sincethelastdetermination oftherod'sposition, or2.ReduceTHERMALPOWERtolessthan50XofRATEDTHERMALPOWERwithin8hours.b.Withamaximumofonedemandpositionindicator perbankinoperable either:1.Verifythatallrodpositionindicators fortheaffectedbankareOPERABLEandthatthemostwithdrawn rodandtheleastwithdrawn rodofthebankarewithinamaximumoftheallowedrodmisalignment ofeachother,atleastonceper8hours,or2.ReduceTHERMALPOWERtolessthan50'fRATEDTHERMALPOWERwithin8hours.SURVEILLANCE REUIREMENTS 4.1.3.2Eachrodpositionindicator channelshallbedetermined tobeOPERABLEbyverifying thedemandpositionindication systemandtherodpositionindicator channelsagreewithintheallowedrodmisalignment atleastonceper12hoursexceptduringtimeintervals whentheRodPositionDeviation Monitorisinoperable, thencomparethedemandpositionindication systemandtherodpositionindicator channelsatleastonceper4hours.COOKNUCLEARPLANT-UNIT23/41-21AMENDMENT NO.40

POWERDISTRIBUTION LIMITSBASES342.2and34.2.3HEATFLUXHOTCHANNELFACTORANDNUCLEARENTHALPYRISEHOTCHANNELFACTOThelimitsonheatfluxhotchannelfactor,andnuclearenthalpyrisehotchannelfactorensurethat1)thedesignlimitsonpeaklocalpowerdensityandminimumDNBRarenotexceededand2)intheeventofaLOCAthepeakfuelcladtemperature willnotexceedthe2200FECCSacceptance criterialimit,Eachoftheseismeasurable butwillnormallyonlybedetermined periodically asspecified inSpecifications 4.2.2.1,4.2.2.2,4.2.3,4.2.6.1and4.2.6.2.Thisperiodicsurveillance issufficient toensurethatthelimitsaremaintained provided:

Controlrodsinasinglegroupmovetogetherwithnoindividual rodinsertion differing bymorethan~18stepsfromthegroupdemandposition(allowedrodmisalignment) forpowerlevelslessthanorequalto85XofRATEDTHERMALPOWER.Forpowerlevelsgreaterthan85XofRATEDTHERMALPOWER,theallowedrodmisalignment isfromJ12to~18steps,whichisdependent ontheAllowable PowerLevelandtheratioofF~limitat100XofRATEDTHERMALPOWERtomaximummeasuered F~asindicated inFigure3.1-4.Controlrodgroupsaresequenced withoverlapping groupsasdescribed inSpecification 3.1.3.6.Thecontrolrodinsertion limitsofSpecifications 3.1.3.5and3.1.3.6aremaintained.

Theaxialpowerdistribution, expressed intermsofAXIALFLUXDIFFERENCE, ismaintained withinthelimits.F~willbemaintained withinitslimitsasspecified intheCOLRprovidedconditions a.throughd.abovearemaintained.

Therelaxation ofF~asafunctionofTHERMALPOWERallowschangesintheradialpowershapeforallpermissible rodinsertion limits.Theformofthisrelaxation forDNBRlimitsisdiscussed inSection2.1.1ofthisbasis.WhenanF<measurement istaken,bothexperimental errorandmanufacturing tolerance mustbeallowedfor.5Xistheappropriate allowance onF<forafullcoremaptakenwiththeincoredetectorfluxmappingsystemand3Xiftheappropriate allowance formanufacturing tolerance.

COOKNUCLEARPLANT-UNIT2B3/42-4AMENDMENT NO.8R,428,434.

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