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{{#Wiki_filter:CATEGORYj.REGULAT+INFORMATIONDISTRIBUTIONOZSTEM(RIDE)DISTRIBUTIONCODE:A001DCOPIESRECEIVED:LTRENCLSIZE:TITLE:ORSubmittal:GeneralDistributiontACCESS.:GN-NBR.:9603200113DOC.DATE:96/03/12NOTARIZED:YESDOCKETFACIL:50.-316DonaldC.CookNuclearPowerPlant,Unit2,IndianaM05000316AUTH.NAMEAUTHORAFFILIATIONFITZPATRICK,E.IndianaMichiganPowerCo.(formerlyIndiana&Mi'chiganEleRECIP.NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk)
{{#Wiki_filter:CATEGORYj.REGULAT+INFORMATION DISTRIBUTIONOZSTEM (RIDE)DISTRIBUTION CODE:A001DCOPIESRECEIVED:LTR ENCLSIZE:TITLE:ORSubmittal:
GeneralDistribution tACCESS.:GN
-NBR.:9603200113 DOC.DATE:
96/03/12NOTARIZED:
YESDOCKETFACIL:50.-316 DonaldC.CookNuclearPowerPlant,Unit2,IndianaM05000316AUTH.NAMEAUTHORAFFILIATION FITZPATRICK,E.
IndianaMichiganPowerCo.(formerly Indiana&Mi'chigan EleRECIP.NAME RECIPIENT AFFILIATION DocumentControlBranch(Document ControlDesk)


==SUBJECT:==
==SUBJECT:==
ApplicationforamendtolicenseDPR-74,removingTSsreshutdown6controlrodpositionindicationwhileinmodes3,4S5.NOTES:RECIPIENTIDCODE/NAMEPD3-1LAHICKMAN,JCOPIESLTTRENCL1111RECIPIENTIDCODE/NAMEPD3-1PDCOPIESLTTRENCL11INTERN.gCENTERCBNRR/DSSA/SRXBOGC/HDS2EXTERNAL:NOAC1111111011NRR/DE/EMCBNRR/DSSA/SPLBNUDOCS-ABSTRACTNRCPDR11111111NOTETOALL"RIDSNRECIPIENTS)PLEASEHELPUSTOREDUCEWASTElCONTACTTHEDOCUMENTCONTROLDESK,ROOMOWFN5D-5(EXT.415"20B3)TOELIMINATEYOURNAMEFROMDXSTRKBUTXONLXSTS"'FORDOCUMENTSYOUDON'TNEEDlTOTALNUMBEROFCOPIESREQUIRED:LTTR12ENCL.11 IndianaMichigan~PowerCompanyPOBox16631Columbus,OH43216INOlANANlCHIGANPOWERMarch12,1996AEP:NRC:1248DocketNos.:50-316U.S.NuclearRegulatoryCommissionATTN:DocumentControlDeskWashington,D.C.20555Gentlemen:DonaldC.CookNuclearPlantUnit2PROPOSEDAMENDMENTTOREMOVETECHNICALSPECIFICATIONS3.1.3.3AND3.10.5,"RODPOSITIONINDICATORCHANNELS-SHUTDOWN,"TOACHIEVECONSISTENCYWITHDONALDC.COOKNUCLEARPLANTUNIT1ANDNUREG-1431.Thisletteranditsattachmentsconstituteanapplicationforamendmenttothetechnicalspecifications(T/Ss)forDonaldC.CookNuclearPlantunit2.Specifically,weareproposingtoremovetheT/Ssrelatedtoshutdownandcontrolrodpositionindicationwhileinmodes3,4,and5.Thefollowingunit2T/Ssareaffected:3.1.3.3and3.10.5andassociatedsurveillancesandbases.TheexistingCookNuclearPlantunit2T/SsrequirethatrodpositionindicationbeOPERABLEforeachshutdownandcontrolrodnotfullyinsertedinmodes3,4,and5.IfOPERABILITYcannotbeassured,thenumberofcontrolorshutdownrodsthatcanbewithdrawnislimitedtoasinglebankwhileperformingroddroptests.Thisrequirementisoverlyrestrictivesince,duringshutdownmodes,theabilitytoensureadequateshutdownmargincanbecompensatedbyanincreaseintheboronconcentrationofthereactorcoolantsystem.Inadditiontothereductioninunnecessaryrequirements,theproposed,amendmentwouldalsoaligntheaffectedunit2T/Sswiththeunit1T/SsandtheimprovedstandardtechnicalspecificationsissuedbytheNRCasNUREG-1431,Revision1.Attachment1providesadetaileddescriptionoftheproposedchanges,thejustificationforthechanges,andourdeterminationofnosignificanthazardsconsiderationperformedpursuantto10CFR50.92.Attachment2containstheexistingT/Spagesmarked'76032001i39603i2PDRADQCK05000316PPDR00l~
Application foramendtolicenseDPR-74,removing TSsreshutdown6controlrodpositionindication whileinmodes3,4S5.NOTES:RECIPIENT IDCODE/NAME PD3-1LAHICKMAN,J COPIESLTTRENCL1111RECIPIENT IDCODE/NAME PD3-1PDCOPIESLTTRENCL11INTERN.gCENTERCBNRR/DSSA/SRXB OGC/HDS2EXTERNAL:
U.S.NuclearRegulatoryCommissionPage2AEP:NRC:1248toreflecttheproposedchanges.Attachment3containstheproposedT/Spages.Webelievetheproposedchangeswillnotresultin(1)asignificantchangeinthetypesofanyeffluentthatmaybereleasedoffsite,or(2)asignificantincreaseinindividualorcumulativeoccupationalradiationexposure.TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommitteeandwillbereviewedatthenextregularlyscheduledNuclearSafetyandDesignReviewCommitteemeeting.ItisrequestedthattheproposedamendmentbeapprovedbyApril12,1996insupportoftheupcomingunit2refueling.Incompliancewiththerequirementsof10CFR50.91(b)(1),copiesofthisletteranditsattachmentshavebeentransmittedtotheMichiganPublicServiceCommissionandtotheMichiganDepartmentofPublicHealth.ca~E.E.Fitzpatrick,VicePresidentSWORNTOANDSUBSCRIBEDBEFOREMEotaryPublicpitAttachmentcc:A.A.BlindG.CharnoffH.J.MillerNFEMSectionChiefNRCResidentInspector-BridgmanJ.R.Padgett ATTACHMENT1TOAEP:NRC:1248DESCRIPTIONANDJUSTIFICATIONOFCHANGES10CFR50.92ANALYSISFORCHANGESTOTHEDONALDCDCOOKNUCLEARPLANTUNIT2TECHNICALSPECIFICATIONS ATTACHMENTTOAEP:NRC:1248DESCRIPTIONOFCHANGESPage1Thefollowingunit2technicalspecifications(T/S)3.1.3.3and3.10.5andassociatedsurveillancesandbasesareaffectedbytheproposedchange.TS34133DeletetheReactivityControlSystems,PositionIndicatorChannels-Shutdown,LimitingConditionforOperation(3.1.3.3)andtheassociatedsurveillance(4.1.3.3)(page3/41-22).TS3410.5DeletetheSpecialTestException,PositionIndicatorChannelsShutdown,LimitingConditionforOperation(3.10.5)andtheassociatedsurveillances(4.10.5.1and4.10.5.2)(page3/410-5).Also,deletethebasesreferencetoT/S3/4.10.5,PositionIndicatorChannel-Shutdown(pageB3/410-1)IndexDeletereferenceto"PositionIndicatorChannels-Shutdown,"fromthetechnicalspecificationIndex(pageIV).II.JUSTIFICATIONFORCHANGESTheaxialpositionofshutdownrodsandcontrolrodsisdeterminedbytwoseparateandindependentsystems:thebankdemandpositionindicationsystemandtheanalogrodpositionindication(ARPI)system.Thecurrentunit2T/SsrequiretheARPIsystemtobeOPERABLEforeachshutdownandcontrolrodnotfullyinsertedinmodes3,4,and5.Tosatisfythisrequirement,twosetsofARPIcalibrationsmustbeperformed.OnecalibrationisperformedonanindividualrodbankbasistosatisfytheARPIrequirementsduringroddroptestinginaccordancewithT/S3/4.10.5.Thesecondcalibrationisperformedatthecompletionofthe"bank"calibrationsequencetoensurethattherodsarecalibratedcorrectlytoaddressbankoverlap.Thesecalibrationsareredundantandtimeintensive.Additionally,inmodes3,4,and5,theboronconcentrationinthereactorcoolantsystem(RCS)isincreasedtoensurethatadequateshutdownmargin(SDM)isachievedandmaintainedinaccordancewithexistingCookNuclearPlantT/Ss.Thecalculationusedtoobtain ATTACHMENTTOAEP:NRC:1248Page2therequiredboronconcentrationtakesintoaccounttherelativepositionofthecontrolandshutdownrods.StrictproceduralcontrolsareinplaceatCookNuclearPlanttoensurethatanallrodsoutshutdownmarginismaintainedduringrodpositionindicatorcalibration.Theadjustmentofboronconcentrationtoassureadequateshutdownmargininmodes3,4,and5isalsosupportedbytheImprovedStandardTechnicalSpecifications(ISTS)forWestinghousePlants(NUREG-1431).TheISTSdoesnotcontainaT/Sforrodpositionindicationinmodes3,4,and5;however,thebasespositionforthemodes1and2T/Ssaddresstheshutdownmodesinthefollowingmanner."InshutdownMODES,theOPERABILITYoftheshutdownandcontrolbankshasthepotentialtoaffecttherequiredSDM(shutdownmargin),butthiseffectcanbecompensatedforbyanincreaseintheboronconcentrationoftheReactorCoolantSystem."Therefore,theassurancethatadequateshutdownmarginexistsforanallrodsoutconditioninmodes3,4,and5negatestheneedforrodpositionindicationinthesemodes.Technicalspecification3.10,5isa"specialtestexception"directlytiedtoT/S3.1.3.3.Specifically,itprovidesanexemptionfromthe"positionindicatorchannel-shutdown"requirementsduringroddroptesting.Deletionofthisspecificationisnecessarysincetheprimaryspecification3.1.3.3isbeingdeleted.ItisconcludedthatthedeletionofT/S3.1.3.3,PositionIndicationChannels-Shutdown,doesnotresultinareductioninsafetyastheimpactonshutdownmarginisadequatelycompensatedforbyanincreaseinboronconcentrationthatisconsistentwiththeguidanceofNUREG-1431.III.10CFR5092CRITERIAPer10CFR50.92,thisproposedchangedoesnotinvolveasignificanthazardsconsiderationbecausethechangedoesnot:involveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated,2.createthepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated,or3.involveasignificantreductioninamarginofsafety.
NOAC1111111011NRR/DE/EMCB NRR/DSSA/SPLB NUDOCS-ABSTRACT NRCPDR11111111NOTETOALL"RIDSNRECIPIENTS
Attachment1toAEP:NRC:1248Page3Criterion1TheboronconcentrationinthereactorcoolantsystemwillbehighenoughtoassureadequateSDMinmodes3,4,and5.Thecalculationtoobtaintherequiredboronconcentrationtakesintoaccountthepositionoftherods.Shutdownmarginisassumedasaninitialconditioninthesafetyanalysis.ThesafetyanalysisestablishesaSDMthatensuresspecifiedacceptablefueldesignlimitsarenotexceeded.AslongastheSDMissatisfied,nochangeintheprobabilityorconsequencesofanaccidentpreviouslyevaluatedwillresultfromtheproposeddeletionofthe"positionindicatorshutdown"specification.ItisnotedthatthischangeisconsistentwiththenewISTSapprovedbytheNRCasNUREG-1431,Rev.l.Criterion2TheabilitytoinsertthecontrolandshutdownrodsprovidedbytherodcontrolsystemisnotaffectedbytheOPERABILITYstatusoftheARPIsystem.Asmentionedpreviously,thereactorcoolantsystemboronconcentrationwillbehighenoughtoassureadequateSDMismaintained.Therefore,itisconcludedthattheproposedchangesdonotcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.Criterion3Themarginofsafetyrequirements,arenotaffectedbytheremovalofthisT/S.TherequiredSDMwhichisaninitialconditioninthesafetyanalysis,isunaffectedsincethereactorcoolantsystemboronconcentrationisincreasedtoaddressthe.potential"allrodsout"configuration.Basedontheseconsiderations,itisconcludedthattheproposedchangesdonot'involveasignificantreductioninamarginofsafety.}}
)PLEASEHELPUSTOREDUCEWASTElCONTACTTHEDOCUMENTCONTROLDESK,ROOMOWFN5D-5(EXT.
415"20B3)
TOELIMINATE YOURNAMEFROMDXSTRKBUTXON LXSTS"'FORDOCUMENTS YOUDON'TNEEDlTOTALNUMBEROFCOPIESREQUIRED:
LTTR12ENCL.11 IndianaMichigan~PowerCompanyPOBox16631Columbus, OH43216INOlANANlCHIGANPOWERMarch12,1996AEP:NRC:1248 DocketNos.:50-316U.S.NuclearRegulatory Commission ATTN:DocumentControlDeskWashington, D.C.20555Gentlemen:
DonaldC.CookNuclearPlantUnit2PROPOSEDAMENDMENT TOREMOVETECHNICAL SPECIFICATIONS 3.1.3.3AND3.10.5,"RODPOSITIONINDICATOR CHANNELS-SHUTDOWN,"
TOACHIEVECONSISTENCY WITHDONALDC.COOKNUCLEARPLANTUNIT1ANDNUREG-1431.Thisletteranditsattachments constitute anapplication foramendment tothetechnical specifications (T/Ss)forDonaldC.CookNuclearPlantunit2.Specifically, weareproposing toremovetheT/Ssrelatedtoshutdownandcontrolrodpositionindication whileinmodes3,4,and5.Thefollowing unit2T/Ssareaffected:
3.1.3.3and3.10.5andassociated surveillances andbases.TheexistingCookNuclearPlantunit2T/Ssrequirethatrodpositionindication beOPERABLEforeachshutdownandcontrolrodnotfullyinsertedinmodes3,4,and5.IfOPERABILITY cannotbeassured,thenumberofcontrolorshutdownrodsthatcanbewithdrawn islimitedtoasinglebankwhileperforming roddroptests.Thisrequirement isoverlyrestrictive since,duringshutdownmodes,theabilitytoensureadequateshutdownmargincanbecompensated byanincreaseintheboronconcentration ofthereactorcoolantsystem.Inadditiontothereduction inunnecessary requirements, theproposed, amendment wouldalsoaligntheaffectedunit2T/Sswiththeunit1T/Ssandtheimprovedstandardtechnical specifications issuedbytheNRCasNUREG-1431, Revision1.Attachment 1providesadetaileddescription oftheproposedchanges,thejustification forthechanges,andourdetermination ofnosignificant hazardsconsideration performed pursuantto10CFR50.92.Attachment 2containstheexistingT/Spagesmarked'76032001i3 9603i2PDRADQCK05000316PPDR00l~
U.S.NuclearRegulatory Commission Page2AEP:NRC:1248 toreflecttheproposedchanges.Attachment 3containstheproposedT/Spages.Webelievetheproposedchangeswillnotresultin(1)asignificant changeinthetypesofanyeffluentthatmaybereleasedoffsite,or(2)asignificant increaseinindividual orcumulative occupational radiation exposure.
TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommittee andwillbereviewedatthenextregularly scheduled NuclearSafetyandDesignReviewCommittee meeting.Itisrequested thattheproposedamendment beapprovedbyApril12,1996insupportoftheupcomingunit2refueling.
Incompliance withtherequirements of10CFR50.91(b)(1),
copiesofthisletteranditsattachments havebeentransmitted totheMichiganPublicServiceCommission andtotheMichiganDepartment ofPublicHealth.ca~E.E.Fitzpatrick
,VicePresident SWORNTOANDSUBSCRIBED BEFOREMEotaryPublicpitAttachment cc:A.A.BlindG.CharnoffH.J.MillerNFEMSectionChiefNRCResidentInspector
-BridgmanJ.R.Padgett ATTACHMENT 1TOAEP:NRC:1248 DESCRIPTION ANDJUSTIFICATION OFCHANGES10CFR50.92ANALYSISFORCHANGESTOTHEDONALDCDCOOKNUCLEARPLANTUNIT2TECHNICAL SPECIFICATIONS ATTACHMENT TOAEP:NRC:1248 DESCRIPTION OFCHANGESPage1Thefollowing unit2technical specifications (T/S)3.1.3.3and3.10.5andassociated surveillances andbasesareaffectedbytheproposedchange.TS34133DeletetheReactivity ControlSystems,PositionIndicator Channels-Shutdown, LimitingCondition forOperation (3.1.3.3) andtheassociated surveillance (4.1.3.3)
(page3/41-22).TS3410.5DeletetheSpecialTestException, PositionIndicator ChannelsShutdown, LimitingCondition forOperation (3.10.5)andtheassociated surveillances (4.10.5.1 and4.10.5.2)
(page3/410-5).Also,deletethebasesreference toT/S3/4.10.5, PositionIndicator Channel-Shutdown(pageB3/410-1)IndexDeletereference to"Position Indicator Channels-Shutdown,"
fromthetechnical specification Index(pageIV).II.JUSTIFICATION FORCHANGESTheaxialpositionofshutdownrodsandcontrolrodsisdetermined bytwoseparateandindependent systems:thebankdemandpositionindication systemandtheanalogrodpositionindication (ARPI)system.Thecurrentunit2T/SsrequiretheARPIsystemtobeOPERABLEforeachshutdownandcontrolrodnotfullyinsertedinmodes3,4,and5.Tosatisfythisrequirement, twosetsofARPIcalibrations mustbeperformed.
Onecalibration isperformed onanindividual rodbankbasistosatisfytheARPIrequirements duringroddroptestinginaccordance withT/S3/4.10.5.
Thesecondcalibration isperformed atthecompletion ofthe"bank"calibration sequencetoensurethattherodsarecalibrated correctly toaddressbankoverlap.Thesecalibrations areredundant andtimeintensive.
Additionally, inmodes3,4,and5,theboronconcentration inthereactorcoolantsystem(RCS)isincreased toensurethatadequateshutdownmargin(SDM)isachievedandmaintained inaccordance withexistingCookNuclearPlantT/Ss.Thecalculation usedtoobtain ATTACHMENT TOAEP:NRC:1248 Page2therequiredboronconcentration takesintoaccounttherelativepositionofthecontrolandshutdownrods.Strictprocedural controlsareinplaceatCookNuclearPlanttoensurethatanallrodsoutshutdownmarginismaintained duringrodpositionindicator calibration.
Theadjustment ofboronconcentration toassureadequateshutdownmargininmodes3,4,and5isalsosupported bytheImprovedStandardTechnical Specifications (ISTS)forWestinghouse Plants(NUREG-1431).
TheISTSdoesnotcontainaT/Sforrodpositionindication inmodes3,4,and5;however,thebasespositionforthemodes1and2T/Ssaddresstheshutdownmodesinthefollowing manner."InshutdownMODES,theOPERABILITY oftheshutdownandcontrolbankshasthepotential toaffecttherequiredSDM(shutdown margin),butthiseffectcanbecompensated forbyanincreaseintheboronconcentration oftheReactorCoolantSystem."Therefore, theassurance thatadequateshutdownmarginexistsforanallrodsoutcondition inmodes3,4,and5negatestheneedforrodpositionindication inthesemodes.Technical specification 3.10,5isa"specialtestexception" directlytiedtoT/S3.1.3.3.Specifically, itprovidesanexemption fromthe"position indicator channel-shutdown" requirements duringroddroptesting.Deletionofthisspecification isnecessary sincetheprimaryspecification 3.1.3.3isbeingdeleted.Itisconcluded thatthedeletionofT/S3.1.3.3,PositionIndication Channels-Shutdown, doesnotresultinareduction insafetyastheimpactonshutdownmarginisadequately compensated forbyanincreaseinboronconcentration thatisconsistent withtheguidanceofNUREG-1431.III.10CFR5092CRITERIAPer10CFR50.92,thisproposedchangedoesnotinvolveasignificant hazardsconsideration becausethechangedoesnot:involveasignificant increaseintheprobability orconsequences ofanaccidentpreviously evaluated, 2.createthepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated, or3.involveasignificant reduction inamarginofsafety.
Attachment 1toAEP:NRC:1248 Page3Criterion 1Theboronconcentration inthereactorcoolantsystemwillbehighenoughtoassureadequateSDMinmodes3,4,and5.Thecalculation toobtaintherequiredboronconcentration takesintoaccountthepositionoftherods.Shutdownmarginisassumedasaninitialcondition inthesafetyanalysis.
Thesafetyanalysisestablishes aSDMthatensuresspecified acceptable fueldesignlimitsarenotexceeded.
AslongastheSDMissatisfied, nochangeintheprobability orconsequences ofanaccidentpreviously evaluated willresultfromtheproposeddeletionofthe"position indicator shutdown" specification.
Itisnotedthatthischangeisconsistent withthenewISTSapprovedbytheNRCasNUREG-1431, Rev.l.Criterion 2TheabilitytoinsertthecontrolandshutdownrodsprovidedbytherodcontrolsystemisnotaffectedbytheOPERABILITY statusoftheARPIsystem.Asmentioned previously, thereactorcoolantsystemboronconcentration willbehighenoughtoassureadequateSDMismaintained.
Therefore, itisconcluded thattheproposedchangesdonotcreatethepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated.
Criterion 3Themarginofsafetyrequirements, arenotaffectedbytheremovalofthisT/S.TherequiredSDMwhichisaninitialcondition inthesafetyanalysis, isunaffected sincethereactorcoolantsystemboronconcentration isincreased toaddressthe.potential "allrodsout"configuration.
Basedontheseconsiderations, itisconcluded thattheproposedchangesdonot'involve asignificant reduction inamarginofsafety.}}

Revision as of 06:54, 29 June 2018

Application for Amend to License DPR-74,removing TSs Re Shutdown & Control Rod Position Indication While in Modes 3, 4 & 5
ML17333A355
Person / Time
Site: Cook American Electric Power icon.png
Issue date: 03/12/1996
From: FITZPATRICK E
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17333A356 List:
References
AEP:NRC:1248, NUDOCS 9603200113
Download: ML17333A355 (7)
v • d • e


Text

CATEGORYj.REGULAT+INFORMATION DISTRIBUTIONOZSTEM (RIDE)DISTRIBUTION CODE:A001DCOPIESRECEIVED:LTR ENCLSIZE:TITLE:ORSubmittal:

GeneralDistribution tACCESS.:GN

-NBR.:9603200113 DOC.DATE:

96/03/12NOTARIZED:

YESDOCKETFACIL:50.-316 DonaldC.CookNuclearPowerPlant,Unit2,IndianaM05000316AUTH.NAMEAUTHORAFFILIATION FITZPATRICK,E.

IndianaMichiganPowerCo.(formerly Indiana&Mi'chigan EleRECIP.NAME RECIPIENT AFFILIATION DocumentControlBranch(Document ControlDesk)

SUBJECT:

Application foramendtolicenseDPR-74,removing TSsreshutdown6controlrodpositionindication whileinmodes3,4S5.NOTES:RECIPIENT IDCODE/NAME PD3-1LAHICKMAN,J COPIESLTTRENCL1111RECIPIENT IDCODE/NAME PD3-1PDCOPIESLTTRENCL11INTERN.gCENTERCBNRR/DSSA/SRXB OGC/HDS2EXTERNAL:

NOAC1111111011NRR/DE/EMCB NRR/DSSA/SPLB NUDOCS-ABSTRACT NRCPDR11111111NOTETOALL"RIDSNRECIPIENTS

)PLEASEHELPUSTOREDUCEWASTElCONTACTTHEDOCUMENTCONTROLDESK,ROOMOWFN5D-5(EXT.

415"20B3)

TOELIMINATE YOURNAMEFROMDXSTRKBUTXON LXSTS"'FORDOCUMENTS YOUDON'TNEEDlTOTALNUMBEROFCOPIESREQUIRED:

LTTR12ENCL.11 IndianaMichigan~PowerCompanyPOBox16631Columbus, OH43216INOlANANlCHIGANPOWERMarch12,1996AEP:NRC:1248 DocketNos.:50-316U.S.NuclearRegulatory Commission ATTN:DocumentControlDeskWashington, D.C.20555Gentlemen:

DonaldC.CookNuclearPlantUnit2PROPOSEDAMENDMENT TOREMOVETECHNICAL SPECIFICATIONS 3.1.3.3AND3.10.5,"RODPOSITIONINDICATOR CHANNELS-SHUTDOWN,"

TOACHIEVECONSISTENCY WITHDONALDC.COOKNUCLEARPLANTUNIT1ANDNUREG-1431.Thisletteranditsattachments constitute anapplication foramendment tothetechnical specifications (T/Ss)forDonaldC.CookNuclearPlantunit2.Specifically, weareproposing toremovetheT/Ssrelatedtoshutdownandcontrolrodpositionindication whileinmodes3,4,and5.Thefollowing unit2T/Ssareaffected:

3.1.3.3and3.10.5andassociated surveillances andbases.TheexistingCookNuclearPlantunit2T/Ssrequirethatrodpositionindication beOPERABLEforeachshutdownandcontrolrodnotfullyinsertedinmodes3,4,and5.IfOPERABILITY cannotbeassured,thenumberofcontrolorshutdownrodsthatcanbewithdrawn islimitedtoasinglebankwhileperforming roddroptests.Thisrequirement isoverlyrestrictive since,duringshutdownmodes,theabilitytoensureadequateshutdownmargincanbecompensated byanincreaseintheboronconcentration ofthereactorcoolantsystem.Inadditiontothereduction inunnecessary requirements, theproposed, amendment wouldalsoaligntheaffectedunit2T/Sswiththeunit1T/Ssandtheimprovedstandardtechnical specifications issuedbytheNRCasNUREG-1431, Revision1.Attachment 1providesadetaileddescription oftheproposedchanges,thejustification forthechanges,andourdetermination ofnosignificant hazardsconsideration performed pursuantto10CFR50.92.Attachment 2containstheexistingT/Spagesmarked'76032001i3 9603i2PDRADQCK05000316PPDR00l~

U.S.NuclearRegulatory Commission Page2AEP:NRC:1248 toreflecttheproposedchanges.Attachment 3containstheproposedT/Spages.Webelievetheproposedchangeswillnotresultin(1)asignificant changeinthetypesofanyeffluentthatmaybereleasedoffsite,or(2)asignificant increaseinindividual orcumulative occupational radiation exposure.

TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommittee andwillbereviewedatthenextregularly scheduled NuclearSafetyandDesignReviewCommittee meeting.Itisrequested thattheproposedamendment beapprovedbyApril12,1996insupportoftheupcomingunit2refueling.

Incompliance withtherequirements of10CFR50.91(b)(1),

copiesofthisletteranditsattachments havebeentransmitted totheMichiganPublicServiceCommission andtotheMichiganDepartment ofPublicHealth.ca~E.E.Fitzpatrick

,VicePresident SWORNTOANDSUBSCRIBED BEFOREMEotaryPublicpitAttachment cc:A.A.BlindG.CharnoffH.J.MillerNFEMSectionChiefNRCResidentInspector

-BridgmanJ.R.Padgett ATTACHMENT 1TOAEP:NRC:1248 DESCRIPTION ANDJUSTIFICATION OFCHANGES10CFR50.92ANALYSISFORCHANGESTOTHEDONALDCDCOOKNUCLEARPLANTUNIT2TECHNICAL SPECIFICATIONS ATTACHMENT TOAEP:NRC:1248 DESCRIPTION OFCHANGESPage1Thefollowing unit2technical specifications (T/S)3.1.3.3and3.10.5andassociated surveillances andbasesareaffectedbytheproposedchange.TS34133DeletetheReactivity ControlSystems,PositionIndicator Channels-Shutdown, LimitingCondition forOperation (3.1.3.3) andtheassociated surveillance (4.1.3.3)

(page3/41-22).TS3410.5DeletetheSpecialTestException, PositionIndicator ChannelsShutdown, LimitingCondition forOperation (3.10.5)andtheassociated surveillances (4.10.5.1 and4.10.5.2)

(page3/410-5).Also,deletethebasesreference toT/S3/4.10.5, PositionIndicator Channel-Shutdown(pageB3/410-1)IndexDeletereference to"Position Indicator Channels-Shutdown,"

fromthetechnical specification Index(pageIV).II.JUSTIFICATION FORCHANGESTheaxialpositionofshutdownrodsandcontrolrodsisdetermined bytwoseparateandindependent systems:thebankdemandpositionindication systemandtheanalogrodpositionindication (ARPI)system.Thecurrentunit2T/SsrequiretheARPIsystemtobeOPERABLEforeachshutdownandcontrolrodnotfullyinsertedinmodes3,4,and5.Tosatisfythisrequirement, twosetsofARPIcalibrations mustbeperformed.

Onecalibration isperformed onanindividual rodbankbasistosatisfytheARPIrequirements duringroddroptestinginaccordance withT/S3/4.10.5.

Thesecondcalibration isperformed atthecompletion ofthe"bank"calibration sequencetoensurethattherodsarecalibrated correctly toaddressbankoverlap.Thesecalibrations areredundant andtimeintensive.

Additionally, inmodes3,4,and5,theboronconcentration inthereactorcoolantsystem(RCS)isincreased toensurethatadequateshutdownmargin(SDM)isachievedandmaintained inaccordance withexistingCookNuclearPlantT/Ss.Thecalculation usedtoobtain ATTACHMENT TOAEP:NRC:1248 Page2therequiredboronconcentration takesintoaccounttherelativepositionofthecontrolandshutdownrods.Strictprocedural controlsareinplaceatCookNuclearPlanttoensurethatanallrodsoutshutdownmarginismaintained duringrodpositionindicator calibration.

Theadjustment ofboronconcentration toassureadequateshutdownmargininmodes3,4,and5isalsosupported bytheImprovedStandardTechnical Specifications (ISTS)forWestinghouse Plants(NUREG-1431).

TheISTSdoesnotcontainaT/Sforrodpositionindication inmodes3,4,and5;however,thebasespositionforthemodes1and2T/Ssaddresstheshutdownmodesinthefollowing manner."InshutdownMODES,theOPERABILITY oftheshutdownandcontrolbankshasthepotential toaffecttherequiredSDM(shutdown margin),butthiseffectcanbecompensated forbyanincreaseintheboronconcentration oftheReactorCoolantSystem."Therefore, theassurance thatadequateshutdownmarginexistsforanallrodsoutcondition inmodes3,4,and5negatestheneedforrodpositionindication inthesemodes.Technical specification 3.10,5isa"specialtestexception" directlytiedtoT/S3.1.3.3.Specifically, itprovidesanexemption fromthe"position indicator channel-shutdown" requirements duringroddroptesting.Deletionofthisspecification isnecessary sincetheprimaryspecification 3.1.3.3isbeingdeleted.Itisconcluded thatthedeletionofT/S3.1.3.3,PositionIndication Channels-Shutdown, doesnotresultinareduction insafetyastheimpactonshutdownmarginisadequately compensated forbyanincreaseinboronconcentration thatisconsistent withtheguidanceofNUREG-1431.III.10CFR5092CRITERIAPer10CFR50.92,thisproposedchangedoesnotinvolveasignificant hazardsconsideration becausethechangedoesnot:involveasignificant increaseintheprobability orconsequences ofanaccidentpreviously evaluated, 2.createthepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated, or3.involveasignificant reduction inamarginofsafety.

Attachment 1toAEP:NRC:1248 Page3Criterion 1Theboronconcentration inthereactorcoolantsystemwillbehighenoughtoassureadequateSDMinmodes3,4,and5.Thecalculation toobtaintherequiredboronconcentration takesintoaccountthepositionoftherods.Shutdownmarginisassumedasaninitialcondition inthesafetyanalysis.

Thesafetyanalysisestablishes aSDMthatensuresspecified acceptable fueldesignlimitsarenotexceeded.

AslongastheSDMissatisfied, nochangeintheprobability orconsequences ofanaccidentpreviously evaluated willresultfromtheproposeddeletionofthe"position indicator shutdown" specification.

Itisnotedthatthischangeisconsistent withthenewISTSapprovedbytheNRCasNUREG-1431, Rev.l.Criterion 2TheabilitytoinsertthecontrolandshutdownrodsprovidedbytherodcontrolsystemisnotaffectedbytheOPERABILITY statusoftheARPIsystem.Asmentioned previously, thereactorcoolantsystemboronconcentration willbehighenoughtoassureadequateSDMismaintained.

Therefore, itisconcluded thattheproposedchangesdonotcreatethepossibility ofanewordifferent kindofaccidentfromanyaccidentpreviously evaluated.

Criterion 3Themarginofsafetyrequirements, arenotaffectedbytheremovalofthisT/S.TherequiredSDMwhichisaninitialcondition inthesafetyanalysis, isunaffected sincethereactorcoolantsystemboronconcentration isincreased toaddressthe.potential "allrodsout"configuration.

Basedontheseconsiderations, itisconcluded thattheproposedchangesdonot'involve asignificant reduction inamarginofsafety.

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