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{{#Wiki_filter:kCCE1KPATEDD1BUI3OYBEM0~STlOYSYSTEMeeREGULATORYINFORMATIONDISTRIBUTIONSYSTEM(RIDS)DOCKET0500031505000316RI+RSDD
{{#Wiki_filter:kCCE1KPATEDD1BUI3OYBEM0~STlOYSYSTEMeeREGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)DOCKET0500031505000316RI+RSDD


==SUBJECT:==
==SUBJECT:==
Application.foramendstoLicenses'PR-58&DPR-74,toclarifyresponsetimetestingrequirementsforPRNFRT.DISTRIBUTIONCODE:A001DCOPIESRECEIVED:LTRENCLSIZE:TITLE:ORSubmittal:GeneralDistributionNOTES:COPIESLTTRENCL11RECIPIENTIDCODE/NAMEPD3-1PDCOPIESLTTRENCL1155RECIPIENTIDCODE/NAMEPD3-1LASTANG,J111111111011INTERNAL:ARM/DAF/LFMBNRR/DEST/CEB8HNRR/DEST/ICSBNRR/DEST/RSB8E-ABSTRACTRElFIE'110111.1111111NRR/DEST/ADS7ENRR/DEST/ESB8DNRR/DEST/MTB9HNRR/DOEA/TSB11OGC/HDS1RES/DSIR/EIBACCESSIONNBR:8904040229DOC.DATE:89/03/29NOTARIZED:NOFACIL:50-315DonaldC.CookNuclearPowerPlant,Unit1,Indiana&50-316DonaldC.CookNuclearPowerPlant,Unit2,Indiana&AUTH.NAME.AUTHORAFFILIATIONALEXICH,M.P.IndianaMichiganPowerCo.RECIP.NAME'ECIPIENTAFFILIATIONMURLEY,T.E.DocumentControlBranch(DocumentControlDesk)EXTERNAL:LPDRNSIC1111NRCPDR11NAZEK)ALL"RIDS"RECIPIENIS'LEASEHELPUSK)REDUCEWASTE!COMI'ACZ'IHEDOCUMENTCONIBDLDESK,RDCMPl-37(EXT.20079)KOELIMINATEYOURNMEFRYDISTRIBUTIONLISTSFORDOCUHENZSYOUDON'TNEED!STOTALNUMBEROFCOPIESREQUIRED:LTTR22ENCL20 indianaMichiganPowerCompanyP.O.Box16631Coiumbus,OH43216ItlAIEMANAMCHE6'ANPWE5kAEP:NRC:1078DonaldC.CookNuclearPlantUnits1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74CLARIFICATIONOFRESPONSETIMETESTINGREQUIREMENTSFORPOWERRANGENEUTRONFLUXREACTORTRIPU.S.NuclearRegulatoryCommissionAttn:DocumentControlDeskWashington,D.C.20555Attn:T.E.Murley1March29,1989
Application.
foramendstoLicenses'PR-58
&DPR-74,to clarifyresponsetimetestingrequirements forPRNFRT.DISTRIBUTION CODE:A001DCOPIESRECEIVED:LTR ENCLSIZE:TITLE:ORSubmittal:
GeneralDistribution NOTES:COPIESLTTRENCL11RECIPIENT IDCODE/NAME PD3-1PDCOPIESLTTRENCL1155RECIPIENT IDCODE/NAME PD3-1LASTANG,J111111111011INTERNAL:
ARM/DAF/LFMB NRR/DEST/CEB 8HNRR/DEST/ICSB NRR/DEST/RSB 8E-ABSTRACT RElFIE'110111.1111111NRR/DEST/ADS 7ENRR/DEST/ESB 8DNRR/DEST/MTB 9HNRR/DOEA/TSB 11OGC/HDS1RES/DSIR/EIB ACCESSION NBR:8904040229 DOC.DATE:
89/03/29NOTARIZED:
NOFACIL:50-315 DonaldC.CookNuclearPowerPlant,Unit1,Indiana&50-316DonaldC.CookNuclearPowerPlant,Unit2,Indiana&AUTH.NAME.AUTHORAFFILIATION ALEXICH,M.P.
IndianaMichiganPowerCo.RECIP.NAME
'ECIPIENT AFFILIATION MURLEY,T.E.
DocumentControlBranch(Document ControlDesk)EXTERNAL:
LPDRNSIC1111NRCPDR11NAZEK)ALL"RIDS"RECIPIENIS'LEASE HELPUSK)REDUCEWASTE!COMI'ACZ'IHEDOCUMENTCONIBDLDESK,RDCMPl-37(EXT.20079)KOELIMINATE YOURNMEFRYDISTRIBUTION LISTSFORDOCUHENZS YOUDON'TNEED!STOTALNUMBEROFCOPIESREQUIRED:
LTTR22ENCL20 indianaMichiganPowerCompanyP.O.Box16631Coiumbus, OH43216ItlAIEMANA MCHE6'ANPWE5kAEP:NRC:1078 DonaldC.CookNuclearPlantUnits1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74CLARIFICATION OFRESPONSETIMETESTINGREQUIREMENTS FORPOWERRANGENEUTRONFLUXREACTORTRIPU.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.C.20555Attn:T.E.Murley1March29,1989


==DearDr.Murley:==
==DearDr.Murley:==
ThisletterconstitutesanapplicationforamendmenttotheTechnicalSpecifications(T/Ss)fortheDonaldC.CookNuclearPlant.Units1and2.Specificallyweareproposingtoclarifytheresponsetimetestingrequirementsforthepowerrangeneutronfluxreactortrip.Adetaileddescriptionofthechange,ourreasonsforrequestingthechange,andouranalysesconcerningsignificanthazardsarecontainedinAttachment1.Attachment2includestheproposedrevisedT/Spages.Webelievethattheproposedchangeswillnotresultin(1)asignificantchangeinthetypesofeffluentsorasignificantincreaseintheamountsofanyeffluentthatmaybereleasedoffsite,or(2)asignificantincreaseinindividualorcumulativeoccupationalradiationexposure.TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommitteeandwillbereviewedbytheNuclearSafetyandDesignReviewCommitteeattheirnextregularlyscheduledmeeting.Incompliancewiththerequirementsof10CFR50.91(b)(1),copiesofthisletteranditsattachmentshavebeentransmittedtoMr.R.C.CallenoftheMichiganPublicServiceCommissionandMr.GeorgeBruchmannoftheMichiganDepartmentofPublicHealth.S904040229S90329PDRADOCK05000315PPDCoor Dr.T.E.Murley-2-AEP'NRC:1078ThisdocumenthasbeenpreparedfollowingCorporateproceduresthatincorporateareasonablesetofcontrolstoensureitsaccuracyandcompletenesspriortosignaturebytheundersigned.Sincerely,M.P.AlichVicePresidentldpAttachmentscc:D.H.Williams,Jr.W.G~Smith,Jr.-BridgmanR.C.CallenG.CharnoffA.B.DavisNRCResidentInspector-BridgmanG.Bruchmann ATTACHMENT1TOAEP:NRC1078REASONSAND10CFR50.92ANALYSESFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICALSPECIFICATIONS Attachment1toAEP:NRC:1078Page1DescritionofChaneThisletterproposestoclarifytherequirementsofTable3.3-2,"ReactorTripSystemInstrumentationResponseTimes,"byindicatingthattherequirementsofFunctionalUnit2applytoboththehighandlowpowerrangeneutronflux(PRNF)reactortripsetpoints.BackroundandReasonsforChaneDuringareviewofourreactortripsysteminstrumentationtimeresponsetestingprocedures,itwasobservedthatthetimeresponsetestprocedureforthenuclearinstrumentationsystemPRNFreactortriponlyincludedthehighsetpointtrip.SincecreditwastakenforthelowsetpointtripinthesafetyanalysisforbothUnits1and2,thelowsetpointshouldhavebeentimeresponsetested.ItisbelievedthatthelackofspecificdetailintheT/Ssregardingtheseparatesetpointswasacontributingfactortothelackoftesting,andwearethereforesubmittingtheproposedchangesofthislettertoensurethatsufficientdetailisincludedintheT/SsforthePRNFreactortrip.JustificationforChaneThesechangesareconsideredtobeadministrativeinnatureandintendedtoclarifytheresponsetimetestingrequirementsforthePRNFreactortrip.Nooperabilityorsurveillancerequirementswillbereducedasaresultofthischange.AnalsisofSinificantHazardsPer10CFR50.92,aproposedamendmentwillnotinvolvesignificanthazardsconsiderationiftheproposedamendmentdoesnot:(1)involveasignificantincreaseintheprobabilityorconsequencesofapreviouslyevaluatedaccident,(2)createthepossibilityofanewordifferentkindofaccidentfromanypreviouslyevaluated,or(3)involveasignificantreductioninamarginofsafety.Criterion1ThischangeisintendedtoclarifytheexistingT/SrequirementsforthePRNFreactortrip,Nooperabilityorsurveillancerequirementshavebeenreduced.Wethereforebelievethechangedoesnotinvolveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyanalyzedorasignificantreductioninamarginofsafety.
Thisletterconstitutes anapplication foramendment totheTechnical Specifications (T/Ss)fortheDonaldC.CookNuclearPlant.Units1and2.Specifically weareproposing toclarifytheresponsetimetestingrequirements forthepowerrangeneutronfluxreactortrip.Adetaileddescription ofthechange,ourreasonsforrequesting thechange,andouranalysesconcerning significant hazardsarecontained inAttachment 1.Attachment 2includestheproposedrevisedT/Spages.Webelievethattheproposedchangeswillnotresultin(1)asignificant changeinthetypesofeffluents orasignificant increaseintheamountsofanyeffluentthatmaybereleasedoffsite,or(2)asignificant increaseinindividual orcumulative occupational radiation exposure.
Attachment1toAEP:NRC:1078Page2Criterion2Thechangedoesnotinvolvephysicalmodificationstotheplantorchangesinplantoperation.Thechangethereforeshouldnotcreatethepossibilityofanewordifferentkindofaccidentfromanypreviouslyanalyzedorevaluated.Criterion3SeeCriterion1above.Lastly,wenotethattheCommissionhasprovidedguidanceconcerningthedeterminationofsignificanthazardsbyprovidingcertainexamples(48FR14870)ofamendmentsconsiderednotlikelytoinvolvesignificanthazardsconsideration.Thefirstoftheseexamplesreferstochangeswhicharepurelyadministrativeinnature:forexample,changestoachieveconsistencythroughouttheT/Ss,correctionoferrors,orchangesinnomenclature.TheproposedchangeonlyclarifiesthepresentT/S.Wearenotproposingtoreduceanypresentrequirements.Forthesereasons,webelievethattheexamplecitedisapplicableandthattheproposedchangeshouldnotinvolvesignificanthazardsconsideration.  
TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommittee andwillbereviewedbytheNuclearSafetyandDesignReviewCommittee attheirnextregularly scheduled meeting.Incompliance withtherequirements of10CFR50.91(b)(1),
copiesofthisletteranditsattachments havebeentransmitted toMr.R.C.CallenoftheMichiganPublicServiceCommission andMr.GeorgeBruchmann oftheMichiganDepartment ofPublicHealth.S904040229 S90329PDRADOCK05000315PPDCoor Dr.T.E.Murley-2-AEP'NRC:1078 Thisdocumenthasbeenpreparedfollowing Corporate procedures thatincorporate areasonable setofcontrolstoensureitsaccuracyandcompleteness priortosignature bytheundersigned.
Sincerely, M.P.AlichVicePresident ldpAttachments cc:D.H.Williams, Jr.W.G~Smith,Jr.-BridgmanR.C.CallenG.CharnoffA.B.DavisNRCResidentInspector
-BridgmanG.Bruchmann ATTACHMENT 1TOAEP:NRC1078REASONSAND10CFR50.92ANALYSESFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICAL SPECIFICATIONS Attachment 1toAEP:NRC:1078 Page1DescritionofChaneThisletterproposestoclarifytherequirements ofTable3.3-2,"ReactorTripSystemInstrumentation ResponseTimes,"byindicating thattherequirements ofFunctional Unit2applytoboththehighandlowpowerrangeneutronflux(PRNF)reactortripsetpoints.
BackroundandReasonsforChaneDuringareviewofourreactortripsysteminstrumentation timeresponsetestingprocedures, itwasobservedthatthetimeresponsetestprocedure forthenuclearinstrumentation systemPRNFreactortriponlyincludedthehighsetpointtrip.SincecreditwastakenforthelowsetpointtripinthesafetyanalysisforbothUnits1and2,thelowsetpointshouldhavebeentimeresponsetested.ItisbelievedthatthelackofspecificdetailintheT/Ssregarding theseparatesetpoints wasacontributing factortothelackoftesting,andwearetherefore submitting theproposedchangesofthislettertoensurethatsufficient detailisincludedintheT/SsforthePRNFreactortrip.Justification forChaneThesechangesareconsidered tobeadministrative innatureandintendedtoclarifytheresponsetimetestingrequirements forthePRNFreactortrip.Nooperability orsurveillance requirements willbereducedasaresultofthischange.AnalsisofSinificantHazardsPer10CFR50.92,aproposedamendment willnotinvolvesignificant hazardsconsideration iftheproposedamendment doesnot:(1)involveasignificant increaseintheprobability orconsequences ofapreviously evaluated
: accident, (2)createthepossibility ofanewordifferent kindofaccidentfromanypreviously evaluated, or(3)involveasignificant reduction inamarginofsafety.Criterion 1ThischangeisintendedtoclarifytheexistingT/Srequirements forthePRNFreactortrip,Nooperability orsurveillance requirements havebeenreduced.Wetherefore believethechangedoesnotinvolveasignificant increaseintheprobability orconsequences ofanaccidentpreviously analyzedorasignificant reduction inamarginofsafety.
Attachment 1toAEP:NRC:1078 Page2Criterion 2Thechangedoesnotinvolvephysicalmodifications totheplantorchangesinplantoperation.
Thechangetherefore shouldnotcreatethepossibility ofanewordifferent kindofaccidentfromanypreviously analyzedorevaluated.
Criterion 3SeeCriterion 1above.Lastly,wenotethattheCommission hasprovidedguidanceconcerning thedetermination ofsignificant hazardsbyproviding certainexamples(48FR14870)ofamendments considered notlikelytoinvolvesignificant hazardsconsideration.
Thefirstoftheseexamplesreferstochangeswhicharepurelyadministrative innature:forexample,changestoachieveconsistency throughout theT/Ss,correction oferrors,orchangesinnomenclature.
Theproposedchangeonlyclarifies thepresentT/S.Wearenotproposing toreduceanypresentrequirements.
Forthesereasons,webelievethattheexamplecitedisapplicable andthattheproposedchangeshouldnotinvolvesignificant hazardsconsideration.  


TABLE3.3-2REACTORTRIPSYSTEMINSTRUMENTATIONRESPONSETIMESFUNCTIONALUNIT1.ManualReactorTripRESPONSETIMENOTAPPLICABLE2.PowerRange,NeutronFlux(HighandLowSetpoint)Lessthanorequalto0.5seconds3.PowerRange,NeutronFlux,HighPositiveRateNOTAPPLICABLE4.PowerRange,NeutronFlux,HighNegativeRateLessthanorequalto0.5seconds*5.IntermediateRange,NeutronFluxNOTAPPLICABLE6.SourceRange,NeutronFlux7.OvertemperaturedeltaTNOTAPPLICABLELessthanorequalto6.0seconds8.OverpowerdeltaT9.PressurizerPressure--LowNOTAPPLICABLELessthanorequalto1.0seconds10.PressurizerPressure--HighLessthanorequalto1.0seconds11.PressurizerWaterLevel--HighNOTAPPLICABLE*Neutrondetectorsareexemptfromresponsetimetesting.Responsetimeoftheneutronfluxsignalportionofthechannelshallbemeasuredfromdetectoroutputorinputoffirstelectroniccomponentinchannel.COOKNUCLEARPLANT-UNIT23/43-9AMENDMENTNO.
TABLE3.3-2REACTORTRIPSYSTEMINSTRUMENTATION RESPONSETIMESFUNCTIONAL UNIT1.ManualReactorTripRESPONSETIMENOTAPPLICABLE 2.PowerRange,NeutronFlux(HighandLowSetpoint)
Lessthanorequalto0.5seconds3.PowerRange,NeutronFlux,HighPositiveRateNOTAPPLICABLE 4.PowerRange,NeutronFlux,HighNegativeRateLessthanorequalto0.5seconds*5.Intermediate Range,NeutronFluxNOTAPPLICABLE 6.SourceRange,NeutronFlux7.Overtemperature deltaTNOTAPPLICABLE Lessthanorequalto6.0seconds8.Overpower deltaT9.Pressurizer Pressure--Low NOTAPPLICABLE Lessthanorequalto1.0seconds10.Pressurizer Pressure--High Lessthanorequalto1.0seconds11.Pressurizer WaterLevel--High NOTAPPLICABLE
*Neutrondetectors areexemptfromresponsetimetesting.Responsetimeoftheneutronfluxsignalportionofthechannelshallbemeasuredfromdetectoroutputorinputoffirstelectronic component inchannel.COOKNUCLEARPLANT-UNIT23/43-9AMENDMENT NO.
Q~~}}
Q~~}}

Revision as of 09:17, 29 June 2018

Application for Amends to Licenses DPR-58 & DPR-74, Clarifying Response Time Testing Requirements for Power Range Neutron Flux Reactor Trip
ML17325B183
Person / Time
Site: Cook  American Electric Power icon.png
Issue date: 03/29/1989
From: ALEXICH M P
INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To: MURLEY T E
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17325B184 List:
References
AEP:NRC:1078, NUDOCS 8904040229
Download: ML17325B183 (9)
v • d • e


Text

kCCE1KPATEDD1BUI3OYBEM0~STlOYSYSTEMeeREGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)DOCKET0500031505000316RI+RSDD

SUBJECT:

Application.

foramendstoLicenses'PR-58

&DPR-74,to clarifyresponsetimetestingrequirements forPRNFRT.DISTRIBUTION CODE:A001DCOPIESRECEIVED:LTR ENCLSIZE:TITLE:ORSubmittal:

GeneralDistribution NOTES:COPIESLTTRENCL11RECIPIENT IDCODE/NAME PD3-1PDCOPIESLTTRENCL1155RECIPIENT IDCODE/NAME PD3-1LASTANG,J111111111011INTERNAL:

ARM/DAF/LFMB NRR/DEST/CEB 8HNRR/DEST/ICSB NRR/DEST/RSB 8E-ABSTRACT RElFIE'110111.1111111NRR/DEST/ADS 7ENRR/DEST/ESB 8DNRR/DEST/MTB 9HNRR/DOEA/TSB 11OGC/HDS1RES/DSIR/EIB ACCESSION NBR:8904040229 DOC.DATE:

89/03/29NOTARIZED:

NOFACIL:50-315 DonaldC.CookNuclearPowerPlant,Unit1,Indiana&50-316DonaldC.CookNuclearPowerPlant,Unit2,Indiana&AUTH.NAME.AUTHORAFFILIATION ALEXICH,M.P.

IndianaMichiganPowerCo.RECIP.NAME

'ECIPIENT AFFILIATION MURLEY,T.E.

DocumentControlBranch(Document ControlDesk)EXTERNAL:

LPDRNSIC1111NRCPDR11NAZEK)ALL"RIDS"RECIPIENIS'LEASE HELPUSK)REDUCEWASTE!COMI'ACZ'IHEDOCUMENTCONIBDLDESK,RDCMPl-37(EXT.20079)KOELIMINATE YOURNMEFRYDISTRIBUTION LISTSFORDOCUHENZS YOUDON'TNEED!STOTALNUMBEROFCOPIESREQUIRED:

LTTR22ENCL20 indianaMichiganPowerCompanyP.O.Box16631Coiumbus, OH43216ItlAIEMANA MCHE6'ANPWE5kAEP:NRC:1078 DonaldC.CookNuclearPlantUnits1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74CLARIFICATION OFRESPONSETIMETESTINGREQUIREMENTS FORPOWERRANGENEUTRONFLUXREACTORTRIPU.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.C.20555Attn:T.E.Murley1March29,1989

DearDr.Murley:

Thisletterconstitutes anapplication foramendment totheTechnical Specifications (T/Ss)fortheDonaldC.CookNuclearPlant.Units1and2.Specifically weareproposing toclarifytheresponsetimetestingrequirements forthepowerrangeneutronfluxreactortrip.Adetaileddescription ofthechange,ourreasonsforrequesting thechange,andouranalysesconcerning significant hazardsarecontained inAttachment 1.Attachment 2includestheproposedrevisedT/Spages.Webelievethattheproposedchangeswillnotresultin(1)asignificant changeinthetypesofeffluents orasignificant increaseintheamountsofanyeffluentthatmaybereleasedoffsite,or(2)asignificant increaseinindividual orcumulative occupational radiation exposure.

TheseproposedchangeshavebeenreviewedbythePlantNuclearSafetyReviewCommittee andwillbereviewedbytheNuclearSafetyandDesignReviewCommittee attheirnextregularly scheduled meeting.Incompliance withtherequirements of10CFR50.91(b)(1),

copiesofthisletteranditsattachments havebeentransmitted toMr.R.C.CallenoftheMichiganPublicServiceCommission andMr.GeorgeBruchmann oftheMichiganDepartment ofPublicHealth.S904040229 S90329PDRADOCK05000315PPDCoor Dr.T.E.Murley-2-AEP'NRC:1078 Thisdocumenthasbeenpreparedfollowing Corporate procedures thatincorporate areasonable setofcontrolstoensureitsaccuracyandcompleteness priortosignature bytheundersigned.

Sincerely, M.P.AlichVicePresident ldpAttachments cc:D.H.Williams, Jr.W.G~Smith,Jr.-BridgmanR.C.CallenG.CharnoffA.B.DavisNRCResidentInspector

-BridgmanG.Bruchmann ATTACHMENT 1TOAEP:NRC1078REASONSAND10CFR50.92ANALYSESFORCHANGESTOTHEDONALDC.COOKNUCLEARPLANTUNITS1AND2TECHNICAL SPECIFICATIONS Attachment 1toAEP:NRC:1078 Page1DescritionofChaneThisletterproposestoclarifytherequirements ofTable3.3-2,"ReactorTripSystemInstrumentation ResponseTimes,"byindicating thattherequirements ofFunctional Unit2applytoboththehighandlowpowerrangeneutronflux(PRNF)reactortripsetpoints.

BackroundandReasonsforChaneDuringareviewofourreactortripsysteminstrumentation timeresponsetestingprocedures, itwasobservedthatthetimeresponsetestprocedure forthenuclearinstrumentation systemPRNFreactortriponlyincludedthehighsetpointtrip.SincecreditwastakenforthelowsetpointtripinthesafetyanalysisforbothUnits1and2,thelowsetpointshouldhavebeentimeresponsetested.ItisbelievedthatthelackofspecificdetailintheT/Ssregarding theseparatesetpoints wasacontributing factortothelackoftesting,andwearetherefore submitting theproposedchangesofthislettertoensurethatsufficient detailisincludedintheT/SsforthePRNFreactortrip.Justification forChaneThesechangesareconsidered tobeadministrative innatureandintendedtoclarifytheresponsetimetestingrequirements forthePRNFreactortrip.Nooperability orsurveillance requirements willbereducedasaresultofthischange.AnalsisofSinificantHazardsPer10CFR50.92,aproposedamendment willnotinvolvesignificant hazardsconsideration iftheproposedamendment doesnot:(1)involveasignificant increaseintheprobability orconsequences ofapreviously evaluated

accident, (2)createthepossibility ofanewordifferent kindofaccidentfromanypreviously evaluated, or(3)involveasignificant reduction inamarginofsafety.Criterion 1ThischangeisintendedtoclarifytheexistingT/Srequirements forthePRNFreactortrip,Nooperability orsurveillance requirements havebeenreduced.Wetherefore believethechangedoesnotinvolveasignificant increaseintheprobability orconsequences ofanaccidentpreviously analyzedorasignificant reduction inamarginofsafety.

Attachment 1toAEP:NRC:1078 Page2Criterion 2Thechangedoesnotinvolvephysicalmodifications totheplantorchangesinplantoperation.

Thechangetherefore shouldnotcreatethepossibility ofanewordifferent kindofaccidentfromanypreviously analyzedorevaluated.

Criterion 3SeeCriterion 1above.Lastly,wenotethattheCommission hasprovidedguidanceconcerning thedetermination ofsignificant hazardsbyproviding certainexamples(48FR14870)ofamendments considered notlikelytoinvolvesignificant hazardsconsideration.

Thefirstoftheseexamplesreferstochangeswhicharepurelyadministrative innature:forexample,changestoachieveconsistency throughout theT/Ss,correction oferrors,orchangesinnomenclature.

Theproposedchangeonlyclarifies thepresentT/S.Wearenotproposing toreduceanypresentrequirements.

Forthesereasons,webelievethattheexamplecitedisapplicable andthattheproposedchangeshouldnotinvolvesignificant hazardsconsideration.

TABLE3.3-2REACTORTRIPSYSTEMINSTRUMENTATION RESPONSETIMESFUNCTIONAL UNIT1.ManualReactorTripRESPONSETIMENOTAPPLICABLE 2.PowerRange,NeutronFlux(HighandLowSetpoint)

Lessthanorequalto0.5seconds3.PowerRange,NeutronFlux,HighPositiveRateNOTAPPLICABLE 4.PowerRange,NeutronFlux,HighNegativeRateLessthanorequalto0.5seconds*5.Intermediate Range,NeutronFluxNOTAPPLICABLE 6.SourceRange,NeutronFlux7.Overtemperature deltaTNOTAPPLICABLE Lessthanorequalto6.0seconds8.Overpower deltaT9.Pressurizer Pressure--Low NOTAPPLICABLE Lessthanorequalto1.0seconds10.Pressurizer Pressure--High Lessthanorequalto1.0seconds11.Pressurizer WaterLevel--High NOTAPPLICABLE

  • Neutrondetectors areexemptfromresponsetimetesting.Responsetimeoftheneutronfluxsignalportionofthechannelshallbemeasuredfromdetectoroutputorinputoffirstelectronic component inchannel.COOKNUCLEARPLANT-UNIT23/43-9AMENDMENT NO.

Q~~

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