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{{#Wiki_filter:'/eREQULAT' | {{#Wiki_filter:'/eREQULAT'NFORMATION DISTRIBUTION STEM(RIDS)ACCESSION NOR:870'7210518 | ||
'OC.DATE:87/09/14NOTARIZED:NODOCKET0FAClL:,50-316 DonaldC.CookNuclearPowerPlantUnit2iIndianaZc05000316AUTH.NAMEAUTHORAFFILIATION ALEXICH>M.P.Indiana5MichiganElectricCo.RECIP.NAMERECIPIENT AFFILIATION MURLEY>T.E.NRC-NoDetailedAffiliation Given | |||
==SUBJECT:== | ==SUBJECT:== | ||
Informsofutilintenttochangedesignoflowertieplateinfuelassemblies. | Informsofutilintenttochangedesignoflowertieplateinfuelassemblies. | ||
AdvancedNuclearFuelsCorpfuelassemblies willbeinstalled duringCycle2reload.Assemblies incorporate debris-resistant tieplate.DISTRIBUTION CODE:A001DCOPIEBRECEIVED: | |||
LTRENCLSIZE:TITLE:ORSubmittal: | |||
GeneralDistribution NOTES:RECIPIENTIDCODE/NAME PD3-3L*MIGGINGTONz DINTERNAL: | |||
ARM/DAF/LFMB NRR/DEBT/CEB NRR/DEBT/RBB B/ILRBREQFILE01EXTERNAL'QM HRUSKEiSNRCPDRCOPIESLTTRENCL1011101111111111HAECIPIENTIDCODE/NAME PD3-3PDNRR/DEST/ADB NRR/DEBT/MTB NRR/DOEA/TSB OQC/HDS1REB/DE/EIH LPDRNBICCOPIESLTTRENCL551111011vlggg4I5$TOTALNUMBEROFCOPIESREQUIRED: | |||
LTTR21ENCL18 II)'1I(+~%~'~v'~I'I't~q~~)~!F~J;NN INDIANA&MICHIGANELECTRICCOMPANYP.O.BOX16631COLUMBUS, OHIO43216September 14,1987AEP'NRC:1035 DonaldC.CookNuclearPlantUnit2DocketNo.50-316LicenseNo.DPR-74UNIT2CYCLE7RELOAD:CHANGESTOLOWERTIEPLATEDESIGNU.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.C.20555Attn:T.E.Murley | |||
==DearDr.Murley:== | ==DearDr.Murley:== | ||
Thepurposeofthisletteristoinformyouofourintenttomakeachangetothedesignofthelowertieplateinthefuelassemblies whichwillbefabricated byAdvancedNuclearFuelsCorporation (ANF)fortheupcomingD.C.CookUnit2Cycle7reload.D.C.CookUnit2Cycle7isscheduled tobeginoperation inJune1989.Thereloadwillconsistof80assemblies suppliedbyANF.Theassemblies willincorporate adebris-resistant lowertieplateinthefuelassemblydesigntoprovideprotection fortheassemblies intheunlikelyeventthatdebrisispresentintheprimarycoolantsystem.Thenewlowertieplateisspecifically designedtoentrapdebrisofthesizewhichwouldbeexpectedtobecomeentrapped inthefuelassemblyspacers.Unit2Cycle7willbeprecededbyanextendedoutagetoreplaceallfoursteamgenerators. | |||
(,C1 Dr.T.E.Murley-2-AEP:NRC: | Althoughextremecautionwillbeexercised duringthisoutagetopreventdebrisfromenteringtheprimarycoolantsystem,therevisedlowertieplatedesignisconsidered additional protection againstfueldamage.Asafetyreviewoftherevisedlowertieplatedesignhasbeenperformed byANFandisincludedasanattachment tothisletter.Thisreviewconcluded thatthereviseddesigndoesnotconstitute anunreviewed safetyquestionasdefinedin10CFR50.59.Thisconclusion wasbasedonpressuredropdataobtainedexperimentally byANF.Theseexperiments demonstrated thatthepressuredropfortherevisedlowertieplatedesignwaslessthan0.5%higherthanthepresentdesign.Thisdifference wasconsidered exceedingly smallandisboundedbytheassumptions ofthecurrentD.C.CookUnit2Cycle6safetyanalysesperformed byANF.po9~~>>88709''ePDRADQCK05000316P",."''".PDRJ | ||
. | (,C1 Dr.T.E.Murley-2-AEP:NRC:1035 SincetheD.C.CookUnit:2Cycle7reloadwillbeverysimilartothepresentCycle6reload,thecurrentplansforCycle7aretoreviewthereloadinhouseundertheprovisions of10CFR50.59,ratherthanseekformalNRCreview.Sincethesafetyreviewoftherevisedlowertieplatedesignconcluded thattherearenounreviewed safetyquestions associated withthedesignchange,theplanstoreviewthereloadundertheprovisions of10CFR50.59areunaltered. | ||
However,becausetheCycle7fuelwilldifferindesignfromthatpreviously reviewedbytheNRC,wehavedecidedasacourtesytoinformyouofthechangeandtosolicityourcomments. | |||
Asstatedabove,the10CFR50.59safetyevaluation performed byANFisattachedtothisletter;inaddition, ANFhastransmitted toyou,viatheirletterDAA:014:87, datedAugust25,1987,acopyoftheirreportANF-87-91, "D.C.Cook2Debris-Resistant LowerTiePlatePressureDropTestReport."ANFisscheduled tobeginfabrication oftheCycle7reloadfuelbyOctober13,1987.Therefore, werequestthatyouinformusofanycommentsyouhaveonthenewlowertieplatedesignbySeptember 30,1987,sothatwedonotriskdisruption ofthefabrication schedule. | |||
Pursuanttotherequirements of10CFR170.12(c), | |||
wehaveenclosedanapplication feeof$150.00.Thisdocumenthasbeenpreparedfollowing Corporate procedures whichincorporate areasonable setofcontrolstoinsureitsaccuracyandcompleteness priortosignature bytheundersigned. | |||
Verytrulyyours,M.P.AlichVicePresident cmAttachment cc:JohnE.DolanV.G.Smith,Jr.-BridgmanG.Bruchmann R.C.CallenG.CharnoffNRCResidentInspector | |||
-BridgmanA.B.Davis-RegionIII Attachment toAEP:NRC:1035 AdvancedNuclearFuelsSafetyEvaluation ofRevisedLowerTiePlateDesign | |||
.ADyANCED NUCLEARFUELSCQRPORATION | |||
;0!HORNRAPIDSROAD.POBOX130,RICHL4PID, WA993524130 is09i3rsei00TELEx:Ie2ereJuly30,1987ANF-AEP/0597 FUELENGINEERING 4TECHNICAL SERVICESIndiana5MichiganElectricCompanyc/oMr.ThomasGeorgantis | |||
: Engineer, NuclearMaterials 3FuelManagement AmericanElectricPowerServiceCorp.OneRiverside Plaza,20thFloorColumbus, OH43216-6631 | |||
==Reference:== | ==Reference:== | ||
ANF-87-91(P),"Debris- | |||
ANF-87-91(P), | |||
"Debris-Resistant LowerTiePlatePressureDropTestReport,"AdvancedNuclearFuelsCorp.,July1987 | |||
==DearHr.Georgantis:== | ==DearHr.Georgantis:== | ||
AtAEP'srequest,AdvancedNuclearFuels(ANF) | |||
AtAEP'srequest,AdvancedNuclearFuels(ANF)hasincorporated adebris-resistant lowertieplate(LTP)inthefuelassemblydesignasaprecaution againsttheunlikelyeventofdebrisbeingpresentintheprimarycoolantsystem.Thedebris-resistant LTPhasbeendesignedtoreducethepossibility ofdebrisenteringthefueledregionofthefuelassemblyfromtheprimarycoolantsystem.Specifically, itisdesignedtoentrapdebrisof*thesizewhichwouldbeexpectedtobecomeentrapped inthefuelassemblyspacers.Thisisanimprovement overthecurrentLTPdesigninthatitwillaidintheprevention offuelrodfailuresassociated withdebrisbecomingentrapped inthefuelassemblyspacersandproducing failuresduetofretting. | |||
Further,entrapping debrisintheLTPinsteadofinaspacerwillprovidemoretimefortheflowtorecoverduetocrossflowaffectsbeforereachingtheHONBRregion,Areviewofthepressuredropinformation providedinReference (1)indicates thattheunchamfered debris-resistant LTPproposedforD.C.CookUnit2hasessentially thesamepressuredropasthecurrentLTP.Thatis,lessthana0.5%difference wasobservedinthetestdataobtainedbetweenthecurrentLTPandtheprcposedunchamfered debris-resistant LTP.Sincethisdifference isexceedingly small,itwillproduceonlyaveryminorinletflowperturbation. | |||
Thisminorinletflowperturbation wouldbeexpectedtodisappear duetocrossfloweffectspriortoreachingtheaxiallocationatwhichHONBRwouldoccur.Further,thecurrentHONBRanalysisperformed for0,C.CookUnit2assumeda5%inletflowmaldistribution forthehotchannelwhichissignificantly largerthantheinletflowmaldistribution whichwouldbeexpectedfromtheLTPchange.Basedonthis,itisconcluded thattheCycle6safetyanalysiswillcovertheplantconditions expectedtooccurasaresultoftheLTPchange.Thus,AdvancedNuclearFuels(ANF)hasconcluded thattheresultspresented intheCycle6Disposition ofEventsandsafetyanalysisreportsarenotaffectedbythechangeinLTPandthatthesereportswillremainapplicable tofuture T.Georgantis (AEP)July30,1987ANF-AEP/0597 cycleswiththeunchamfered debris-resistant LTP.Consequently, ANFconcludes thatthesubstitution oftheunchamfered debris-resistant LTPforthecurrentD.C,CookUnit2LTP:(I)Doesnotinvolveasignificant increaseintheprobability ofoccurrence ortheconsequences ofanaccidentpreviously evaluated inthesafetyanalysisreports(2)Doesnotcreatethepossibility foranaccidentormalfunction ofadifferent typethananyevaluated previously inthesafetyanalysisreport.(3)Doesnotinvolveasignificant reduction inthemarginofsafetyasdefinedinthebasesforthetechnical specifications. | |||
Therefore, ANFconcludes thatthesubstitution oftheunchamfered debris-resistant LTPforthecurrentLTPdoesnotinvolveanunreviewed safetyissueasdefinedin10CFR50.59.Noadditional analysesarerequiredinsupportofthisfinding.Ifyouhaveanyquestions orcommentsregarding theabove,pleasefeelfreetocontactus.cc:J.M.Cleveland DH.Malin~V.VanderBurg Sincerely, | |||
.r.-..g'-wŽ'aryN.Ward,ManagerReloadLicensing}} | |||
Revision as of 09:26, 29 June 2018
| ML17325A297 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 09/14/1987 |
| From: | ALEXICH M P INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | MURLEY T E NRC, NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| AEP:NRC:1035, NUDOCS 8709210518 | |
| Download: ML17325A297 (8) | |
Text
'/eREQULAT'NFORMATION DISTRIBUTION STEM(RIDS)ACCESSION NOR:870'7210518
'OC.DATE:87/09/14NOTARIZED:NODOCKET0FAClL:,50-316 DonaldC.CookNuclearPowerPlantUnit2iIndianaZc05000316AUTH.NAMEAUTHORAFFILIATION ALEXICH>M.P.Indiana5MichiganElectricCo.RECIP.NAMERECIPIENT AFFILIATION MURLEY>T.E.NRC-NoDetailedAffiliation Given
SUBJECT:
Informsofutilintenttochangedesignoflowertieplateinfuelassemblies.
AdvancedNuclearFuelsCorpfuelassemblies willbeinstalled duringCycle2reload.Assemblies incorporate debris-resistant tieplate.DISTRIBUTION CODE:A001DCOPIEBRECEIVED:
LTRENCLSIZE:TITLE:ORSubmittal:
GeneralDistribution NOTES:RECIPIENTIDCODE/NAME PD3-3L*MIGGINGTONz DINTERNAL:
ARM/DAF/LFMB NRR/DEBT/CEB NRR/DEBT/RBB B/ILRBREQFILE01EXTERNAL'QM HRUSKEiSNRCPDRCOPIESLTTRENCL1011101111111111HAECIPIENTIDCODE/NAME PD3-3PDNRR/DEST/ADB NRR/DEBT/MTB NRR/DOEA/TSB OQC/HDS1REB/DE/EIH LPDRNBICCOPIESLTTRENCL551111011vlggg4I5$TOTALNUMBEROFCOPIESREQUIRED:
LTTR21ENCL18 II)'1I(+~%~'~v'~I'I't~q~~)~!F~J;NN INDIANA&MICHIGANELECTRICCOMPANYP.O.BOX16631COLUMBUS, OHIO43216September 14,1987AEP'NRC:1035 DonaldC.CookNuclearPlantUnit2DocketNo.50-316LicenseNo.DPR-74UNIT2CYCLE7RELOAD:CHANGESTOLOWERTIEPLATEDESIGNU.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.C.20555Attn:T.E.Murley
DearDr.Murley:
Thepurposeofthisletteristoinformyouofourintenttomakeachangetothedesignofthelowertieplateinthefuelassemblies whichwillbefabricated byAdvancedNuclearFuelsCorporation (ANF)fortheupcomingD.C.CookUnit2Cycle7reload.D.C.CookUnit2Cycle7isscheduled tobeginoperation inJune1989.Thereloadwillconsistof80assemblies suppliedbyANF.Theassemblies willincorporate adebris-resistant lowertieplateinthefuelassemblydesigntoprovideprotection fortheassemblies intheunlikelyeventthatdebrisispresentintheprimarycoolantsystem.Thenewlowertieplateisspecifically designedtoentrapdebrisofthesizewhichwouldbeexpectedtobecomeentrapped inthefuelassemblyspacers.Unit2Cycle7willbeprecededbyanextendedoutagetoreplaceallfoursteamgenerators.
Althoughextremecautionwillbeexercised duringthisoutagetopreventdebrisfromenteringtheprimarycoolantsystem,therevisedlowertieplatedesignisconsidered additional protection againstfueldamage.Asafetyreviewoftherevisedlowertieplatedesignhasbeenperformed byANFandisincludedasanattachment tothisletter.Thisreviewconcluded thatthereviseddesigndoesnotconstitute anunreviewed safetyquestionasdefinedin10CFR50.59.Thisconclusion wasbasedonpressuredropdataobtainedexperimentally byANF.Theseexperiments demonstrated thatthepressuredropfortherevisedlowertieplatedesignwaslessthan0.5%higherthanthepresentdesign.Thisdifference wasconsidered exceedingly smallandisboundedbytheassumptions ofthecurrentD.C.CookUnit2Cycle6safetyanalysesperformed byANF.po9~~>>88709ePDRADQCK05000316P",."".PDRJ
(,C1 Dr.T.E.Murley-2-AEP:NRC:1035 SincetheD.C.CookUnit:2Cycle7reloadwillbeverysimilartothepresentCycle6reload,thecurrentplansforCycle7aretoreviewthereloadinhouseundertheprovisions of10CFR50.59,ratherthanseekformalNRCreview.Sincethesafetyreviewoftherevisedlowertieplatedesignconcluded thattherearenounreviewed safetyquestions associated withthedesignchange,theplanstoreviewthereloadundertheprovisions of10CFR50.59areunaltered.
However,becausetheCycle7fuelwilldifferindesignfromthatpreviously reviewedbytheNRC,wehavedecidedasacourtesytoinformyouofthechangeandtosolicityourcomments.
Asstatedabove,the10CFR50.59safetyevaluation performed byANFisattachedtothisletter;inaddition, ANFhastransmitted toyou,viatheirletterDAA:014:87, datedAugust25,1987,acopyoftheirreportANF-87-91, "D.C.Cook2Debris-Resistant LowerTiePlatePressureDropTestReport."ANFisscheduled tobeginfabrication oftheCycle7reloadfuelbyOctober13,1987.Therefore, werequestthatyouinformusofanycommentsyouhaveonthenewlowertieplatedesignbySeptember 30,1987,sothatwedonotriskdisruption ofthefabrication schedule.
Pursuanttotherequirements of10CFR170.12(c),
wehaveenclosedanapplication feeof$150.00.Thisdocumenthasbeenpreparedfollowing Corporate procedures whichincorporate areasonable setofcontrolstoinsureitsaccuracyandcompleteness priortosignature bytheundersigned.
Verytrulyyours,M.P.AlichVicePresident cmAttachment cc:JohnE.DolanV.G.Smith,Jr.-BridgmanG.Bruchmann R.C.CallenG.CharnoffNRCResidentInspector
-BridgmanA.B.Davis-RegionIII Attachment toAEP:NRC:1035 AdvancedNuclearFuelsSafetyEvaluation ofRevisedLowerTiePlateDesign
.ADyANCED NUCLEARFUELSCQRPORATION
- 0!HORNRAPIDSROAD.POBOX130,RICHL4PID, WA993524130 is09i3rsei00TELEx
- Ie2ereJuly30,1987ANF-AEP/0597 FUELENGINEERING 4TECHNICAL SERVICESIndiana5MichiganElectricCompanyc/oMr.ThomasGeorgantis
- Engineer, NuclearMaterials 3FuelManagement AmericanElectricPowerServiceCorp.OneRiverside Plaza,20thFloorColumbus, OH43216-6631
Reference:
ANF-87-91(P),
"Debris-Resistant LowerTiePlatePressureDropTestReport,"AdvancedNuclearFuelsCorp.,July1987
DearHr.Georgantis:
AtAEP'srequest,AdvancedNuclearFuels(ANF)hasincorporated adebris-resistant lowertieplate(LTP)inthefuelassemblydesignasaprecaution againsttheunlikelyeventofdebrisbeingpresentintheprimarycoolantsystem.Thedebris-resistant LTPhasbeendesignedtoreducethepossibility ofdebrisenteringthefueledregionofthefuelassemblyfromtheprimarycoolantsystem.Specifically, itisdesignedtoentrapdebrisof*thesizewhichwouldbeexpectedtobecomeentrapped inthefuelassemblyspacers.Thisisanimprovement overthecurrentLTPdesigninthatitwillaidintheprevention offuelrodfailuresassociated withdebrisbecomingentrapped inthefuelassemblyspacersandproducing failuresduetofretting.
Further,entrapping debrisintheLTPinsteadofinaspacerwillprovidemoretimefortheflowtorecoverduetocrossflowaffectsbeforereachingtheHONBRregion,Areviewofthepressuredropinformation providedinReference (1)indicates thattheunchamfered debris-resistant LTPproposedforD.C.CookUnit2hasessentially thesamepressuredropasthecurrentLTP.Thatis,lessthana0.5%difference wasobservedinthetestdataobtainedbetweenthecurrentLTPandtheprcposedunchamfered debris-resistant LTP.Sincethisdifference isexceedingly small,itwillproduceonlyaveryminorinletflowperturbation.
Thisminorinletflowperturbation wouldbeexpectedtodisappear duetocrossfloweffectspriortoreachingtheaxiallocationatwhichHONBRwouldoccur.Further,thecurrentHONBRanalysisperformed for0,C.CookUnit2assumeda5%inletflowmaldistribution forthehotchannelwhichissignificantly largerthantheinletflowmaldistribution whichwouldbeexpectedfromtheLTPchange.Basedonthis,itisconcluded thattheCycle6safetyanalysiswillcovertheplantconditions expectedtooccurasaresultoftheLTPchange.Thus,AdvancedNuclearFuels(ANF)hasconcluded thattheresultspresented intheCycle6Disposition ofEventsandsafetyanalysisreportsarenotaffectedbythechangeinLTPandthatthesereportswillremainapplicable tofuture T.Georgantis (AEP)July30,1987ANF-AEP/0597 cycleswiththeunchamfered debris-resistant LTP.Consequently, ANFconcludes thatthesubstitution oftheunchamfered debris-resistant LTPforthecurrentD.C,CookUnit2LTP:(I)Doesnotinvolveasignificant increaseintheprobability ofoccurrence ortheconsequences ofanaccidentpreviously evaluated inthesafetyanalysisreports(2)Doesnotcreatethepossibility foranaccidentormalfunction ofadifferent typethananyevaluated previously inthesafetyanalysisreport.(3)Doesnotinvolveasignificant reduction inthemarginofsafetyasdefinedinthebasesforthetechnical specifications.
Therefore, ANFconcludes thatthesubstitution oftheunchamfered debris-resistant LTPforthecurrentLTPdoesnotinvolveanunreviewed safetyissueasdefinedin10CFR50.59.Noadditional analysesarerequiredinsupportofthisfinding.Ifyouhaveanyquestions orcommentsregarding theabove,pleasefeelfreetocontactus.cc:J.M.Cleveland DH.Malin~V.VanderBurg Sincerely,
.r.-..g'-wŽ'aryN.Ward,ManagerReloadLicensing