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{{#Wiki_filter:UNITEDSTATESOFAMERICANUCLEARREGULATORYCOMMISSIONIntheMatterofRochesterGasandElectricCorporation(R.E.GinnaNuclearPowerPlant))))DocketNo.50-244)APPLICATIONFORAMENDMENTTPKRATINLlEEPursuanttoSection50.90oftheregulationsoftheU.S.NuclearRegulatoryCommission(the"Commission"),RochesterGasandElectricCorporation("RGEcE"),holderofFacilityOperatingLicenseNo.DPR-18,herebyrequeststhattheTechnicalSpecificationssetforthinAppendixAtothatLicensebeamended.ThisrequestforchangeinTechnicalSpecificationsistoreviseTable3.3.2-1,Function5b,"FeedwaterIsolation,SGWaterLevel-High"toraisetheallowablevalueandtripsetpoint.ThischangereflectsdesignimprovementsinthereplacementsteamgeneratorsbeinginstalledatGinnaStationduringthe1996RefuelingOutage.Adescriptionoftheamendmentrequest,necessarybackgroundinformation,justificationoftherequestedchange,safetyevaluationandnosignificanthazardsandenvironmentalconsiderationsareprovidedinAttachmentA.AmarkedupcopyoftheproposedGinnaStationTechnicalSpecificationswhichshowstherequestedchangeissetforinAttachmentB.TheproposedrevisedTechnicalSpecificationsareprovidedinAttachmentC.'7602130462960209'DRADQCK05000244PDR TheevaluationsetforthinAttachmentAdemonstratesthattheproposedchangedoesnotinvolveasignificantchangeinthetypesorasignificantincreaseintheamountsofeffluentsoranychangeintheauthorizedpowerlevelofthefacility.Theproposedchangealsodoesnotinvolveasignificanthazardsconsideration.WHEREFORE,ApplicantrespectfullyrequeststhatAppendixAtoFacilityOperatingLicenseNo.DPR-18beamendedintheformattachedheretoasAttachmentC.RochesterGasandElectricCorporationRobertC.MecredyVicePresidentNuclearProductionSubscribedandsworntobeforemeonthis9thdayofFebruary,1996.g~MNotaryPublicJOANNES.GORMANNotaryPublicintheStateofNewYorkOrleansCountyCommissionExpiresNov.19 | {{#Wiki_filter:UNITEDSTATESOFAMERICANUCLEARREGULATORYCOMMISSIONIntheMatterofRochesterGasandElectricCorporation(R.E.GinnaNuclearPowerPlant))))DocketNo.50-244)APPLICATIONFORAMENDMENTTPKRATINLlEEPursuanttoSection50.90oftheregulationsoftheU.S.NuclearRegulatoryCommission(the"Commission"),RochesterGasandElectricCorporation("RGEcE"),holderofFacilityOperatingLicenseNo.DPR-18,herebyrequeststhattheTechnicalSpecificationssetforthinAppendixAtothatLicensebeamended.ThisrequestforchangeinTechnicalSpecificationsistoreviseTable3.3.2-1,Function5b,"FeedwaterIsolation,SGWaterLevel-High"toraisetheallowablevalueandtripsetpoint.ThischangereflectsdesignimprovementsinthereplacementsteamgeneratorsbeinginstalledatGinnaStationduringthe1996RefuelingOutage.Adescriptionoftheamendmentrequest,necessarybackgroundinformation,justificationoftherequestedchange,safetyevaluationandnosignificanthazardsandenvironmentalconsiderationsareprovidedinAttachmentA.AmarkedupcopyoftheproposedGinnaStationTechnicalSpecificationswhichshowstherequestedchangeissetforinAttachmentB.TheproposedrevisedTechnicalSpecificationsareprovidedinAttachmentC.'7602130462960209'DRADQCK05000244PDR TheevaluationsetforthinAttachmentAdemonstratesthattheproposedchangedoesnotinvolveasignificantchangeinthetypesorasignificantincreaseintheamountsofeffluentsoranychangeintheauthorizedpowerlevelofthefacility.Theproposedchangealsodoesnotinvolveasignificanthazardsconsideration.WHEREFORE,ApplicantrespectfullyrequeststhatAppendixAtoFacilityOperatingLicenseNo.DPR-18beamendedintheformattachedheretoasAttachmentC.RochesterGasandElectricCorporationRobertC.MecredyVicePresidentNuclearProductionSubscribedandsworntobeforemeonthis9thdayofFebruary,1996.g~MNotaryPublicJOANNES.GORMANNotaryPublicintheStateofNewYorkOrleansCountyCommissionExpiresNov.19 | ||
/Qpflf><,$~1>IIPO(V.'ll~t ATTACHMENTAR.E.GINNANUCLEARPOWERPLANTLICENSEAMENDMENTREQUESTTECHNICALSPECIFICATIONSTABLE3.3.2-1Thisattachmentprovidesadescriptionoftheamendmentrequestandnecessaryjustificationfortheproposedchanges.Theattachmentisdividedintosixsectionsasfollows.SectionAidentifiesallchangestothecurrentGinnaStationTechnicalSpecificationswhileSectionBprovidesthebackgroundandhistoryassociatedwiththechangesbeingrequested.SectionCprovidesdetailedjustificationfortheproposedchanges.Asafetyevaluation,significanthazardsconsiderationevaluationandenvironmentalconsiderationoftherequestedchangesareprovidedinSectionsD,E,andF,respectively.A.DESCRIPTIONOFAlVKNDMENTREQUESTThisLicenseAmendmentRequest(LAR)proposestoreviseGinnaStationTechnicalSpecificationsTable3.3.2-1asfollows(seeAttachmentBandC):1.TechnicalSpecificationTable3.3.2-1,FunctionSb.i.Theallowablevalueischangedfrom<68%to<94%.ii.Thetripsetpointvalueischangedfrom<67%to<85%.B.BACKGROUND1.HistoryTheSteamGeneratorWaterLevel-Highfeedwaterisolationsetpointisdesignedtopreventexcessivemoisturecarryovertothemainsteamsystem,whichwouldcauseexcessivewearonthemainturbine.SteamGeneratorsseparatewaterintwostages,aPrimarystageandasecondarystage.Primaryseparatorsarelocatedinthesteamdrumofthegeneratorbelowthesecondaryseparators,andgenerallyworkonthecentrifugalprinciple.Thehighwaterlevelsetpointischosensuchthatwaterinthedowncomerisnotabovethetopoftheseprimaryseparatorswhichwouldfloodthemanddegradetheirperformance. GinnaStationisplanningtoreplaceitssteamgeneratorsduringthe1996RefuelingOutage.TheoriginalsteamgeneratorsareWestinghouseModel44steamgenerators.Theprimaryseparatorfloodpointforthesegeneratorsisatapproximately75%narrowrangewaterlevel.Consequently,asetpointsufficientlybelowthisvaluetoallowforinstrumentandprocessmeasurementuncertaintyischosenforthecurrentsetpointvalueof67%narrowrange.ReplacementsteamgeneratorsarebeingmanufacturedbyBabcockandWilcoxInternational.Thefloodpointfortheprimaryseparatorsonthesegeneratorsisabove100%narrowrangelevel.Consequently,newsetpointssufficientlybelow100%toaccountforprocessmeasurementuncertaintyarechosenforanallowablevalue(94%),andinstrumentuncertaintyforasetpointvalue(85%).Thisexpandedrangeallowstheoperatormoretimetorestoreleveltonominalconditionsusingcontrolledmeanspriortoinitiationoffeedwaterisolation.HardwareModificationsPriortoimplementingthisTechnicalSpecificationchangethesteamgeneratorsmustbereplaced.Nootherhardwarechangesarerequired.C.JUSTIFICATIONThedesignofthereplacementsteamgeneratorsissuchthattheprimarysteamseparatorsarelocatedatahigherelevationinthesteamdrumthanintheexistingsteamgenerators.Thebottomoftheactualseparatorisapproximately14inchesabovetheuppernarrowrangeleveltap.Therefore,itisacceptabletooperatewithwaterlevelsabove100%narrowrangelevelwithoutdegradingseparatorperformance.Sincewaterlevelabove100%cannotbemonitored,100%ischosenasthelimit.ThUPSAliidlyhdIhipi(Si15..6,~i"denertrAmshericReliefValveanFeewernrllveFailire)currentlyuseavalueof100%narrowrangelevel.Therefore,theaccidentanalysisisnotaffectedbythisproposedchange.Minimizingthechallengestothissetpointisbeneficial.Fastswingsinfeedwatervalvepositioncausedbyactuation/clearingofthissetpointmakeitdifficulttocontrolthefeedwatersystem,levelintheothersteamgenerator,andprimarysidetemperature.Byraisingthissetpointthenumberofchallengesarereduced.D.SAFETYEVALUATIONTheSteamGeneratorWaterLevel-Highfeedwaterisolationfunctionisdesignedtopreventexcessivemoisturecarryovertothemainsteamsystem.Theproposedsetpointchangedoesnotdegradethecapabilityofthemoistureseparatorsandthereforethisfunctionisunchanged. TheUFSARaccidentanalysesthatmodelthisfunction(UFSARSection15.1.6)useavalueof100%narrowrangelevel.Thereforetheaccidentanalysisisnotaffectedbythisproposedchange.Basedontheabove,theproposedamendmentdoesnotinvolveanunreviewedsafetyquestionandwillnotadverselyaffectorendangerthehealthandsafetyofthegeneralpublic.E.SIGNIFICANTHAZARDSCONSIDERATIONEVALUATIONTheproposedchangestotheGinnaStationTechnicalSpecificationsdoesnotinvolveasignificanthazardsconsiderationasdiscussedbelow:OperationofGinnaStationinaccordancewiththeproposedchangesdoesnotinvolveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated.TheproposedsetpointchangedoesnotdegradetheperformanceofanyplantequipmentTherefore,theprobabilityofanaccidentisnotincreased.Sincetherevisedtripsetpointandallowablevalueremainboundedbytheaccidentanalysisvalueof100%steamgeneratornarrowrangelevel,theconsequencesofanyaccidentarenotadverselyaffected.OperationofGinnaStationinaccordancewiththeproposedchangesdoesnotcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.Theproposedchangedoesnotinvolveaphysicalalterationtotheplant(i.e.,nonewordifferenttypesofequipmentwillbeinstalled)orchangesinthemethodsgoverningnormalplantoperation,Thus,thischangedoesnotcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.OperationofGinnaStationinaccordancewiththeproposedchangesdoesnotinvolveasignificantreductioninamarginofsafety.Therevisedsetpointandallowablevalueremainboundedbytheaccidentanalysisassumptions.Theexistingvaluesarebasedon'designconsiderationsandnotaccidentanalysisparameters.ThereplacementsteamgeneratorsarenotrestrictedbythesamedesignconsiderationswithrespecttotheESFASSteamGeneratorWaterLevel-Highfunction.Therefore,thischangedoesnotinvolveareductioninamarginofsafety.Basedupontheaboveinformation,ithasbeendeterminedthattheproposedchangestotheGinnaStationTechnicalSpecificationsdonotinvolveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated,doesnotcreatethepossibilityofanewordifferentkindofaccidentpreviouslyevaluated,anddoesnotinvolveasignificantreductioninamarginofsafety.Therefore,itisconcludedthattheproposedchangesmeettherequirementsof10CFR50.92(c)anddonotinvolveasignificanthazardsconsideration. | /Qpflf><,$~1>IIPO(V.'ll~t ATTACHMENTAR.E.GINNANUCLEARPOWERPLANTLICENSEAMENDMENTREQUESTTECHNICALSPECIFICATIONSTABLE3.3.2-1Thisattachmentprovidesadescriptionoftheamendmentrequestandnecessaryjustificationfortheproposedchanges.Theattachmentisdividedintosixsectionsasfollows.SectionAidentifiesallchangestothecurrentGinnaStationTechnicalSpecificationswhileSectionBprovidesthebackgroundandhistoryassociatedwiththechangesbeingrequested.SectionCprovidesdetailedjustificationfortheproposedchanges.Asafetyevaluation,significanthazardsconsiderationevaluationandenvironmentalconsiderationoftherequestedchangesareprovidedinSectionsD,E,andF,respectively.A.DESCRIPTIONOFAlVKNDMENTREQUESTThisLicenseAmendmentRequest(LAR)proposestoreviseGinnaStationTechnicalSpecificationsTable3.3.2-1asfollows(seeAttachmentBandC):1.TechnicalSpecificationTable3.3.2-1,FunctionSb.i.Theallowablevalueischangedfrom<68%to<94%.ii.Thetripsetpointvalueischangedfrom<67%to<85%.B.BACKGROUND1.HistoryTheSteamGeneratorWaterLevel-Highfeedwaterisolationsetpointisdesignedtopreventexcessivemoisturecarryovertothemainsteamsystem,whichwouldcauseexcessivewearonthemainturbine.SteamGeneratorsseparatewaterintwostages,aPrimarystageandasecondarystage.Primaryseparatorsarelocatedinthesteamdrumofthegeneratorbelowthesecondaryseparators,andgenerallyworkonthecentrifugalprinciple.Thehighwaterlevelsetpointischosensuchthatwaterinthedowncomerisnotabovethetopoftheseprimaryseparatorswhichwouldfloodthemanddegradetheirperformance. GinnaStationisplanningtoreplaceitssteamgeneratorsduringthe1996RefuelingOutage.TheoriginalsteamgeneratorsareWestinghouseModel44steamgenerators.Theprimaryseparatorfloodpointforthesegeneratorsisatapproximately75%narrowrangewaterlevel.Consequently,asetpointsufficientlybelowthisvaluetoallowforinstrumentandprocessmeasurementuncertaintyischosenforthecurrentsetpointvalueof67%narrowrange.ReplacementsteamgeneratorsarebeingmanufacturedbyBabcockandWilcoxInternational.Thefloodpointfortheprimaryseparatorsonthesegeneratorsisabove100%narrowrangelevel.Consequently,newsetpointssufficientlybelow100%toaccountforprocessmeasurementuncertaintyarechosenforanallowablevalue(94%),andinstrumentuncertaintyforasetpointvalue(85%).Thisexpandedrangeallowstheoperatormoretimetorestoreleveltonominalconditionsusingcontrolledmeanspriortoinitiationoffeedwaterisolation.HardwareModificationsPriortoimplementingthisTechnicalSpecificationchangethesteamgeneratorsmustbereplaced.Nootherhardwarechangesarerequired.C.JUSTIFICATIONThedesignofthereplacementsteamgeneratorsissuchthattheprimarysteamseparatorsarelocatedatahigherelevationinthesteamdrumthanintheexistingsteamgenerators.Thebottomoftheactualseparatorisapproximately14inchesabovetheuppernarrowrangeleveltap.Therefore,itisacceptabletooperatewithwaterlevelsabove100%narrowrangelevelwithoutdegradingseparatorperformance.Sincewaterlevelabove100%cannotbemonitored,100%ischosenasthelimit.ThUPSAliidlyhdIhipi(Si15..6,~i"denertrAmshericReliefValveanFeewernrllveFailire)currentlyuseavalueof100%narrowrangelevel.Therefore,theaccidentanalysisisnotaffectedbythisproposedchange.Minimizingthechallengestothissetpointisbeneficial.Fastswingsinfeedwatervalvepositioncausedbyactuation/clearingofthissetpointmakeitdifficulttocontrolthefeedwatersystem,levelintheothersteamgenerator,andprimarysidetemperature.Byraisingthissetpointthenumberofchallengesarereduced.D.SAFETYEVALUATIONTheSteamGeneratorWaterLevel-Highfeedwaterisolationfunctionisdesignedtopreventexcessivemoisturecarryovertothemainsteamsystem.Theproposedsetpointchangedoesnotdegradethecapabilityofthemoistureseparatorsandthereforethisfunctionisunchanged. TheUFSARaccidentanalysesthatmodelthisfunction(UFSARSection15.1.6)useavalueof100%narrowrangelevel.Thereforetheaccidentanalysisisnotaffectedbythisproposedchange.Basedontheabove,theproposedamendmentdoesnotinvolveanunreviewedsafetyquestionandwillnotadverselyaffectorendangerthehealthandsafetyofthegeneralpublic.E.SIGNIFICANTHAZARDSCONSIDERATIONEVALUATIONTheproposedchangestotheGinnaStationTechnicalSpecificationsdoesnotinvolveasignificanthazardsconsiderationasdiscussedbelow:OperationofGinnaStationinaccordancewiththeproposedchangesdoesnotinvolveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated.TheproposedsetpointchangedoesnotdegradetheperformanceofanyplantequipmentTherefore,theprobabilityofanaccidentisnotincreased.Sincetherevisedtripsetpointandallowablevalueremainboundedbytheaccidentanalysisvalueof100%steamgeneratornarrowrangelevel,theconsequencesofanyaccidentarenotadverselyaffected.OperationofGinnaStationinaccordancewiththeproposedchangesdoesnotcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.Theproposedchangedoesnotinvolveaphysicalalterationtotheplant(i.e.,nonewordifferenttypesofequipmentwillbeinstalled)orchangesinthemethodsgoverningnormalplantoperation,Thus,thischangedoesnotcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.OperationofGinnaStationinaccordancewiththeproposedchangesdoesnotinvolveasignificantreductioninamarginofsafety.Therevisedsetpointandallowablevalueremainboundedbytheaccidentanalysisassumptions.Theexistingvaluesarebasedon'designconsiderationsandnotaccidentanalysisparameters.ThereplacementsteamgeneratorsarenotrestrictedbythesamedesignconsiderationswithrespecttotheESFASSteamGeneratorWaterLevel-Highfunction.Therefore,thischangedoesnotinvolveareductioninamarginofsafety.Basedupontheaboveinformation,ithasbeendeterminedthattheproposedchangestotheGinnaStationTechnicalSpecificationsdonotinvolveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated,doesnotcreatethepossibilityofanewordifferentkindofaccidentpreviouslyevaluated,anddoesnotinvolveasignificantreductioninamarginofsafety.Therefore,itisconcludedthattheproposedchangesmeettherequirementsof10CFR50.92(c)anddonotinvolveasignificanthazardsconsideration. | ||
F.ENVIRONMENTALCONSIDERATIONRGBhasevaluatedtheproposedchangesanddeterminedthat:ThechangesdonotinvolveasignificanthazardsconsiderationasdocumentedinSectionEabove;2.Thechangesdonotinvolveachangeinthetypesorincreaseintheamountsofanyeffluentsthatmaybereleasedoffsitesinceequipmentperformanceisunchanged,andtheaccidentanalysisisunchanged.ThechangesdonotinvolveanyincreaseinindividualorcumulativeoccupationalradiationexposuresincenonewordifferenttypeofequipmentarerequiredtobeinstalledasaresultofthisLAR,norareanyoperatingortestingpracticestobechanged.Accordingly,theproposedchangesmeettheeligibilitycriteriaforcategoricalexclusionsetforthin10CFR51.22(c)(9).Therefore,pursuantto10CFR51.22(b),anenvironmentalassessmentoftheproposedchangesisnotrequired. | F.ENVIRONMENTALCONSIDERATIONRGBhasevaluatedtheproposedchangesanddeterminedthat:ThechangesdonotinvolveasignificanthazardsconsiderationasdocumentedinSectionEabove;2.Thechangesdonotinvolveachangeinthetypesorincreaseintheamountsofanyeffluentsthatmaybereleasedoffsitesinceequipmentperformanceisunchanged,andtheaccidentanalysisisunchanged.ThechangesdonotinvolveanyincreaseinindividualorcumulativeoccupationalradiationexposuresincenonewordifferenttypeofequipmentarerequiredtobeinstalledasaresultofthisLAR,norareanyoperatingortestingpracticestobechanged.Accordingly,theproposedchangesmeettheeligibilitycriteriaforcategoricalexclusionsetforthin10CFR51.22(c)(9).Therefore,pursuantto10CFR51.22(b),anenvironmentalassessmentoftheproposedchangesisnotrequired.}} | ||
}} |
Revision as of 13:20, 18 May 2018
ML17264A344 | |
Person / Time | |
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Site: | Ginna |
Issue date: | 02/09/1996 |
From: | MECREDY R C ROCHESTER GAS & ELECTRIC CORP. |
To: | |
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ML17264A343 | List: |
References | |
NUDOCS 9602130462 | |
Download: ML17264A344 (7) | |
Text
UNITEDSTATESOFAMERICANUCLEARREGULATORYCOMMISSIONIntheMatterofRochesterGasandElectricCorporation(R.E.GinnaNuclearPowerPlant))))DocketNo.50-244)APPLICATIONFORAMENDMENTTPKRATINLlEEPursuanttoSection50.90oftheregulationsoftheU.S.NuclearRegulatoryCommission(the"Commission"),RochesterGasandElectricCorporation("RGEcE"),holderofFacilityOperatingLicenseNo.DPR-18,herebyrequeststhattheTechnicalSpecificationssetforthinAppendixAtothatLicensebeamended.ThisrequestforchangeinTechnicalSpecificationsistoreviseTable3.3.2-1,Function5b,"FeedwaterIsolation,SGWaterLevel-High"toraisetheallowablevalueandtripsetpoint.ThischangereflectsdesignimprovementsinthereplacementsteamgeneratorsbeinginstalledatGinnaStationduringthe1996RefuelingOutage.Adescriptionoftheamendmentrequest,necessarybackgroundinformation,justificationoftherequestedchange,safetyevaluationandnosignificanthazardsandenvironmentalconsiderationsareprovidedinAttachmentA.AmarkedupcopyoftheproposedGinnaStationTechnicalSpecificationswhichshowstherequestedchangeissetforinAttachmentB.TheproposedrevisedTechnicalSpecificationsareprovidedinAttachmentC.'7602130462960209'DRADQCK05000244PDR TheevaluationsetforthinAttachmentAdemonstratesthattheproposedchangedoesnotinvolveasignificantchangeinthetypesorasignificantincreaseintheamountsofeffluentsoranychangeintheauthorizedpowerlevelofthefacility.Theproposedchangealsodoesnotinvolveasignificanthazardsconsideration.WHEREFORE,ApplicantrespectfullyrequeststhatAppendixAtoFacilityOperatingLicenseNo.DPR-18beamendedintheformattachedheretoasAttachmentC.RochesterGasandElectricCorporationRobertC.MecredyVicePresidentNuclearProductionSubscribedandsworntobeforemeonthis9thdayofFebruary,1996.g~MNotaryPublicJOANNES.GORMANNotaryPublicintheStateofNewYorkOrleansCountyCommissionExpiresNov.19
/Qpflf><,$~1>IIPO(V.'ll~t ATTACHMENTAR.E.GINNANUCLEARPOWERPLANTLICENSEAMENDMENTREQUESTTECHNICALSPECIFICATIONSTABLE3.3.2-1Thisattachmentprovidesadescriptionoftheamendmentrequestandnecessaryjustificationfortheproposedchanges.Theattachmentisdividedintosixsectionsasfollows.SectionAidentifiesallchangestothecurrentGinnaStationTechnicalSpecificationswhileSectionBprovidesthebackgroundandhistoryassociatedwiththechangesbeingrequested.SectionCprovidesdetailedjustificationfortheproposedchanges.Asafetyevaluation,significanthazardsconsiderationevaluationandenvironmentalconsiderationoftherequestedchangesareprovidedinSectionsD,E,andF,respectively.A.DESCRIPTIONOFAlVKNDMENTREQUESTThisLicenseAmendmentRequest(LAR)proposestoreviseGinnaStationTechnicalSpecificationsTable3.3.2-1asfollows(seeAttachmentBandC):1.TechnicalSpecificationTable3.3.2-1,FunctionSb.i.Theallowablevalueischangedfrom<68%to<94%.ii.Thetripsetpointvalueischangedfrom<67%to<85%.B.BACKGROUND1.HistoryTheSteamGeneratorWaterLevel-Highfeedwaterisolationsetpointisdesignedtopreventexcessivemoisturecarryovertothemainsteamsystem,whichwouldcauseexcessivewearonthemainturbine.SteamGeneratorsseparatewaterintwostages,aPrimarystageandasecondarystage.Primaryseparatorsarelocatedinthesteamdrumofthegeneratorbelowthesecondaryseparators,andgenerallyworkonthecentrifugalprinciple.Thehighwaterlevelsetpointischosensuchthatwaterinthedowncomerisnotabovethetopoftheseprimaryseparatorswhichwouldfloodthemanddegradetheirperformance. GinnaStationisplanningtoreplaceitssteamgeneratorsduringthe1996RefuelingOutage.TheoriginalsteamgeneratorsareWestinghouseModel44steamgenerators.Theprimaryseparatorfloodpointforthesegeneratorsisatapproximately75%narrowrangewaterlevel.Consequently,asetpointsufficientlybelowthisvaluetoallowforinstrumentandprocessmeasurementuncertaintyischosenforthecurrentsetpointvalueof67%narrowrange.ReplacementsteamgeneratorsarebeingmanufacturedbyBabcockandWilcoxInternational.Thefloodpointfortheprimaryseparatorsonthesegeneratorsisabove100%narrowrangelevel.Consequently,newsetpointssufficientlybelow100%toaccountforprocessmeasurementuncertaintyarechosenforanallowablevalue(94%),andinstrumentuncertaintyforasetpointvalue(85%).Thisexpandedrangeallowstheoperatormoretimetorestoreleveltonominalconditionsusingcontrolledmeanspriortoinitiationoffeedwaterisolation.HardwareModificationsPriortoimplementingthisTechnicalSpecificationchangethesteamgeneratorsmustbereplaced.Nootherhardwarechangesarerequired.C.JUSTIFICATIONThedesignofthereplacementsteamgeneratorsissuchthattheprimarysteamseparatorsarelocatedatahigherelevationinthesteamdrumthanintheexistingsteamgenerators.Thebottomoftheactualseparatorisapproximately14inchesabovetheuppernarrowrangeleveltap.Therefore,itisacceptabletooperatewithwaterlevelsabove100%narrowrangelevelwithoutdegradingseparatorperformance.Sincewaterlevelabove100%cannotbemonitored,100%ischosenasthelimit.ThUPSAliidlyhdIhipi(Si15..6,~i"denertrAmshericReliefValveanFeewernrllveFailire)currentlyuseavalueof100%narrowrangelevel.Therefore,theaccidentanalysisisnotaffectedbythisproposedchange.Minimizingthechallengestothissetpointisbeneficial.Fastswingsinfeedwatervalvepositioncausedbyactuation/clearingofthissetpointmakeitdifficulttocontrolthefeedwatersystem,levelintheothersteamgenerator,andprimarysidetemperature.Byraisingthissetpointthenumberofchallengesarereduced.D.SAFETYEVALUATIONTheSteamGeneratorWaterLevel-Highfeedwaterisolationfunctionisdesignedtopreventexcessivemoisturecarryovertothemainsteamsystem.Theproposedsetpointchangedoesnotdegradethecapabilityofthemoistureseparatorsandthereforethisfunctionisunchanged. TheUFSARaccidentanalysesthatmodelthisfunction(UFSARSection15.1.6)useavalueof100%narrowrangelevel.Thereforetheaccidentanalysisisnotaffectedbythisproposedchange.Basedontheabove,theproposedamendmentdoesnotinvolveanunreviewedsafetyquestionandwillnotadverselyaffectorendangerthehealthandsafetyofthegeneralpublic.E.SIGNIFICANTHAZARDSCONSIDERATIONEVALUATIONTheproposedchangestotheGinnaStationTechnicalSpecificationsdoesnotinvolveasignificanthazardsconsiderationasdiscussedbelow:OperationofGinnaStationinaccordancewiththeproposedchangesdoesnotinvolveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated.TheproposedsetpointchangedoesnotdegradetheperformanceofanyplantequipmentTherefore,theprobabilityofanaccidentisnotincreased.Sincetherevisedtripsetpointandallowablevalueremainboundedbytheaccidentanalysisvalueof100%steamgeneratornarrowrangelevel,theconsequencesofanyaccidentarenotadverselyaffected.OperationofGinnaStationinaccordancewiththeproposedchangesdoesnotcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.Theproposedchangedoesnotinvolveaphysicalalterationtotheplant(i.e.,nonewordifferenttypesofequipmentwillbeinstalled)orchangesinthemethodsgoverningnormalplantoperation,Thus,thischangedoesnotcreatethepossibilityofanewordifferentkindofaccidentfromanyaccidentpreviouslyevaluated.OperationofGinnaStationinaccordancewiththeproposedchangesdoesnotinvolveasignificantreductioninamarginofsafety.Therevisedsetpointandallowablevalueremainboundedbytheaccidentanalysisassumptions.Theexistingvaluesarebasedon'designconsiderationsandnotaccidentanalysisparameters.ThereplacementsteamgeneratorsarenotrestrictedbythesamedesignconsiderationswithrespecttotheESFASSteamGeneratorWaterLevel-Highfunction.Therefore,thischangedoesnotinvolveareductioninamarginofsafety.Basedupontheaboveinformation,ithasbeendeterminedthattheproposedchangestotheGinnaStationTechnicalSpecificationsdonotinvolveasignificantincreaseintheprobabilityorconsequencesofanaccidentpreviouslyevaluated,doesnotcreatethepossibilityofanewordifferentkindofaccidentpreviouslyevaluated,anddoesnotinvolveasignificantreductioninamarginofsafety.Therefore,itisconcludedthattheproposedchangesmeettherequirementsof10CFR50.92(c)anddonotinvolveasignificanthazardsconsideration.
F.ENVIRONMENTALCONSIDERATIONRGBhasevaluatedtheproposedchangesanddeterminedthat:ThechangesdonotinvolveasignificanthazardsconsiderationasdocumentedinSectionEabove;2.Thechangesdonotinvolveachangeinthetypesorincreaseintheamountsofanyeffluentsthatmaybereleasedoffsitesinceequipmentperformanceisunchanged,andtheaccidentanalysisisunchanged.ThechangesdonotinvolveanyincreaseinindividualorcumulativeoccupationalradiationexposuresincenonewordifferenttypeofequipmentarerequiredtobeinstalledasaresultofthisLAR,norareanyoperatingortestingpracticestobechanged.Accordingly,theproposedchangesmeettheeligibilitycriteriaforcategoricalexclusionsetforthin10CFR51.22(c)(9).Therefore,pursuantto10CFR51.22(b),anenvironmentalassessmentoftheproposedchangesisnotrequired.