ML23251A078
| ML23251A078 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Peach Bottom  |
| Issue date: | 09/06/2023 |
| From: | Constellation Energy Generation |
| To: | Office of Nuclear Material Safety and Safeguards |
| References | |
| Download: ML23251A078 (1) | |
Text
PeachBottomAtomicPower StationUnit1 DresdenNuclearPower StationUnit1 AlternateDecommissioning Schedule NRCPreSubmittalMeeting 9/14/2023
Purpose RegulatoryBackground PlannedSubmittalStrategy PeachBottomUnit1 DresdenUnit1 Timeline Agenda 2
Provideoverviewoftwoseparatesubmittalsrequestingalternate decommissioningschedulesforPeachBottomUnit1(PB1)and DresdenUnit1(DRE1)
Completionofdecommissioningbeyond60yearsof permanentcessationofoperations SitespecificfactorsuniquetoPB1andDRE1 Necessarytoprotectpublichealthandsafetywiththe presenceofoperatingnuclearfacilitiesatacommonsite SolicitfeedbackfromtheNRContheinformationpresentedand gaininsightonNRC'sinformationneedsandreviewschedule considerations Purpose 3
10CFR50.82(a)(3):Decommissioningwillbecompletedwithin60yearsof permanentcessationofoperations.Completionofdecommissioningbeyond60years willbeapprovedbytheCommissiononlywhennecessarytoprotectpublichealthand safety.FactorsthatwillbeconsideredbytheCommission inevaluatinganalternative thatprovidesforcompletionofdecommissioningbeyond60yearsofpermanent cessationofoperationsincludeunavailabilityofwastedisposalcapacityandother sitespecificfactorsaffectingthelicensee'scapabilitytocarryoutdecommissioning, includingpresenceofothernuclearfacilitiesatthesite.
Regulationexpresslycontemplatessitespecificfactors,suchasotheroperating units,asaconsiderationforwhethercompletionofdecommissioningbeyond60 yearsisnecessarytoprotectpublichealthandsafety StatementsofConsiderationforFinalRulespecificallynotethepresenceof anadjacentreactorwhosesafetymightbeaffectedbydismantlement proceduresasaconsideration RecentCommissiondecision(SECY210033)denyinganexemptionrequest under10CFR50.12toextenddecommissioningbeyond60yearsisnotbinding precedentandisdistinguishablefromsitespecificPB1andDRE1factors RegulatoryBackground 4
Alternatedecommissioningscheduleunder10CFR50.82(a)(3):
Independentsubmittalswithcommonapproach Sitespecificfactorsimpactingpublichealthandsafetyshould Unit1decommissioningbeperformedwithUnits2and3in operation DecommissioningandlicenseterminationofUnits1,2,and3 performedconcurrentlyeliminatessafetyconcernsrelatedtoa shutdownunitsharingSSCswithoperatingunits Unit1remainsunderanextendedSAFSTORperiodwithall existingprocessesandregulationsinplacetoensureadequate monitoringandagingmanagement RequestingalignmentofUnit1decommissioningschedule with operatingunitsdecommissioningschedules PlannedSubmittalStrategy 5
FirstHighTemperatureGasReactorprototypeundertheAtomic EnergyCommission 200MWt/40MWe,heliumcooled,graphitemoderated Operated19671974 DecommissioningactivitiescompletedbyFebruary1978to achieveSAFSTOR PB1continuestobemaintainedinSAFSTOR Decommissioning60yeartimelineOctober2034 PBUnit2licenseexpirationAugust2053*
PBUnit3licenseexpirationJuly2054*
- BasedonSubsequentRenewedFacilityOperatingLicense(SRFOL)issued March2020;however,NRCOrderCLI2204issuedFebruary2022reverted licenseexpirationdatesbacktoRenewedFacilityOperatingLicensedatesof 2033and2034,respectively.Awaitingfinalresolutionofgeneric environmentalimpactissuesinsupportofSRFOL.
PeachBottomUnit1-Background 6
Units1,2,and3oncommonsiteandOwnerControlledArea LegacystructuressupportUnits2and3operations NERCrequiredprotectiverelayschemeSSCsforUnits2and3 offsitepowersourcescreditedviaTechnicalSpecifications TechnicalSupportCenterisformerUnit1ControlRoom, facilityandsupportsystemsvitaltositeEmergencyPlan Licensedoperatortrainingfacilities,includingcontrolroom simulator,areintegratedwithUnit1structures AdjacenttotheheavyhaulpathforUnits2and3drycaskstorage operations,whichmustcontinueuntilpermanentcessationof operations PeachBottomUnit1-SiteSpecificFactors 7
PB1licenseamendmentrequesttoreviselicenseconditionsand TechnicalSpecificationswhichprecludedecommissioning activitieswithoutpriorNRCapprovalandimplementPSDAR processper10CFR50.82usingRegGuide1.185 Awaitingfinalresolutionofgenericenvironmentalimpactissues insupportofSRFOLforUnits2and3 PeachBottomUnit1-RelatedLicensingActions 8
Firstprivately funded commercialnuclearpowerstationunder theAtomicEnergyCommission 700MWt/200MWe,dualcycleboilingwaterreactor Operated19601978 DecommissioningactivitiescompletedbyJanuary2007toachieve SAFSTOR DRE1continuestobemaintainedinSAFSTOR Decommissioning60yeartimelineOctober2038 DREUnit2licenseexpirationDecember2029**
DREUnit3licenseexpirationJanuary2031**
- SubsequentLicenseRenewal(SLR)submittalplannedforApril 2024,requesting20yearlicenseextensions DresdenUnit1-Background 9
AdjoinedstructuressupportUnits1,2,and3operations CommonMainControlRoompartiallyinUnit1 Unit1andUnit2TurbineBuildingadjoined CommonsystemssupportUnits1,2,and3operationslocated adjacenttoUnit2andMainControlRoom Unit14kVand480VdistributionpowerUnit1systemsand sitebuildingssupportingUnits2and3 StationBlackout(SBO)Buildingauxiliarypowersuppliedfrom Unit1ACdistribution;SBOcablesroutedadjacenttoUnit1 PrimeComputerRoom,associateduninterruptiblepower supplyandbatteries Unit1125VDCchargersandbatteries Units2and3Recirculationpumpadjustablespeeddrive (ASD)I/Ocabinets Licensed/NonLicensedOperatorstagingareas DresdenUnit1-SiteSpecificFactors 10
Unit1ChimneylocatedadjacenttoundergroundSBOelectrical ducts Unit1ISFSIlocatedinUnit1operatingarearequiringrelocation Units1,2,and3oncommonsiteandProtectedArea(PA)
AdjoinedstructuresdonotsupportPAreconfiguration ImpactsUnits2and3SecurityPlan Units2and3functionsinUnit1operatingarea SBODieselBuilding InterimRadioactiveStorageFacility DieselFirePumpinUnit1IntakeStructure RobustFLEXBuilding Sitefacilitiessupportingmaintenancefunctions Containmentstructureadjacenttositesupportfacilities DresdenUnit1-SiteSpecificFactors(cont.)
11
DREUnits2and3SLRsubmittalplannedforQ2of2024,andif granted,willextendoperationto2049and2051,respectively DresdenUnit1-RelatedLicensingActions 12
PB1 PrioritizesubmittaloverDRE1dueto60year decommissioningtimelineendingin2034 TargetingSeptember2023submittal DRE1 SubsequenttoPeachBottomsubmittal,targeting4th Quarter 2023 Timeline 13
Discussion/Questions 14