ML23089A147

Enclosure 1: NRC Plant Decommissioning Funding Status Report - 2023

ML23089A147
Person / Time
Site:	Callaway
Issue date:	03/30/2023
From:	Ameren Missouri, Union Electric Co
To:	Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
Shared Package
ML23089A145	List: ML23089A147 ML23089A148 ML23089A149 ULNRC-06798, Submittal of Status of Plant Decommissioning Funding and ISFSI Decommissioning Funding Plan
References
ULNRC-06798
Download: ML23089A147 (1)

Text

Enclosure1to ULNRC-06798Page2of8 20CSR4240-20.070DecommissioningTrustFunds (4)Everythree(3)years,utilitieswithdecommissioningtrustfundsshailperformandfile withthecommissioncoststudiesdetailingtheutilities latestcostestimatesfor decommissioningtheirnucleargeneratingunit(s)alongwiththefundinglevelsnecessary todefraythesedecommissioningcosts.Thesestudiesshallbefiledalongwith appropriatetariff(s)effectuatingthechangeinratesnecessarytoaccomplishthefunding required.Inaddition,thecommission,atanytimeforjustcause,mayrequireautilityto fileanupdateddecommissioningcoststudy,fundingrequirement,andassociated tariff(s).

Thecurrentsite-specificanalysisapprovedbytheMPSCwascompletedinOctober2020.It calculatedaPlantdecommissioningcostestimateof$l,036,260,000intermsof2020 dollars.2AmerenMissouriconsidersthissite-specificPlantdecommissioningcostestimate of$1,036,260,000astheestimateforwhichfundingadequacymustbeassuredforMPSC fundingadequacypurposes.Duetoitssite-specificnature,itisamoreaccurateestimateof projecteddecommissioningcosts.

ForPlantdecommissioninginthe2020study,approximately82.5%($855,393,000)ofthe

$1,036,260,000site-specificcostestimateisassociatedwithphysicaldecontaminationand dismantlingofradioactivesystemsandstructuressuchthatthelicensecanbeterminated.

Managementandtransferofspentfuelaccountsfor6.7%($69,200,000)ofthesitespecific costestimate.Theremaining10.8%($111,667,000)isfordemolitionofdesignatednon-radioactivestructuresandlimitedsiterestoration.

Thesestudiesareconsideredsnapshotsofthedecommissioningcostandareusedto determineifanychangesarerequiredinthecontributionstothedecommissioningfund.Due tothecomplexityofthestudy,theuseofanycostescalationfactorswouldintroduce considerableuncertaintyintotheescalatedcost.Sincethisstudyisconductedeverythree years,Amerendoesnotescalatethestudycostestimatesfortheyearsbetweenstudyperiods.

AninformationalonlycopyoftheOctober2020Site-SpecificDecommissioningCost AnalysisfortheCallawayEnergyCenterisprovidedinEnclosure4.

2.AmountofDecommissioningFundsAccumulatedtotheEndoftheCalendarYear PrecedingtheDateofthisReport SeparatesubaccountshavebeenestablishedandaremaintainedforPlantandISFSI decommissioning.ThetotalamountaccumulatedinthePlantdecommissioningfundasof December31,2022is$875,356,047.61.Thisisanaftertaxliquidationvaluewhichreflects thefinalfundsthatwouldbereceiveduponliquidationofthefundsassetsandthepayment ofincometaxesonrealizedcapitalgains.Thisiscalculatedasfollows: to ULNRC-06798Page3of8MissouriFERCTOTAL JurisdictionalJurisdictionalOverall SubaccountSubaccountFund TotalNetAssets:$931,189,312.87$23,346,858.32$954,536,171.19 Less:BookValue:542,233,374.2816,402,179.02558,635,553.30 Equals:UnrealizedGain:$388,955,938.59$6,944,679.30$395,900,617.89 IncomeTaxon UnrealizedGain

@20%Rate:$77,791,187.72$1,388,935.86$79,180,123.58 After-Tax LiquidationValue:$853,398,125.15$21,957,922.46$875,356,047.61 CopiesofthetrusteesStatementofNetAssetsAvailableforBenefitsasofDecember31, 2022confirmingtheforegoingvaluationamountsareprovidedinEnclosure5.

Thisdecommissioningfundbalanceindicatedaboveisatotalamountintendedtocoverthe fullgreenfieldingofthesite.Thefundsinthetrustfundarenotsegregatedintosub-accounts forradiologicaldecommissioningversusnon-radiologicaldecommissioning.

BasedontheestimatedPlantdecommissioningcostscontainedinthe2020sitespecific decommissioningcostestimate,allocationpercentagesforLicenseTermination,SpentFuel ManagementandSiteRestorationcanbecalculated.Byapplyingthesepercentagestothe after-taxliquidationvalueofthejurisdictionalsubaccounts,thedollaramountsoftheoverall jurisdictionalsubaccountsallocatedforthedecommissioningcostcategoriescanbederived:

LicenseTermination:82.5%of$875,356,048$722,168,740 SpentFuelManagement:6.7%of$875,356,048 =$58,648,855 SiteRestoration:10.8%of$875,356,048 =$94,538,453 Missourisdefinitionofdecommissioningencompassesboththeradiologicalandnon-radiologicalstructures,systemsandcomponentsoftheplant,asstatedinthefollowing sectionfromtheMissouriCodeofStateRegulations:

20CSR4240-20.070DecommissioningTrustFunds (1)Asusedinthisrule,decommissioningmeansthoseactivitiesundertakeninconnection withanucleargeneratingunitsretirementfromservicetoensurethatthefinalremoval, disposal,entombment,orotherdispositionoftheunitandofanyradioactivecomponents andmaterialsassociatedwiththeunit,areaccomplishedincompliancewithall applicablelaws,andtoensurethatthefinaldispositiondoesnotposeanyunduethreatto thepublichealthandsafety.Decommissioningincludestheremovalanddisposalofthe