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Category:Legal-Pleading
MONTHYEARML20279A4812020-10-0505 October 2020
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NRC Staff Supplemental Proposed Findings of Fact and Conclusions of Law
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NRC Staff'S Answer to Nextera'S Motion in Limine
ML19254F1582019-09-11011 September 2019
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C-10 Research and Education Foundation, Inc. Rebuttal Statement of Position on C-10's Contentions Regarding Nextera'S Program for Managing ASR at Seabrook Station Nuclear Power Plant
ML19235A3182019-08-23023 August 2019
Appendix a Revised Exhibit List
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NRC Staff Initial Written Statement of Position
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NextEra Energy Seabrook LLC Statement of Position and Certificate of Service
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Appendix a Exhibit List
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Declaration of Victor E. Saouma, Ph.D
ML19044A7722019-02-13013 February 2019
Exhibit 3 to Saouma Declaration: Sauoma, Experimental and Numerical Investigation of Alkali Silica Reaction in Nuclear Reactors, Final Summary Report
ML19044A7732019-02-12012 February 2019
Exhibit 4a to Saouma Declaration: Introduction and Executive Summary
2020-09-28
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CONTAINSPROPRIETARYINFORMATION{SUBJECTTOPROTECTIVEORDERReviewofSelectedDocumentsPertainingtotheStructuralEvaluationofSeabrookNuclearPowerPlantByProf.VictorE.SaoumaUniversityofColorado,BoulderSubmittedtoC-10ResearchandEducationFoundationNewburyport,MAFeb.12,20191 CONTAINSPROPRIETARYINFORMATION{SUBJECTTOPROTECTIVEORDER1IntroductionandExecutiveSummaryThisreportpresentsmyevaluationofthelarge-scaletestingofconcretespecimensattheFergusonStructuralEngineeringLaboratory(FSEL)attheUniversityofTexasforthepurposeofevaluatingtheofAlkali-SilicareactionattheSeabrooknuclearpowerplantontheabilityofthecontainmenttowithstandadesign-basisearthquake.IhavealsoreviewedtheelementassessmentofSeabrookconductedbySGH,aconsultanttoNextEraEnergySeabrook,LLC.TheFSELtestprogramsfrommultiplewsthatcannotprovideasolidbasisfortheauthor'sfar-reachingconclusions.Threemajorconcernsarenoted:First,asdiscussedinSection2.3,concreteusedintheFSELtestsisnotrepresentativeoftheconcreteatSeabrook.Thislackofrepresentativenesscutsacrossvirtuallyeverylevelofthetest,includingcharacteristicsofthematerialstested,testconditions,andassumptionsaboutthebehaviorofconcreteunderelementsimulations.Second,asdiscussedinSection3.3,theSheartestsdonothavetheproperboundaryconditions.Theyarealsolimitedtoout-of-planeshear,andsomelargeunexplainedcracksmayhavecorruptedthetestresults.Inaddition,thereisnoevidencethatthelimitstate(i.e.failureshearforce)wascapturedandthusthereisnoevidencethatshearfailurewasindeedcapturedasclaimed.Finally,asdiscussedinSection4.3,thecrackindexmeasurementsreliedonbytheauthorcannotprovideareliableassessmentofthein-situASRexpansion,becauseacrackindexmeasuredonthesurface(wheretheconcreteisrelativelydry)isnotrepresentativeofwhatishappeninginsidethespecimenwheretherelativehumidity(essentialforASR)ismuchhigher.Ofequal{ifnotgreater{concernistheelementassessmentofSeabrookconductedbySimpson,Gumpertz,&Heger(SGH).ThenumericaltechniquefollowedbySGHisadeterministic,linearandsimplisticmethodthatisusedforthedesignofnewstructures.ItisveryregretfulthatSGHdidnotemployinadditiontotheirminimalistanalysistheprobabilisticriskassessmentmethodpioneeredbytheNRC.Whereeasthiswouldhaverequiredanonlinearstaticandseismicanalyses,SGHcouldhaveobtainedamuchmoreaccurateassessmentcommensuratewiththeneedsforsuchacriticalstructure.ThisprobabilisticmethodwaspioneeredbytheNRCandiswell-acceptedasausefultoolforanalyzingthecomplexinteractionsofphenomenainnuclearsafetyanalyses.Myownindependentresearch,conductedonbehalfoftheNRCbetween2014and2017,thatprobabilisticanalysisofASRyieldsmorecredibleresultsthanthetypeoflinearanddeterministicanalysisusedbySGH.ThetestprogramatFSELwasexecutedbyaresearcherwellversedwithlarge-scaletestingandreinforcedconcreteingeneral.However,hispriorexposuretoASRseemstohavebeenlimitedtoapasttestprogramfortheTexasDepartmentofTransportation(testinglargescalebeamswithASR)incollaborationwithProf.Folliard,aninternationallyknownandrespectedresearcheronthematterofASR.ButDr.FolliarddidnotparticipateintheFSELtestprogram.Insummary,itismyprofessionalopinionthatboththeFSELtestprogramandtheSGHiteele-mentanalysisaresubstandardandinadequatetosupportanyconclusionthattheabilityoftheSeabrookcontainmenttowithstandadesignbasisearthquakehasnotbeenundulycompromisedbythepresenceofASR.Finally,asaresearcherandaconcernedcitizen,itisdisturbingthatwhentheNRCwasforthetimeconfrontedwithsuchacomplexissueithasnotsubjectedthevariousstudiestoanindependentreviewpanelofinternationalexperts.WhileNRChasstatedthatitconductedaninternalpeerreview,byitsowntermsaninternalpeerreviewisnotindependent.1.1DisclosureIwastherecipientofNRCGrantNo:NRC-HQ-60-14-G-0010titledExperimentalandNumericalInvesti-gationofAlkaliSilicaReactioninNuclearReactorsfromSeptember30,2014toDec.30,2017,andhaveconductedthisevaluationpro-bono.Otherdescribedinseparatedocument.3
