RG1.102 洪水防护 1976

U.S.NUCLEARREGULATORYCOMMISSIONREGULATORYGUIDEOFFICEOFSTANDARDSDEVELOPMENTRevision1September1976REGULATORYGUIDE1.102FLOODPROTECTIONFORNUCLEARPOWERPLANTSA.INTRODUCTIONGeneralDesignCriterion2,DesignBasesforProtection.AgainstNaturalPhenomena,ofAppendixA,GeneralDesignCriteriaforNuclearPowerPlants,to10CFRPart50,LicensingofProductionandUtilizationFacilities,requiresthatstructures,systems,andcomponentsimportanttosafetybedesignedtowithstandtheeffectsofnaturalphenomenasuchasfloods,tsunami,andseicheswithoutlossofcapabilitytoperformntheirsafetyfunctions.Criterion2alsorequiresthatthedesignbasesforthesestructures,systems,andcomponentsreflect:1.Appropriateconsiderationofthemostseverenaturalphenomenathathavebeenhistoricallyreportedforthesiteandsurroundingregion,withsufficientmarginforthelimitedaccuracyandquantityofthe2historicaldataandtheperiodoftimeinwhichthedatahavebeenaccumulated;2.Appropriatecombinationsoftheeffectsofnormalandaccidentconditionswiththeeffectsofthenaturalphenomena;and3.Theimportanceofthesafetyfunctionstobeperformed.Paragraph100.10(c)of10CFRPart100,ReactorSiteCriteria,requiresthatphysicalcharacteristicsofthesite,includingseismology,meteorology,geology,andhydrology,betakenintoaccountindeterminingtheacceptabilityofasiteforanuclearpowerreactor.AppendixA,SeismicandGeologicSitingCriteriaforNuclearPowerPlants,to10CFRPart100identifiestheinvestigationsnecessaryforadetailedstudyofseismicallyinducedfloodsandwaterwaves.Theappendixrequiresthatdesignbasesforseismicallyinducedfloodsandwaterwavestakeintoconsiderationtheresultsofgeologicandseismicinvestigationsandthatthesedesignbasesbetakenintoaccountinthedesignofthenuclearpowerplant.RegulatoryGuide1.59,DesignBasisFloodsforNuclearPowerPlants,describesacceptablemethodsofdeterminingthedesignbasisfloodconditionsthatnuclearpowerplantslocatedonsitesalongstreamsmustwithstandwithoutlossofsafety-relatedfunctions.Italsodiscussesthephenomenaproducingcomparabledesignbasisfloodsforcoastal,estuary,andGreatLakessites.Theguidestatesthatexamplesofthetypeoffloodprotectiontobeprovidedfornuclearpowerplantswillbethesubjectofaseparateregulatoryguide.ThisguidedescribestypesoffloodprotectionacceptabletotheNRCstaffforthesafety-relatedstructures,systems,andcomponentsidentifiedinRegulatoryGuide1.29.*Inaddition,thisguidedescribesacceptableRegulatoryGuide1.29,SeismicDesignClassification,Identifiesstructures,systems;andcomponentsoflight-water-coolednuclearpowerplantsthatshouldbedesignedtowithstandtheeffectsoftheSafeShutdownEarthquakeandremainfunctionaLThesestructures,systems,andIcomponents-arethosenecessarytoensure(1)theintegrityofthereactorcoolantpressureboundary,(2)thecapabilitytoshutdownthereactorandmaintainitinasafeshutdowncondition,or(3)thecapabilitytopreventormitigatetheconsequencesofaccidentsthatcouldresultinpotentialoffsiteexposurescomparabletotheguidelineexposuresof10CFRPart100.Thesestructures,systems,andcomponentsshouldalsobedesignedtowithstandconditionsresultingfromthedesignbasisfloodandremainfunctional.Itisexpectedthatsafety-relatedstructures,systems,andcomponentsofothertypesofnuclearpowerplantswillbeidentifiedinfutur6regulatoryguides.Intheinterim,RegulatoryGuide1.29shouldbeusedasguidancewhenidentifyingsafety-relatedstructures,systems,andcomponentsofothertypesofnuclearpowerplantsthatneedtobeprotectedfromfloodsbymethodssuchasthosesuggestedinthisguide.USNRCREGULATORYGUIDESCommentsshouldbesenttotheSecretaryoftheCommission,U.S.NuclearRegulatoryCommission.Washington.D.C.U5.Attention:DockotingendRegulatoryGuidesweissuedtodescribeandmakeavailabletothepublicsecesection.methodsaiceptabletotheNRCstaffofImplementingspecificpartsoftheCommission'sregulations,todelineatetechniquesusedbythestaffinovalu-Theguidesareissuedinthefollowingtonbroaddivisions:stingspecificproblemsOrpostulatedaccidents.ortoprovideguidancetoapplicents.RegulatoryGuidesarenotsubstitutesforregulations,andcomplianceI.PowerReactorsS.Productswiththemisnotrequired.Methodsandsolutionsdifferentfromthosesetoutin2.ResearchandTestReactors7.Transportationtheguideswillbeacceptableiftheyprovideabasisforthefindingsrequisiteto3.FuelsandMaterialsFacilitiesS.OccupationalHealththeissuanceorcontinuanceofapermitorlicensebytheCommission.4.EnvironmentelandSiting9.AntitrustReviewCommentsandsuggestionsforimprovementsintheseguidesareencouragedS.MaterialsandPlantProtection10.Generalatalltimes.andguideswillberevised.asappropriate.toaccommodatecommentsandtoreflectnewinformationorexperience.ThisguidewasrevisedasaCopiesofpub4ishedguidesmaybeobtainedbywrittenrequestindicatingtheresultofsubstantivecommentsreceivedfromthepublicandadditionalst&ffdivisionsdesiredtotheU.S.NuclearRegulatoryCommission.Washington.D.C.review.2=5.Attention:Director.OfficeofStandardsDevelopment.methodsofprotectingnuclearpowerplantsfromtheeffectsofPrbbableMaximumPrecipitation(PMP)fallingdirectlyonthesite.*B.DISCUSSIONNuclearpowerplantstructures,systems,andcomponentsimportanttosafetyshouldbedesignedtowithstand,withoutlossofcapabilitytoperformtheirsafetyfunctions,themostseverefloodcondition