RG1.171 核电厂安全系统中使用的数字计算机软件的软件单元测试 1997

U.S.NUCLEARREGULATORYCOMMISSIONREGULATORYGUIOFFICEOFNUCLEARREGULATORYRESEARCHREGULATORYGUIDE1.171(DraftwasDG-1057)SOFTWAREUNITTESTINGFORDIGITALCOMPUTERSOFTWAREUSEDINSAFETYSYSTEMSOFNUCLEARPOWERPLANTSA.INTRODUCTIONIn10CFRPart50,DomesticLicensingofProductionandUtilizationFacilities,paragraph55a(a)(1)requires,inpart,1thatsystemsandcomponentsbedesigned,tested,andinspectedtoqualitystandardscommensuratewiththesafetyfunctiontobeperformed.Criterion1,QualityStandardsandRecords,ofAppendixA,GeneralDesignCriteriaforNuclearPowerPlants,to10CFRPart50requires,inpart,1thataqualityassuranceprogrambeestablishedandimplementedinordertoprovideadequateassurancethatsystemsandcomponentsimportanttosafetywillsatisfactorilyperformtheirsafetyfunctions.AppendixB,QualityAssuranceCriteriaforNuclearPowerPlantsandFuelReprocessingPlants,to10CFRPart50describescriteriathataqualityassuranceprogramforsystemsandcomponentsthatpreventormitigatetheconsequencesofpostulatedaccidentsmustmeet.Inparticular,besidesthesystemsandcomponentsthatdirectlypreventormitigatetheconsequencesofpostulatedaccidents,thecriteriaofAppendixBalsoapplytoallactivitiesaffectingthesafety-relatedfunctionsofsuchsystemsandcomponentsasdesigning,purchasing,installing,testing,operating,maintaining,ormodifying.Aspecificl1nthisregulatoryguide,manyoftheregulationshavebeenparaphrased;see10CFRPart50forthefulltext.requirementiscontainedin10CFR50.55a(h),whichrequiresthatreactorprotectionsystemssatisfythecriteriaofIEEEStd279-1971,CriteriaforProtectionSystemsforNuclearPowerGeneratingStations.2Paragraph4.3ofIEEEStd279-19713statesthatqualityofcomponentsistobeachievedthroughthespecificationofrequirementsknowntopromotehighquality,suchasrequirementsfordesign,inspection,andtest.ManyofthecriteriainAppendixBto10CFRPart50containrequirementscloselyrelatedtotestingactivities.CriterionI,Organization,requirestheestablishmentandexecutionofaqualityassuranceprogram.CriterionH,QualityAssuranceProgram,requires,inpart,thattheprogramtakeintoaccounttheneedforspecialcontrols,processes,testequipment,tools,andskillstoattaintherequiredquality,aswellastheneedforverificationofqualitybyinspectionandtest.CriterionIII,DesignControl,requires,inpart,thatmeasuresbeestablishedforverifyingandcheckingtheadequacyofdesign,suchasbytheperformanceofa2RevisionIofRegulatoryGuide1.153,CriteriaforSafetySystems,endorsesIEEEStd603-1991,CriteriaforSafetySystemsforNuclearPowerGeneratingStations,asamethodacceptabletotheNRCstaffforsatisfyingtheNRC'sregulationswithrespecttothedesign,reliability,qualification,andtestabilityofthepower,instrumentation,andcontrolportionsofthesafetysystemsofnuclearpowerplants.3IEEEpublicationsmaybeobtainedfromtheIEEEServiceCenter,445HoesLane,Piscataway,NJ08854.7.USNRCREGULATORYGUIDESTheguidesweIssuedinthefollowingtenbroaddivisions:ReglatoryGuidesareIssuedtodescibeandmakeavlabletothepublicsuchInformslionasmethodsacceptabletotheNRCstafforImplementingspecificpansoftheCom-1.PowerReactors6.Productsmission'sregulations,techniquesusedbythestaffinevaluatingspecificproblemsorpos-2ZResearchandTestReactors7.TransportationtulatedaccdentsaanddataneededbytheNRCstaffInItsreviewofap:icationrsforper-3&FuelsandMaterialsFacilities8.Occupations!Healthmitsandlicensea.Regulatoryguidesarenotsstitutesforregulations,andcompiance4.EnvironmentalandSiting9.AntitustandFinancialReviewwiththemIsnotrequired.Methodsandsolutionsdifferentfromthosesetoutintheguides5.MatrialsandPlantProtection10.GeneralwillbeacceptableIftheyprovideabasisforthefindingsrequisitetotheIssuanceorconlinuanceofapermitorlicensebytheCommission.SinglecopiesofregulatoryguidesmaybeobtainedfreeofchrgebywrlfingtePrinting.Thisguidewaslesuafterconsiderationofcommentsreceivedfromthrepublic.Com-GraphicsanidDistributionBranch.OfficeofAdministrtion,U.S.NuclearRegulatoryCommentsandsuggestionsforinprovementsIntheseguideswencosurgedatallImes,andmission,Washington,DC2055-0001;orbyfoxat(301)415-5272guewillberevised,asappropriate,toaccommodatecommentsandtoreflectnewin=onoraperience.Issuedguidesmayalsobepurchased!fromme*NationalTechnicalInformationServiceonWhittencommentsmaybesubmittedtoteRulesReviewandDirectivesBranch,DFIPS,astandingorderbasis.DetailsonthisservicemaybeobtainedbywritingNTIS,5285PortADM,U.S.NuclearRegulatoryCommission,Washington,DC2055-0001.RoyalRoad,Springfield,VA22161.DESeptember1997suitabletestingprogram,andthatdesigncontrolmeasuresbeappliedtoitemssuchasthedelineationofacceptancecriteriaforinspectionsandtests.CriterionV,Instructions,Procedures,andDrawings,requiresactivitiesaffectingqualitytobeprescribedbydocumentedinstructions,procedures,ordrawingsofatypeappropriatetothecircumstancesandthattheseactivitiesbeaccomplishedinaccordancewiththeseinstructions,procedures,ordrawings.CriterionVfurtherrequiresthatinstructions,procedures,anddrawingsincludeappropriatequantitativeorqualitativeacceptancecriteriafordeterminingthatimportantactivitieshavebeensatisfactorilyaccomplished.CriterionXI,TestControl,requiresestablishmentofatestprogramtoensurethatalltestingrequiredtodemonstratethatstruct