【英文标准名称】:StandardGuideforIn-PlantPerformanceEvaluationofAutomaticPedestrianSNMMonitors
【原文标准名称】:行人区自动SNM监视器的内部性能评定标准指南
【标准号】:ASTMC993-1997(2003)
【标准状态】:现行
【国别】:
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C26.12
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:监视器;行人区
【英文主题词】:gammaradiation;materialcontrolandaccountability;neutronradiation;nuclearmaterialsmanagement;radiationdetectors;radiationmonitors;safeguards;security
【摘要】:SNMmonitorsareaneffectiveandunobtrusivemeanstosearchpedestriansforconcealedSNM.FacilitysecurityplansuseSNMmonitorsasonemeanstopreventtheftorunauthorizedremovalofdesignatedquantitiesofSNMfromaccessareas.Dailytestingofthemonitorswithradioactivesourcesguaranteesonlythecontinuityofalarmcircuits.Thein-plantevaluationisawaytoestimatewhetheranacceptablelevelofperformancefordetectingchosenquantitiesofSNMisobtainedfromamonitorinroutineserviceorafterrepairorcalibration.Theevaluationverifiesacceptableperformanceordisclosesfaultsinhardwareorcalibration.Theevaluationusestestsourcesshieldedonlybynormalsourcefiltersandencapsulationand,perhaps,byinterveningportionsofthetransportingindividualrsquo;body.Thetransportingindividualalsoprovidesanotherformofshieldingwhenthebodyinterceptsenvironmentalradiationthatwouldotherwisereachthemonitorrsquo;detectors.Hence,transportingindividualsplayanimportantroleintheevaluationbyreproducinganimportantconditionofroutineoperation.Theevaluation,whenappliedasaroutine-operationalevaluation,providesevidenceforcontinuedcompliancewiththeperformancegoalsofsecurityplansorregulatoryguidance.Itistheresponsibilityoftheusersofthisevaluationtocoordinateitsapplicationwiththeappropriateregulatoryauthoritysothatmutuallyagreeableevaluationfrequency,testsources,wayoftransportingthetestsource,numberoftest-sourcepassages,andnuisance-alarm-rategoalsareused.Agreedwrittenproceduresshouldbeusedtodocumentthecoordination.1.1ThisguideisaffiliatedwithGuideC1112onspecialnuclearmaterial(SNM)monitors,GuideC1169onlaboratoryperformanceevaluation,andGuideC1189oncalibratingpedestrianSNMmonitors.Thisguidetoin-plantperformanceevaluationisacomparativelyrapidwaytoverifywhetherapedestrianSNMmonitorperformsasexpectedfordetectingSNMorSNM-liketestsources.1.1.1In-plantperformanceevaluationshouldnotbeconfusedwiththesimpledailyfunctionaltestrecommendedinGuideC1112.In-plantperformanceevaluationtakesplacelessoftenthandailytests,usuallyatintervalsrangingfromweeklytoonceeverythreemonths.In-plantevaluationsarealsomoreextensivethandailytestsandmayexaminebothamonitor''snuisancealarmrecordanditsdetectionsensitivityforaparticularSNMoralternativetestsource.1.1.2In-plantperformanceevaluationalsoshouldnotbeconfusedwithlaboratoryperformanceevaluation.In-plantevaluationiscomparativelyrapid,takesplaceinthemonitor''sroutineoperatingenvironment,anditsresultsarelimitedtoverifyingthatamonitorisoperatingasexpected,ortodisclosingthatitisnotandneedsrepairorrecalibration.1.2In-plantevaluationisonepartofaprogramtokeepSNMmonitorsinproperoperatingcondition.Everymonitorinafacilityisevaluated.Therearetwoapplicationsofthein-plantevaluation:oneusedduringroutineoperationandanotherusedaftercalibration.1.2.1RoutineOperationalEvaluation-Inthisformoftheevaluation,nuisancealarmrecordsforeachmonitorareexamined,andeachmonitor''sdetectionsensitivityisestimatedduringroutineoperation.Theroutineoperationalevaluationisintendedtoreassuretheplantoperator,andhisregulatoryagency,thatthemonitorisperformingasexpectedduringroutineoperation.Thisevaluationtakesplacewithoutpretesting,recalibration,orotheractivitythatmightchangethemonitor''soperation,andtheevaluationsimulatesthenormaluseofthemonitor.1.2.2Post-CalibrationEvaluation-Thisformoftheevaluationispartofamaintenanceprocedure;itshouldalwaysfollowscheduled......
【中国标准分类号】:M73
【国际标准分类号】:93_080_30
【页数】:7P.;A4
【正文语种】: