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【英文标准名称】:Nuclearreactorinstrumentation-Pressurizedlightwaterreactors(PWR)-Monitoringadequatecoolingwithinthecoreduringcoldshutdown
【原文标准名称】:核反应堆仪表.压力轻水反应堆(PWR).冷停过程中堆芯充分冷却的监测
【标准号】:BSIEC62117-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-05-15
【实施或试行日期】:2000-05-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:加压水冷反应堆;冷却;核电厂;轻水反应堆;核电站;反应釜;定义;电气工程;规范(验收);安全;反应堆装置;使用条件;仪器装置;核反应堆;校正;验证
【英文主题词】:Calibration;Cooling;Definition;Definitions;Electricalengineering;Instrumentation;Lightwaterreactors;Nuclearpowerplants;Nuclearreactors;Nuclear-electricpowerstations;Operatingconditions;Pressurizedwaterreactors;Reactorinstrumentation;Reactorvessels;Safety;Specification(approval);Verification
【摘要】:ThisInternationalStandardappliestopressurizedwaterreactors(PWRs)withconfigurationssimilartothoseshowninfigures1and2andpresentsrequirementsforthemonitoringofadequatecoolingwithinthecoreduringcoldshutdownoperations.Adequatecorecoolingcanbeachievedonlybyprovidingsufficientcoolantflowtothecoretoremovetheheat.Duringcoldshutdownoperations,corecoolingisprovidedbyforcedcirculationwiththeresidualheatremovalsystem(RHRS).However,incertainshutdownoperationswhenwaterlevelinthereactorpressurevessel(RPV)isreducedformaintenanceoperations,forcedcirculationmaybeinterrupted,andthecoremaybecomeoverheated.ItisimportantthatplantoperatorshavereliableinformationtoconfirmthatthetemperatureandflowofcoolantcirculatedthroughtheRPVisadequatetoremoveheatfromthecore.ThisinformationincludesareliablemeasurementofwaterlevelintheRPVoutletpipingusedforcirculatingtheflowfromthecoretotheRHRS,aswellasmeasurementsoftemperatureandflowofthecoolant.Anunreliablemeasurementofwaterlevelcanresultininterruptionofcoolantflowandoverheatingofthecore,aneventthathasoccurredatseveralPWRs.AnnexA,whichdescribessomeoftheseevents,identifiesconditionswhichshouldbeconsideredinthedesignofcorecoolingmonitoringinstrumentation.GoodinternationalpracticestobeusedwhendesigningneworupgradingexistingPWRcorecoolingmonitorsaresummarizedinthisstandard.RequirementsaregiveninthisstandardforinstrumentationtomonitorcorecoolingforsafeoperationofPWRsduringcoldshutdownoperationswhenthecoolanttemperatureisbelow100℃(212°F).Requirementsforcorecoolingmonitoringduringconditionsbeyondadesignbasisaccident(DBA),whichcouldbeaspecificnationalrequirementorconsideration,arenotcoveredinthisstandard.Thecorecoolingmonitoringinstrumentationforcoldshutdownfunctionswhenthereactorcoolantsystem(RCS)isconfiguredforcoldshutdownmaintenanceorrefuelling.Thecircumstancesunderwhichthesemeasurementsystemsneedtofunctionaredescribedinthisstandard.Descriptionsofdiversemeasuringprinciplesandsuitabledevicesaregiventogetherwithrequirementsforthefollowing:-operationalconditions;-installation;-operatordisplays;-testing,calibrationandmaintenance;-equipmentqualification;-documentation.
【中国标准分类号】:F60
【国际标准分类号】:27_120_20
【页数】:28P;A4
【正文语种】:英语