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DraftedCheckedReviewedApprovedModification-AFirstPLANTPHASEI(2×1000MW)BLX17SEK046DIYK45SystemDesignManual-Chapter6.6,6.7OperatingprincipleandsupplyfailureProjectDocumentSub-ItemEngineeringBasicAA:B:√C:22420070005NationalAgradeengineeringdesigning,CertificationNO NationalAgradeengineeringCertificationNO:內(nèi)部編碼InternalThisdocumentisthepropertyofCNPDCItmustnotbeused、reproduced、transmittedordisclosedwithoutthepriorwrittenpermissionofCNPDC本文件之產(chǎn)權(quán)屬于中廣核工程設(shè)計(jì)有限公司。未獲本公司書面REVISIONDraftedCheckedReviewedApprovedAJiangFirstPLANTPHASEI(2×1000MW)ConventionalIslandLiquidWasteCollectionSystemDesignManual-SEKChapter6.6,6.7OperatingprincipleandsupplyfailureanalysisSEPTEMBER,2011AFirst Rev TOC\o"1-2"\h\z\u Operationincaseofincidentand/or Lackof Lossofcontrol Lossof380VACpower OPERATINGOnstartupthestarterselectorswitchesforthepumps001PO,002PO,003PO,004PO,005PO,006PO,007PO,008PO,009POand010POmustbesetto“remote”attheswitchgear.Themodeselectorswitchonthemotoroperatedvalveactuator001VK,002VKmustbesettothe“remote”position.ThepumpsandvalvesinthePLCcontrolsystemmustinautomode.Thesystemwillthencommencetooperateautomatically,asdescribedbelow.DrainsoilyactivecoolingsumpInnormaloperationdrainswaterentersthissumpfromtheoilyactivedrainssystem.Thewaterisdischargedfromthesumpbymeansoftwosubmersiblepumps(007POand008PO)andonesmallsubmersiblepump(009PO).Thepumpsandsumpinletvalve002VKareoperatedfromfivelevelswitchesasfollows:(R=rising,F=falling)LowLowStoppump(R)PermitstartLow(F)No(R)StartpumpHighChangeovertheduty(R)Startdutypump007POor008POPermitstartatpump007PO/008POStoppump009POafter10sHigh-high(F)No(R)Startstandbypump007POorEmergencyOpeninletvalve(R)Closeinletvalve002VKKICalarm005KAStoppump001PO,002PO,003PO,ClosecoolingvalveThedutypumpisautomaticallyalternatedaftereachpumpValve002VTcontrolsthesupplyofcoolingwaterintothissump.Onreceivingahighdrainswatertemperaturesignal(>50℃)fromatemperatureswitchinthesump,thevalveopens.Thevalveclosesagainwhenthedrainswatertemperaturehasfallento6.61.3DrainsNon-oilyactivecoolingsumpInnormaloperationdrainswaterentersthissumpfromthenon-oilyactivedrainssystem.Thewaterisdischargedfromthesumpbymeansoftwosubmersiblepumps(010POand011PO)andonesmallsubmersiblepump(012PO).Thepumpsandsumpinletvalve001VKareoperatedfromfivelevelswitchesasfollows:(R=rising,F=falling)LowLowStoppump(R)PermitstartpumpLow(F)No(R)StartpumpHighChangeovertheduty(R)Startdutypump010POor011POPermitstartatpump010PO/011POStoppump012POafter10sHigh-high(F)No(R)Startstandbypump010POorEmergencyOpeninletvalve(R)Closeinletvalve001VKKICalarm006KAStoppump005PO,006POClosecoolingvalveThedutypumpisautomaticallyalternatedaftereachpumpValve001VTcontrolsthesupplyofcoolingwaterintothissump.Onreceivingahighdrainswatertemperaturesignal(>50℃)fromatemperatureswitchinthesump,thevalveopens.ThevalveclosesagainwhenthedrainswatertemperaturehasfallentoOilydrainagetransitionpumpsumpInnormaloperationdrainswaterentersthissumpissenttotheoilyactivedrainssystem.Thewaterisdischargedfromthesumpbymeansoftwosubmersiblepumps001POand002PO.Thepumpsoperatedfromthreelevelswitchesasfollows:(R=rising,LowStop(R)NoHighChangeovertheduty(R)Startdutypump001PO/002POPermitstartpumpHigh-high(F)No(R)Startstandbypump001PO/002POKICalarm002KAThedutypumpisautomaticallyalternatedaftereachpumpOilydrainagetransitionpumpsumpInnormaloperationdrainswaterentersthissumpissenttotheoilyactivesystem.Thewaterisdischargedfromthesumpbymeansoftwosubmersiblepumps003POand004PO.Thepumpsoperatedfromthreelevelswitchesasfollows:(R=rising,LowStop(R)NoHighChangeovertheduty(R)Startdutypump003PO/004POPermitstartpumpHigh-high(F)No(R)Startstandbypump003PO/004POKICalarm003KAThedutypumpisautomaticallyalternatedaftereachpumpDrainsNon-oilydrainagetransitionpumpsumpInnormaloperationdrainswaterentersthissumpfromthenon-oilyactivedrainssystem.Thewaterisdischargedfromthesumpbymeansoftwosubmersiblepumps005POand006PO.Thepumpsoperatedfromthreelevelswitchesasfollows:(R=rising,LowStop(R)NoHighChangeovertheduty(R)Startdutypump005PO/006POPermitstartpumpHigh-high(F)No(R)StartstandbypumpKICalarmThedutypumpisautomaticallyalternatedaftereachpumpShutdownEachofthepumps001PO,002PO,003PO,004PO,005PO,006PO,007PO,009PO,010PO,011POand012POmaybestoppedfromalocalPLCcontrolEachmotor-drivenpump001PO,002PO,003PO,004PO,005PO,006PO,008PO,009PO,010PO,011POand012POmaybestoppedattheswitchgearbymovingtheselectorswitchoutoftheremoteposition.Operationincaseofincidentand/orIntheeventofbothpumps007POand008POnotoperatingorjustoneofthepumpsnotoperatingunderHHlevel,thewaterintheoilycoolingsumpmaycontinuetorisetoemergencylevel.Wheninfirefightingstatus,theflowismorethanpumps007POand008POcandischarge,thewaterlevelmayrisetoemergencylevellikewise.Whenattheemergencylevel,analarmissenttotheKIC,andthe002VK,002VTareclosed.Sothe001PO,002PO,003POand004POwillstopautomatically.Intheeventofbothpumps010POand011POnotoperatingorjustoneofthepumpsnotoperatingunderHHlevel,thewaterinthenon-oilycoolingsumpmaycontinuetorisetoemergencylevel.Wheninfirefightingstatus,theflowismorethanpumps010POand011POcandischarge,thewaterlevelmayrisetoemergencylevellikewise.Whenattheemergenc