期状态status编写draftedby校核综合

DocumentDraftedCheckedReviewedApprovedModification-AFirstPLANTPHASEⅠ(2×1000MW)文件编DOC.DocumentDraftedCheckedReviewedApprovedModification-AFirstPLANTPHASEⅠ(2×1000MW)文件编DOC. 题SYSTEMMANUAL-Chapter2,3,4,5Function,Generaldesign,Descriptionanddefinitionofequipment,Operating工程Project文件类Document子项Sub-Item设计阶段EngineeringCBA:B:√C:190620-sj 深圳中广核工程设计有限公司NationalAgradeengineeringCertificationNO:190620-CHINANUCLEARPOWERDESIGNCOMPANY,LTD NationalAgradeengineeringCertificationNO:内部编码InternalThisdocumentisthepropertyofCNPDCItmustnotbeused、reproduced、transmittedordisclosedwithoutthepriorwrittenpermissionofCNPDC本文件之产权属于中广核工程设SYSTEMMANUAL-REACHAPTERS2,3,4,Rev版本记REVISION版日状编Drafted校Checked审Reviewed批Approved修改Modification-SYSTEMMANUAL-REACHAPTERS2,3,4,Rev版本记REVISION版日状编Drafted校Checked审Reviewed批Approved修改Modification-SYSTEMMANUAL-REACHAPTERS2,3,4,RevSYSTEMMANUAL-REACHAPTERS2,3,4,Rev文件修改记版日章页修改范围A2010-1-FirstSYSTEMMANUAL-REACHAPTERS2,3,SYSTEMMANUAL-REACHAPTERS2,3,4,Rev2 Main Auxiliary SAFETY 3GENERAL DESIGNBASESANDSAFETY Generaldesign Applicable Storageandsupplyofdemineralizeddeaerated Preparationofboricacid Injectionofchemical StorageofREA4%boricacid SupplyofRCVwithboricacid Sizingof CHOICEOFMATERIAL- Thermal APPENDIX APPENDIX APPENDIX APPENDIX APPENDIX 4DESCRIPTIONSANDDEFINITIONOF 4.1 SYSTEMMANUAL-REACHAPTERSSYSTEMMANUAL-REACHAPTERS2,3,4,RevFunctionalconnectionstoother General Boricacid Water 5OPERATING NORMAL System Reactorcoolantpumpsealcoolingsystem PARTICULARSTEADY Coldshutdownofthe Hotshutdownorhotstandbyofthe Dailyloadfollow PARTICULARTRANSIENT Plant Plant Transientsduetothexenon Tankfilling,makeupor Pressurizerrelieftanksupply Reactorcoolantpumpsealcoolingsystem Fillingofpressurizer,RCVandRRApilot-operatedrelief STARTUPANDNORMAL REAsystem REAsystem OTHER IncidentsandaccidentsrelatedtoREA SYSTEMMANUAL-REASYSTEMMANUAL-REACHAPTERS2,3,4,Rev5.5.2OffREAsystem CONTROL Boricacidbatching 4%boricacidstorage Normalboration Directboration Makeupwaterdilution 4%boricaciddischarge Filter Demineralizedwater Demineralizedwaterpumps(1/2REA001, APPENDIX SYSTEMMANUAL-REACHAPTERS2,3,4,2MainTheboronandwatermakeupsystem(REA)SYSTEMMANUAL-REACHAPTERS2,3,4,2MainTheboronandwatermakeupsystem(REA)isused,inconjunctionwiththechemicalandvolumecontrolsystem(RCV)to:-prepareREA4%andRIS4%boricacidsolutions(7000-7700mg/kgand7000-9000mg/kg)andtostoretheREA4%solution,-adjustthereactorcoolantsystem(RCP)boronconcentrationforslowreactivitycontrolpurposes,-providedemineralizedanddeaeratedwaterandboricacidsolutiontocompensateforRCPleakageorforshrinkageofcoolantinventoryduetocooldowntransients(themakeupsolutionconcentrationisinaccordancewithreactorcoolant-prepareandinjecttotheRCPthefollowingchemicalreagents·hydrazineforoxygencontent·lithiumhydroxideforpH·H2O2foroxygencontentAuxiliaryTheREAsystemisalsoused-providespraywatertothepressurizerrelieftank,incoordinationwithnormalcoolingbythecomponentcoolingsystem(RRI),-provideinitialfillingandmakeupofthefollowingtanks·PTRrefuelingwaterstoragetank(1/2PTR001BA)with1.25%boricsolution(2200±100mg/kg),·RISboroninjectionsurgetank(1/2RIS021BA)withRIS4%boricsolution(7000-9000mg/kg),-fillthevolumecontroltank(1/2RCV002BA)forventing-provideflushingofRCPpumpsNo.3sealbymakeuptothestand(1/2RCP011,021,031BA),-providefillingofpressurizer,RRAandRCVpilotoperatedreliefSYSTEMMANUAL-REACHAPTERS2,3,SYSTEMMANUAL-REACHAPTERS2,3,4,TheREAsystemiscomposedoftwo-thewaterpartwhichisnotsafety--theboricacidpartwhichissafety-TheREAsystemusedinconjunctionwiththeRCVsystemprovidestheboricacidanddemineralizedwaterformakeuptotheRCP.Thesystemisthusessentialinbringingthereactortosafeshutdownandinmaintainingthereactorsubcriticalduringallanticipatedoperationaloccurrences.SYSTEMMANUAL-REACHAPTERS2,3,4,SYSTEMMANUAL-REACHAPTERS2,3,4,3GENERALDESIGNBASESANDSAFETYGeneraldesignTheREAsystemis-toenabletheRCVtoperformitsfunctionofreactivity-toprovidemakeup,intheeventofsmallleakagesorbreaksinthereactorcoolantsystem.WheninoperationthesystemkeepsfueloperationrequirementswithinpermissibleSYSTEMMANUAL-REACHAPTERS2,3,4,SYSTEMMANUAL-REACHAPTERS2,3,4,Applicable*Containmentpenetrationsfollowspecificcriterianotincludedherein(seestandardizeddesignRCC-Pcodeapplicationnote§SAFETYReferencePRCFrenchLNPSunits3&SAR-SubsectionCPR1000standardizeddesignRCC-Pcodeapplicationnote§2.3.5.RCC-P2SeeNuclearIslandsMechanicalEquipmentClassificationList(BLX30000002DOZJ03GN);andI&CandElectricalEquipmentClassificationList(BLX30000105DIYK03GN). ReferencetoparticularengineeringrulesandstandardsRCC-MDesignandConstructionRulesforMechanicalComponentsofPWRNuclearIslands,versionofJun.2000plusthe2002FUNCTIONALRCC-PconditionsincaseoftotallossofthesystemActivecomponentEmergencypowerElectrical*RFS1.3.anot2×100%forboricacidandwaterPumpsSYSTEMMANUAL-REACHAPTERS2,SYSTEMMANUAL-REACHAPTERS2,3,4,*Containmentpenetrationsfollowspecificcriterianotincludedherein(seestandardizeddesignRCC-Pcodeapplicationnote§ENVIRONMENTANDSeparationofredundantActivePassive5.2ExternalattacksagainstwhichthesystemhastobeprotectedSteamPipeTurbine.high.lowMiscellaneousmissiles(includingloaddropfromcranes)AirplaneSafeshutdownDryingNoxiousvapoursorgases(otherthanthosecausedbyfire)Liquids(escapingfrombreaksintheIonizingExplosions:fromin*NotYes,forboronpartYes,forboronNotapplicableYes,forthesafetyclassifiedpartofthecircuitNotapplicableNotapplicableYes,forboronNotnecessaryNotSYSTEMMANUAL-REACHAPTERS2,3,SYSTEMMANUAL-REACHAPTERS2,3,4,*Containmentpenetrationsfollowspecificcriterianotincludedherein(seestandardizeddesignRCC-Pcodeapplicationnote§ParticularprecautionsagainstTornadoandinduced5.3.AttacksonotherPipeNoxiousvapoursorgases(otherthanthosecausedbyfire)FloodingIonizingRCC-I(1983+codeapplicationnote1987)+RCC-I1997(partially)OPERATINGIn-servicePeriodic6.4ProtectionagainstSYSTEMMANUAL-REACHAPTERS2,3,4,StorageandsupplyofSYSTEMMANUAL-REACHAPTERS2,3,4,StorageandsupplyofdemineralizeddeaeratedThedemineralizeddeaeratedwaterrequiredtofulfillthevariousfunctionsmentionedinchapter2isstoredandsuppliedbytheREAsystem.Thewaterisstoredintwotanks(9REA001,002BA),usedforbothplantunits.Theyarebothmembrane-sealedinordertopreventreaeratingthewater.Onetankfeedswatertothetwounits,whilsttheotherisbeingfilledorisonstand-by.ThefirstfillingortheacceleratedfillingofthetanksisperformedbytheSEDsystemviatheauxiliaryfeedwatersystem(ASG)deaeratorataflowrateof60m3/h.Thewatersuppliedisofthesamequalityasthereactorcoolantwater(seesubparagraph.3.2.1).Normaltankfillingataflowrateof27.2m3/hiscarriedoutusingreactorcoolanteffluentspreviouslyreprocessedbytheboronrecyclesystem(TEP).ReprocessinglossesarecompensatedbySEDwatermakeupinintermediatestoragetanks(9TEP002,003,004BA)priorTEPreprocessing.IntheeventoftemporaryTEPsystemfailure,thetanksarefilledusingSEDwaterviatheASGdeaerator.Eachunitissuppliedwithdemineralizeddeaeratedwaterbytwopumps(1/2REA001,Thepumpsdonotoperatepermanently.StartingandstoppingisorderedbylowandhighlevelinthestandpipeofRCPpumpsandbythedifferentmodesofchemicalandvolumecontrolsystemmakeup.InordertoensureoperationduringfailureofnormalpowersupplythepumpmotorsaresuppliedbytheemergencyswitchboardsoftrainsAandB.Peruniteachtrainsuppliesonepump.Ifthewatercontainedinstoragetanks9REA001BAand9REA002BAisaccidentlyreaerated,itcanbereprocessedbytheTEP.Tankdrainingisperformedbyopeningalinebetweenthetanktobedrainedandthemixingpump9TEP007POinlet.Preparationofboricacid(9REA005BA).Crystallizedboricwitharelativedensityof1.4andpurityofover99.9%ismixedwithdemineralized,nondeaeratedwaterfromtheandheatedtoasufficienttemperaturefortheboricacidcrystalstodissolve,untilthechosenconcentrationisreached(seeinappendix5thequantitativeratioboricacid/waterforpreparationofREA4%andRIS4%solutions).InjectionofchemicalChemicalreagentstobeinjectedintothereactorcoolantsystemareintroducedintoachemicalmixingtank.Thereisonetankperunit(1/2REA006BA).SYSTEMMANUAL-REACHAPTERS2,3,4, ThreetypesofchemicalsSYSTEMMANUAL-REACHAPTERS2,3,4, Threetypesofchemicalsare-hydrazinetocontroltheoxygencontentinthereactorcoolantwaterinthereactorstartupoperation,-H2O2tocontroltheoxygencontentinthereactorcoolantwaterinthereactorshutdownoperation.-lithiumhydroxidetocontrolthepHofthereactorcoolantIsotopeconcentrationof7LimustbeoverTheinjectedchemicalsareintroducedmanuallyintothetankandareexpelledbythedemineralizeddeaeratedREAwater.StorageofREA4%boricacidREA4%boricacidsolutions,whicheithercomefromtheTEPsystemorhavebeenpreviouslypreparedinthebatchingtank9REA005BAarestoredbeforeuseinthreetanks.Oneofthetanksiscommontothetwounits(9REA003BA).Thetwoothersareusedoneforeachunit(1/2REA004BA).Inordertopreventthesolutionsbeingreaeratedwithoxygenandcarbondioxidethestoragetanksarekeptunderpressureusinganitrogenblanket.SupplyofRCVwithboricacid4%boricacidsolutionissuppliedbytwopumpsperunit(1/2REA003,004PO).Thepumpsdonotoperatepermanently,sinceboricacidisnotbeingusedallthetime.Dieselgroupsactasemergencypowersupplyforthepumpmotors.ForeachunitthereisatrainApumpandatrainBpump.BoricacidisfilteredduringpumpdischargeIntermediateconcentrationsofboricacidsolutionareobtainedbymixingdemineralizeddeaeratedwaterwith4%boricacidsolution.Theboricacidanddemineralizedwatersupplylinesareprovidedwithaflowcontrolvalve.Inordertopreventinadvertentdilutionduetodemineralizedwaterpump1/2REA001POor1/REA002POoperation,isolationupstreamfromtheRCVissupplementedbyapneumaticvalveinstalledinserieswiththecontrolvalve.Intheeventofanincident,borationflowcanbeincreasedbymeansofadirectborationline,whichbypassesthecontrolvalve.Theisolationvalveofthisline(1/2REA210VB)ismotor-operatedandremote-controlledfromthecontrolroom,emergencystand-bypowerisprovidedbydieselgenerator.Thelineincludesaflowmeasurementtransmittedtothecontrolroom(KIC/KPR)andbackuppanel(BUP).EQUIPMENTREAsystemcomponentsaredesignedtoensurethatthesystemcanSYSTEMMANUAL-REACHAPTERS2,3,4,amaximumdemineralizeddeaeratedwaterflowrateof31m3/h(normalflowrate:anominal4%boricacidsolutionflowrateof16.6m3/h(includingzeroflow:3m3/h)whichcorrespondstoRCVnominalflowrate,sothatnormaltransitionfromSYSTEMMANUAL-REACHAPTERS2,3,4,amaximumdemineralizeddeaeratedwaterflowrateof31m3/h(normalflowrate:anominal4%boricacidsolutionflowrateof16.6m3/h(includingzeroflow:3m3/h)whichcorrespondstoRCVnominalflowrate,sothatnormaltransitionfromfullpowertorefuelingorcoldshutdowncanbeperformedregardlessofthecycleoroffuelburnup.DuringpoweroperationREAdemineralizeddeaeratedwatercharacteristicsarethe-Electricalconductivityat:<-pHat:6.0to-Dissolved:-Total:<-Chlorides+Fluorides:<-Suspended:<-:<-:<-:<-:<Appendixeshereafter2to4givewaterandboricacid SizingofDemineralizeddeaeratedwaterstoragetanks(9REA001,Theeffectivetotalcapacityofthetwotanks(2×300m3)isenoughensuredilutionrequiredtoobtainnominalpowerstartingfromthestateofcoldshutdownoneunit,attheendofthefuelcycle(50mg/kg).Thiscapacityalsocorrespondstothecapacityrequiredtoensuresimultaneoushotshutdownofbothunits,followedbyrenewedstart-upatthexenonpeak(boronconcentrationcorrespondingtohotshutdownisgiveninappendix2takingintoaccountthevarioussituations).Thedemineralized,deaeratedwatertanks9REA001BAand9REA002BAmustcontainatleast80m3(usablevolume)ofwaterperpoweredunitinordertoprovidereactorcoolantwatermakeuprequiredbythecontractionofreactorcoolantliquidduringtransitiontocoldshutdown.Ifoneofthedemineralizedwatertanksisunavailable,thetwounitscanbekeptonpoweroperationiftheothertankcontains160m3(usablevolume)atleast.Oneofthetwounitsmustbeputincoldshutdowniftheusablevolumefallsbelow160m3.SYSTEMMANUAL-REACHAPTERS2,3,4,ThetanksaresurroundedbySYSTEMMANUAL-REACHAPTERS2,3,4,Thetanksaresurroundedbywallsformingaretainingtankwithacapacityof660m3(totalvolumeofthe2tanks).Theexhaustfacilitiesareas-pump9RPE027POwith10m3/hcapacityissetpermanentlyatthebottomoftheretainingtank,-amobilepumpcanbeinstalledoutsidetheretainingtanktoemptyitincaseoftankrupture(seeRPEflowdiagramsheet542).BoricacidbatchingtankTheboricacidbatchingtankisusedtoprepareREA4%andRIS4%boricacidsolutions.Thetankisprovidedwithelectricheaterswhicharedesigned:-toheatdemineralizedwatertothetemperaturerequiredbytheboricacidsolutionwithinabout3hours,-toprovidenecessaryheattodissolveboricacidcrystal-tomaintainthetemperatureinthetanktopreventprecipitationoftheboricThecurveofboricacidsolubilityversustemperatureisgiveninappendixThetankisdesignedtocontaintwodaysofmakeupofboricacidatREA4%necessarytocompensatea230dm3/hprimaryleak.ChemicalmixingtanksChemicalagentstobeinjectedintothereactorcoolantsystemarepreparedinthechemicalmixingtank1/2REA006BA.Thechemicalmixingtankisdesignedtocontainasufficientquantityof35%hydrazinesolutionforoxygenscavengingpurposes.ThetankislargeenoughtocontainthelithiumhydroxideusedasthechemicalcontrolelementforpHcontrol.ThetankislargeenoughtocontaintheH2O2solutionfortheoxygenationpurposesinthereactorshutdownoperation.4%boricacidsolutionstoragetanks(9REA003BA,Overallcapacityoftwotanksissufficienttoensure-coldshutdownofoneunitatbeginningoflife-shutdownforrefuelingoftheotherunitatendoflifeTherequiredvolumesunderthesecircumstancesarethefollowing(seeappendixSYSTEMMANUAL-REACHAPTERS2,3,4,coldshutdownSYSTEMMANUAL-REACHAPTERS2,3,4,coldshutdownatthebeginningoflife(equilibriumcycle):refuelingshutdownattheendoflife:Theeffectivetotalcapacity(usablevolume)ofeach4%boricacidsolutionstoragetank,81m3asspecifiedinthedatasheet(seechapter9.2),meetsprecedingrequirements:Vt1(28.12102.64)65.38m3Foreachtank,aminimumlevelalarmguaranteesthattheamountofboricacidstoredinthistankissufficienttomakethereactorcoresubcriticalwhenthecoldshutdownstateisreached,takingintoaccountthereactivityincreaseduetoxenondecayandassumingthatthecontrolrodassemblypresentingthehighestnegativereactivityisblockedoutofthecoreinfullywithdrawnposition.Themorepenalizingcaseforsizinglevelalarmisatthebeginningoflife,coldshutdownafterahotstandby(xenonpeak)followingafullrateoperation.ThecorrespondingvolumeisDemineralizedwaterpumps(1/2REA001,TherearetwowaterpumpsperEachpumpissizedtogiveanominalflowrateofOnepumpissufficienttomeetthereactorneedsandispresettoAsthereisnocontinuousneedofdemineralizedwaterthepresetpumpisusedintermittently.Itsnormalsituationisonstandby.Thepumpsareprovidedwithbackuppowerbytheemergencydieselgenerators.OneofthepumpsoperatesontrainAandtheotherontrainB.4%boricacidpumps(1/2REA003,Therearetwo4%boricacidpumpsperFornormaloperationonepumpissufficienttomeetthereactorneedsandispresettoEachpumpisdesignedtosupplyaborationflowof21m3/h(directborationpath)foraperiodofanhourandahalfinordertoreachcoldshutdownfromhotshutdownfollowingalossoffeedwater.Thepumpsareprovidedwithbackuppowerbytheemergencydieselgenerators.OneofthepumpsoperatesontrainAandtheotherontrainB.BoricacidfilterSYSTEMMANUAL-REACHAPTERS2,3,4,BoricacidsolutionisSYSTEMMANUAL-REACHAPTERS2,3,4,BoricacidsolutionisfilteredbeforebeinginjectedintotheRCPTheboricacidfilter(oneperunit)islocateddownstreamfromtheboricacidtransferpumps,itisdesignedtoaccommodateamaximumflowrateof27.2m3/handhavearemovalefficiencyofover98%for5micrometersandlargerparticles.3.3CHOICEOFMATERIAL-3.3.1MetalpartsofthesystemareentirelyconstructedofausteniticstainlessFiltermaterialsandtankmembranesealsshallbeguaranteedtocontainnohalogencompounds(chlorine,fluorine).3.3.2Theentireplantismadeofweldedmaterials,exceptforthefollowingwhichareconnectedbyflanges:-waterandboricacid-temporaryfiltererectedattheboricacidandwatermakeuppumpsuctionduringsystemcommissioningoperations,-flowlimitingorifice-flowmeasurementorifice-butterfly3.3.3ThermalAllpiping,valves,componentsandinstrumentconnectionslikelytocontainRIS4%boricacidsolutionareelectricallyheattracedbytheboronheatingsystem(RRB)andlaggedtopreventprecipitationoftheboricacid.ThelinescontainingtheREA4%boricacidsolutionareheattracedandlaggedonlyoutsideheatedrooms,accordingtotheirTheminimumsitetemperaturebeingabovethewaterfreezingpoint,itisnotnecessarytoinstallelectricalheatersonthedemineralizedwatertanks.SYSTEMMANUAL-REACHAPTERSSYSTEMMANUAL-REACHAPTERS2,3,4,RevSYSTEMMANUAL-REACHAPTERS2,3,4,BORICACIDREQUIREMENTSTOPERFORMHOTFULLPOWER,HOTSHUTDOWN,REFUELLING(ORMAINTENANCE)ANDCOLD BoronconcentrationvaluesSYSTEMMANUAL-REACHAPTERS2,3,4,BORICACIDREQUIREMENTSTOPERFORMHOTFULLPOWER,HOTSHUTDOWN,REFUELLING(ORMAINTENANCE)ANDCOLD Boronconcentrationvaluesdetermined--SBandSCbanksfullywithdrawnfromthereactorThecontrolrodpresentingthehighestnegativereactivityblockedoutofthecoreinfullywithdrawnposition.AllothercontrolrodsinsertedinthereactorWith100mg/kg- BORONCONCENTRATIONREACTORCOOLANTENDOFHotfullpower,equilibrium0Xenon0Refuelingor22002200(0Xenon)SYSTEMMANUAL-REACHAPTERS2,3,4,APPENDIX2REA4%BORICACIDVOLUMESREQUIREDFORSHUTDOWNENDOFSYSTEMMANUAL-REACHAPTERS2,3,4,APPENDIX2REA4%BORICACIDVOLUMESREQUIREDFORSHUTDOWNENDOFREFUELLINGREFUELLINGToreachshutdownCompensationofTotalvolumeDesignColdshutdownRefuelingshutdownMinimumvolumeperVt1(28.12102.64)65.38m3SYSTEMMANUAL-REACHAPTERS2,3,4,Rev WATERANDBORICACIDREQUIREMENTReactorcoolant1st2200mg/kgBoron-285Pressurizerrelief1st--AboutAboutReactorcoolantAboutSYSTEMMANUAL-REACHAPTERS2,3,4,Rev WATERANDBORICACIDREQUIREMENTReactorcoolant1st2200mg/kgBoron-285Pressurizerrelief1st--AboutAboutReactorcoolantAbout<Boricacidstorage1st-244.5m3for2-DuringChemicalmixingWater+LiOH+-<1stAbout-AboutBoroninjectiontankandrecirculationloop1stconcent.solution---1st-AboutVolumecontroltankandchargingpumpssuctiontoRCPLoad<<AboutSYSTEMMANUAL-REACHAPTERS2,3,4,BORICACIDCONCENTRATION*SYSTEMMANUAL-REACHAPTERS2,3,4,BORICACIDCONCENTRATION*Roomtemperatureismaintainedbetween22andMASSTEMPERATUREBORICACIDSOLUTIONSOLUBILITYMin.Max0Min.Max.Min.Max.*Min.Max.35toSYSTEMMANUAL-REACHAPTERSSYSTEMMANUAL-REACHAPTERS2,3,4,APPENDIX5QUANTITATIVERATIOBORICACID/WATERFOR4%SYSTEMMANUAL-REACHAPTERS2,3,4,4DESCRIPTIONSANDDEFINITIONOFTheREAsystemisdescribedinthefollowingflow-(boron--SYSTEMMANUAL-REACHAPTERS2,3,4,4DESCRIPTIONSANDDEFINITIONOFTheREAsystemisdescribedinthefollowingflow-(boron--(demineralizedwater-FunctionalconnectionstootherConnectionstofluid-ASG:AuxiliaryFeedwater-PTR:ReactorCavityandSpentFuelPitCoolingSystem(viapipingoftheRIS-RAZ:NitrogenDistribution-RCP:ReactorCoolant-RCV:ChemicalandVolumeControl-REN:Nuclearsampling-RIS:SafetyInjection-RPE:VentandDrain-RRA:ResidualHeatRemoval-RRB:BoronHeating-SAR:InstrumentCompressedAirDistribution-SED:DemineralizedWaterDistributionSystem(Nuclear-TEP:BoronRecycleElectricalsystem-LLD:LVACEmergencynetwork-380V(Train-LLN:LVACEmergencynetwork-380V(Train-LLO:LVACEmergencynetwork-380V(TrainSYSTEMMANUAL-REACHAPTERS2,3,4,-LBA:110VDCPowersupply(Train-LBB:110VDCPowersupply(TrainSYSTEMMANUAL-REACHAPTERS2,3,4,-LBA:110VDCPowersupply(Train-LBB:110VDCPowersupply(Train-LCA:Unit48VDCPowersupply(Train-LCB:Unit48VDCPowersupply(Train-LVACNetwork-380V-LBG:110VDCPowersupply-LCD:Common48VDCPowersupply-LNA:Vital220VACpower(protection-LNB:Vital220VACpower(protection-LNG:Uninterrupted220VACpowersupply-LNE:Uninterrupted220VACpowersupply-LNH:Uninterrupted220VACpowersupply-LNP:Uninterrupted220VACpowersupply-LNF:Commonuninterrupted220VACpower-LHA:6.6kVEmergencysupply(TrainA-Load-LHB:6.6kVEmergencysupply(TrainB-LoadOther-KSC:Maincontrol-KIC:Plantcomputerinformation&-KPR:Remoteshutdown-KSN:Nuclearauxiliarybuilding-Localcontrolpanelsand-KCP:Non-SafetyProcessControlCabinet-KCS:SafetyProcessControlCabinet-DVN:NABventilationSYSTEMMANUAL-REACHAPTERS2,3,4,GeneralWaterCircuitsSYSTEMMANUAL-REACHAPTERS2,3,4,GeneralWaterCircuitsconnectingtanksandThetwopumpsofeachunitcanbesuppliedbyasingletank,whiletheothertankisbeingfilledorisonstandby.PumpThepumpsarearrangedsymmetrically.Theycanbeisolatedbymeansofmanualvalveslocatedupstreamanddownstreamfromeachpump.Thevalvesarepadlockedopenduringnormaloperation.Eachpumphasaminiflowline.Thelinedirectstheflowtowardstheappropriatetank.DrainingofatankforreprocessingbytheTEPThisiscarriedoutbymeansofthethree-inchline9REA0211connectedtotheTEPintermediatestoragetanks9TEP002,003,004BA.RCVwaterWaterisinjectedintotheRCVsystemviathecontrolvalve1/2REA016VD.Flowismeasuredby1/2REA010MD.Then,itissprayedintothevolumecontroltankthroughvalve1/2RCV154VP(slowdilutionline)orinjectedsimultaneouslythroughvalves1/2RCV154VPand1/2REA018VB(fastdilutionlinetoRCVpumpssuction).Boricacid PreparationandstorageofboricacidREA4%andRIS4%boricacidsolutionsarepreparedin9REA005BAtank.Thesesolutionsaredrainedoff,dependingonthetypeofsolution:-bygravitytotank1/2RIS021BAfortheRIS4%boricacid-bymeansofpump1/2REA003POor1/2REA004POtotanks9REA003BAor1/2REA004BA,fortheREA4%boricacidsolution.Onlythefirstfillingoftanks9REA003BAand1/2REA004BAiscarriedoutviatank9REA005BA.Thesetanksarenormallyfilledfromtheconcentratemonitortank9TEP007BA.Storagetanksarekeptunderaconstantnitrogenblanket(inordertopreventreaerationofthesolutionbyoxygenandbycarbondioxide).Eachtank9REA003BAand1/2REA004BASYSTEMMANUAL-REACHAPTERS2,3,4,-asafetyvalve:respectively9REA175VBSYSTEMMANUAL-REACHAPTERS2,3,4,-asafetyvalve:respectively9REA175VBand-adraintothe-avacuumreliefvalverespectively9REA071VZand1/2REA070VZtoprotectthetankagainstvacuum,-abackpressurecontrolvalveconnectedtotheRPEsystem:respectively9REA173VZand1/2REA172VZ.TransfertotheRCVOnrequestfromtheRCVsystem,oneofthetwoboricacidtransferpumps(1/2REA003POor1/2REA004PO)isstartedupforinjection,afterfiltration,of4%boricacidsolutiontotheRCVsystemthroughoneofthefollowinglines:-theautomaticmakeupline(throughvalves1/2RCV154VPand-themakeupbypassline(throughmanualvalve1/2REA205VB)usedifthenormalmakeuplineisunavailable,-thedirectborationline(throughvalve1/2REA210VB)tothechargingpumpssuctionside.Aminimumflowprotectionfortheboricacidtransferpumpsisprovided(theflowgoesbacktotheboricacidtank).Apumpcanbeperiodicallyusedtorecirculatethecontentsofthetanksinordertoassuremoreuniformboronconcentrationinthetanks.InjectionofInjectioniscarriedoutbymeansofdemineralizedwaterpumps,inthesuctionbarrelofthechargingpumpsusingthechemicalmixingtank1/2REA006BA.ConnectionwiththePTRTheREAsystemensuresthattherefuelingwaterstoragetank1/2PTR001BAisfilledviaasectionoftheRISsystem.Thepipingisprovidedwithtwoisolationvalves(1/2REA200VBand1/2REA202VB)andacheckvalve(1/2REA201VB).ThecheckvalveprotectstheREAsystemfrominadvertentwaterreturnoriginatingfromtheRISsystem.Thefillingandthepossiblemakeuparemademanuallybytheoperator.Inreturntherefuelingwaterstoragetank1/2PTR001BAprovidesthefinalemergencysupplyof1.25%(2200±100mg/kgboron)boricacidsolution.ThissupplyisprovidedviatheRISsystemwithboricacidpumpsuctionbymeansofpipingisolatedbyvalve1/2REA192VB.SYSTEMMANUAL-REACHAPTERS2,3,4,Auxiliaryfluidproperties(flow.pressure.quality)oftheSED,SARandRAZsystemsaregivenintheappropriatesystemmanuals.ForthecharacteristicsofboricacidsolutionsSYSTEMMANUAL-REACHAPTERS2,3,4,Auxiliaryfluidproperties(flow.pressure.quality)oftheSED,SARandRAZsystemsaregivenintheappropriatesystemmanuals.Forthecharacteristicsofboricacidsolutionsseechapter3,appendices4andSeedatasheets(chapterAllequipmentisinstalledintheNuclearAuxiliaryBoricacidLoadingofboricacidanhydridecrystalswhicharedeliveredinsealedcontainersisperformedatlevel+15.70m.WaterUNITUNIT1/2REA001,9REA001,UNITUNIT+1/2REA003,NB++SYSTEMMANUAL-REACHAPTERS2,3,4, 5OPERATINGTheREAsystemisalwaysavailablewhatevertheSYSTEMMANUAL-REACHAPTERS2,3,4, 5OPERATINGTheREAsystemisalwaysavailablewhateverthestateoftheREAsystemoperationcorrespondstonormalplantoperation.Thesystemisconsequentlydesignedtorespondtoallboration,dilutionandmakeuprequirementsduringnormalreactorcoolantsystemoperation.Duringnormaloperation,theREAsystemconfigurationisas-thepresetdemineralizedwaterpumpisarrangedsuchastostartonrequestandtheotherisonshutdown,-thepresetboricacidtransferpumpisavailableandcanbestartedorstoppedbythemakeupcontrolsystem.Theotherpumpisonshutdown,-controlvalvesareunderautomatic-theboronmakeupconcentrationisevaluatedbyanautomaticdeviceonthebasisofthewaterandboronflowratesetpointssetbytheoperator(seechapters6.1and6.3),-themakeupconcentrationvalueiscomparedtothereactorcoolantconcentrationmeasuredbytheboronmeter(seeRENsystemmanual).SystemThesystemoperatesinseveraldifferentmodes.Eachmodeispresettooperateautomatically.Themodesare:-automatic-slow-fast--manualForeachmode,appendices1to5showinasimplifieddiagramthe"active"partofthesystemlogic.Refertochapter6.2forthefulllogicdiagramofthemakeupsystem.SYSTEMMANUAL-REACHAPTERS2,3,4,SYSTEMMANUAL-REACHAPTERS2,3,4,AutomaticAutomaticmakeupisusedduringnormalsteadystatereactoroperation.Itsuppliesaboricacidsolutionattheconcentrationprevailinginthereactorcoolantsystemandisusedtocompensatesmallleakage.Theconcentrationforautomaticmakeupispresetbytheoperator.Demineralizedwaterflowratesetpointiseithersetbytheoperator(intheMainControlRoom)orpreset(intheKICTEC4station).Boricacidflowissetinthecontrolroomtoobtainamakeupconcentrationequaltoreactorcoolantconcentration.Analarmindicatesthatthemakeupconcentrationistoolowcomparedtoreactorcoolantconcentration.Automaticmakeupisstartedandstoppedbyvolumecontroltanklevelsignals(1/2RCV012MN)asfollows:-alowlevelsignalstartsonedemineralizedwaterpump,opensisolationvalves1/2REA015VDand1/2REA018VBand1/2RCV154VP,starts