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DocumentDraftedCheckedReviewedApprovedAFirstPLANTPHASEI(2×1000MW)文件编码DOC. DocumentDraftedCheckedReviewedApprovedAFirstPLANTPHASEI(2×1000MW)文件编码DOC. SED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandsupplyfailureProjectDocumentSub-ItemEngineeringCAA:B:√C: 深圳中广核工程设计有限公司NationalAgradeengineeringCertificationNO: NationalAgradeengineeringCertificationNO:内部编码InternalCP0905-YK-GN-ThisdocumentisthepropertyofCNPDCItmustnotbeused、reproduced、transmittedordisclosedwithoutthepriorwrittenpermissionofCNPDC本文件之产权属于中广核工程设计SED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandsupplyfailureanalysisRevREVISION版日状编Drafted校Checked审Reviewed批Approved修改—说明Modification-AJiangFirstSED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandsupplyfailureanalysisRevREVISION版日状编Drafted校Checked审Reviewed批Approved修改—说明Modification-AJiangFirstSED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandsupplyfailureanalysisASED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandsupplyfailureanalysisAPLANTPHASEI(2×1000MW)SED-SystemDesignManual6.6,6.7-OperatingprincipleandsupplyfailureanalysisJUN,SED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandsupplyfailureanalysisRevSED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandsupplyfailureanalysisRev文件修改记录版日章页修改范围及依据AFirstSED-SystemDesignManualChapterSED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandsupplyfailureanalysisRev6.6OPERATING SED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandRevSED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandRevfailure 6.6OPERATINGOperationoftheSEDsystemispermanentandisnormallyinAUTOONmode.Normally,inthecaseofoneSEDdemineralizedwatertankusedonly,permutationcanbeperformedbytheoperator.Twotankscanbeusedatthesametime. StartupMake-Make-upforthetankscanbe-Manuallybyopeningthecorrespondingmake-up-Automaticallybypositioningthecontrollerofthecorrespondingmake-upwatervalveinAUTOONposition.Inthatcase,themake-uprequest(accordingtotanklevel)forthein-servicetankthentriggersthecontrolcircuitoftherespectivemake-upwatervalve.Then,therespectivemake-upwatervalvewillopenandclosedependingonthewaterlevelintheThemake-uprequesttriggersoneormuchmoreSDAdemineralizationlinesdependingtheoperatingmodeandthelevelinthetankSEDManualvalveintheutilizationcircuitisopenandtheinstallationisstarted-Thecontrolswitchesofthethreepumpsareputinmanual-Onepumpischosenasmasterpumpbymeansof-MasterpumpisstartedmanuallyorautomaticallywhenthecontrolswitchofthemasterpumpisputinAUTOONposition.-Theothertwopumps(backsupandstandbypumps)areputinAUTOONpositions,thestandbypumpcanbeputinmanualposition.-Thechoiceofthemasterpumpviatheselectorswitchwillautomaticallyselectabackuppumpandastandbypump.Andthebackuppumpwillthenstartupautomaticallyif:·Themasterpumpbecomesoutofoperationbecauseof·TheflowishighincaseofSEDwaterrequestincreasingfrom Make-Make-upcanbe-Manuallybyclosingthemake-upvalveinthetankSED-SystemDesignManualChapter6.6,6.7-OperatingprincipleSED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandRevfailure -Automaticallybyhighlevel1or2inthetankused.Make-upcanbeinterruptedbyshutdownofthein-serviceSDAdemineralizationlines. SEDPumpsoperationcanbe-Manuallybyshutdownofthein-service-Automatically·Low2pressureatthepumpdischarge(delay·Lowlevel3inthein-service·Closureofbothvalves305VDand·Chosenasastandby·Chosenasabackuppump,andlow1flowatthepump·Trippedbecauseof·High2flowatthepumpProceduretobefollowedintheeventofanAlloperatingfaultsaresignaledbyanalarmontheoperatoralarmdisplaydemineralizedwaterproductioncontrolsysteminthecontrolroomofYAbuildingandonCRTinmaincontrolroom.IfanalarmoccurredonCRTinmaincontrolroom,theoperatorcandiscoverthesourceofthealarmbyconsultingtheKICsystem.ButhemustthenactontheoperatorstationofdemineralizedwaterproductioncontrolsystemandbringtheinstallationbackintooperationafterthefaultorfaultshavebeenSED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandSED-SystemDesignManualChapter6.6,6.7-OperatingprincipleandRevfailure 6.7POWERSUPPLYFAILURELossof380VACswitchboardIncaseoflossof380VACpowersupply,themotor-operatedmakeupvalveonthecorrespondingswitchboardremainsinpositionbutcan’tbemaneuvered:andtheoperatoriswarnedbytheactuatorfaultalarm.-Attheendofmake-up,thevalveinthetankbeingusedremainsopenbutthedemineralizationlineorlinesin-serviceshutdownifthereisnorequestforSEDmake-up.IfanyrequestofSEDthetankbeingusedisfilleduptotheleveloftheoverflowpipeandtheoperatoriswarnedbyactuatorfaultalarmandbythelevelH2alarm.Whenthemasterpumpislossofpowersupply,theback-uppump,whennotfedbythesameswitchboard,willstart-upautomatically.Whenthepowersupplyisrestored,themasterpumpwillrestartautomat