安全仪表系统SIS基础知识简介

SM(SafetyManager)—— Honeywell最新的达到SIL3等级的SIS系统SIS介绍什么是SIS？安全仪表系统SafetyInstrumentedSystemsSeptember12ExplosionatTexasGlueManufacturerInjuresSevenSeptember8FireatanExxonMobilPipelineinTexasKillsOneSeptember7FireatPhiladelphiaRefineryInjuresTwoSeptember6NaturalGasWellFireinSoutheasternHungarySeptember3U.S.FireworksPlantinMissouriKillsPlantOwnerAugust31FireatPhiladelphiaAreaSunocoPlantAugust31ChemicalReactioninZeonTechnologies55-GallonDrumforcesAreaEvacuationAugust24$2MillionFine,CriminalChargesforPremcorInc.August21PrudhoeBayOilProcessingCenterSpillFullyContainedAugust21FireandExplosionatYearOldHeartlandGrainFuelsEthanolAugust20AcidSpillatLasVegasResortInjures14,7SenttoHospitalAugust19NaturalGasPipelineNearCarlsbad,NMKills12August19FireBurnsDozensofBuildingsatU.S.ArmyAmmunitionPlant…4weeksofprocessindustryaccidentsSource:2000年8月~9月——欧洲HighLevelprocessparameterLowLevelNormalbehaviorTimeHighLevelLowLevelNormalbehaviorTimeHighAlarmLevelOperatorActionprocessparameterHighLevelLowLevelNormalbehaviorTimeTripLevelSIScontrolledEmergencyShutdownActionMechanicalShutdownActionHighAlarmLevelOperatorActionprocessparameterHighLevelLowLevelBoom!NormalbehaviorTimeTripLevelSIScontrolledEmergencyShutdownActionMechanicalShutdownActionHighAlarmLevelOperatorActionprocessparameterCOMMUNITYEMERGENCYRESPONSEPLANTEMERGENCYRESPONSEPHYSICALPROTECTION(DIKES)PHYSICALPROTECTION(RELIEFDEVICES)AUTOMATICACTIONSISORESDCRITICALALARMS,OPERATORSUPERVISION,ANDMANUALINTERVENTIONBASICCONTROLS,PROCESSALARMS,ANDOPERATORSUPERVISIONPROCESSDESIGNLAH1ILayersofProtectionModelShutdownsystemsusenormallyenergizedmodeofoperationInletpipeLiquidValve_01L1L2LogicSolverIOControllerLevel_01Level_02Valve_01L1L2LogicSolverIOCPULevel_01Level_02SafetyInstrumentedSystem10％30％60％帮助过程工业将风险降低到可以接受的水平的安全防护装置。SISPLCDCSSIS系统类型ElectromechanicalbasedtechnologyReplacementofhydraulicandpneumatic

operatingequipment

电子技术Electronic(solidstate)technologyReplacementofrelaybasedlogicsolvers继电器技术ProgrammableelectronictechnologyReplacementofsolidstatelogicsolvers可编程电子技术Technologiesappliedduringthelast40yearsEmergencyShut-downSystems(ESD)——紧急停车系统Fire&GasSystems(F&G)——火灾和可燃气体系统InstrumentedProtectiveSystems(IPS)——设备防护系统SafetyInterlocks——安全联锁系统SafetyRelatedSystems——安全相关系统BurnerManagementSystems(BMS)——燃烧管理系统HI(P)PS——高压防护系统TypesandnamesofSIS:19751980198419942004Relay-basedtechnologyRedundant“Standard”PLCs1987DevelopSISbasedonDiagnosticsFirstSafetyManagerorderedWildevuurPepperl&FuchsHoneywellFirstFSCorderedTÜVapprovedSafetyManagerInternationalElectrotechnicalCommission(IEC)—ThedesignanddevelopmentofSafetyManagerarecompliantwithIEC

61508／61511

(ascertifiedbyTUV).TUV(Germany)—CertifiedtofulfilltherequirementsofSIL3safetyequipmentasdefinedinthefollowingdocuments:IEC61508,IEC60664-3,EN50156,EN54-2,EN50178,IEC60068,IEC61131-2,IEC

61131-3,IEC60204.为什么用SIS（SM）系统作为安全防护装置？常规的PLC用做安全系统Honeywell的SM系统DigitalOutputofageneralpurposePLC+24Vdc0VdcCPULOAD,e.g.SOVLEADBREAKAGE=NuisancetripWhatcangowrong?“1”NormallyenergizedDigitalOutputofageneralpurposePLC+24Vdc0VdcCPULOAD,e.g.SOVSHORTCIRCUIT=DangerousState

Whatcangowrong?DigitalOutputofageneralpurposePLC+24Vdc0VdcCPULOAD,e.g.SOV“1”NormallyenergizedCPU0VdcLOAD,e.g.SOV+24VdcSTATUSDigitalOutputSafety

Manager

CPU0VdcLOAD,e.g.SOV+24VdcSTATUSDiagnostics!DigitalOutputSafetyManagerDiagnosticswithinSafetyManagerMemorycheckonprocessorandcommunicationmodules;Votingonprocessorlevel(1oo2D);IndependentWatchdog;SystemCycleTimecheck;Walkingbittestsondata-busses;Systemtemperaturecheck;Voltagemonitoring;Etc,etc,etc…………..CPU0VdcLOAD,e.g.SOV+24VdcSTATUSDefectShortcircuitDigitalOutputSafetyManagerCPU0VdcLOAD,e.g.SOV+24VdcSTATUSSTATUSDefectShortcircuitDigitalOutputSafetyManagerDigitalOutputSafetyManagerCPU0VdcLOAD,e.g.SOV+24VdcSTATUSSTATUS“0”de-energizedDefectShortcircuit+24VdcCPU0VdcLOAD,e.g.SOVSTATUSSTATUSDefectShortcircuitShortcircuitDigitalOutputSafetyManagerSecondarymeansofde-energizationviawatchdogCPU0VdcLOAD,e.g.SOV+24