现代化大型石化企业安全仪表系统设计应用

„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„Independent„ProtectionLayers1.Process2.DCS-3.AlarmOperators-4.SIS5.ReliefDevices6.Physicalprotection(F&G7.EmergencyResponseSIS/HAZOPSIL„„„„„„„„„„„„„„„„„„„„„„„„„„„CC1C21C3C4F1F2P1P2W1W2W3„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„SISSwitchingHubEWSSOEODCCCRFARSIS01DCSAMSNetAMSServerRedundantModBusCommHardwareconnectionbysplitekRedundantEthernetNetGPStimesyncElcocaldeRedundantPeertopeerSISconsoleSIS02CCRSISRemoteI/OSwitchingHubEWSSOEODCCCRFARSIS01DCSAMSNetAMSServerRedundantModBusCommHardwareconnectionbysplitekRedundantEthernetNetElcocaldeSISconsoleSIS02CCRSISRemoteI/OTripleF.O