ES 31301: VERY HIGH TEMPERATURE IN C3102A/B AND C3103A/B (ESD)CAUSES OF ACTION:1) TISAHH 31301 (Very high temperature in C3102A)2) TISAHH 31302 (Very high temperature in C3102A)3) TISAHH 31303 (Very high temperature in C3102A)4) TISAHH 31304 (Very high temperature in C3102A)5) TISAHH 31305 (Very high temperature in C3102A)6) TISAHH 31306 (Very high temperature in C3102B)7) TISAHH 31307 (Very high temperature in C3102B)8) TISAHH 31308 (Very high temperature in C3102B)9) TISAHH 31309 (Very high temperature in C3102B)10) TISAHH 31310 (Very high temperature in C3102B)11) TISAHH 31314 (Very high temperature in C3103A)12) TISAHH 31315 (Very high temperature in C3103A)13) TISAHH 31316 (Very high temperature in C3103A)14) TISAHH 31317 (Very high temperature in C3103B)15) TISAHH 31318 (Very high temperature in C3103B)16) TISAHH 31319 (Very high temperature in C3103B)17) TISAHH 31312 (Very high temperature regeneration circuit)18) IS 31302 ActiveACTIONS: 1) CLOSES FV 31303 (Air to regeneration system)2) CLOSES XV 31305 (Air to regeneration system)3) STOPS E3107 (Gas heater)4) Board signalling of ES activeIS 31302: HIGH HYDROCARBON CONCENTRATION IN VENT TO ATMOSPHERE (DCS)CAUSE OF ACTION:1) ARSAHH 31304 (Very high concentration of HC to atmosphere) and ZSL 31301 CLOSE not Active2) ARSAHH 31303 (Very high concentration of CO and CO2 to and ZSL 31301 CLOSE not Active atmosphere)ACTIONS: 1) ACTUATES ES 313012) CLOSES FV 31301 (Regeneration nitrogen)3) CLOSES HV 31301 (Discharge to atmosphere)4) Board signalling of IS activeIS 31303: REGENERATION SYSTEM TO ATMOSPHERE (DCS)IS 31303 doesn’t allow HS 31302 to OPEN HV 31302 if ZSL 31301 Close is not Active.IS 31303 doesn’t allow HS 31301 to OPEN HV 31301 if ZSL 31302 Close is not Active.IS 31303 CLOSES FV 31303 AND XV 31305 if ZSL 31301 Open is not Active OR ZSL 31302 Close is not Active.IS 31304: HIGH TEMPERATURE IN D3104 (DCS)CAUSE OF ACTION:1) TISAH 31311 (High temperature in E3108 outlet)2) TISAH 31322 (High temperature in D3104)ACTIONS: 1) CLOSES FV 31302 (Regeneration steam)2) Board signalling of IS activeES 31305: STOP OF REGENERATION HEATER (ESD)CAUSES OF ACTION:1) FYSALL 31304 (Low flow to regeneration heater)2) TSAHH 31320 (E3107 very high temperature)3) TISAHH 31321 (E3107 outlet very high temperature)4) TISAHH 31322 (Very high temperature in D3104)5) TISAHH 31311 (Very high temperature in E3108 outlet)ACTIONS: 1) STOPS E3107 (Regeneration gas heater) 2) Board signalling of ES activeIS 31306: VERY LOW LEVEL IN D3104 (DCS)CAUSES OF ACTION:1) LISALL 31303 (Very low level in D3104)2) ZSL 31306 Open not Active (D3104 discharge valve HV 31306 is closed)ACTIONS: 1) STOPS P3104 (Waste Hexane pump)2) Board signalling of IS activeES 31307: VERY HIGH OXYGEN CONCENTRATION IN OFF GAS (ESD)CAUSES OF ACTION:1) ARSAHH 31305 (Very high Oxygen concentration in off-gas)ACTIONS: 1) CLOSES FV 31303 (Regeneration air)2) CLOSES XV 31305 (Regeneration air)3) Board signalling of ES activeIS 31308: PROTECTION OF C3103A/B (DCS)CAUSES OF ACTION:1) ZSL 31308 CLOSE NOT ACTIVE (Valve HV 31308 on regeneration line to C3103A/B is open)ACTIONS: 1) CLOSES FV 31302 (Regeneration steam feed)2) Board signalling of IS activeES 32101: K3201 SHUT DOWN (ESD)(To be confirmed and checked by compressor vendor)CAUSES OF ACTION1) PISAHH 12308 (Very high pressure in feed of E1208)2) PISAHH 12309 (Very high pressure in feed of E1208)3) PSALL 32106 (Very low pressure at compressor suction)4) PSAHH 32108 (Very high pressure at 1st stage discharge)5) TSAHH 32103 (Very high temperature at 1st stage 6) LSAHH 32103 (Very high level in D3203)7) LSAHH 32105 (Very high level in D3201)8) TSAHH 32106 (Very high temperature at 2nd stage discharge)9) PSAHH 32110 (Very high pressure at 2nd stage discharge)10) ZSL 32102 Close not Active (PK3201 fast depressurization open)11) ZSL 32104 Close not Active (C3201 fast depressurization open)12) Other causes by Compressor Vendor. ACTIONS: 1) STOPS K3201 (Recycle gas compressor)2) Board signalling of ES activeIS 32102: VERY HIGH LEVEL IN C3201 BOTTON (DCS)CAUSES OF ACTION1) LSAHH 32102 (Very high level in C3201)2) LRCSAHH 32101 (Very high level in C3201)ACTIONS: 1) CLOSES FV 32101 (Fresh Hexane to C3201) 2) Board signalling of IS active