III. Actividades de la Delegación Federal en el Estado de Morelos de la Secretaría de Economía
III.4 PRODEINN - Objetivo sectorial 4: Promover una mayor competencia en los mercados y
Loss of DC power to aux lube oil pumps.
Oil leakages.
Motors fault Pumps fault.
Sensor fault.
Determine cause of DC power loss.
Refer to the specific alarms about electrical faults signaled.
Check the motors (88QE).
Check the oil pumps.
Check the status of the transmitter (63QE).
L72QEZ_ALM EMERGENCY LUBE PUMP MOTOR
RUNNING
The main pump driven accessory gear and AC powered lube oil pump have not supplied sufficient lube oil pressure because of pump failure or leaks.
Check for leaks and pump malfunction.
Check proper operation of pressure switches 63 QL, 63 QT_2A and 63 QT_2B.
L74BATH_ALM BATTERIES COMPARTMENT
TEMPERATURE HIGH The batteries compartment temperature is high. Check heating and ventilation system.
L74BATL_ALM BATTERIES COMPARTMENT
TEMPERATURE LOW The batteries compartment temperature is low. Check heating and ventilation system.
L74HL_ALM CONTROL COMPARTMENT TEMP
LOW The control compartment temperature is high. Check heating and ventilation system.
L74HT_ALM CONTROL COMPARTMENT
TEMPERATURE HIGH The control compartment temperature is high. Check heating and ventilation system.
L83CBLIMIT COMP BLD VLV FAIL TO CLOSE -LIMITED
Compressor bleed valves have not operated properly. They are in the wrong position or required an excessive amount of time to move from one position to the other.
Investigate problem. The problem should be corrected before restarting. The Master reset switch must be pressed before restarting.
Check proper operation of the solenoid valve 20 CB.
Check the control air supply of VA 2_1, 2_2, 2_3, 2_4 valves and the opening of the isolating valve.
Check the cleanliness of the air separator.
Check the limit switches 33 CB.
L83HOST_ALM OVERSPEED TEST MODE SELECTED
_ HP Over-speed trip being checked. See ‘’Over-speed trip checks’’ module 10 of this chapter.
L83RBO_ALM REMOTE BREAKER OPENING
DETECTED Remote breaker opening detected For information
L83WW_ALM WASHING ON-LINE PROHIB.INLET
TEMP.LOW
The on-line water wash is inhibited because the temperature is low.
The on-line water wash will be possible as soon as the temperature will be in the limit spread.
L83WWON_ALM 24H DELAY NECESSARY SINCE THE
LAST WW 24 hours necessary since the last water wash. Wait the period of 24H to start again on-line washing.
L86ARS_ALM AC TRANSFER FAULT A512-40G1 loss of excitation (A) Check exciter cubicle
L86BTTEST_AL HEAT VENT TURB COMP TEST
ABORTED BT test stopped because of ventilation pressure fault Check BT or leaks in compartment
L86BTX_ALM LOSS OF TURBINE COMPARTMENT
COOLING FAN The turbine compartment ventilation is faulty.
Check the ventilation system of this compartment (power supply, motors, fans, electrical circuit...).
Check the position of vent flap.
Check the proper operation of the limit switch 33BT
L86CBA_ALM COMPRESSOR BLEED VALVE
POSITION TROUBLE
Compressor bleed valves have not operated properly. They are in the wrong position or required an excessive amount of time to move from one position to the other.
Investigate problem. The problem should be corrected before restarting. The Master reset switch must be pressed before restarting.
Check proper operation of the solenoid valve 20 CB.
Check the control air supply of VA 2_1, 2_2, 2_3, 2_4 valves and the opening of the isolating valve.
Check the cleanliness of the air separator.
Check the limit switches 33 CB.
L86CBT_ALM COMPRESSOR BLEED VALVE
POSITION TROUBLE TRIP See alarm : L86CBA_ALM See alarm : L86CBA_ALM
L86CPR_FLT COMP OPERATING LIMIT CONTROL
FAULT
Inlet heating control valve fault.
Compressor discharge pressure transmitters fault.
Check operation of bleed heat control valve.
Check the compressor discharge pressure transmitters.
L86CRTX_ALM STARTING MOTOR PROTECTIVE
LOCKOUT The cranking motor protective system has been initiated.
Determine the cause of this fault before attempting a new start.
NOTE:
The master reset function must be selected before restarting.
L86FA_ALM FUEL ADDITIVE CIRCUIT FAULT Low level of inhibitor tank.
Heavy fuel inhibitor pump faulty.
Check the proper operation of heavy fuel inhibitor pump.
Check the tank level.
L86FAX_ALM CRUDE OIL FWD Crude oil FWD additive pumps fault alarm Check the proper operation of heavy fuel inhibitor the pump.
L86FPG2HT_A POST-IGNITION P2 HIGH TRIP SRV valve to much opened Check SRV valve
Check regulation constant are the same e as in the A010 L86FPG2IH_AL PRE-IGNITION P2 PRESS HIGH IGN
INHIBIT GCV valve not enough opened Check GCV valve
Check regulation constant are the same e as in the A010
L86FPG2LT_A POST-IGNITION P2 LOW TRIP SRV valve not enough opened Check SRV valve
Check regulation constant are the same e as in the A010
L86FS_ALM LIQ FUEL FALSE START-USE RESET
DISPLAY Liquid fuel false start-use reset display After sequencing reset by 86FSRST_CPB
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L86FT_ALM HEAVY FUEL TEM. FAULT XFERT
LOCKOUT
The temperature of the heavy fuel is not correct. The
transfer is locked. Check heavy fuel heating system
L86FUX_ALM COMPLETE LOSS OF HEAVY FUEL FWD PUMPs
Complete loss of heavy fuel FWD pumps crude oil FWD
additive pumps. Check pumps.
L86G1AMON_AL 74/86G-1A LOCK OUT RELAY COIL
FAULT 74/86G-1A lock out relay coil fault Check 74/86G-1A
L86G1BMON_AL 74/86G-1B LOCK OUT RELAY COIL FAULT
Lockout relay 74/86G-1B is faulty.
Wiring circuit in GCP sequence
Tripping coil of the 52G circuit breaker is faulty.
Check relay L86G2AALM_AL 74/86G-2A LOCK OUT RELAY TRIP 74/86G-2A lock out relay trip Check 74/86G-2A L86G2AMON_AL 74/86G-2A LOCK OUT RELAY COIL
FAULT 74/86G-2A lock out relay coil fault Check 74/86G-2A
L86G2BALM_AL 74/86G-2B LOCK OUT RELAY TRIP The lockout 74/86G-2B relay tripped in the GCP and sent
opening order 41E and 52G breakers Check 74/86G-2B L86G2BMON_AL 74/86G-2B LOCK OUT RELAY COIL
FAULT
Lockout relay 74/86G-2B is faulty.
Wiring circuit in GCP sequence
Tripping coil of the 52G circuit breaker is faulty.
Check relay
L86GCVT_ALM GAS CONTROL VLV NOT
FOLLOWING - TRIP
Start inhibited + transfer to fuel if running on gas or transfer to gas inhibited.
The gas control valve feedback is abnormal.
Supply fault.
Sensors defected.
Valve and servo-valve fault.
Check LVDT, 96 GC_1, 2 (setting value, wiring).
Check the calibration of the VGC.
Check the proper operation of the servo-valve 65 GC_1.
L86GLTA_ALM
GAS LEAK TEST OF SRV FAILED Gas leak of SRV valve Check SRV valve
L86GLTB_ALM GAS LEAK TEST OF GCV/VENT
FAILED Gas leak of GCV valve or Gas Purge Inter valve Check GCV valve or Gas Purge Inter valve L86GSC10T12A 2/3 GEN STATOR WIND. CENT. TEMP
SNSR FLT #10-11-12
Temperature sensor fault 2 of 3 Generator RTDs failure
Decrease the generator load
Check RTD and associated connections L86GSC1T3_AL 2/3 GEN STATOR WINDING CENTER
TEMP SNSR FLT #1-2-3
Temperature sensor fault 2 of 3 Generator RTDs failure
Decrease the generator load
Check RTD and associated connections L86GSC4T6_AL 2/3 GEN STATOR WINDING CENTER
TEMP SNSR FLT #4-5-6
Temperature sensor fault 2 of 3 Generator RTDs failure
Decrease the generator load
Check RTD and associated connections L86GSC7T9_AL 2/3 GEN STATOR WINDING CENTER
TEMP SNSR FLT #7-8-9
Temperature sensor fault 2 of 3 Generator RTDs failure
Decrease the generator load
Check RTD and associated connections
L86GVA_ALM INLET GUIDE VANE CONTROL TROUBLE
The I.G.V. position is not correct.
Adjustment of the hydraulic jack.
Problem of the setting values.
Check the I.G.V. control system.
Check the proper operation and the setting values of the LVDT 96 TV.
Check the adjustment of the hydraulic jack.
L86HEATR_ALM COMPARTMENT HEATER
OPERATING - PRE IGNITION TRIP Discrepancy between start order and feedback Check feedback match with heater status
L86JSX_ALM LOSS OF W. I. COMPARTMENT
VENTILATION Loss of W.I. Compartment ventilation. Check fan
Check electrical circuit
L86N_ALM ELECTRICAL TROUBLE NORMAL
SHUTDOWN
Electrical trouble on the generator with normal shutdown for the unit.
Determine the electrical trouble with the matrix in the protection panel.
NOTE:
The unit should not be operated until the cause of the problem has been determined and corrected.
Refer to specific chapters for more information about generator.
L86N1MON_ALM 74/86N-1 LOCK-OUT RELAY COIL
FAULT 74-86N-1 lock-out relay coil fault Check 74-86N-1 lock-out relay coil
L86N2MON_ALM 74/86N-2 LOCK-OUT RELAY COIL
FAULT 74-86N-2 lock-out relay coil fault Check 74-86N-2 lock-out relay coil
L86NX_ALM STARTUP CHECK STOP GEN
PROTECTION FAILURE SHUTDOWN The general protection of the generator is defect Check generator system L86PUR_ALM HEAVY FUEL TG - TRIP GT trip while running with heavy liquid fuel For information
L86PURC_ALM HEAVY FUEL PURGE VALVE FAILURE
TO OPEN The heavy fuel purge valve failed to open. Check the proper operation of the purge valve.
L86PURT_ALM HEAVY FUEL PURGE VALVE FAILURE
TO CLOSE The heavy fuel purge valve failed to close. Check the proper operation of the purge valve.
L86PURZ_ALM HEAVY FUEL PURGE TG TRIP SINCE 1 HOUR
GT tripped since 1 hour and operator heavy purge confirmation not given
Finish heavy fuel purge sequence Confirm purge
Restart gas turbine heavy fuel when purge finished
L86QE_ALM DC PUMP ELECTRICAL TROUBLE
START INHIBITED DC pump electrical trouble start inhibited Check DC pump Check electrical circuit
L86S AUTO SYNCHRONIZING LOCKOUT Auto synchronizing self-checking system has detected a synchronizing equipment abnormality.
Investigate synchronization system to determine exact cause of problem.
Refer to the Manufacturer’s documents about the synchronizing system.
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L86T1AALM_AL 74/86T-1A LOCK OUT RELAY TRIP 74/86T-1A Lock out relay coil fault Check relay Check GCP L86T1AMON_AL 74/86T-1A LOCK OUT RELAY COIL
FAULT 74/86T-1A Lock out relay coil fault Check relay
Check GCP
L86TCI COMPRESSOR INLET
THERMOCOUPLES DISAGREE Bad thermocouple signal. Check thermocouples and wiring.
L86TFB_ALM EXHAUST THERMOCOUPLES OPEN
TRIP
Trip.
Excessive number thermocouples fault.
Position, connection, short-circuit, cut-off fault.
Check and reconnect thermocouples.
Check the connection and the position.
Check for short-circuit and cut-off.
L86TFD_C FALSE START DRAIN VALVE FAIL TO
CLOSE Valve stucked or limit switch failure Check limit switch wiring and good operation. Look for valve bloquage.
L86TFD_NOFLOW FALSE START DRAIN SYSTEM
BLOCKED Drain system clogged. Look for any foreign object or residual fuel in drain piping.
Check valve operation.
L86TFD_O FALSE START DRAIN VALVE
FAILURE TO OPEN Valve stucked or limit switch failure Check limit switch wiring and good operation. Look for valve bloquage.
L86TFDLOW_AL FSD VALVE CLOSED AT LOWER
PRESS THAN EXPECTED Valve spring damaged Check valve spring.
L86TGT1_ALM GENERATOR DIFFERENTIAL TRIP CHANNEL 1
Electrical trouble with emergency shutdown. Relay 86G indicate a generator differential.
The unit should not be operated until the cause of the problem has been determined and corrected.
L86TGT2_ALM GENERATOR DIFFERENTIAL TRIP CHANNEL 2
Electrical trouble with emergency shutdown. Relay 86G indicate a generator differential.
The unit should not be operated until the cause of the problem has been determined and corrected.
L86TVA_ALM POSITION IGV FAULT On start-up, the inlet guide vanes are not closed.
Investigate problem. The problem should be corrected before restarting. The Master Reset switch must be pressed before restarting.
NOTE:
Refer to Manufacturer’s documents and to Control specification for proper values.
L86TXT_ALM EXHAUST OVERTEMPERATURE TRIP
The temperature control system has not limited exhaust temperature within the trip limits.
Temperature control system fault.
Fuel control system fault.
Ventilation system fault.
Check the temperature control loop and the fuel control system.
Check the cooling and ventilation system.
L86VGX_ALM LOSS OF LOAD GEAR COMPT COOLING FAN
Air fan fault Motor fault Power supply fault
Check the load compartment cooling ventilation system Check the supply of motors 88VG
Check fuses, breakers and protections
Check the mechanical status of the fans and the motors
L86VL1_ALM LOSS OF MCC VOLTAGE - LOSS OF
VENTILATION SD The heat compartment ventilation is faulty.
Check the ventilation system of this compartment (power supply, motors, fans, electrical circuit...).
Check the position of vent flap.
Check the proper operation of the limit switch 33VL L86VLTEST_AL HEAT VENT DLN COMP TEST
ABORTED VL test stopped because of ventilation pressure fault Check VL or leaks in compartment
L86VLX_ALM LOSS OF DLN COMPARTMENT
VENTILATION Fans fault Check fans
L86WN1_ALM WATER INJ. SUCTION PRESSURE
HIGH LOCKOUT
The water injection mode is automatically deselected.
The water pressure at the inlet of the water injection skid is too high.
Leakage.
Dirt strainers.
Test valves open.
Isolating valves at the inlet pump closed.
Check for leakage.
Check the closing of the test valves.
Check the status of the strainer.
Check the opening of the isolating valve at the inlet pump.
Check the pressure switch 63 WN_1 (operation and setting point).
Check the opening of isolating valve of water inlet.
L86WN2_ALM WATER INJ. DISCHARGE PRESS.
LOW LOCKOUT
The water injection mode is automatically deselected.
The water pressure at the outlet of the water injection skid is too low.
Check for leakage.
Check the pressure.
Check the proper operation of the pressure switch 63 WN_2.
Check the proper operation of the water pump.
Check the water injection system.
L86WN3_ALM WATER INJ. FLOW HIGH LOCKOUT The water injection mode is automatically deselected.
The injected water flow is higher than the authorized limit.
Check the solenoid valve 20 WN.
Check the flow pickup 77 WN.
Check the water injection system.
L86WN7_ALM WATER INJECTION LOW FLOW TRIP
WATER
Water injection trip.
Water flow low.
Limit switch fault.
Check the flow pickup 77 WN.
Check the limit switch 33 WN_0.
Check the water injection system.
L86WW_ALM OFF LINE COMP WW - USE RESET
DISPLAY Off line comp WW - use reset display After sequencing reset by L86WWRST_CPB
L86WWTD LOSS OF FALSE START DRAIN
TEMPERATURE SENSORS NS TC failure or input card failure Check input card and check TC integrity
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L90TKL_ALM EXHAUST FRAME COOLING SYS
TRBL - UNLOAD Exhaust frame cooling sys trouble - unload Check cooling system
L94BLN_ALM STARTUP CHECK STOP BATTERY
CHARGER TROUBLE - SD
The 2 batteries charger AC under voltage.
The 2 batteries chargers are faulty.
Check the 2 batteries charger AC breaker.
Check voltage magnitude.
Check the proper operation of the batteries charger.
L94BTL_ALM
HEAT VENT TURBINE
COMPARTMENT SB FAN TEST FAILED
The turbine ventilation is faulty.
Motor 88BT_1 and 2 fault
Check the ventilation system of this compartment.
Check fuses, breakers, protections, and supplies.
Check the mechanical status of the fan and the motor in trouble.
Check the proper operation of each cooling air fan motor 88BT
Check the position of vent flap.
L94DP1_ALM G60A CRITICAL FAILURE –TRIP G60A critical failure trip Check G60A
L94DP2_ALM G60B CRITICAL FAILURE – TRIP G60B critical failure trip Check G60B
L94DP3_ALM T60A CRITICAL FAILURE – TRIP T60A critical failure trip Check T60A
L94F1B_ALM FIRE PROTEC AUX/TURB/LOAD
COMPT CO2 RELEASE CO2 emission See alarm : L33CL1_ALM
L94F2B_ALM FIRE PROTEC BEARING AREA CO2
RELEASE CO2 emission See alarm : L33CL1_ALM
L94F4B_ALM CO2 RELEASED ZONE #4 ALARM CO2 emission See alarm : L33CL1_ALM
L94GLTSD_ALM SHUTDOWN GAS LEAK TEST FAILED Leakage in gas system during shutdown TG Check for leakage L94GLTSU_ALM STARTUP GAS LEAK TEST FAILED Leakage in gas system during startup TG Check for leakage
L94LTH_ALM STARTUP CHECK STOP LOAD
TUNNEL TEMP HIGH SD
Thermocouple faulty
Shutdown TG Check thermocouple ttib1
L94LTTH_ALM LUBE OIL HEADER TEMPERATURE SNSR FLT: SHUTDOWN
2 of the 3 thermocouple are faulty Temperature of lube oil is too high.
Shutdown TG
Check the lube oil skid (exhauster, heater, pump).
Check proper operation of thermocouple LTTH1/LTTH2/LTTH3.
L94LV_ALM XFER TO DIST WATER WASH
NEEDED
Transfer to distillate.
Water wash needed after 15 operating with crude oil.
Water wash has to be done, and then operation with crude oil is authorized.
L94PGT_ALM GAS FUEL NOZ. PURGE SYSTEM
TROUBLE TRIP
Inter-valve pressure between VA 13_1 and VA 13_2 is high during start-up: the unit trips.
Check the proper operation and position of the purge valve VA 13_2.
Check the status of the solenoid valves 20 PG_1 and 20 PG_2.
Check the pressure switch 63 PG_1 (operation and setting point).
L94TC_ALM TORQUE CONVERTOR DRAIN VALVE TROUBLE ALARM
The torque converter drain valve is not actuated in the same time as the solenoid valve (20 TU_1).
Check the proper operation of drain valve and solenoid valve.
Check the limit switch 33 TC_1.
L94TFD FALSE START DRAIN VALVE
TURBINE SHUTDOWN Refer to L86TFD_NOFLOW or L86WWTD Refer to L86TFD_NOFLOW or L86WWTD
L94VLL_ALM HEAT VENT DLN COMPARTMENT SB
FAN TEST FAILED
The turbine ventilation is faulty.
Motor 88VL_1 and 2 fault
Check the ventilation system of this compartment.
Check fuses, breakers, protections, and supplies.
Check the mechanical status of the fan and the motor in trouble.
Check the proper operation of each cooling air fan motor 88VL
Check the position of vent flap.
L94VTSG1_ALM VOLTAGE MEASURE DOWNSTREAM
52G TROUBLE
The mentioned breaker is open. Consequently the MKVI can not receive the voltage measurement (upstream 52G) for the synchronization.
Close the breaker
L94VTSG2_ALM FUSES OR MMCB FAULT FOR SYNC
VT'S DOWNSTREAM 52L1&2 Q0xL&T A issue detected on the fuse or MCB Inspection of the measurement cable.
Replace the fuse
L94X_S_ALM NORMAL STOP PAUSED FOR CBV
ACTUATION Normal stop paused for CBV actuation. Verify bleed valve circuit and switch position of bleed valve
L94XZ_ALM FIRED SHUTDOWN TOO LONG The fired shutdown is too long For information
L95BT_ALM HEAT VENT TURB COMPT AIR INLET
FLOW LOW
The turbine ventilation is faulty.
Motor 88BT_1 and 2 fault
Check the ventilation system of this compartment.
Check fuses, breakers, protections, and supplies.
Check the mechanical status of the fan and the motor in trouble.
Check the proper operation of each cooling air fan motor 88BT
Check the position of vent flap.
L95BTL_ALM HEAT VENT TURB COMPT AIR INLET
FLOW VERY LOW See alarm : L95BT_ALM See alarm : L95BT_ALM
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L95VL_ALM HEAT VENT DLN COMPT AIR INLET
LOW FLOW
The turbine ventilation is faulty.
Motor 88VL_1 and 2 fault
Check the ventilation system of this compartment.
Check fuses, breakers, protections, and supplies.
Check the mechanical status of the fan and the motor in trouble.
Check the proper operation of each cooling air fan motor 88VL
Check the position of vent flap.
L95VLL_ALM HEAT VENT DLN COMPT AIR INLET
LOW FLOW CONFIRMED See alarm : L95VL_ALM See alarm : L95VL_ALM
L96FG1_ALM HEAT VENT 96FG-1 SENSOR
TROUBLE Heat vent 96FG-1 sensor trouble Check heat vent 96FG-1 sensor
L96FGDIFF_AL GAS FUEL PRESS TRANSMITTERS DIFF FAILURE
Gas fuel pressure high.
Pressure switch fault.
Check the gas fuel system.
Check the pressure switch 63 FG.
L96FGH_ALM GAS FUEL PRESSURE HIGH Gas fuel pressure high.
Pressure switch fault.
Check the gas fuel system.
Check the pressure switch 63 FG.
L96FGL_ALM GAS FUEL SUPPLY PRESSURE LOW
Gas fuel pressure to turbine has been sensed as low.
Purchaser gas supply fault.
Leakage.
Wiring, supply fault.
Transmitter fault.
Check the cause of low supply pressure.
Check the purchaser gas supply.
Check for leakage.
Check the transmitters 96 FG_1.
Check the opening of the shutoff valve.
L96QV1_ALM LUBE OIL MIST ELIM HIGH
L96QV1_ALM LUBE OIL MIST ELIM HIGH