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Phillips 66 (2418), Belle Chasse
Causal Factor: Instrument Failure
| LDEQ Accident Number Accident Date |
Point Source(s) | Notes | Amount of Release |
| 80306 2005-07-05 | FCC Unit #1291 | Cause: The FCC Unit #1291 system tripped off-line due to a false airflow alarm. Followup: No information given Notes: They claimed they restarted it and it is now safe and secure. | Carbon Monoxide: 952.0 pounds Hydrogen Sulfide: 2.0 pounds Nitrogen Dioxide: 3.2 pounds Sulfur Dioxide: 314.0 pounds |
| 80112 2005-06-26 | Saturate Gas Unit (7991-PSV-18) | Cause: Pressure control valve BPC-244 malfunctioned gave a false signal of being open when actually in the closed position. This caused the pressure relief valve 7991-PSV-18 to lift for 5 minutes. Followup: Yes Notes: Assured they would operate this at a Òlow pressureÓ pending findings of the investigation. | Butane: 91.0 pounds Hydrogen Sulfide: 90.0 pounds Propane: 8,881.0 pounds |
| 79636 2005-06-07 | X-4 and X-5 exchangers in the coke fractioner | Cause: The compressor second state knockout drum received a high level alarm. Inadequate cooling of verhead vapors at the X-4 and X-5 exchangers in the coke fractioner caused the 891-K-1 compressor to trip offline Followup: No information given Notes: They claimed they changed operational procedures and the compressor was restarted. | Nitrogen Oxide: 8.7 pounds Sulfur Dioxide: 317.0 pounds |
| 78696 2005-05-02 | Low Pressure Flare | Cause: The inlet temperature signal increased unexpectedly at the suction drum and the recycle flow rate increased causing the compressor to trip off line due to a high amperage reading fromt eh compressor's motor. Followup: No Notes: Operational changes were made immediately to correct the temperature signal at the suction drum and the compressor was restarted. | Nitrogen Dioxide: 8.6 pounds Sulfur Dioxide: 188.5 pounds |
| 77930 2005-03-31 | 100-PSV-5B on 100-T-205 | Cause: The pressure transmitter malfunctioned and showed no further increase as the level of the sphere increased. Followup: No information given Notes: None | Hydrocarbon: 320.0 pounds Nitrogen: 517.0 pounds |
| 77241 2005-02-28 | Saturated Gas plant 7991 -V-1 | Cause: The signal to the 7991-V-1 straight run Debutinizer Bottoms level controller stopped transmitting it's signal from the field of the distributed control system Followup: No information given Notes: After inspection a set of wires appeared to be frayed. They sent a group of employees to fix the frayed wires. | Benzene: 344.8 pounds Hydrogen Sulfide: 565.8 pounds Volatile Organic Compounds: 16,789.1 pounds |
| 87954 2006-05-18 | 308F-D-1 Low Pressure Flare | Cause: The 891-K-1 compressor tripped off line due to a faultry level indicator on the high level alaerm in the compressor interstage drum. There was foreign material collecting and plugging the level bridle on V-16. Followup: No Notes: The liquid levels in the interstage drum were drained manually and the circuit breaker for the compressor was reset and the compressor put back on line. A periodic flush of the V16 level bridle with fresh water is the corrective action. | Hydrocarbon: 152.7 pounds Hydrogen Sulfide: 10.9 pounds Nitrogen Oxide: 15.9 pounds Sulfur Dioxide: 1,081.6 pounds |
| 87288 2006-04-19 | 293-PSV-4A | Cause: The 293-KN-1 compressor tripped due to a false high level alarm from the suction drum 293-V-5. The suction drum had had been drained by the unit operator but the local level alarm continued to show a high level signal to the compressor. Thie high level alarm indicator caused the compressor to trip unexpectedly. The compressor's turbine could not be reset immediately resulting in 293-PSV-4A lifting to the atmosphere for a short duration. Followup: yes Notes: None | Butane: 340.0 pounds Hydrocarbon: 9,123.3 pounds Hydrogen Sulfide: 449.0 pounds Propane: 904.0 pounds |
| 86729 2006-03-25 | Spent Catalyst Slide Valve 1291-LV92 | Cause: The local valve position indicator showed the valve to be closed. Followup: No Notes: 1291LV92 was manually hand jacked to preperly seat the valve and lock it in place. | Methane/Ethane Mixture: 952.0 pounds |
| 110124 2008-10-16 | 4000 hp compressor --FLARE | Cause: Trip of 4000 hp compressor caused by a low oil alarm trip caused by an air bubble in the lube oil system. Followup: Yes Notes: New operrating procedure developed and implemented to prevent the problem from reoccuring. Verbal report | |
| 115614 2009-06-12 | 308F-D-1 (Low Pressure Flare); 308F-D-2 (High Pressure Flare) | Cause: Approximately three hours following the installation of the level transmitter, operating conditions within the saturated gas unit began to show periodic spikes of liquid carryover into the inlet of the compressor (7991-K-1) by having periodic compressor speed slowdowns. The liquid carryover seems to have been attributed to the level transmitter malfunctioning both in response time and level indication. The next day, the Saturated Gas Unit Compressor unexpectedly shut down due to a high level alarm in the compressor's suction drums (7991-V-7 and V-8) which get their feed from the Absorber/Stripper column (V-2). Several process unites then flared due to inlet gases being routed to the FCC Compressor and subsequent upset conditions from suddenly swinging into a different compressor system. This eventually caused the FCC compressor to shut down. When the FCC Compressor shuts down in an emergency, it causes the entire Low Sulfur Gasoline Units (among other operations) to shutdown as well.
*Could also be classified as start up/shut down. Followup: No Notes: Immediately tried to restart the Saturated Gas Unit's compressor as well as route the inlet gases to the FCC Compressor which began to also have de-stabilizing operating conditions. "No offsite impact noted throughout the event." | Sulfur Dioxide: 1,446.0 pounds |
| 131764 2011-06-08 | FLARE-Low Pressure Flare (308-D-1); Crude Unit Towers (191-V-6; 191-V-3) | Cause: The Crude Unit's Vacuum Tower (191-V-6) malfunctioned and the Saturated Gas Unit compressor's first stage suction drum's (7991-V-7) level instrument also malfunctioned. Gas was routed to the Low Pressure Flare (308-D-1). Followup: No Notes: BRQ. Liquid levels at both the Crude Vacuum Tower and Saturated Gas Compressor suction drum were stabilized and flaring was secured. The incident date from the incident report does not match the SPOC and LDEQ reports. There is an e-mail string between ConocoPhillips and LA gov. regarding this discrepancy. There is a note that material did go offsite in the report. | Sulfur Dioxide: 466.0 pounds |
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