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Chalmette Refining (1376), Chalmette
LDEQ Accident Report
| Accident # | 76362 |
| State Police # | 05-00463 & 05-00486 |
| Accident Date | 2005-01-21 |
| Report Date | 2005-01-28 |
| Follow-up Date | 0000-00-00 |
| Follow-up: | No |
Pollutants Released
| Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
| Carbon Monoxide | 5h 48m | Hydrocracker Light Ends Plant Butane Splitter Tower & LEP Depropanizer Tower Bottoms Flow Control Valve 50FC060 | NO | YES | NO | 314.7 pounds |
| Sulfur Dioxide | 5h 48m | Hydrocracker Light Ends Plant Butane Splitter Tower & LEP Depropanizer Tower Bottoms Flow Control Valve 50FC060 | NO | YES | NO | 46.3 pounds |
| Hydrocarbon | 5h 48m | Hydrocracker Light Ends Plant Butane Splitter Tower & LEP Depropanizer Tower Bottoms Flow Control Valve 50FC060 | NO | NO | YES | 199.4 pounds |
| Hydrogen Sulfide | 5h 48m | Hydrocracker Light Ends Plant Butane Splitter Tower & LEP Depropanizer Tower Bottoms Flow Control Valve 50FC060 | NO | NO | NO | 0.1 pounds |
| Nitric Oxide | 5h 48m | Hydrocracker Light Ends Plant Butane Splitter Tower & LEP Depropanizer Tower Bottoms Flow Control Valve 50FC060 | NO | YES | NO | 77.0 pounds |
| Nitrogen Dioxide | 5h 48m | Hydrocracker Light Ends Plant Butane Splitter Tower & LEP Depropanizer Tower Bottoms Flow Control Valve 50FC060 | NO | YES | YES | 5.8 pounds |
Accident Classified As: Reportable Quantity
Cause of Problem: Instrument Failure
(1) 0600 hrs: Hydrocracker Light Ends Plant (LEP) Butane Splitter Tower began to overpressure because LEP Depropanizer Tower Bottoms Flow Control Valve (50FC060) had failed in the open position, letting propane to exit to the Butane Splitter. (2) 1700 hrs: Butane Splitter again began to overpressure due to the presence of propane. The level indication on the level instrument was detecting a false reading.
Discharge Preventable - No
Notes/Remedial Actions
Letter speaks of two incidents on same day at 0600 hrs and 1700 hrs but attached report shows three incidents: (1) 4:05 a.m. lasting 3h 42m; (2) 3:15 p.m. lasting 41m; (3) 4:30 p.m. lasting 1h 25m. Amounts of compounds are only given in totals for all 3incidents. This incident is related to incident # 76355. LDEQ states that it is also related to incident # 76395.
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