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ExxonMobil Chemical Plant (286), Baton Rouge
LDEQ Accident Report
| Accident # | 113980 |
| State Police # | 09-01685 |
| Accident Date | 2009-04-06 |
| Report Date | 2010-03-25 |
| 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 |
| Flammable Gas | 2 m | RTO unit | NO | NO | YES | 1,000.0 pounds |
| Ethylene | 2 m | RTO unit | NO | NO | YES | 2,348.0 pounds |
| Propylene | 2 m | RTO unit | NO | NO | YES | 3,470.0 pounds |
| Volatile Organic Compounds (VOCs) | 2 m | RTO unit | NO | NO | YES | 100.0 pounds |
| 1,3-Butadiene | 2 m | RTO unit | NO | NO | YES | 10.0 pounds |
| Benzene | 2 m | RTO unit | NO | NO | YES | 10.0 pounds |
| Sulfur Dioxide | 2 m | RTO unit | NO | YES | NO | 500.0 pounds |
| Highly Reactive Volatile Organic Compounds (HRVOCs) | NO | NO | NO |
Accident Classified As: No Information Given
Cause of Problem: Instrument Failure
RTO unit atmospheric safety and associated flaring caused by loss of an electronic card and computer failure. Failure of a computer control card resulted in several control valves to fail in the closed position and the atmospheric safety valve then lifted to the flare.
Discharge Preventable - No Information Given
Non preventable released as failure of computer card could not be anticipated.
Notes/Remedial Actions
The card was replaced with a spare and the unit operations were reduced to minimize released.
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