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ExxonMobil Chemical Plant (286), Baton Rouge
LDEQ Accident Report
| Accident # | 148832 |
| State Police # | 13-02246 |
| Accident Date | 2013-05-21 |
| Report Date | 2013-05-29 |
| 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 |
| Ethylene | 1d 7h 19m | NO | NO | YES | 3,709.0 pounds | |
| Propylene | 1d 7h 19m | NO | NO | YES | 1,477.0 pounds | |
| Benzene | 1d 7h 19m | NO | NO | YES | 850.0 pounds | |
| Isoprene | 1d 7h 19m | NO | NO | YES | 414.0 pounds | |
| 1,3-Butadiene | 1d 7h 19m | NO | NO | YES | 959.0 pounds | |
| Sulfur Dioxide | 1d 7h 19m | NO | YES | NO | 30,097.0 pounds | |
| Nitrogen Oxide | 1d 7h 19m | NO | YES | YES | 4,089.0 pounds | |
| Volatile Organic Compounds (VOCs) | 1d 7h 19m | NO | NO | YES | 5,267.0 pounds |
Accident Classified As: Reportable Quantity
Cause of Problem: Instrument Failure
On May 21, the Baton Rouge Chemical Plant experienced a turbine trip at the OLA-2X unit. The material released was sent to the site flare gas system. After further investigation, it was determined that this event was due to the failure of the fuel gas control valve servomechanism actuator. The servomechanism actuator failed due to particulate matter build up in the hydraulic oil system.
Discharge Preventable - Yes
Notes/Remedial Actions
Immediate remedial action was to reduce unit feed rates to help minimize emissions. The hydraulic oil filters and servomechanism actuators were replaced prior to restarting the machine.
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