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ExxonMobil Chemical Plant (286), Baton Rouge

LDEQ Accident Report

Accident #148832
PDF AvailablePDF
State Police #13-02246
Accident Date2013-05-21
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
Ethylene1d 7h 19mNONOYES3,709.0 pounds
Propylene1d 7h 19mNONOYES1,477.0 pounds
Benzene1d 7h 19mNONOYES850.0 pounds
Isoprene1d 7h 19mNONOYES414.0 pounds
1,3-Butadiene1d 7h 19mNONOYES959.0 pounds
Sulfur Dioxide1d 7h 19mNOYESNO30,097.0 pounds
Nitrogen Oxide1d 7h 19mNOYESYES4,089.0 pounds
Volatile Organic Compounds (VOCs)1d 7h 19mNONOYES5,267.0 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.