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ExxonMobil Chemical Plant (286), Baton Rouge

LDEQ Accident Report

Accident #107422
PDF AvailablePDF
State Police #08-04421
Accident Date2008-07-22
Report Date 2010-03-23
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
Benzene2 mTanks # 8 and 9NONOYES23.0 pounds
1,3-Butadiene2 mTanks # 8 and 9NONOYES44.0 pounds
Benzene2mHydrocarbon recovery system, tanks 8 and 9NONOYES 
1,3-Butadiene2mHydrocarbon recovery system, tanks 8 and 10NONOYES 
Flammable Vapor2mHydrocarbon recovery system, tanks 8 and 11NONOYES 

Accident Classified As: No Information Given

Cause of Problem: Process Upset

Pressure vacuum vent for hydrocarbon recovery on storage tanks #8 and 9 exceeded for one minute. During transfer of material to storage tanks the pressure exceeded the pressure vacuum setting and VOC's were released.

Discharge Preventable - No Information Given

Notes/Remedial Actions

Pressure vacuum vent for hydrocarbon recovery on storage tanks 8 and 9 exceeded for 1 m. Two other events occurred within 24 hours of this event and will be addressed seperately. During transfer of material to storage tanks 8 and 9 at the WILA (wastewater improvement unit) the pressure exceeded the pressure vacuum setting and VOCs were released. The operations personnel immediately stopped pumping the material until the overpressure situation was resolved. They were investigating the source of volatile material in the WW. RQ exceeded for benzene and 1,3-butadiene.