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ExxonMobil Refinery (2638), Baton Rouge

LDEQ Accident Report

Accident #No LDEQ Number Available
State Police #05-04540
Accident Date2005-07-08
Report Date 2005-07-12
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
n-Pentane2 hours, 35 minutesalkylation unitNONONO112.0 pounds
Sulfuric Acid2 hours, 35 minutesalkylation unitNONONO10,269.0 pounds
Propane2 hours, 35 minutesalkylation unitNONOYES87.0 pounds
Isobutane2 hours, 35 minutesalkylation unitNONOYES2,650.0 pounds
n-Butane2 hours, 35 minutesalkylation unitNONONO1,418.0 pounds
2,3-Dimethylbutane2 hours, 35 minutesalkylation unitNONOYES96.0 pounds
2-Methylpentane2 hours, 35 minutesalkylation unitNONOYES54.0 pounds
3-Methylpentane2 hours, 35 minutesalkylation unitNONOYES26.0 pounds
2-Methylhexane2 hours, 35 minutesalkylation unitNONOYES23.0 pounds
2,3-Dimethylpentane2 hours, 35 minutesalkylation unitNONOYES49.0 pounds
3-Methylhexane2 hours, 35 minutesalkylation unitNONOYES22.0 pounds
Isooctane2 hours, 35 minutesalkylation unitNONOYES676.0 pounds
2,3,3-Trimethylpentane2 hours, 35 minutesalkylation unitNONOYES75.0 pounds
2,4-Dimethylhexane2 hours, 35 minutesalkylation unitNONOYES52.0 pounds
2,3,4-Trimethylpentane2 hours, 35 minutesalkylation unitNONOYES344.0 pounds
2,3,3-Trimethylpentane2 hours, 35 minutesalkylation unitNONOYES402.0 pounds
2-Methylheptane2 hours, 35 minutesalkylation unitNONOYES5.0 pounds
4-Methylheptane2 hours, 35 minutesalkylation unitNONOYES28.0 pounds
3,4-Dimethylhexane2 hours, 35 minutesalkylation unitNONOYES13.0 pounds
3-Methylheptane2 hours, 35 minutesalkylation unitNONOYES13.0 pounds
2,2,5-Trimethylhexane2 hours, 35 minutesalkylation unitNONOYES161.0 pounds
n-Nonane2 hours, 35 minutesalkylation unitNONONO1,271.0 pounds
2,3-Dimethylhexane2 hours, 35 minutesalkylation unitNONOYES71.0 pounds
2,5-Dimethylhexane2 hours, 35 minutesalkylation unitNONOYES98.0 pounds
2,4-Dimethylpentane2 hours, 35 minutesalkylation unitNONOYES73.0 pounds
2,2,3-Trimethylbutane2 hours, 35 minutesalkylation unitNONOYES6.0 pounds
2,2-Dimethylbutane2 hours, 35 minutesalkylation unitNONOYES2.0 pounds
Isopentane2 hours, 35 minutesalkylation unitNONOYES407.0 pounds

Accident Classified As:

Cause of Problem: Seal or Gasket

Discharge Preventable - No

Notes/Remedial Actions

water was sprayed on the vapor cloud to mitigate hazards from the release. Upstream and downstream block valves had to be closed to stop the leak; this was not preventable because the gasket failed- it was an appropriate gasket for the service