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ExxonMobil Refinery (2638), Baton Rouge

LDEQ Accident Report

Accident #102960/102918
State Police #08-00732/08-00744
Accident Date2008-02-08
Report Date 2008-02-15
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
Hydrocarbon16h 38 mFLARE-Flare 5,17,19NONOYES159.0 pounds
Hydrogen Sulfide16h 38 mFLARE-Flare 5,17,19NONONO1.0 pounds
Sulfur Dioxide16h 38 mFLARE-Flare 5,17,19NOYESNO445.0 pounds
Nitric Oxide16h 38 mFLARE-Flare 5,17,19NOYESNO48.0 pounds
Nitrogen Dioxide16h 38 mFLARE-Flare 5,17,19NOYESYES8.0 pounds
Butene16h 38 mFLARE-Flare 5,17,19NONOYES6.0 pounds
Ethylene16h 38 mFLARE-Flare 5,17,19NONOYES6.0 pounds
Propylene16h 38 mFLARE-Flare 5,17,19NONOYES15.0 pounds

Accident Classified As:

Cause of Problem: Process Upset

Process Upset-recycle gas compressor shut down due to process upset./Other-high pressure in the refinery gas collection system due too a high volume of vent gas from other refinery units.

Discharge Preventable - Yes

Notes/Remedial Actions

Process upset conditions at the catalytic cracking unit were resolved and recycle gas compressor was restarted to stop flaring. When the high pressure burner line overpressured, efforts were made to reduce the amount of gas sent to HPBL and increase gas amount taken by Enterg