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ExxonMobil Refinery (2638), Baton Rouge

LDEQ Accident Report

Accident #90267
State Police #06-05380
Accident Date2006-08-26
Report Date 2006-08-31
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
Butene3h 2mFLARE - #17 and #19 FlaresNONOYES307.0 pounds
Sulfur Dioxide3h 2mFLARE - #17 and #19 FlaresNOYESNO2,964.0 pounds
Nitrogen Dioxide3h 2mFLARE - #17 and #19 FlaresNOYESYES26.0 pounds
Propylene3h 2mFLARE - #17 and #19 FlaresNONOYES220.0 pounds
Nitrogen Oxide3h 2mFLARE - #17 and #19 FlaresNOYESYES154.0 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: Instrument Failure

the level indicator on the #4 Light Ends T-103 amine scrubber tower failed to function properly. Excess gas was flared in the #17 and #19 flares.

Discharge Preventable - No

Notes/Remedial Actions

This incident was not preventable because failure of the level instrumentation was unexpected. Remedial Measures - an investigation is ongoing and the appropriate follow-up action will be completed. As a result of the faulty level indication, hydrocarbons were carried under to the amine regeneration unit and subsequently the refinery gas collection unit. The gas collection unit was unable to handle the increased load and therefore the excess gas was flared in the #17 and #19 flares.&##34;Reportable quantities for sulfur dioxide, nitrogen oxide, nitrogen dioxide, butenes, and propylene were exceeded