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ExxonMobil Refinery (2638), Baton Rouge

LDEQ Accident Report

Accident #116863
PDF AvailablePDF
State Police #09-04089
Accident Date2009-07-28
Report Date 2009-08-04
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
Sulfur Dioxide50mflare systemNOYESNO1,161.0 pounds
Nitrogen Oxide50mflare systemNOYESYESBRQ
Volatile Organic Compounds (VOCs)50mflare systemNONOYESBRQ
Benzene50mflare systemNONOYESBRQ
Hydrogen Sulfide50mflare systemNONONOBRQ

Accident Classified As:

Cause of Problem: Start Up, Shut Down

PCLA-2 Fluid Catalytic Cracking Unit restart caused discharge. Unit unexpectedly shutdown earlier in the day. Restart caused pressure to build and ultimately flaring.

Discharge Preventable - No

Cause of overhead gas production surge is not yet understood. It is under investigation.

Notes/Remedial Actions

RQ for SO2 exceeded. State Police HAZMAT report and company reports differ in pollutants. Feed was reduced o the unit, temperatures within unit was decreased and compressor was restarted.