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ExxonMobil Refinery (2638), Baton Rouge

LDEQ Accident Report

Accident #91339
PDF AvailablePDF
State Police #06-06406
Accident Date2006-10-13
Report Date 2006-10-19
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
Butene1h 15m5 light ends unit T-2 DepropanizerNONOYES265.0 pounds
Propylene1h 15m5 light ends unit T-2 DepropanizerNONOYES5.0 pounds
Volatile Organic Compounds (VOCs)1h 15m5 light ends unit T-2 DepropanizerNONOYES200.0 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs)1h 15m5 light ends unit T-2 DepropanizerNONONO46.0 pounds

Accident Classified As:

Cause of Problem: Seal or Gasket

the 5 Light Ends Unit T-2 Depropanizer tower reboiler had a leaking channel box. This leak is thought to have been caused by the failure of the channel box seal.

Discharge Preventable - No

Notes/Remedial Actions

This incident was not preventable because this reboiler channel box seal failure was unexpected. Remedial Measures - The seal will be replaced. The reportable quantity for butenes has been exceeded.