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ExxonMobil Chemical Plant (286), Baton Rouge

LDEQ Accident Report

Accident #77758
PDF AvailablePDF
State Police #05-0920
Accident Date2005-03-22
Report Date 2005-03-28
Follow-up Date 0000-00-00

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Propane5h 40mflangeNONOYES280.2 pounds
Propylene5h 40mflangeNONOYES117.2 pounds
Isopropyl Ether5h 40mflangeNONONO4.0 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: Seal or Gasket

An assistant operator found a flange on a level instrument tap leaking at the top of a tower. Immediately the tower feed was shut off, and the operator began to controllably depressure the tower to the flare system so that the leak could be repaired.

Discharge Preventable - No

This was an unpredictable flange gasket failure. The gasket was made of a material compatible with this service.

Notes/Remedial Actions

Immediately feed was cut out of the tower. It was depressured as quickly as possible so that the leak could be repaired. The flange gasket has been replaced. Per ExxonMobil Chemical's usual procedures, the next time the tower is scheduled to go on turnaround at the end of 2006, all the tower gaskets will be replaced.