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ExxonMobil Refinery (2638), Baton Rouge

LDEQ Accident Report

Accident #112910
PDF AvailablePDF
State Police #09-00854
Accident Date2009-02-20
Report Date 2009-02-26
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
Carbon Dioxide3mBateman Lake Natural Gas headerYESNONO53.1 pounds
Nitrogen3mBateman Lake Natural Gas headerNONONO33.3 pounds
Methane3mBateman Lake Natural Gas headerYESNOYES1,966.3 pounds
Ethane3mBateman Lake Natural Gas headerNONOYES63.8 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: Human Factors

Technician working on pressure instrument did not notify unit operating controller. Malfunction caused pressure control valve to open, which caused the pressure in the Bateman Lake Natural Gas header to exceed that of safety vavle set point.

Discharge Preventable - Yes

Notes/Remedial Actions

A total of 2030 pounds of flammable vapor was release which exceeds RQ. Pressure control valve was taken out of automatic control and placed into manual control.