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ExxonMobil Refinery (2638), Baton Rouge

LDEQ Accident Report

Accident #148943
State Police #13-02404
Accident Date2013-05-31
Report Date 2013-06-07
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
Flammable Vapor11 mC-600A hydrogen compressorNONOYES1,496.0 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: Power Failure

On May 31, 2013, the Baton Rouge Refinery PHLA unit experienced an atmospheric safety valve lift on the T-1 overhead safety valve. This event was due to an unanticipated power outage experienced at the Baton Rouge Refinery causing shutdown of the C-600A hydrogen compressor. Pressure was returned to normal operating conditions and the block valve below the safety valve was closed to reset the valve. The compressor was then returned to service. Approximately 1,496 pounds of flammable vapor were released as a result of this event.

Discharge Preventable - No

This event was due to an unanticipated power outage experienced at the Baton Rouge Refinery causing shutdown of C-600A hydrogen compressor.

Notes/Remedial Actions

Pressure was returned to normal operating conditions and the block valve below the safety valve was closed to reset the valve. The C-600A compressor was immediately returned to service.