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Marathon Ashland Petroleum (3165), Garyville

LDEQ Accident Report

Accident #111750
State Police #09-0018
Accident Date2009-01-04
Report Date 2009-01-09
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
Volatile Organic Compounds (VOCs)168 minutes (2 hours 48 minutes)Tank 55-5 (Deasphalted Oil Storage Tank)NONOYES1,726.0 pounds

Accident Classified As:

Cause of Problem: Start Up, Shut Down

During a Rose Unit shutdown, the Rose Unit Deasphalted Oil (DAO) battery limits block valve was open and caused a chain reaction of butane leakage and water flashes. 1,726lbs of butane were released.

Discharge Preventable - Yes

"All aspects of this incident/upset are currently under investigation. Once the Tap Root analysis is completes, all recommendations will be implemented in a timely manner."

Notes/Remedial Actions

the event was "over before any corrective action could be taken." and the event is currently "under investigation".