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Marathon Ashland Petroleum (3165), Garyville

LDEQ Accident Report

Accident #129232
State Police #11-00779
Accident Date2011-02-12
Report Date 2011-02-18
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
Compressed Flammable Gas8hBlock Valve on Unit 12 Platformer Unit (FUG 018)NONOYES216.8 pounds

Accident Classified As:

Cause of Problem: Under Investigation

The bonnet to a block valve developed a leak to release butane. Cause of the leak was unknown, possibly weather related. Refinery letter states that "all aspects of this incident are currently under investigation."

Discharge Preventable - Under Investigation

Refinery letter states that "all aspects of this incident are currently under investigation."

Notes/Remedial Actions

BRQ. Steam was applied to the leak, and the valve was clamped.