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Marathon Ashland Petroleum (3165), Garyville

LDEQ Accident Report

Accident #149428
State Police #13-02877
Accident Date2013-06-29
Report Date 2013-07-02
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 Gas2h 36mflange on process line in U212 Platformer UnitNONOYES5.9 pounds
Volatile Organic Compounds (VOCs)2h 36mflange on process line in U212 Platformer UnitNONOYES8.6 pounds
Benzene2h 36mflange on process line in U212 Platformer UnitNONOYES0.5 pounds
Xylene2h 36mflange on process line in U212 Platformer UnitNONONO0.3 pounds
Compressed Flammable Liquid2h 36mflange on process line in U212 Platformer UnitNONOYES3.5 pounds

Accident Classified As: Below Reportable Quantity (BRQ)

Cause of Problem: Seal or Gasket

On June 29, a small leak and hydrogen fire was observed on the 48" flange on the process piping going from Cell 2 of the Unit 212 Charge Heater to Reactor #2. The leak was hair line sized in width and no larger than 1" around the circumference of the flange.

Discharge Preventable - Under Investigation

Not known at this time; an incident investigation will be completed to determine the cause of this event.

Notes/Remedial Actions

Steam was applied to the flange to extinguish the flame and the flange was hot bolted to secure the leak. Once investigation is complete, recommendations will be implemented. There were no known offsite impacts.