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Marathon Ashland Petroleum (3165), Garyville

LDEQ Accident Report

Accident #115394
State Police #091701
Accident Date2009-06-01
Report Date 2009-06-04
Follow-up Date 2009-06-05
Follow-up: Yes

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Hydrogen Sulfide30 minutesUnit 15 HGO hydrotreaterNONONO20.0 pounds
Volatile Organic Compounds (VOCs)30 minutesUnit 15 HGO hydrotreaterNONOYES24.0 pounds
Ethane30 minutesUnit 15 HGO hydrotreaterNONOYES55.2 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs)30 minutesUnit 15 HGO hydrotreaterNONONO0.9 pounds

Accident Classified As:

Cause of Problem: Equipment Failure

Pin-hole leak in unit 15's hot separator overhead fin fan.

Discharge Preventable - No

Marathon claims it was an unforeseeable failure.

Notes/Remedial Actions

Fin fan was blocked in and tube isolated.