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Marathon Ashland Petroleum (3165), Garyville

Causal Factor: Corrosion

LDEQ Accident Number
Accident Date
Point Source(s) Notes Amount of Release

20 inch Ballast Water line from Dock 2
Cause: 20 inch ballast water line underneath main deck platform was leaking from a hole.

Followup: No

Notes: Block valves to the line were closed. Absorbent boom deployed. Air Monitoring Team dispatched to monitor the levee for hydrocarbons.
Oil: 96.6 gallons

Platformer Debutanizer Trim Cooler, #1 Cooling Tower EQI: 61a-74
Cause: A high LEL was found at the #1 cooling tower, operations started checking for leaks and found that the debutanizer overhead trim cooler, 12-1309, was leaking hydrocarbons into the cooling water. Leak caused by under deposit corrosion.

Followup: Yes

Notes: The debutanizer trim cooler was isolated and leaking tubing plugged.
Methane: 0.9 pounds
Ethane: 36.9 pounds
Propane: 157.8 pounds
Isobutane: 102.0 pounds
n-Butane: 504.0 pounds
1-Pentene: 54.0 pounds
n-Pentane: 28.0 pounds
Volatile Organic Compounds: 1,779.5 pounds
No LDEQ Reported

Cause: Refinery letter states that corrosion on a three inch line under the dock resulted in pinhole leaks. OFFSITE: Material leaked into the Mississippi River.

Followup: No

Notes: An air monitoring team was dispatched, and there were not offsite impacts detected. The line was blocked in immediately. Boom was deployed. The oil spill contractor, EHS, was called out. EHS set more boom and placed absorbent pads within it. A clamp was placed on the line. Line will be replaced and not used until replacement occurs.
Oil: 55.0 gallons

Pipe leak at a pump in Unit 10 Crude unit
Cause: On December 4 at approximately 8:00 hours, there was a pinhole leak in 2 inch insulated piping. Corrosion caused the pinhole. Report states that none of the emitted pollutants are above reportable quantity levels. However, the RQ level for Flammable Liquids was exceeded during this event.

Followup: No

Notes: The unit was shut down to repair the leak as the piping could not be isolated. This piping will be routinely inspected and an upstream block valve was added to enable the isolation of this line. The material released was crude oil. It was entirely contained within the unit and routed to the Oily Water Sewer system.
Volatile Organic Compounds (VOCs): 711.0 pounds
Benzene: 1.0 pounds
Xylene: 7.3 pounds
Compressed Flammable Gas: 69.7 pounds
Flammables: 641.5 pounds

Pinholeleak on diesel fuel line of emergency fire water pump
Cause: An oil sheen was noticed at Dock #2. The source was found to be a pinhole leak in a 3/4" fuel line that developed as a result of corrosion. Besides the sheen, there was no other reported off-site impact. The emission point was a pinhole leak on the diesel fuel line of an emergency fire water pump at Dock #2.

Followup: No

Notes: Boom was deployed to prevent the diesel from floating downriver. An incident investigation was initiated on 10/15/13 and is currently in progress. No follow up has been posted to EDMS database as of 3/12/2014.
Diesel Fuel: 74.8 gallons