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Marathon Ashland Petroleum (3165), Garyville

Releases of Sulfur Oxides

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

North Ground Flare
Cause: Incident was the result of an electrical problem for the new production unit. A triplicated Triconex level indicator on the 1st stage suction drum malfunctioned, filled with liquid and tripped the wet gas compressor. Drum over-pressured which caused 205-PC-1511-V1 and V2 to open to the North Ground Flare. Released to air.

Followup: No

Notes: Reportable quantities for sulfur dioxide, hydrogen sulfide, and HRVOCs were exceeded. Remedial actions: The unit 205-delated coker reduced charge rate to minimize the release.
46,227.2 pounds