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Alon Refining (3116), Krotz Springs

Releases of Hexane

LDEQ Accident Number
Accident Date
Point Source(s) Notes Amount of Release
135089

2011-12-22
Crude Unit Flare and FCCU Unit Flare
Cause: Extreme cold front moving through area with heavy rains and "tomadic" winds. Power trip upset that resulted in unusual flaring. During severe weather and winds, power feeding the plant from the utility company tripped off, shutting down the entire refinery.

Followup: No

Notes: Safety reliefs vented to the flares as designed to control the upset. Permit limits were exceeded, but no reportable quantities were released. Flares smoked for approximately 5 minutes in compliance with Title V permit conditions.
48.2 pounds
135219

2011-11-14
FLARE: FCCU
Cause: FCC unit started up after 2 weeks of planned maintenance. Relief valves opened to flare when weight gas compressor for FCCU malfunctioned. Two odor complaints received by LDEQ connected to this accident. Starting unit for the wet gas compressor on the FCCU malfunctioned. 2 Citizen Complaints included: 135203 and 135197

Followup: No

Notes: Report states that Title V permit limits were exceeded. A site visit was made on 11/15/2011. Unit started up after two weeks of maintenance. Unauthorized Discharge Notification Report received 11/22/11. Report states that the maximum hourly permit limit was exceeded for hexane but no reportable quantities were exceeded. they did not realize until the next morning that RQ was exceeded.
30.9 pounds
138331

2012-03-25
FCCU regenerator stack
FLARE: FCCU flare
Cause: A leak in a slurry pump caused a flash fire and triggered the shutdown of the FCCU and associated units. Safety reliefs vented to the FCC Unit flare.

Followup: No

Notes: The flash fire was extinguished. Safety devices functioned until units were fully down.
319.5 pounds