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CITGO Petroleum (1250), Lake Charles

Releases of Nitrous Oxide

LDEQ Accident Number
Accident Date		 Point Source(s) Notes Amount of Release
111418

2008-12-14		Unicracker Unit
Cause: see notes

Followup: No

Notes: Flash fire in the Unicracker Unit
118282

2009-09-29		No information given
No information given.
Cause: No RQs were exceeded so no further information is given.

Followup: No

Notes: No information given
121535

2010-02-17		FLARE: B8 flare
Cause: relief valve at the C4 unit released sending sour hydrocarbons to the B8 flare. FLARE.

Followup: Yes

Notes: no info given
129988

2011-03-17		Sour Gas Line
Cause: State police report states that there was a leak in a three inch line under a relief valve at the vacuum unit. Product of the release was sour gas and went off-site.

Followup: No

Notes: BRQ. Line was blocked and repaired. Air monitoring was performed in the plant area, and no readings were indicated.
145571

2012-12-26		Coker 2 Unit
Cause: A compressor upset on the Coker 2 Unit caused the gases to go to the flare.

Followup: No

Notes: An unknown amount of sulfur dioxide, hydrogen sulfide, and nitrous oxide went to the flare as a result of this incident. Air monitoring was being preformed up to the fence line and readings are unknown at this time.