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CITGO Petroleum (1250), Lake Charles

Releases of Sulfuric Acid

LDEQ Accident Number
Accident Date		 Point Source(s) Notes Amount of Release
81380

2005-08-16		No Information Given
Cause:

Followup: No

Notes: Claims emission was below RQ
05-BB006-803

2005-04-19		Rhodia barge
Cause: discharge from vessel's drip pan

Followup: No

Notes: Responsibility of the barge company		1.0 gallons
77551

2005-03-13		F5 fresh sulfuric acid storage tank in Acid Plant
Cause: leak on a 3 inch discharge line that comes off 12 inch tank sump

Followup: No Information Provided

Notes: An existing leak that had neem previously clamped migrated past the sealing surface of the clamp. The geometry of the clamp and the sump are such that the inspectino dept. could not monitro metal thickness or metal loss under the clamp. F5 Sumps are being upgraded to stainless steel		782,754.0 pounds
97781

2007-07-11		Alkylation Unit
Cause:

Followup: No

Notes: A bleeder valve break at the Alkylation Unit caused emission.
107976

2008-08-13		C-Dock
Cause: malfunction of automatic sump level indicator gauge results in sump overflow

Followup: No

Notes: Sump level indicators repaired		101.0 pounds
116195

2009-07-02		Acid tank
Cause: While a contractor was filling an acid tank in the powerhouse area he spilled 96 gallons (1433 lbs) of sulfuric acid.

Followup: No

Notes: Spill was contained. Reviewing the procedures used by the contractor.		1,433.0 pounds
126108

2010-09-02		Transfer line nar the C Dock area
Cause: Refinery letter states that "during transfer operations near C-Dock, a leak was discoverd in the transfer pipe. The leak resulted in the release of Sulfuric Acid to the ground. The leak was due to a hole in the transfer pope." OFF-SITE IMPACT: LDEQ & State Police reports state that some of the acid lead to the 004 outfall and were released into the Calcasieu River. Refinery letter states that there were no off-site impacts.

Followup: No

Notes: RQ. Reportable quantities were exceeded during this incident. LDEQ report states that "the Sulfuric Acid transfer was shut down and emergency response personnel began containment and cleanup efforts. The transfer pipe was repaired to prevent reoccurrence. Soda ash was applied to the affected area to neutralize the acid." Sulfuric Acid is extremely hazardous.		1,774.0 pounds