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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

No Information Given

Followup: No

Notes: Claims emission was below RQ

Rhodia barge
Cause: discharge from vessel's drip pan

Followup: No

Notes: Responsibility of the barge company
1.0 gallons

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

Alkylation Unit

Followup: No

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

Cause: malfunction of automatic sump level indicator gauge results in sump overflow

Followup: No

Notes: Sump level indicators repaired
101.0 pounds

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

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