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CITGO Petroleum (1250), Lake Charles

Releases of Chlorine Gas

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

Vacuum Truck

Followup: No Information Provided

Notes: 2 workers were offloading bleach from tank at Citgo's wastewater plant into a vacuum truck. 2 workers were overcome by fumes and taken to hospital. Claims no RQ was exceeded.

Cause: Corrosion caused a chlorine leak from a section of 1/2 inch tubing leading to a pressure transmitter.

Followup: Yes

Notes: Tubing was isolated and depressurized.
12.0 pounds

Fluidized Catalytic Cracking Units (FCCU) stacks; Wet Gas Scrubber
Cause: Hydrogen Cyanide and Chlorine were identified in the Fluidized Catalytic Cracking units vent stacks during stack testing mandated by the EPA's information collection request. This has been a continuous and on-going release

Followup: Yes

Notes: CITGO's review of the stack testing and operating data indicates that an air release of hydrogen cyanide and chlorine exceeded a reportable quantity although no quantities were indicated in the report. CITGO was required by EPA to conduct stack testing on 1 of its 3 Fluidized Catalytic Cracking units and report such stack test results before August 31, 2011 to the EPA. The ICR required that CITGO test for hydrogen cyanide and chlorine from this unit. 30 day letter submitted on September 21, 2011 and 1 year follow-up submitted August 24, 2012. CITGO has been releasing between 1,155 lbs to 5,535 lbs of hydrogen cyanide a day for a total of 846,479 lbs per year. They have also been releasing 88 lbs to 116 lbs per day of chlorine for a total of 34,111 lbs per day.
34,111.0 pounds