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CITGO Petroleum (1250), Lake Charles
LDEQ Accident Report
| Accident # | 118959 |
| State Police # | 093459 |
| Accident Date | 2009-10-23 |
| Report Date | 2009-10-28 |
| Follow-up Date | 0000-00-00 |
| Follow-up: | No |
Pollutants Released
| Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
| Hydrogen Sulfide | 2 hours 18 minutes | Tail gas II unit | NO | NO | NO | 439.0 pounds |
Accident Classified As:
Cause of Problem: Equipment Failure
The Tail Gas II unit stripper tower began to pressure up due to flow restrictions in the overhead gas. The flow restriction diminished the ability of the stripper tower to remove RSC compounds from the amine solution and thus diminished the capacity of the amine solution to adsorb RSC compounds in the absorber tower. This resulted in elevated RSC levels in the atmospheric vent gas.
Discharge Preventable - No
The rapid increase in RSC levels could not have been predicted.
Notes/Remedial Actions
A hot condensate wash was conducted to dissolve salts in the stripper overhead system.
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