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Accident # | 131805 |
State Police # | 11-03474 |
Accident Date | 2011-06-13 |
Report Date | 2011-06-20 |
Follow-up Date | 0000-00-00 |
Follow-up: | No |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Hydrogen Sulfide | 27h 18m | fin fan on the Cat Feed Hydrotreater | NO | NO | NO | 111.3 pounds |
Volatile Organic Compounds (VOCs) | 27h 18m | fin fan on the Cat Feed Hydrotreater | NO | NO | YES | BRQ |
Accident Classified As:
Aire release of hydrogen sulfide and compressed flammable gas from fin fan on Cat Feed Hydrotreater at Chalmette Refining. According to the refinery letter, "the Cat Feed Hydrotreater (CFHT)Unit lost power during a transformer switch, resulting in a pressure increase, and the subsequent leak on the E-7778 fin fan." It was determined that the cause was premature corrosion in the overhead fin fans of the CFHT Unit.
According to the Refinery Letter, "the pressure increase associated with the loss of power to the Unit did not exceed the rated pressure capacity for E-7778 fin fan and the fin fan was within its normal service life."
RQ of hydrogen sulfide. BRQ of VOCs. Inventory was removed from the unit and system pressure was reduced in order to stop the leak and make necessary repairs Chalmette Refining retained U.S. Risk Management to perform community monitoring during the event. The fin fan tube was isolated until repairs and/or replacement are completed.
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