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Accident # | 110601 |
State Police # | 08-07187 |
Accident Date | 2008-11-05 |
Report Date | 2008-11-12 |
Follow-up Date | 2009-01-19 |
Follow-up: | Yes |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Sulfur Dioxide | ongoing | Furnace F-301 | NO | YES | NO | 19,395.0 pounds |
Accident Classified As: Reportable Quantity
Multiple holes have developed in the F-301 CO furnace box at the Catalytic Cracking Unit. The initial leak rate evaluation was completed 07/28/08 and SO2 emissions were BRQ. However on 11/5/08, the number of holes and hole size increased, and SO2 emissions were 726 pounds a day which exceeds RQ. On 11/21/08, the SO2 emissions reduced to 566 pounds a day which still exceeds RQ. On 12/5/08, the SO2 emissions were BRQ at 493 pounds/day. On 12/9/08, emissions reduced to 421 pounds per day. No further work will be perform on furnace due to the locations and personnel exposure of the remaining leaks. Air monitoring for SO2 was conducted at the furnace and near the fenceline after the RQ was exceeded. Readings of 13ppm, 25ppm, and 85ppm SO2 were detected at various levels 1 foot away from the furnace. Fenceline readings were all below detectable limits.
The lower temperature exposure and several of the higher temperature areas were patched to reduce the SO2 emissions to BRQ. The F-301 furnace will be shut down and repaired during the turnaround which is scheduled to begin January 2009. This release is RQ and ongoing.
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