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Accident # | 113772 |
State Police # | No Information Given |
Accident Date | 2009-03-29 |
Report Date | 2009-04-02 |
Follow-up Date | 0000-00-00 |
Follow-up: | No |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Benzene | 4 m | E506B exchanger | NO | NO | YES | 44.0 pounds |
Toluene | 16 m | Exchanger 506B | NO | NO | NO | 29.0 pounds |
Accident Classified As: Reportable Quantity
In the Aromatics Unit during the preparation of an overhead condensor for mechanical work. Prior to the leak, steam was introduced to the exchanger to free the exchanger of hydrocarbon. When steam was introduced, the channel box gasket failed.
There was no indication that the gasket was near failure.
A gasket leak occurred on exchanger E 506 B. Most of the release went to the sewer and some may have evaportated into the air. Gasket was isolated and secured. During the preparation of an overhead condenser for mechanical work stem was introduced to the exchanger per procedure to free the BOCs but the gasket failed and released hydrocarbon on to the concrete pad. It was 60% benzene and all had evaporated. Estimated 44 lbs of total release (over RQ). Non preventable release.
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