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Accident # | 79529 |
State Police # | 05-03628 |
Accident Date | 2005-06-02 |
Report Date | 2005-06-09 |
Follow-up Date | 0000-00-00 |
Follow-up: | No |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Nitric Oxide | 2h 32m | Hydrocracker Light Ends Plant Butane Splitter Tower | NO | YES | NO | 11.0 pounds |
Accident Classified As:
The Hydrocracker Light Ends Plant (LEP) Butane Splitter Tower began to overpressure; moves in operating temperature and pressure on the LEP Depropanizer, actuated by the refinery advanced system controls system, allowed propane to exit via Depropanizer Bottoms, to the Butane Splitter, which is not designed to off-gas light materials such as propane.
Cooler back flushing was conducted in order to ensure that maximum cooling was available. Refinery personnel made operational adjustments that ended the incident. Various level controllers and analyzers associated with the Lep Depropanizer and Butane Splitter were checked for proper operation.
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