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|State Police #||13-02817|
|Pollutant||Duration||Point Source||Greenhouse Gas||Criteria Pollutant||Ozone forming chemical||Amount of Release|
|1,3-Butadiene||25h 10m||WILA unit||NO||NO||YES||2,100.0 pounds|
|Benzene||25h 10m||WILA unit||NO||NO||YES||33.0 pounds|
Accident Classified As: Reportable Quantity
ON June 25, 2013, the Baton Rouge Chemical Plant WILA unit experienced a series of intermittent PV vent liftings on TK 8 & 9. This event was due to level instrument malfunction on a water/butadiene separation drum during startup of the BELA-5 unit caustic scrubber system. As a result, butadiene was sent to the WILA unit. The butadiene vaporized in TK 8 & 9 causing elevated pressures, resulting in the PV vent liftings. The source of butadiene was immediately stopped and the WILA feed line was purged of butadiene to the flare system. Approximately 33 pounds of benzene and 2100 pounds of 1,3-butadiene were released as a result of the event.
The source of butadiene was stopped and the WILA feed line was purged of butadiene to the flare system. Repaired level instrument/control valve. Repaired site glass to restore visibility and enable confirmation of level instrument reading. Conducted refresher training for the process organization on improved alarm response to low level readings.