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|State Police #||07-2169|
|Pollutant||Duration||Point Source||Greenhouse Gas||Criteria Pollutant||Ozone forming chemical||Amount of Release|
|Sulfur Dioxide||15 m||308F-D-1 Low Pressure Flare||NO||YES||NO||1,136.0 pounds|
|Hydrogen Sulfide||15 m||308F-D-1 Low Pressure Flare||NO||NO||NO||11.0 pounds|
Accident Classified As:
The Delyaed Coking Unit compressor 891 K-1 tripped offline due to high level in the suction drum, 891-V-15. Liquid from the DCU combination tower overhead drum, 891-V-12, carried over to V-15 due to plugged strainers on the V-12 on the water boot pumps and hydrocarbon pumps or some other flow restriction. The compressors suction stream is automatically diverted to the Low Pressure Flare during and emergency shutdown of the compressor.
Flow restriction that caused the accident was unanticipated.
Operators tried to mitigate the accident by cleaning the strainers and tried to draw liquid from V-15 to the flare drums. Attempts were unsuccessful and the K-1 compressor still tripped. Compressor was purged of liquid and restarted. ConocoPhillips claims "no offsite impact" from fenceline monitoring.