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|State Police #||09-01143|
|Pollutant||Duration||Point Source||Greenhouse Gas||Criteria Pollutant||Ozone forming chemical||Amount of Release|
|Sulfur Dioxide||28 minutes||308F-D-1 (Low Pressure Flare)||NO||YES||NO||627.0 pounds|
|Nitrogen Oxide||28 minutes||308F-D-1 (Low Pressure Flare)||NO||YES||YES||5.0 pounds|
|Hydrogen Sulfide||28 minutes||308F-D-1 (Low Pressure Flare)||NO||NO||NO||6.0 pounds|
|Hydrocarbon||28 minutes||308F-D-1 (Low Pressure Flare)||NO||NO||YES||46.5 pounds|
Accident Classified As: Below Reportable Quantity (BRQ)
Problems with the Coker drum steam condensate operations caused inadequate heating of the"inactive Coke drum. To avoid shutting down the Coker Unit, Operations personnel switched Coker feed from teh "active" drum into the "inactive" drum that was much cooler than normal operating systems. The switch into a cooler coke drum reduced the flow to the 891-K-1 compressor and caused the "compressor kickback" control scheme to activate. This scheme caused the compressor kickback valve to open, sending additional flow to the compressor's suction drum (891-V-15). The pressure in the compressor suction drum increased to the point that the pressure control system opened the valve to the Low PRessure Flare (308F-D-1).
Unexpected pressure differential in the compressor suction drum vessel (891-V-15).
Coker unit operations and pressure were stabilized and the valve to the flare was closed.