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Accident # | 111420 |
State Police # | 08-07887 |
Accident Date | 2008-12-15 |
Report Date | 2008-12-22 |
Follow-up Date | 0000-00-00 |
Follow-up: | No |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Flammable Vapor | 9m | Opelousas Natural Gas header | NO | NO | YES | 2,951.5 pounds |
Accident Classified As: Reportable Quantity
An atmospheric safety valve was lifted on the Opelousas Natural Gas header at the Baton Rouge Refinery. The pressure of this header is maintained via a control valve which lets down high pressure natural gas to a low pressure natural gas header. The control valve that connected the high and low pressure headers failed and remained in an open position, resulting in increased pressures in the low pressure header. As the pressure increased, the controller called for the start of a booster compressor. Neither of the two booster compressors started immediately, resulting in the lifting of the low pressure header safety valve, resulting in the release.
The release occurred due to a failed control valve.
The energy booster compressor was started and pressure control was swapped to a separate control valve. This release exceeded the flammable vapor RQ.
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