Home | Search | Emissions | Pollutants | About the Database |
Accident # | 84247 |
State Police # | 05-08611 |
Accident Date | 2005-12-02 |
Report Date | 2005-12-08 |
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 | 1h 41m | Pressure Safety Value | NO | YES | NO | 57.0 pounds |
Accident Classified As: No Information Given
Unexpected blockage caused backpressure in the unit causing a PSV to relieve to the flare.
Not preventable. This release was caused by an unanticipated operations consequence and is not considered to be preventable at this time.
A relief valve failed..NOX The refinery reported a release of Nitric Oxide (NO) on 12/2/05 at approximately 0743 hours causing flaring. The cause of the flaring was identified and isolated at approximately 0923 hours. Total duration was approximately one hour and 41 minutes. Excess flare volume was identified and a search of process units was initiated to locate the source. At 9:23am the source of the flaring was identified and isolated. Operations personnel determined that an unexpected blockage (liquid and/or hydrate) caused back pressure in the unit, causing a Pressure Safety Valve (PSV) to relieve to the flare. Upon identification of the flaring source, emissions calculations were completed and agency notifications made. The search located the source of excess flare gas. The PSV which relieved to the flare was isolated, ending the incident. The incident will be reviewed with affected operations personnel to make them aware of the potential implications of unusual line-ups and their potential environmental implications.
Connect With Us: