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ExxonMobil Refinery (2638), Baton Rouge
LDEQ Accident Report
| Accident # | 136413 |
| State Police # | 12-00131 |
| Accident Date | 2012-01-09 |
| Report Date | 2012-01-16 |
| Follow-up Date | 0000-00-00 |
| Follow-up: | No |
Pollutants Released
| Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
| Hexane | 2m | PHLA unit T-2 tower | NO | NO | NO | 8.9 pounds |
| Benzene | 2m | PHLA unit T-2 tower | NO | NO | YES | 6.6 pounds |
| Flammable Vapor | 2m | PHLA unit T-2 tower | NO | NO | YES | 2,220.0 pounds |
Accident Classified As: Reportable Quantity
Cause of Problem: Instrument Failure
Normal operating overhead pressure was exceeded on the PHLA unit T-2 tower due to a pressure controller valve malfunction.
Discharge Preventable - No
Not preventable due to unanticipated overpressure of the T-2 tower.
Notes/Remedial Actions
The bypass valve was opened to reduce tower pressure, the safety valve was reset, and the unit was returned to normal operating conditions. The pressure controller instrument was replaced immediately following the event. Only the reportable quantity for flammable vapor was exceeded.
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