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ExxonMobil Refinery (2638), Baton Rouge
LDEQ Accident Report
| Accident # | 113059 |
| State Police # | 09-01012 |
| Accident Date | 2009-03-02 |
| Report Date | 2009-03-09 |
| 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 |
| Propylene | 1 hr 54m | A and B exchanger on #4 depropanizer | NO | NO | YES | 165.0 pounds |
| Xylene | 1 hr 54m | A and B exchanger on #4 depropanizer | NO | NO | NO | BRQ |
| Benzene | 1 hr 54m | A and B exchanger on #4 depropanizer | NO | NO | YES | BRQ |
| Toluene | 1 hr 54m | A and B exchanger on #4 depropanizer | NO | NO | NO | BRQ |
Accident Classified As: Reportable Quantity
Cause of Problem: Corrosion
Hydrocarbon leak coming from one of two banks of exchangers of the #4 depropanizer. It is leaking from the shell side of the exchanger into the cooling tower water in the tube side of the exchanger. Leak was the result of unexpected corrosion of exchanger tubes.
Discharge Preventable - No
Leak was the result of unexpected corrosion of exchanger tubes.
Notes/Remedial Actions
RQ for propylene exceeded. Leaking exchangers isolated as soon as leak location determined. Tower was shut down and leaking tubes in overhead condensers were plugged to prevent further release.
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