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ExxonMobil Refinery (2638), Baton Rouge
LDEQ Accident Report
| Accident # | 106262 |
| State Police # | 08-03346 |
| Accident Date | 2008-06-07 |
| Report Date | 2008-06-13 |
| Follow-up Date | 0000-00-00 |
| Follow-up: | Yes |
Pollutants Released
| Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
| Hydrocarbon | 3h 20m | Atmospheric release/FLARE-Flare 17,19,23 | NO | NO | YES | 93,672.0 pounds |
| Hydrogen Sulfide | 3h 20m | Atmospheric release/FLARE-Flare 17,19,23 | NO | NO | NO | 3,415.0 pounds |
| Sulfur Dioxide | 3h 20m | Atmospheric release/FLARE-Flare 17,19,23 | NO | YES | NO | 163.0 pounds |
| Nitric Oxide | 3h 20m | Atmospheric release/FLARE-Flare 17,19,23 | NO | YES | NO | 7.0 pounds |
| Benzene | 3h 20m | Atmospheric release/FLARE-Flare 17,19,23 | NO | NO | YES | 275.0 pounds |
| Hydrogen | 3h 20m | Atmospheric release/FLARE-Flare 17,19,23 | NO | NO | NO | 10,147.0 pounds |
| Methane | 3h 20m | Atmospheric release/FLARE-Flare 17,19,23 | YES | NO | YES | 5.0 pounds |
| n-Hexane | 3h20m | Atmospheric release/FLARE-Flare 17,19,23 | NO | NO | NO | 683.0 pounds |
| Cyclohexane | 3h20m | Atmospheric release/FLARE-Flare 17,19,23 | NO | NO | YES | 57.0 pounds |
| Flammable Vapor | NO | NO | YES |
Accident Classified As: Reportable Quantity
Cause of Problem: Equipment Failure
The C-101 Recycle Compressor on the HCLA unit shut down due to a fault in the transformer that supplies power to the compressor motor. The compressor trip automatically activated the units emergency depressurization procedures, which caused gases in the HCLA reactor system to be vented to the atmosphere via the condensable blow down drum. The transformer failed due to overheating. The air conditioner in the substation was found to have failed causing the temperature in the building to increase and the transformer to overheat. FLaring also occurred.
Discharge Preventable - Yes
Notes/Remedial Actions
The unit was depressurized automatically in accordance with the emergency procedures. Temporary ventilation conditioning was installed in the substation to cool the remaining electrical equipment. Total amount of flammable vapor released was 108,206 pounds. Total amount of VOC's released was 93,904 pounds
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