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ExxonMobil Refinery (2638), Baton Rouge
LDEQ Accident Report
| Accident # | 133778 |
| State Police # | 11-05456 |
| Accident Date | 2011-09-03 |
| Report Date | 2011-09-08 |
| Follow-up Date | 0000-00-00 |
| Follow-up: |
Pollutants Released
| Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
| Hydrogen | 2m | Safety Valve | NO | NO | NO | 18.0 pounds |
| Gas Mixture | 2m | Safety Valve | NO | NO | YES | 2.0 pounds |
Accident Classified As: Below Reportable Quantity (BRQ)
Cause of Problem: Process Upset
A level controller went bad on a hot separator, causing a safety valve to release. The root cause of this event was a plugged level instrument that resulted in high unit pressures.
Discharge Preventable - No Information Given
Notes/Remedial Actions
Upon discovery of the venting, the level instrument controls were bypassed. This allowed unit pressures to return to normal which ended the release.
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