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ExxonMobil Refinery (2638), Baton Rouge
LDEQ Accident Report
| Accident # | 129282 |
| State Police # | 11-00885 |
| Accident Date | 2010-01-14 |
| Report Date | 2011-02-24 |
| 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 |
| Flammable Vapor | 4h | Air Supply Control Valve | NO | NO | YES | 3,953.0 pounds |
Accident Classified As: Reportable Quantity
Cause of Problem: Seal or Gasket
A leak developed in the air supply control valves that regulate natural gas flow to the Mixed Gas Oil tanks. For safety reasons, the valves are designed to fail open, so loss of instrument air resulted in excess natural gas entering the tanks. The vapor recovery system could not recover all of the gas, and some natural gas was vented to the air.
Discharge Preventable - No
The leak was caused by an unanticipated leak in the instrument air supply. Safety equipment functioned as designed.
Notes/Remedial Actions
Release exceeds RQ. The instrument air was repaired, and the natural gas control valves were returned to service. LDEQ initially noted 13 months after incident, and there is no explanation provided for the delay. LDEQ report from 3/30/11 only states that incident will be deferred until next inspection.
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