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ExxonMobil Refinery (2638), Baton Rouge

Releases of Gas Mixture

LDEQ Accident Number
Accident Date		 Point Source(s) Notes Amount of Release
133778

2011-09-03		Safety Valve
Cause: 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.

Followup:

Notes: Upon discovery of the venting, the level instrument controls were bypassed. This allowed unit pressures to return to normal which ended the release.		2.0 pounds