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ExxonMobil Chemical Plant (286), Baton Rouge

Releases of Methanol

LDEQ Accident Number
Accident Date		 Point Source(s) Notes Amount of Release
135902

2011-12-14		PV vents in tank field on OXO vapor recovery system
Cause: OXO vapor recovery system compressors malfunctioned causing an increase in the system pressure which resulted in tank vents opening to the atmosphere. Discharge check valve was leaking through causing the system to circulate and decrease the compressor's effectiveness. In combination with another event (11-07738) from the preceding 24 hours the RQ for flammable vapor was exceeded.

Followup: No

Notes: Inconsistency in reported quantities released. Initital SPOC verbal notification listed release of 403 lbs of Methane to the atmosphere through PV vents. This release occurred when a OXO vapor recovery system compressor tripped off which lead to the tank vents being opened. A spare compressor was used to reduce system pressure. The check valve was replaced, and the compressor internal cooler has been cleaned.		0.0 pounds