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ExxonMobil Chemical Plant (286), Baton Rouge

Releases of Pentane

LDEQ Accident Number
Accident Date		 Point Source(s) Notes Amount of Release
116503

2009-07-16		Pipe on valve stem
Cause: Packing leak on a valve stem which has a hand wheel was the source.

Followup: No

Notes: They were trying to stop the leak by repacking the valve. Written report was received by LDEQ but was not included in this report. Report stated that no RQs were exceeded.
113260

2009-03-09		WILA tanks #8 and 9

Cause: The release was caused by the pumping of low flash material into WILA Tanks 8 and 9. The material evolved a greater amount of vapor than the tank's vapor recovery system could manage. The evolution of the vapor caused the pressure in the tanks to exceed that of the pressure vent set point.

Followup: No

Notes: Introduction of low flash point material into these tanks was immediately halted. They could not expect the flash material to evolve too much vapors. Tanks could not handle the vapors and valve lifted. Operators will be trained to communicate better to prevent the overpressure happening again. RQs exceeded for benzene. Total release of hydrocarbons is 600 pounds.		159.0 pounds