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Calcasieu Refining (3585), Lake Charles

Causal Factor: Process Upset

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

Pressure Relief Valve on Naphtha line
Cause: Release from a safety valve. Valve was set to 100 psi instead of 260 psi

Followup: No

Notes: Naphtha overflowed sump into containment area. Naphtha recovered and transferred to wastewater treatment plant.
Benzene: 22.0 pounds
Naphthenic Crude: 2,800.0 gallons

wastewater treatment unit
Cause: upset in waste water treatment system resulted in discharge of mixture of crude oil and refined products into the Calcasieu River--bio die off caused biomass to be released from the unit, collected in weir system in outfall

Followup: No

Notes: No refinery letter; NRC report attached.
Crude Oil: 1.0 gallons