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Valero (26003), Norco

LDEQ Accident Report

Accident #93686
State Police #07-00468
Accident Date2007-02-01
Report Date 2007-02-08
Follow-up Date 0000-00-00
Follow-up: Yes

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Hydrogen Sulfide120 h 0 mThermal Oxidizer (TOX)NONONO1,785.0 pounds

Accident Classified As:

Cause of Problem: Equipment Failure

TOX, which oxidizes H2S to SO2, began to malfunction and cause several shutdowns.

Discharge Preventable -

Notes/Remedial Actions

During periods of prolonged outages, they reduced the refinery throughput in order to minimize the sulfur load to the TOX.