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Shell Facility (3462), St. Rose

LDEQ Accident Report

Accident #99717
State Police #07-05757
Accident Date2007-09-24
Report Date 2007-09-27
Follow-up Date 2000-00-00
Follow-up: No

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Benzene8h 40m5-77 (St. Rose Flare)NONOYES10.4 pounds
Carbon Monoxide8h 40m5-77 (St. Rose Flare)NOYESNO5,128.0 pounds
Ethylbenzene8h 40m5-77 (St. Rose Flare)NONOYES1,000.2 pounds
Hexane8h 40m5-77 (St. Rose Flare)NONONO5,001.2 pounds
Nitrogen Oxide8h 40m5-77 (St. Rose Flare)NOYESYES34.0 pounds
Particulate Matter8h 40m5-77 (St. Rose Flare)NOYESNO5,004.0 pounds
Sulfur Dioxide8h 40m5-77 (St. Rose Flare)NOYESNO502.0 pounds
Toluene8h 40m5-77 (St. Rose Flare)NONONO100.9 pounds
Volatile Organic Compounds (VOCs)8h 40m5-77 (St. Rose Flare)NONOYES5,077.0 pounds
Xylene8h 40m5-77 (St. Rose Flare)NONONO101.2 pounds

Accident Classified As:

Cause of Problem: Power Failure

Power failure allowed two pressure relief valves to open to the flare to prevent over-pressuring of the unit

Discharge Preventable - No

Notes/Remedial Actions

The power failure was unexpected. They secured the process unit until the power was restored. Electrical support will work with the energy supplier to understand what caused the failure and take appropriate corrective action to prevent reoccurence. Word for word what happened the prior month