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Shell Facility (3462), St. Rose

LDEQ Accident Report

Accident #151683
State Police #13-04640
Accident Date2013-10-17
Report Date 2013-10-23
Follow-up Date 2013-11-20
Follow-up: Yes

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Benzene3h 30mtank 8553NONOYES3.1 pounds
Ethylbenzene3h 30mtank 8553NONOYES0.1 pounds
n-Hexane3h 30mtank 8553NONONO12.3 pounds
Hydrogen Sulfide3h 30mtank 8553NONONO1.3 pounds
Xylene3h 30mtank 8553NONONO0.2 pounds
Toluene3h 30mtank 8553NONONO1.9 pounds
Volatile Organic Compounds (VOCs)3h 30mtank 8553NONOYES1,270.8 pounds

Accident Classified As: Below Reportable Quantity (BRQ)

Cause of Problem: Instrument Failure

On October 16, 2013 at 1600 hours, the St. Rose operators discovered that a naphtha tank, Tank 8553, transferring naphtha landed on the roof legs. The radar gauge that was being used to monitor the level was believed to have been reading incorrectly; approximately 3 feet higher than the level should have been reading.

Discharge Preventable - Yes

Notes/Remedial Actions

Once the operators discovered that the tank landed on the roof legs, the transfer from Tank 8533 was immediately stopped, and product was allowed to gravitate back into the tank until the roof was floated off the legs. Currently, an investigation is occurring. The results from this investigation will be incorporated, where applicable, to prevent recurrence.