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Shell Facility (3462), St. Rose

Causal Factor: Instrument Failure

LDEQ Accident Number
Accident Date		 Point Source(s) Notes Amount of Release
151683

2013-10-17		tank 8553
Cause: 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.

Followup: Yes

Notes: 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.		Benzene: 3.1 pounds
Ethylbenzene: 0.1 pounds
n-Hexane: 12.3 pounds
Hydrogen Sulfide: 1.3 pounds
Xylene: 0.2 pounds
Toluene: 1.9 pounds
Volatile Organic Compounds (VOCs): 1,270.8 pounds