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Phillips 66 (2418), Belle Chasse

LDEQ Accident Report

Accident #133170
PDF AvailablePDF
State Police #11-04988
Accident Date2011-08-17
Report Date 2011-08-23
Follow-up Date 0000-00-00
Follow-up: No

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Sulfur Dioxide1h 28mTail Gas Treater/Sulfur Incinerator Stack (591-D-21X)NOYESNO355.0 pounds
Sulfur Dioxide25mFLARE: Low Pressure Flare (308F-D-1)NOYESNO375.0 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: Equipment Failure

During operational adjustments to the air flow to SRU-592 Claus unit, the air blower discharge pressure decreased below the set point and diverted gas from the tail gas treater (TRT) to the SRU incinerator (591-D-21X) to the Low Pressure Flare (308F-D-1).

Discharge Preventable - No

The discharge was unpreventable due to an unexpected decrease in discharge pressure in the SRU-592 Claus unit air blower.

Notes/Remedial Actions

SRU operations were stabilized allowing the flare valve to be closed and the tail gas to be routed back into the Tail Gas Treater.