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Motiva Enterprises (2719), Convent

LDEQ Accident Report

Accident #133665
PDF AvailablePDF
State Police #11-05564
Accident Date2011-09-08
Report Date 2011-09-15
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 Dioxide32mRefinery Flare No.1, No.2 and No.3NOYESNO1,952.0 pounds
Hydrogen Sulfide32mRefinery Flare No.1, No.2 and No.3NONONO3.7 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: Equipment Failure

Motiva states that initially the upset began after routine maintenance on a Wet Gas Compressor flow transmitter. The Suspected Controller sent a signal to open the anti-surge spill-back creating a recycle from the compressor discharge to suction. A compressor malfunctioned causing flaring in Refinery Flare No.1, Flare No.2 and Flare No.3 cumulatively beyond permit limit and the release of 2,097 pounds of SO2.

Discharge Preventable - No

The Follow-Up Report stated that the release was not preventable. All testing and inspections done after the event did not reveal any issues with the controller and the conditions could not be recreated by technical experts while troubleshooting.

Notes/Remedial Actions

LDEQ and Follow-Up provided, but there was no Refinery Letter included. Motiva states that there was a non-preventable release of approximately 1,952 pounds of SO2 and 3.68 pounds of H2S. The Catalytic cracking controllers (CCC) were replaced and the data recording software was upgraded and is being analyzed.