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Valero (1238), Meraux

LDEQ Accident Report

Accident #103793
State Police #08-01348
Accident Date2008-03-10
Report Date 2008-03-17
Follow-up Date 0000-00-00
Follow-up: No Information Provided

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Sulfur Dioxide50mFLARE- #2 Sour Water Stripper Malfunction / South FlareNOYESNO698.0 pounds

Accident Classified As:

Cause of Problem: Equipment Failure

faulty transducer on the control valve actuator

Discharge Preventable - No

Notes/Remedial Actions

This was a self report by Murphy. They verbally called in on 3/10/2008 and provided written notification on 3/17/2008. This is important because in their initial verbal report, the list sulfur dioxide, hydrogen sulfide, and volatile organic compounds ashaving been released. However, in their written report they only list sulfur dioxide as having been released. This accident was not preventable because the malfunction of the transducer was not a predictable event. Remedial Measures - MOUSA replaced faulty valve transducer with an upgraded, more robust model. MOUSA is identifying critical pressure control valves that have these particular trasducer models in order to determine which would benefit from upgraded transducers.