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Valero (1238), Meraux

LDEQ Accident Report

Accident #99828
State Police #07-05856
Accident Date2007-09-28
Report Date 2007-11-26
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 Dioxide62h 45mFLARE - the episode resulted from a valve misalignment involving the uncommanded closure of the SCOT inlet control valve, which triggered the unit's automatic Safety Instrumented Shutdown process. A root cause analysis concluded that a loose wirNOYESNO23,988.0 pounds

Accident Classified As:

Cause of Problem: Other

the episode resulted from a valve misalignment involving the uncommanded closure of the SCOT inlet control valve, which triggered the unit's automatic Safety Instrumented Shutdown process. A root cause analysis concluded that a loose wire tripped the fuse supplying power to the valve solenoid

Discharge Preventable - No

Notes/Remedial Actions

This incident was not preventable because the loose wire occurred despite inspections made during routine maintenance and operator rounds. Remedial Measures - MOUSA is actively working to install redundant solenoids on this critical valve. SEE LDEQ reports # 99867, 9986