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Motiva Enterprises (1406), Norco

LDEQ Accident Report

Accident #96958
State Police #07-1938
Accident Date2007-06-10
Report Date 2007-06-10
Follow-up Date 2007-06-15
Follow-up: Yes

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Flammable Gas17mrelief valve at RCCUNONOYES85,445.0 pounds
Volatile Organic Compounds (VOCs)17mrelief valve at RCCUNONOYES85,445.0 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs)NONONO64,091.0

Accident Classified As: Reportable Quantity

Cause of Problem: Equipment Failure

Depropanizer column relief valve (RV-7207) failed at the Residual Catalytic Cracking Unit, prematurely relieving below its set pressure.

Discharge Preventable - No

Not preventable due to the fact that RV-7207 was properly maintained and has met all inspection criteria.

Notes/Remedial Actions

Valve was isolated to stop release, "employed proper mitigation steps for alternate relief protection to prevent further environmental impact," valve removed, sent off for repair and reinstalled. It was noted that there was a noise associated with the RV piping at the time of the release--one complaint received.