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Valero (26003), Norco

LDEQ Accident Report

Accident #78141
State Police #05-02311
Accident Date2005-04-10
Report Date 2005-04-15
Follow-up Date 0000-00-00
Follow-up: 

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Sulfur Dioxide4 h 20 mFlare 1 EIQ 15-77NOYESNO11,033.0 pounds
Carbon Monoxide4 h 20 mFlare 1 EIQ 15-77NOYESNO1,378.8 pounds
Nitrous Oxide4 h 20 mFlare 1 EIQ 15-77YESYESYES253.4 pounds
Particulate Matter4 h 20 mFlare 1 EIQ 15-77NOYESNO8.1 pounds
Volatile Organic Compounds (VOCs)4 h 20 mFlare 1 EIQ 15-77NONOYES521.6 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: Process Upset

Compressor tripped due to low lube oil differntial pressure on the 2nd stage of the compressor. Root cause investigation not complete at the time

Discharge Preventable -

Notes/Remedial Actions

Total pounds emitted from both flares. Remedial actions of reducing feed rate and reducing the reaction temperature so that the offgas to the flare can be reduced. No procedures or preventive measures identified at that time.