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Valero (1238), Meraux

LDEQ Accident Report

Accident #154085
PDF AvailablePDF
State Police #14-00859
Accident Date2014-02-23
Report Date 2014-02-28
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
Flammable Gas1h 2mSouth Flare (EQT 0049, EPN 3-77)NONOYES1,134.0 pounds
Hydrogen Sulfide1h 2mSouth Flare (EQT 0049, EPN 3-77)NONONO1.6 pounds
Hexane1h 2mSouth Flare (EQT 0049, EPN 3-77)NONONO207.1 pounds
Hydrogen1h 2mSouth Flare (EQT 0049, EPN 3-77)NONONO75.3 pounds
Propane1h 2mSouth Flare (EQT 0049, EPN 3-77)NONOYES128.0
Propylene1h 2mSouth Flare (EQT 0049, EPN 3-77)NONOYES83.2 pounds
Isobutane1h 2mSouth Flare (EQT 0049, EPN 3-77)NONOYES120.2 pounds
n-Butane1h 2mSouth Flare (EQT 0049, EPN 3-77)NONONO55.7 pounds
Olefins1h 2mSouth Flare (EQT 0049, EPN 3-77)NONONO19.0 pounds
Isopentane1h 2mSouth Flare (EQT 0049, EPN 3-77)NONOYES37.7 pounds
n-Pentane1h 2mSouth Flare (EQT 0049, EPN 3-77)NONONO21.5 pounds
Carbon Dioxide1h 2mSouth Flare (EQT 0049, EPN 3-77)YESNONO5.9 pounds
Ethylene1h 2mSouth Flare (EQT 0049, EPN 3-77)NONOYES30.3 pounds
Ethane1h 2mSouth Flare (EQT 0049, EPN 3-77)NONOYES108.5 pounds
Nitrogen1h 2mSouth Flare (EQT 0049, EPN 3-77)NONONO7,921.5 pounds
Methane1h 2mSouth Flare (EQT 0049, EPN 3-77)YESNOYES247.0 pounds

Accident Classified As: Reportable Quantity

Cause of Problem: No Information Given

Valero exceeded the reporting threshold for flammable gas emissions at the South Glare due to a loss of flame. Valero had recently shut down a Diesel Hydrotreating Unit and was purging the unit with Nitrogen to the South Flare. The pilot flame sensor alarmed int the Control room and personnel visually inspected the South Flare and discovered that the flame had been extinguished. Valero stopped the Nitrogen flow and attempted to relight the South Flare, but was delayed because electrical power to the ignition system was off. Valero quickly restored electrical power and re-lit the flare. The pilot flame sensor alarmed cleared and visual evidence of a flame was observed.

Discharge Preventable - Under Investigation

Notes/Remedial Actions

Valero stopped the Nitrogen flow and re-lit the South Flare. Valero provided verbal notification within one hour of exceeding the reportable quantity for flammable gas. Valero received no citizen complaints and did not conduct a downwind ambient air monitoring. The incident is under investigation so no specific plan of action has been put into effect to prevent recurrence.