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Marathon Ashland Petroleum (3165), Garyville

LDEQ Accident Report

Accident #148974
PDF AvailablePDF
State Police #13-02421
Accident Date2013-05-31
Report Date 2013-06-05
Follow-up Date 2013-10-23
Follow-up: Yes

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
Propylene2d 8hNorth Stick Flare (EQT 162/EIQ 83-74)NONOYES0.8 pounds
Propane2d 8hNorth Stick Flare (EQT 162/EIQ 83-74)NONOYES0.4 pounds
NOx2d 8hNorth Stick Flare (EQT 162/EIQ 83-74)NONOYES0.1 pounds
Carbon Monoxide2d 8hNorth Stick Flare (EQT 162/EIQ 83-74)NOYESNO0.4 pounds
Volatile Organic Compounds (VOCs)2d 8hNorth Stick Flare (EQT 162/EIQ 83-74)NONOYES1.1 pounds
Particulate Matter 102d 8hNorth Stick Flare (EQT 162/EIQ 83-74)NOYESNO0.0 pounds
Particulate Matter 2.52d 8hNorth Stick Flare (EQT 162/EIQ 83-74)NOYESNO0.0 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs)2d 8hNorth Stick Flare (EQT 162/EIQ 83-74)NONONO0.8 pounds

Accident Classified As: Below Reportable Quantity (BRQ)

Cause of Problem: Equipment Failure

On May 31, 2013, while discharging a propylene tank truck, the operator noticed that the propylene unloading drum was leaking to the North Stick Flare. There were no known offsite impacts.

Discharge Preventable - No

The failure of the bypass valve was not anticipated.

Notes/Remedial Actions

Shutdown the unloading of the tank truck and blocked in the propylene drum to prevent any additional product into the drum. To reduce pressure, the liquid in the drum was pumped down from 50% to 20% and routed to the spheres. Both the truck and rail racks were shutdown. The bypass valve will be replaced An additional followup on 10/23/13 corrected the initial followup report's emissions data regarding greenhouse gas releases.