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Marathon Ashland Petroleum (3165), Garyville

LDEQ Accident Report

Accident #149704
tate Police #N/A
Accident Date2013-07-15
Report Date 2013-07-19
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
Nitrogen Oxide56mUnit 259 North Ground FlareNOYESYES10.1 pounds
Sulfur Dioxide56mUnit 259 North Ground FlareNOYESNO333.7 pounds
Volatile Organic Compounds (VOCs)56mUnit 259 North Ground FlareNONOYES99.7 pounds
Carbon Monoxide56mUnit 259 North Ground FlareNOYESNO56.4 pounds
Particulate Matter 1056mUnit 259 North Ground FlareNOYESNO1.1 pounds
Particulate Matter 2.556mUnit 259 North Ground FlareNOYESNO1.1 pounds
Highly Reactive Volatile Organic Compounds (HRVOCs)56mUnit 259 North Ground FlareNONONO0.0 pounds

Accident Classified As: Below Reportable Quantity (BRQ)

Cause of Problem: Equipment Failure

ON July 15, 2013, an upset in Crude Unit 210 caused the Crude Compressor Suction Drum to vent to the North Ground Flare for approximately one minute. The first incident was due to a crude oil switch causing the Unit 22 Sats Gas Plant Compressor to shutdown on high level. The second incident was due to an upset in the Unit 210 Crude Unit that cause the Unit 210 Crude Compressor Suction Drum to vent to the North Ground Flare.

Discharge Preventable - Under Investigation

Notes/Remedial Actions

Operating personnel made operating changes to the unit to bring it out of upset conditions. October 23, 2013 additional follow-up report corrects emissions data submitted by MPC. MPC erroneously included greenhouse gas (GHG) emissions in the incident calculation. GHGs are not permitted pollutant and are not required to be evaluated for reportable quantities.