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Marathon Ashland Petroleum (3165), Garyville

LDEQ Accident Report

Accident #78037
State Police #05-02202
Accident Date2005-04-05
Report Date 2005-04-11
Follow-up Date 0000-00-00
Follow-up: Yes

Pollutants Released

Pollutant Duration Point Source Greenhouse Gas Criteria Pollutant Ozone forming chemical Amount of Release
C31 h 17 mNorth Flare (EIQ No. 83-74)NONONO10.2 pounds
C3=1 h 17 mNorth Flare (EIQ No. 83-74)NONONO32.5 pounds
iC41 h 17 mNorth Flare (EIQ No. 83-74)NONOYES28.9 pounds
nC41 h 17 mNorth Flare (EIQ No. 83-74)NONOYES7.1 pounds
isoC4=1 h 17 mNorth Flare (EIQ No. 83-74)NONONO12.6 pounds
1-C4=1 h 17 mNorth Flare (EIQ No. 83-74)NONONO10.9 pounds
t-C4=1 h 17 mNorth Flare (EIQ No. 83-74)NONONO12.2 pounds
c-C4=1 h 17 mNorth Flare (EIQ No. 83-74)NONONO8.4 pounds

Accident Classified As:

Cause of Problem: Human Factors

The Unit 42 boiler was inadvertently tripped, along with the air compressor, which caused an upset condition at the Unit 26-FCCU. During start-up of the unit, the Debutanizer overpressurized and vented to the North Flare.

Discharge Preventable - Yes

Notes/Remedial Actions

"Operations personnel took all actions possible to minimize emissions."