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Marathon Ashland Petroleum (3165), Garyville
LDEQ Accident Report
| Accident # | 115720 |
| State Police # | 091845 |
| Accident Date | 2009-06-16 |
| Report Date | 2009-06-23 |
| Follow-up Date | 2009-09-25 |
| Follow-up: | Yes |
Pollutants Released
| Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
| Ethylene | 90 minutes | exchanger 05-1313 | NO | NO | YES | 0.1 pounds |
| Propane | 90 minutes | exchanger 05-1313 | NO | NO | YES | 5.3 pounds |
| Propylene | 90 minutes | exchanger 05-1313 | NO | NO | YES | 2.8 pounds |
| Isobutane | 90 minutes | exchanger 05-1313 | NO | NO | YES | 0.7 pounds |
| n-Butane | 90 minutes | exchanger 05-1313 | NO | NO | NO | 4.2 pounds |
| 1-Butene | 90 minutes | exchanger 05-1313 | NO | NO | YES | 3.6 pounds |
| 1-Pentene | 90 minutes | exchanger 05-1313 | NO | NO | YES | 2.5 pounds |
| n-Pentane | 90 minutes | exchanger 05-1313 | NO | NO | NO | 9.1 pounds |
| Pentene | 90 minutes | exchanger 05-1313 | NO | NO | NO | 65.3 pounds |
| Hexane | 90 minutes | exchanger 05-1313 | NO | NO | NO | 68.4 pounds |
| Hydrogen Sulfide | 90 minutes | exchanger 05-1313 | NO | NO | NO | 0.1 pounds |
Accident Classified As:
Cause of Problem: Equipment Failure
Pinhole leak from exchanger, 05-1313, caused a release of naphtha to the coker unit pad.
Discharge Preventable - No
the exchanger release was as unforeseeable failure.
Notes/Remedial Actions
the exchanger was isolated, and contents were directed to the oily water sewer.
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