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Marathon Ashland Petroleum (3165), Garyville
LDEQ Accident Report
| Accident # | 127916 |
| State Police # | 11-00311 |
| Accident Date | 2010-11-29 |
| Report Date | 2010-12-02 |
| 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 |
| Volatile Organic Compounds (VOCs) | 5m | FLARE: Unit 59 South Flare | NO | NO | YES | 85.7 pounds |
| Hydrogen Sulfide | 5m | FLARE: Unit 59 South Flare | NO | NO | NO | 8.2 pounds |
| Sulfur Dioxide | 5m | FLARE: Unit 59 South Flare | NO | YES | NO | 752.8 pounds |
Accident Classified As:
Cause of Problem: Process Upset
Refinery letter states that an unexpected change in the feed composition caused an over-pressurization of the high pressure stripper column. This resulted in the opening of the process safety valve to relieve pressure within the column. FLARE.
Discharge Preventable - Under Investigation
Notes/Remedial Actions
RQ. Reportable quantities for sulfur dioxide were exceeded. Changes were made in Unit 15 to compensate for the increase in pressure in the high pressure column.
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