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Marathon Ashland Petroleum (3165), Garyville
LDEQ Accident Report
| Accident # | 123579 |
| State Police # | 10-02701 |
| Accident Date | 2010-05-18 |
| Report Date | 2010-05-21 |
| 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 |
| Nitrogen Oxide | 1h 30m | FLARE: Unit 59 North (EQT #0162 EIQ #83-74) & South Flares (EQT #0160 EIQ #69-74) | NO | YES | YES | 135.0 pounds |
| Sulfur Dioxide | 1h 30m | FLARE: Unit 59 North (EQT #0162 EIQ #83-74) & South Flares (EQT #0160 EIQ #69-74) | NO | YES | NO | 0.3 pounds |
| Volatile Organic Compounds (VOCs) | 1h 30m | FLARE: Unit 59 North (EQT #0162 EIQ #83-74) & South Flares (EQT #0160 EIQ #69-74) | NO | NO | YES | 413.0 pounds |
Accident Classified As:
Cause of Problem: Equipment Failure
Refinery letter states that liquid material from the refinery's FCCU carried over into the fuel gas system, causing incomplete combustion in the refinery's process heater and flares.
Discharge Preventable - Under Investigation
Notes/Remedial Actions
The source of the liquid stream was identified and isolated from the fuel gas system. The remaining liquid was drained from the process units' knockout drums. The process heaters were then restarted. Steps to prevent a recurrence of the incident will be taken once the root cause analysis is completed. NOTES: Nitrogen Oxides were released.
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