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Marathon Ashland Petroleum (3165), Garyville
LDEQ Accident Report
| Accident # | 153395 |
| State Police # | 14-00274 |
| Accident Date | 2014-01-16 |
| Report Date | 2014-01-22 |
| 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 |
| Nitrous Oxide | 39m | Unit 212 platformer, reactor 2 outlet flange | YES | YES | YES | 0.7 pounds |
| Carbon Monoxide | 39m | Unit 212 platformer, reactor 2 outlet flange | NO | YES | NO | 3.7 pounds |
| Volatile Organic Compounds (VOCs) | 39m | Unit 212 platformer, reactor 2 outlet flange | NO | NO | YES | 0.0 pounds |
| Particulate Matter 10 | 39m | Unit 212 platformer, reactor 2 outlet flange | NO | YES | NO | 0.1 pounds |
| Particulate Matter 2.5 | 39m | Unit 212 platformer, reactor 2 outlet flange | NO | YES | NO | 0.1 pounds |
Accident Classified As: Below Reportable Quantity (BRQ)
Cause of Problem: Seal or Gasket
On January 16, 2014, at 02:58 hours during the Unit 212 Platformer shutdown procedure, an H2 leak developed from the Reactor 2 Outlet flange during the H2 sweep cooldown step, which resulted in a flange fire.
Discharge Preventable - Under Investigation
An incident investigation will be completed to determine the cause of this event.
Notes/Remedial Actions
Steam was applied to the flange to extinguish the flame and the flange was hot bolted to secure the leak. The reactor circuit was depressured to the south ground flare, which took approximately 30 minutes.
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