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Accident # | 121169 |
State Police # | 10-00596 |
Accident Date | 2010-01-30 |
Report Date | 2010-02-03 |
Follow-up Date | 0000-00-00 |
Follow-up: | No |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Hydrogen | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | NO | 0.0 pounds |
Carbon Dioxide | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | YES | NO | NO | 301.1 pounds |
Nitrogen | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | NO | 69.1 pounds |
Oxygen | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | NO | 10.3 pounds |
Methane | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | YES | NO | YES | 0.5 pounds |
Ethylene | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | YES | 0.5 pounds |
Ethane | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | YES | 1.6 pounds |
Propane | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | YES | 10.6 pounds |
Propylene | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | YES | 1.0 pounds |
Isobutane | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | YES | 7.0 pounds |
n-Butane | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | NO | 27.2 pounds |
1-Butene | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | YES | 0.4 pounds |
Isobutane | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | YES | 0.4 pounds |
Butene | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | YES | 0.4 pounds |
Butene | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | YES | 0.4 pounds |
Pentane | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | YES | 12.0 pounds |
n-Pentane | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | NO | 15.4 pounds |
Pentene | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | NO | 9.2 pounds |
Hydrogen Sulfide | 5m | Unit 34 Sulfur Recovery Unit (EQT FUG037) | NO | NO | NO | 829.1 pounds |
Accident Classified As:
"While switching unit 34 tailgas from the Unity 34 Thermal Oxidizer to the Unit 20 Thermal Oxidizer, Unit 34 pressured up causing acid gas to back out of the low range air blower vent valve in Unity 34." Reportable quantity for Hydrogen Sulfide exceeded.
LDEQ report says not preventable, earlier report from Marathon says under investigation.
RQ. Reportable quantities were exceeded during this incident; detailed emissions report included. Refinery report states that "tailgas [was] switched back to the Unit 34 Thermal Oxidizer which corrected the problem immediately."
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