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Accident # | 79261 |
State Police # | 05-03357 |
Accident Date | 2005-05-22 |
Report Date | 2005-05-27 |
Follow-up Date | 0000-00-00 |
Follow-up: | Yes |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Hydrogen Sulfide | 0 h 30 m | Thermal Oxidizer Cap (no EPN) | NO | NO | NO | 0.2 pounds |
Accident Classified As:
A local pressure controller in Unit 19 (Amine/Sour Water Stripper) closed due to high pressure and stopped amine flow to the Regenerator. Amine pump to Unit 15 (Heavy Gas Oil Hydrotreater) was tripped and the Unit 45 Sulfur Plant shut down due to the low amine acid flow. The sulfur plants all went off-ratio and began smoking 2 of the 3 Thermal Oxidizers , exceeding the opacity limit. The Unit 45 Sulfur Plant's Thermal Oxidizer then went below 900 F for app. 9 m which led to excess emissions of Hydrogen Sulfide.
Under Investigation
An Air Monitoring Team was dispatched and no off-site impacts were found. Operations worked to get the Sulfur Plants back on ratio and minimized emissions. The incident is under investigation.
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