Home | Search | Emissions | Pollutants | About the Database |
Accident # | 106230 |
State Police # | 08-03314 |
Accident Date | 2008-06-06 |
Report Date | 2008-06-13 |
Follow-up Date | 0000-00-00 |
Follow-up: | Yes |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Sulfur Dioxide | 1h 37m | Furnace emmision deviation | NO | YES | NO | 1,255.0 pounds |
Accident Classified As: Reportable Quantity
The hydrogen sulfide analyzer for the NSPS fuel gas system indicated that the hydrogen sulfide levels in the fuel gas system increased. It was not initially known if the analyzer reading was accurate because there was no alarm indication for the operator of any unit malfunction that could have caused the elevated hydrogen sulfide levels. The source of the high hydrogen sulfide was due to a valve misalignment on the T-301 MEA scrubber at the #2 Light Ends Unit. Sour gas was inadvertently lined up through the scrubber, which had been down for repairs, without introducing MEA into the tower. The unscrubbed gas entered the NSPS fuel gas system and caused 33 furnaces in the NSPS system to exceed their maximum permitted limits for sulfur dioxide.
The high hydrogen sulfide stream was blocked away from the scrubber and the hydrogen sulfide level in the NSPS system dropped below the maximum allowable limit.
Connect With Us: