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Accident # | 100933 |
State Police # | 07-06857 |
Accident Date | 2007-11-09 |
Report Date | 2007-11-15 |
Follow-up Date | 0000-00-00 |
Follow-up: | No |
Pollutant | Duration | Point Source | Greenhouse Gas | Criteria Pollutant | Ozone forming chemical | Amount of Release |
Carbon Monoxide | 2h 32m | 301-D-3 FCC Regenerator Flue Gas Bypass Stack | NO | YES | NO | 21,192.0 pounds |
Accident Classified As:
A portion of the process control system for the Fluidized Catalytic Cracking Unit was taken offline to perform software maintenance. At the time of reactivation, the control system malfunctioned causing the High Integrity Pressure Protection System to activate and shut down the FCC Unit via computer software control. During shutdown, the FCC regernator flue gas is diverted to the bypass stack.
The FCC Unit was brought into safe condition and to allow evaluation of the control system before re-commissioning the unit.
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