Donald C. Cook Nuclear Generating Station - Incidents

Incidents

  • July 13, 1990 one person was killed by electrocution and three others suffered severe burn injuries from a 4kv switchgear explosion.
  • In 1976 two workers were killed in a recirculation pit (sump) by asphyxiation from argon inerting gas used to support welding on stainless steel piping.
  • A transformer caused an automatic shutdown of Unit 1 in 2003.
  • A massive intrusion of fish caused both units to shut down for approximately 25 hours on April 24–25, 2003.
  • On September 20, 2008 unit 1's main turbine and generator were damaged by severe turbine vibrations caused by broken low-pressure turbine blades. A fire also broke out in the generator of Unit 1. No radiation was released and Unit 2 continued to operate at full power

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