Category Archives: Reactor problems

Ohio reactor shuts itself down after losing power to cooling water pumps

Yesterday morning, Ohio’s Perry nuclear power plant shut down automatically after a voltage problem rendered the reactor’s cooling water pumps inoperable. As the Cleveland Plain Dealer reported yesterday: An engineering team’s preliminary investigation released early this afternoon determined that a … Continue reading

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Event Reports: Seven reactors shut down in just eight days

Sorry to have been silent for a while, but I got a new job that’s keeping me pretty busy. But this last two weeks have been busy at the nation’s nuclear power plants. These are just the reactor shutdowns: 1. … Continue reading

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Event Report: Browns Ferry shut down by power surge in generator

The Browns Ferry nuclear power plant in Alabama experienced an automatic reactor scram yesterday afternoon after a generator overvoltage caused a turbine trip, taking Unit 1 out of service. The Main Steam Isolation Valves opened to control reactor pressure. The … Continue reading

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Event Report: Both diesel generators for reactor 2 at Diablo Canyon declared inoperable

A problem with the reactor’s emergency diesel generators (EDG) has shut down Unit 2 at the Diablo Canyon nuclear power plant in California. According to the Event Report filed with the Nuclear Regulatory Commission this morning, an inspection revealed a … Continue reading

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Breaking news: Indian Point 3 shut down by false pressure signal

New York’s Journal News reported in the last half hour: A safety system sent a false signal Wednesday and automatically shut down the Indian Point nuclear power plant’s Unit 3, plant officials said. The system had incorrectly registered a change … Continue reading

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Evnet Reports: Turkey Point scrammed, and Brunswick declares an Unusual Event following halon release

Two items from today’s Event Notification Report page on the Nuclear Regulatory Commission’s website: 1. Yesterday morning, operators at Florida’s Turkey Point nuclear power plant initiated a scram, or rapid shutdown, of the Unit 3 reactor following a loss of … Continue reading

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Event Report: Illinois nuke scrams after emergency system activates

Exelon’s LaSalle nuclear power plant informed the NRC that yesterday afternoon, the Illinois plant’s Unit 2 reactor scrammed, that is, shut itself down automatically, following an unexpected activation of the Reactor Protection System. According to the report on today’s Nuclear … Continue reading

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