Category Archives: Event Reports

Lightning strike knocks out off-site power at Illinois nuke; plant’s two units were on emergency diesel generators overnight

Posted on April 20, 2013 by

The Associated Press reported on Thursday, April 18: The U.S. Nuclear Regulatory Commission says a lightning strike knocked out power to a northern Illinois nuclear plant for several hours Wednesday night, but emergency generators kicked in to keep the site … Continue reading →

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Event Reports: Reactor scrams in Pennsylvania, New York, Texas and New Jersey; excess radiation in Minnesota, a fire in New York, a toxic gas release in Ohio and a drunken supervisor in Florida

Posted on December 1, 2012 by

This post is kind of lengthy, as I haven’t been able to get around to looking at Event Reports for a couple of weeks. Here’s the news: 1. Early in the morning of Friday, November 9, operators at the Susquehanna … Continue reading →

Posted in Comanche Peak, Event Reports, Fire, Fitness for Duty, FitzPatrick, Monticello, Nuclear Regulatory Commission, Perry, Plant shutdowns, Reactor problems, Salem, Susquehanna, Turkey Point, Vogtle | Tagged , , , , , , , , , , , , , , , , , , , | Leave a comment

Event Report: Michigan reactor shut down

Posted on November 8, 2012 by

Yesterday morning, operators at the Fermi nuclear power plant manually shut down the Unit 2 reactor after discovering “hydrogen gas in-leakage into the stator water cooling system from the main turbine generator.” Fermi officials desribed the incident as “uncomplicated” while noting … Continue reading →

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Event Report: More problems at Nine Mile Point

Posted on November 7, 2012 by

Problems continue with the Unit 1 reactor at the Nine Mile Point nuclear plant in New York. The unit had a fire two weeks ago and an automatic reactor shutdown last weekend. Early yesterday morning, a feedwater valve opened unexpectedly. This resulted in … Continue reading →

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Event Report update: Florida Fitness for Duty report

Posted on November 6, 2012 by

Yesterday, I told you that a contract supervisor at the Crystal River nuclear power plant in Florida had failed a for-cause Fitness for Duty screening. I incorrectly assumed that this meant the employee had failed a blood test after showing … Continue reading →

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Event Reports: Plant shutdowns in Michigan and New York and a Fitness for Duty Report from Florida

Posted on November 5, 2012 by

1. Sunday afternoon, operators at the Palisades nuclear plant in Michigan declared a primary coolant loop to be inoperable due to a steam leak. Since the leak could not be investigated with the reactor running, the plant entered a Technical … Continue reading →

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Event Report update: Comanche Peak reactor scrammed

Posted on November 2, 2012 by

Yesterday, I told you that Unit 1 at the Comanche Peak nuclear power plant in north Texas experienced an unexpected activation of the reactor’s emergency systems. Despite the problems, the plant continued to operate the reactor at 100 per cent … Continue reading →

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Event Report: Safety systems switch on unexpectedly at Comanche Peak

Posted on November 1, 2012 by

The Comanche Peak nuclear power plant in North Texas told the Nuclear Regulatory Commission that its Unit 1 reactor had an unexpected activation of two of its emergency systems yesterday afternoon. Plant officials said that the reactor’s Blackout Sequencer faulted, … Continue reading →

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Update on Event Reports: Oyster Creek also lost offsite power

Posted on October 31, 2012 by

I had previously reported that the Nine Mile Point nuclear power plant in New York lost offsite power to one of its reactors during Hurricane Sandy. This morning’s Nuclear Regulatory Commission Event Reports indicate that the same thing happened to … Continue reading →

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Event Reports: Flooding, lost sirens, reactor trips and loss of offsite power at five nuclear power plants during hurricane

Posted on October 30, 2012 by

The Nuclear Regulatory Commission posted a number of Event Reports this moring following last night’s landfall of Hurricane Sandy: 1. The Oyster Creek nuclear power plant, currently shut down for refueling, lost 36 of its 43 emergency sirens during the storm. … Continue reading →

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