Tag Archives: Exelon

Small victories are certainly better than big defeats; Exelon cancels plans to build new reactors at South Texas site

Posted on August 30, 2012 by

The site pictured above will remain as is for awhile, as Exelon announced this week that it was withdrawing its site application for two new reactors near Victoria, Texas. As the World Nuclear News reported yesterday: Exelon has completely stopped … Continue reading →

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Update: Limerick shutdown resulted in Technical Support System ventilation problems

Posted on April 20, 2012 by

Yesterday, operators at the Limerick nuclear power plant scrammed the Unit 1 reactor after an electrical problem knocked out the main generator recirculating water pumps. Today, plant owner Exelon filed an Event Report with the Nuclear Regulatory Commission that revealed … Continue reading →

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Pennsylvania nuclear reactor shut down after losing power to main generator cooling pumps‏

Posted on April 19, 2012 by

Exelon announced that Unit 1 at the Limerick nuclear power plant was shut down earlier today after losing power to the main generator cooling pumps. There are not a lot of additional details available at this hour, and most of … Continue reading →

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Former Exelon CEO says new nukes don’t make economic sense

Posted on March 29, 2012 by

Jeff McMahon just blogged this on Forbes: Nuclear power is no longer an economically viable source of new energy in the United States, the freshly-retired CEO of Exelon, America’s largest producer of nuclear power, said in Chicago Thursday. And it … Continue reading →

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Event Reports: Illinois reactor suffers another loss of offsite power incident

Posted on February 29, 2012 by

Yesterday afternoon, operators at the Byron nuclear power plant in Illinois declared an Unusual Event due to a malfunction in the switchyard that caused the Unit 2 reactor to lose offsite power. Emergency diesel generators started following the incident, and … Continue reading →

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Event Report: Operators scram Illinois nuke following turbine trip

Posted on February 8, 2012 by

The Unit 2 reactor at the Byron nuclear power plant in Illinois has been shut down since January 31, following a loss of offsite power incident. On Monday of this week, repairs had been completed, and operators were attempting to … Continue reading →

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Event Report: Minnesota nuke leaked condensate containing tritium following pump failure

Posted on February 7, 2012 by

Yesterday afternoon, a condensate return pump failed at the Prairie Island nuclear power plant in Minnesota, releasing 27 gallons water. Prairie Island released an unusually detailed report of what the water contained: “The release contained the following chemicals: 1) 11.2 … Continue reading →

Posted in Coolant leak, Event Reports, Exelon, Nuclear Regulatory Commission, Prairie Island, Radiation leak | Tagged , , , , , | Leave a comment

Update: Offsite power restored at Illinois nuke, and NRC begins investigation

Posted on February 1, 2012 by

The Byron nuclear power plant notified the Nuclear Regulatory Commission that it had restored offsite power to its Unit 2 reactor as of 10 pm yesterday. This means that the reactor was running on power supplied by emergency diesel generators … Continue reading →

Posted in Byron, Electrical problems, Event Reports, Exelon, Loss of offsite power, Nuclear Regulatory Commission, Plant shutdowns, Radiation leak, Reactor problems | Tagged , , , , , | Leave a comment

Event Report: Update on loss of power incident at Illinois nuke

Posted on January 31, 2012 by

Today’s NRC Event Reports include the incident yesterday morning at the Byron Unit 2 reactor in Illinois. There are three significant updates.   First, the reactor is still operating on power supplied by the unit’s emergency diesel generators. So, at … Continue reading →

Posted in Byron, Electrical problems, Event Reports, Exelon, Loss of offsite power, Nuclear Regulatory Commission, Plant shutdowns, Radiation leak, tritium | Tagged , , , , , , , | Leave a comment

Illinois nuke shuts down after loss of power incident

Posted on January 30, 2012 by

 The Chicago Tribune reported this afternoon: U.S. power company Exelon’s 1,136-megawatt Unit 2 at the Byron nuclear power plant in Illinois shut Monday morning, a spokeswoman at the U.S. Nuclear Regulatory Commission (NRC) said. Exelon declared an unusual event due … Continue reading →

Posted in Byron, Event Reports, Exelon, Loss of offsite power, Nuclear Regulatory Commission, Plant shutdowns, Radiation leak, Reactor problems | Tagged , , , , , , | 3 Comments