Category Archives: Byron

Event Reports: Reactor scrams in Mississippi, Nebraska and Alabama, loss of offsite power in Illinois, loss of containment in North Carolina and loss of emergency sirens in Louisiana

Several items from Monday, Tuesday and Wednesday’s Event Notification Reports on the Nuclear Regulatory Commission’s website: 1. Early Monday morning, operators at the Grand Gulf nuclear power plant in Mississippi shut down the facility’s sole reactor due to a steam … Continue reading

Posted in Browns Ferry, Brunswick, Byron, Event Reports, Fort Calhoun, Grand Gulf, Nuclear Regulatory Commission, Reactor problems, Waterford | Tagged , , , , , , , , , , , , , , , | 1 Comment

Exelon threatens to close three Illinois nukes unless the state pays them not to

On the surface, it sounds like good news. Crain’s Chicago Business reported today: Company executives and lobbyists have told lawmakers and other interested parties that three of the six nukes Exelon operates (Byron, Clinton and Quad Cities) are at risk … Continue reading

Posted in Byron, Clinton, Exelon, Quad Cities | Tagged , , , , , , | 1 Comment

Record heat reduces nuclear output to 9-year low

Bloomberg Business Week reported yesterday: Nuclear-power production in the U.S. is at the lowest seasonal levels in nine years as drought and heat force reactors from Ohio to Vermont to slow output. Generation for the 104 plants in the U.S. … Continue reading

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

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

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

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

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

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

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