Tag Archives: Ohio

Event Report: Ohio nuclear plants loses safety display system for seven hours due to hard drive failure

On Thursday afternoon, the Davis-Besse nuclear power plant in Ohio lost its Safety Parameter Display System (SPDS) during a failure of the plant’s hard drive. According to the Event Report submitted to the NRC, data from the SPDS “was not … Continue reading

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Ohio nuke to remain closed pending investigation of cracks in containment structure

  The Nuclear Regulatory Commission (NRC) said this week that the Davis-Besse nuclear power plant in Ohio would not be allowed to restart its single reactor until the agency has a chance to complete its investigation of hairline cracks in the … Continue reading

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Event Reports: Fire in Ohio, coolant leak in South Carolina

Two items from this morning’s NRC Event Reports: 1. Early this morning, the Davis-Besse nuclear plant in Ohio declared an alert after a fire was detected in an auxiliary building housing safety related equipment. The apparent cause of the fire was water … Continue reading

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Cracked concrete found in Davis-Besse containment structure

Last week, operators at the Davis-Besse nuclear plant in Ohio were preparing to install a new reactor head at the plant. As part of the repair, a 10 foot hole was cut through the concrete containment building. During the procedure, … Continue reading

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Event Reports: Reactor shutdown, bad welds and overlooked Fitness for Duty tests

It’s Monday morning, and the Nuclear Regulatory Commission website has a slew of Event Reports from the weekend: 1. As I previously posted, Monticello nuclear in Minnesota developed a problem over the weekend. The reactor shut itself down automatically on … Continue reading

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Diesel generator parts defect raises a number of questions‏

Browsing the NRC Event Reports page this morning, I found an item about refurbished parts for emergency diesel generators. Engine Systems, Inc. (ESI) in Rocky Mount, North Carlina, issued a final report on a problem encountered at the Perry nuclear … Continue reading

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Two reactors ramping down following discovery of maintenance issues

A reactor in Ohio and one in New York are reducing power while addressing maintenance problems, according to this morning’s NRC Event Reports. Operators at Perry nuclear in Ohio say that the startup transformer in the Unit 1 reactor failed … Continue reading

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