Tag Archives: event reports

Event Report: Illinois nuke shuts down after steam valves fail

Yesterday afternoon, operators at the Clinton nuclear power plant in Illinois were ramping down the station’s sole reactor in preparation for refueling. At 16 per cent power, the reactor scrammed on high steam dome pressure after the main steam valves unexpectedly closed. … Continue reading

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Event Report: South Texas nuke shuts down

Reactor 2 at the South Texas Nuclear Project shut down early yesterday morning due to a turbine trip and generator lockout. The unit’s Auxiliary Feedwater system activated following the turbine trip. A steam dump valve failed in the open position … Continue reading

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Event Reports: Bearing failure in Michigan, loss of offsite power in Wisconsin

A couple of items from today’s Nuclear Regulatory Commission Event Reports today: 1. Friday afternoon, operators at the Cook nuclear power plant in Michigan manually started the Unit 1 Auxiliary Feedwater Pumps after one of the pumps suffered a bearing failure. … Continue reading

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Event Reports: Two reactor shutdowns and a case of worker exposure

1. The Unit 1 reactor at the Palo Verde nuclear power plant in Arizona had to be manually shut down on Tuesday night. Operators were conducting Low Power Physics Testing in preparation for restarting the reactor following a refueling outage when … Continue reading

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Update on Minnesota reactor shutdown

Late Saturday, there was an automatic reactor shutdown at the Monticello nuclear power plant in Minnesota, with an accompanying report of high temperatures in the discharge canal. A supplemental Event Report to the NRC this morning says that the temperature … Continue reading

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Update on Connecticut nuke shutdown

When operators at the Millstone nuclear power plant in Connecticut attempted to restart the Unit 3 reactor on Sunday, a loss of condensor vacuum forced a manual shutdown of the unit. London, Connecticut’s The Day reported that there were additional … Continue reading

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Event Reports: Two reactor scrams, a faulty safety system and something missing in spent fuel pool

Four items from this morning’s NRC Event Reports: 1. Late Saturday, operators were performing valve bypass testing on Unit 1 at the Monticello nuclear power plant in Minnesota, when the reactor scrammed and the Reactor Protective System activated on low … 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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Drunk-at-work incident at Virginia nuke

A contractor working as an employee supervisor at the Surry nuclear power plant in Virginia tested positive for alcohol yesterday afternoon, according to an NRC Event Report. The contractor had his badge pulled and his access to the site was … Continue reading

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Event Reports: Worker exposure, medical misadministration, fuel storage problems and fire safety defects

Some items from today’s Nuclear Regulatory Commission’s Event Reports page:  1. The Yaffe Iron and Metal Company reported to the Oklahoma Department of Environmental Quality that the scrap metal yard had discovered an “orphaned radioactive source” in an outgoing shipment … Continue reading

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