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<title>Nuclear power station accidents - Google Fusion Tables</title>
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<h2><b>Incident:</b> Fukushima</h2><br>
<h2><b>INES level:</b> 5</h2><br>
<b>Year:</b> 2011<br>
<b>Description:</b> Reactor shutdown after the 2011 Sendai earthquake and tsunami; failure of emergency cooling caused an explosion<br>
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<h2><b>Incident:</b> Onagawa</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 2011<br>
<b>Description:</b> Reactor shutdown after the 2011 Sendai earthquake and tsunami caused a fire<br>
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<h2><b>Incident:</b> Fleurus</h2><br>
<h2><b>INES level:</b> 4</h2><br>
<b>Year:</b> 2006<br>
<b>Description:</b> Severe health effects for a worker at a commercial irradiation facility as a result of high doses of radiation<br>
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<h2><b>Incident:</b> Forsmark</h2><br>
<h2><b>INES level:</b> 2</h2><br>
<b>Year:</b> 2006<br>
<b>Description:</b> Degraded safety functions for common cause failure in the emergency power supply system at nuclear power plant<br>
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<h2><b>Incident:</b> Erwin</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 2006<br>
<b>Description:</b> Thirty-five litres of a highly enriched uranium solution leaked during transfer<br>
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<h2><b>Incident:</b> Sellafield</h2><br>
<h2><b>INES level:</b> 3</h2><br>
<b>Year:</b> 2005<br>
<b>Description:</b> Release of large quantity of radioactive material, contained within the installation<br>
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<h2><b>Incident:</b> Atucha</h2><br>
<h2><b>INES level:</b> 2</h2><br>
<b>Year:</b> 2005<br>
<b>Description:</b> Overexposure of a worker at a power reactor exceeding the annual limit<br>
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<h2><b>Incident:</b> Braidwood</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 2005<br>
<b>Description:</b> Nuclear material leak<br>
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<h2><b>Incident:</b> Paks</h2><br>
<h2><b>INES level:</b> 3</h2><br>
<b>Year:</b> 2003<br>
<b>Description:</b> Partially spent fuel rods undergoing cleaning in a tank of heavy water ruptured and spilled fuel pellets<br>
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<h2><b>Incident:</b> Tokaimura</h2><br>
<h2><b>INES level:</b> 4</h2><br>
<b>Year:</b> 1999<br>
<b>Description:</b> Fatal overexposures of workers following a criticality event at a nuclear facility<br>
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<h2><b>Incident:</b> Yanangio</h2><br>
<h2><b>INES level:</b> 3</h2><br>
<b>Year:</b> 1999<br>
<b>Description:</b> Incident with radiography source resulting in severe radiation burns<br>
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<h2><b>Incident:</b> Ikitelli</h2><br>
<h2><b>INES level:</b> 3</h2><br>
<b>Year:</b> 1999<br>
<b>Description:</b> Loss of a highly radioactive Co-60 source<br>
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<h2><b>Incident:</b> Ishikawa</h2><br>
<h2><b>INES level:</b> 2</h2><br>
<b>Year:</b> 1999<br>
<b>Description:</b> Control rod malfunction<br>
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<h2><b>Incident:</b> Tomsk</h2><br>
<h2><b>INES level:</b> 4</h2><br>
<b>Year:</b> 1993<br>
<b>Description:</b> Pressure buildup led to an explosive mechanical failure<br>
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<h2><b>Incident:</b> Cadarache</h2><br>
<h2><b>INES level:</b> 2</h2><br>
<b>Year:</b> 1993<br>
<b>Description:</b> Spread of contamination to an area not expected by design<br>
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<h2><b>Incident:</b> Vandellos</h2><br>
<h2><b>INES level:</b> 3</h2><br>
<b>Year:</b> 1989<br>
<b>Description:</b> Near accident caused by fire resulting in loss of safety systems at the nuclear power station<br>
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<h2><b>Incident:</b> Greifswald</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 1989<br>
<b>Description:</b> Excessive heating which damaged ten fuel rods<br>
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<h2><b>Incident:</b> Goilnia</h2><br>
<h2><b>INES level:</b> 5</h2><br>
<b>Year:</b> 1987<br>
<b>Description:</b> Four people died and six received doses of a few Gy from an abandoned and ruptured highly radioactive Cs-137 source<br>
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<h2><b>Incident:</b> Chernobyl</h2><br>
<h2><b>INES level:</b> 7</h2><br>
<b>Year:</b> 1986<br>
<b>Description:</b> Widespread health and environmental effects. External release of a significant fraction of reactor core inventory<br>
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<h2><b>Incident:</b> Hamm-Uentrop</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 1986<br>
<b>Description:</b> Spherical fuel pebble became lodged in the pipe used to deliver fuel elements to the reactor<br>
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<h2><b>Incident:</b> Tsuraga</h2><br>
<h2><b>INES level:</b> 2</h2><br>
<b>Year:</b> 1981<br>
<b>Description:</b> More than 100 workers were exposed to doses of up to 155 millirem per day radiation<br>
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<h2><b>Incident:</b> Saint Laurent des Eaux</h2><br>
<h2><b>INES level:</b> 4</h2><br>
<b>Year:</b> 1980<br>
<b>Description:</b> Melting of one channel of fuel in the reactor with no release outside the site<br>
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<h2><b>Incident:</b> Three Mile Island</h2><br>
<h2><b>INES level:</b> 5</h2><br>
<b>Year:</b> 1979<br>
<b>Description:</b> Severe damage to the reactor core<br>
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<h2><b>Incident:</b> Jaslovsk Bohunice</h2><br>
<h2><b>INES level:</b> 4</h2><br>
<b>Year:</b> 1977<br>
<b>Description:</b> Damaged fuel integrity, extensive corrosion damage of fuel cladding and release of radioactivity<br>
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<h2><b>Incident:</b> Chapelcross</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 1967<br>
<b>Description:</b> Graphite debris partially blocked a fuel channel causing a fuel element to melt and catch fire<br>
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<h2><b>Incident:</b> Monroe</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 1966<br>
<b>Description:</b> Sodium cooling system malfunction<br>
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<h2><b>Incident:</b> Charlestown</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 1964<br>
<b>Description:</b> Error by a worker at a United Nuclear Corporation fuel facility led to an accidental criticality<br>
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<h2><b>Incident:</b> Santa Susana Field Laboratory</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 1959<br>
<b>Description:</b> Partial core meltdown<br>
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<h2><b>Incident:</b> Chalk River</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 1958<br>
<b>Description:</b> Due to inadequate cooling a damaged uranium fuel rod caught fire and was torn in two<br>
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<h2><b>Incident:</b> Vinca</h2><br>
<h2><b>INES level:</b> </h2><br>
<b>Year:</b> 1958<br>
<b>Description:</b> During a subcritical counting experiment a power buildup went undetected - six scientists received high doses<br>
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<h2><b>Incident:</b> Kyshtym</h2><br>
<h2><b>INES level:</b> 6</h2><br>
<b>Year:</b> 1957<br>
<b>Description:</b> Significant release of radioactive material to the environment from explosion of a high activity waste tank.<br>
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<h2><b>Incident:</b> Windscale Pile</h2><br>
<h2><b>INES level:</b> 5</h2><br>
<b>Year:</b> 1957<br>
<b>Description:</b> Release of radioactive material to the environment following a fire in a reactor core<br>
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<h2><b>Incident:</b> Chalk River</h2><br>
<h2><b>INES level:</b> 5</h2><br>
<b>Year:</b> 1952<br>
<b>Description:</b> A reactor shutoff rod failure, combined with several operator errors, led to a major power excursion of more than double the reactor's rated output at AECL's NRX reactor<br>
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