Major Nuclear Accidents
Category: Other
Updated: 24 Oct 2018
Contributors
Created byOliver Fulton
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Events
Chalk River (Canada):
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 reactorWindscale Pile (UK):
Release of radioactive material to the environment
following a fire in a reactor core.Kyshtym (Russia):
Significant release of radioactive material to the environment from
explosion of a high activity waste tank.Jaslovské Bohunice (Czechoslovakia):
Damaged fuel integrity, extensive corrosion damage of
fuel cladding and release of radioactivity.Three Mile Island (US):
Severe damage to the reactor coreSaint Laurent des Eaux (France):
Melting of one channel of fuel in the reactor with no release outside the siteChernobyl (Ukraine):
Widespread health and environmental effects. External release of a
significant fraction of reactor core inventory.Tomsk (Russia):
Pressure buildup led to an explosive mechanical failureTokaimura (Japan):
Fatal overexposures of workers following a criticality
event at a nuclear facilityFleurus (Belgium):
Severe health effects for a worker at a commercial
irradiation facility as a result of high doses of radiationFukushima (Japan):
Reactor shutdown after the 2011 Sendai earthquake
and tsunami; failure of emergency cooling caused an explosion
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