At least 31 people died during the accident and an estimated thousands have died since. 4 reactor, which exposed large areas of Europe to radiation as it drifted across the continent. April 1986 The world's worst nuclear disaster occurred at Ukraine's Chernobyl No. ApOfficials said around 45 workers were exposed to radioactivity during repairs to a plant at Tsuruga, Japan. FebruEight workers are contaminated when more than 100,000 gallons of radioactive coolant fluid leaks into the contaminant building of the Tennessee Valley Authority's Sequoyah 1 plant in Tennessee. Almost 150,000 people were evacuated after the accident, which was attributed to human error and mechanical failure. March 1979 The worst nuclear accident in the United States occurred when a small amount of radiation was released from a partial meltdown at the Three Mile Island nuclear power plant near Harrisburg, Pa.
Some news reports said there was almost a meltdown of the reactor core. DecemAt the Lubmin nuclear power complex on the Baltic coast in the former East Germany, a short-circuit caused by an electrician's mistake started a fire. JanuA coolant malfunction from an experimental underground reactor at Lucens Vad, Switzerland, releases a large amount of radiation into a cave, which was then sealed. OctoThe core of an experimental reactor near Detroit, Mich., melted partially when a sodium cooling system failed. A pipe in the control system of one of the two reactors had ruptured. JThe captain and seven crew members died when radiation spread through the Soviet Union's first nuclear-powered submarine. plant in Idaho Falls in an accident at an experimental reactor. A Russian scientist who first reported the disaster estimated that hundreds died from radiation sickness. Winter 1957-'58 A serious accident occurred during the winter of 1957-58 near the town of Kyshtym in the Urals.
An official report said the leaked radiation could have caused dozens of cancer deaths in the vicinity of Liverpool. October 1957 Fire destroyed the core of a plutonium-producing reactor at Britain's Windscale nuclear complex - since renamed Sellafield - sending clouds of radioactivity into the atmosphere. Although millions of gallons of radioactive water poured into the reactor, there were no injuries. DecemA partial meltdown of a reactor's uranium core at the Chalk River plant near Ottawa, Canada, resulted after the accidental removal of four control rods.
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