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The 1979 Three Mile Island accident in Pennsylvania was caused by a series of failures in secondary systems at the reactor, which allowed radioactive steam to escape and resulted in the partial core meltdown of one of two reactors at the site, making it the most significant accident in U.S. history.
Soviet submarine K-19 reactor accident 1961, July 4 More than 30 people were over-exposed to radiation when the starboard reactor cooling system failed and the reactor temp rose uncontrollably. Emergency repairs ordered by the captain successfully cooled the reactor and avoided meltdown, but exposed the workers to high levels of radiation. [17] 8
To combat accidents associated with aging nuclear power plants, it may be advantageous to build new nuclear power reactors and retire the old nuclear plants. In the United States alone, more than 50 start-up companies are working to create innovative designs for nuclear power plants [ 153 ] while ensuring the plants are more affordable and cost ...
Nuclear reactors line the riverbank at the Hanford Site along the Columbia River in January 1960. This image of the core from the SL-1 disaster, Idaho Falls, Idaho, USA , served as a reminder of the necessity for proper reactor practice and safeguards.
Nuclear reactor accidents continued into the 1960s with a small test reactor exploding at the Stationary Low-Power Reactor Number One in Idaho Falls in January 1961 resulting in three deaths which were the first fatalities in the history of U.S. nuclear reactor operations. [6]
Date Location Type Description June 23, 1942 Leipzig, Nazi Germany: Steam explosion and reactor fire Leipzig L-IV experiment accident: Shortly after the Leipzig L-IV atomic pile – worked on by Werner Heisenberg and Robert Doepel – demonstrated Germany's first signs of neutron propagation, the device was checked for a possible heavy water leak.
The Soviet icebreaker Lenin [citation needed], the USSR's first nuclear-powered surface ship, suffered a major accident (possibly a nuclear meltdown – exactly what happened remains a matter of controversy in the West) in one of its three reactors. To find the leak the crew broke through the concrete and steel radiation shield with ...
The Three Mile Island accident was a partial nuclear meltdown of the Unit 2 reactor (TMI-2) of the Three Mile Island Nuclear Generating Station. It happened on the Susquehanna River in Londonderry Township , near Harrisburg, Pennsylvania .