Unit 3 Nuclear Power Plant Accidents3-15The History of Nuclear AccidentsNuclear accidents occasionally occur, making people more concerned about the safety of nuclear powerplants. Now that we have learned about the defense-in-depth measures taken in the design of nuclear powerplants, we can examine some of the past nuclear power plant accidents. The most well-known nuclearpower plant accidents occurred at Three Mile Island and Chernobyl. Both of these accidents involved therelease of radioactive material and initiated radiological emergency management efforts. Not every accidentat such plants results in public radiation exposure. Even serious accidents could occur without publicexposure. Examples of some nuclear accidents which have occurred at nuclear power plants and othernuclear facilities include:OWindscale, England (October 7, 1957). A fire at this plutonium production plant released significantamounts of radioactive material. Radioactive iodine contaminated nearby grazing land. Two million
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Nuclear power plant, Three Mile Island accident, Chernobyl disaster, radioactive material, Power Plant Accidents