is3_74 - (second barrier), there should be only small...

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Radiological Emergency Management Independent Study Course 3-14 Containment Building Core, Vessel, and Containment Building The third barrier between the fission products and the environment is the containment building. The containment building is the familiar large dome-like structure which may be seen when approaching or passing many nuclear power plants. At some plants, the containment is located within a building which serves as yet another fission product barrier. A containment building generally consists of high density, reinforced concrete as much as 6 feet (1.8 m) thick and is built to withstand not only a severe accident, but also a variety of natural and man-made hazards such as earthquakes, tornadoes, and airplane crashes. Even if the core is severely damaged or melted (first barrier) and the primary cooling system fails
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Unformatted text preview: (second barrier), there should be only small releases to the atmosphere because of the last fission product barrier, the containment. During the accident at Three Mile Island, there was severe core damage and some melting of the core and the primary coolant system did fail but only a small amount of fission products were released because of the effectiveness of the containment. Although all three of these boundaries exist to prevent the inadvertent release of fission products to the environment, like all man-made things, they may fail or partially fail to perform their intended function. The failure of these boundaries may then result in the release of radioactive material to environment....
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This note was uploaded on 01/29/2010 for the course MPA mpa1 taught by Professor Scotts during the Spring '10 term at Acton School of Business.

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