Unformatted text preview: (UO 2 ). Uranium dioxide, a ceramic, is used because like all ceramics, it can withstand very high temperatures. The uranium dioxide is fabricated into cylindrical fuel pellets , approximately one-half inch long. Many fuel pellets are stacked end-to-end to form a fuel rod . Each fuel rod is approximately 12 feet long and is encased in a metal tube called the fuel cladding . The purpose of the cladding is to prevent fission products from escaping from the fuel pellets into the reactor cooling water. Most radioactive fission products remain in the fuel, very close to where they are formed. However, certain fission products such as krypton and xenon gases or iodine atoms are mobile and may move out of the fuel and become trapped in the narrow gaps between the fuel pellets and the fuel cladding. Uranium Fuel Pellet...
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- Spring '10
- Nuclear Fission, Uranium, Plutonium, fission products, Nuclear fuel