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What is nuclear fuel made of?

Updated: 9/16/2023
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13y ago

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A fuel rod is a metal tube (zirconium alloy) that contains fuel pellets in bundles (stacks). Fuel pellets vary in composition, but most consist of uranium and/or plutonium in some form. One type is uranium dioxide powder that has been compressed and heated to form a ceramic. Zirconium is used as a container because it has low neutron absorption, and allows the neutron radiation being produced by the fuel to escape into the surrounding reactor core so it can do its work of heating water to make steam that drives the power plant turbines.

The size of a fuel rod depends on the type of fuel and the application. A CANDU fuel rod, for example, may be 50 cm long and 10 cm in diameter.

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Q: What is nuclear fuel made of?
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