Fuel assembly

Nuclear Energy

Bundle of fuel rods.

A fuel assembly is a structured bundle of fuel rods with spacers, allowing coolant flow and handling as a unit during refuelling.

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There are different types of nuclear fuel. A typical fuel assembly for PWR consists of fuel rods, long cylinders of zircaloy filled with UO2 pellets.

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Ceramic cylinder of uranium dioxide.

Metal tube around nuclear fuel pellets.