The safe processing of uranium ore concentrates into fuel for clean air nuclear power plants is the focus of Cameco’s Fuel Services Division in Ontario, Canada.

Before it can be used to generate electricity, uranium concentrate, or yellowcake as it is commonly referred to, must be further processed. First the uranium concentrate is refined to remove impurities and change its chemical form to uranium trioxide (UO3). This UO3 is then chemically converted into one of two different uranium compounds, uranium dioxide (UO2) or uranium hexafluoride (UF6), depending on the type of reactor to be fuelled. Some of the UO2 is shipped directly to Cameco's fuel manufacturing. In Port Hope and Cobourg, fuel assemblies are constructed for CANDU heavy water reactors. This facility is also a well-known producer of reactor components for reactors around the world. UF6 moves on to enrichment facilities for further processing into fuel for light water nuclear power reactors.

Cameco's fuel services division:

  • operates the largest commercial refinery in the world,
  • controls about 21% of the world UF6 primary conversion capacity, and
  • is a leading manufacturer of fuel assemblies and reactor components for CANDU heavy water reactors.

For more details about the nuclear fuel cycle and uranium processing, visit Uranium 101.

(As of December 31, 2023)
751 employees in Ontario infographic
1930s Uranium-related industry began in Ontario inforgraphic
About 21% of the world's uranium hexafluoride conversion capacity is controlled by Cameco infographic
More than half of Ontario's electricity is generated with Cameco fuel

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