Uranium (u235), naturally occurring at 0.7%, must be before it can be put into a reactor. enriched to 3% extensively processed in order to change it to a nonreactive form produced by bombarding it with electrons from radioactive plutonium washed to lower its concentration

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Extensively processed to clean, purify, and concentrate it.

Uranium (U235), naturally occurring at 0.7%, must undergo a series of processes to become a useable fuel before it can be put into a reactor.

The process include converting uranium oxide to uranium hexafluoride allowing it to be enriched to 3%.

After enrichment, the gas is converted to uranium dioxide fuel pellets. These are placed inside thin metal tubes which are assembled in bundles to become the fuel elements for the core of the reactor.