Laka Foundation

Publication Laka-library:
The Uranium Enrichment Plant Almelo (1992)

AuthorUrenco Nederland BV
Date1992*
Classification 1.01.8.30/30 (URENCO/UCN ALMELO - GENERAL)
Front

From the publication:

What is Uranium Enrichment?

Uranium is the raw material for nuclear power and thus an important source of 
energy today. Before it can be used for electricity generation in a nuclear power 
plant, however, several processing steps are necessary:

The ore has to be mined and the uranium is extracted and purified at the mine site; 
it is next chemically converted into uranium hexafluoride at conversion plants and 
this is followed by the enrichment process, which takes place in uranium enrichment 
facilities; finally the enriched uranium is manufactured into fuel elements at fuel 
fabrication plants.

Uranium in its natural state contains only 0.7% of the isotope uranium-235 
(U-235), which by fission in a nuclear reactor releases the thermal energy 
necessary for electricity generation. The balance of the uranium comprises the 
isotope U-238, which is not fissionable in a thermal reactor.

For the use in nuclear power plants with light water reactors, 0.7% U-235 is 
insufficient. The concentration of the U-235 isotope in the fuel has to be increased, 
usually into the range 3 - 5 %. The process for doing this is known as uranium 
enrichment.

*) Estimated date

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