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4. Nuclear measurements under development
4.1 Online measurement of low U or Pu concentrations using X-ray fluorescenceL
The measurement principle is exactly the same as that described in paragraph 3.32 for sample measurement. Here, the sample holder supporting the crucible is replaced by a measuring cell through which the solution to be analyzed flows (figure 24 ).
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Nuclear measurements under development
Economic data
Only three nations are currently engaged in the implementation of reprocessing and associated MOX:
In France, Cogema operates two commercial light-water fuel reprocessing plants, UP3 and UP2 800, with a unit capacity of 800 t/year, at La Hague, and a natural uranium fuel reprocessing plant at Marcoule, which will cease production at the end of 1997;
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