Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique

Compagnie Generale Des Matieres Nucleaires

Areva Nc

Francois Drain

Pascal Baron

Binh Dinh

Michel Masson

Jean Luc Emin

Philippe Pradel

Jean-Luc Emin

A method for treating spent nuclear fuel, which includes first decontaminating the uranium, plutonium and neptunium found in a nitric aqueous phase resulting from dissolving the nuclear fuel in HNO. The uranium, plutonium and neptunium found in the solvent phase is then split in a first aqueous phase and a second aqueous phase. Next, the first aqueous phase is stored. Following, the plutonium or other mixtures found in the first aqueous phase is purified relative to the fission products still found in said phase, in order to obtain, at the end of said purification, an aqueous solution containing a mixture of Pu and U or Pu, U and Np. Finally the resulting mixture of Pu and U or the mixture of Pu, U and Np is co-converted into a mixed oxide.

Method for treating spent nuclear fuel

The invention relates to a process for reprocessing a spent nuclear fuel and for preparing a mixed uranium-plutonium oxide, which process comprises: Applications: reprocessing of nuclear fuels based on uranium oxide or on mixed uranium-plutonium oxide.

Process for reprocessing a spent nuclear fuel and of preparing a mixed uranium-plutonium oxide

Growing community of inventors

Saint Nom la Bretechè, France

Francois Drain