Pyrochemistry within Europart Assessment of the Studies on spent fuel treatment processes Collective Work

S. Bourg, C. Caravaca, J. Finne, G. De Angelis, R. Malmbeck, B.G. Lewin, J. Uhlir, T. Inoue, V. Luca, C. Madic

Research output: Contribution to conferencePaper

Abstract

In the continuation of PYROREP (FP5), the pyrochemical domain of EUROPART (FP6) involves today seven European participants and two international partners in order to assess treatment processes which could be used in a broad variety of fuel cycles (MSR spent fuel, metallic, oxide, carbide or nitride fuels from any reactors). Indeed, a pyrochemical process is not sensitive to radiolysis, and obviously to temperature effects, and could afford to treat fuels after a short cooling period, even at high concentrations. Within EUROPART, the chemistry of actinides and of some fission products was studied in depth in either chloride or fluoride molten salts. Laboratory-scale demonstration experiments were used in order to assess electrolytic processes in molten chlorides and liquid-liquid reductive extraction in molten fluoride/liquid aluminum. An electrolysis process is also under development in molten fluoride. To complete the studies, the development of devices and the modeling of processes are taken into consideration. In order to be fitted for acceptance, a process has to produce minimal quantities of wastes, compatible with storage constraints. Therefore, decontamination techniques, as well as materials suitable for disposal, have to be developed. Fission products precipitation by carbonate and phosphate, and filtration on zeolites were studied. Some original confinement matrices such as sodalite or pollucite were also studied. Integration studies have been carried out in order to evaluate and to compare some selected process flowsheets and possibly to redirect R&D programs.
Original languageEnglish
Publication statusPublished - 2008
Externally publishedYes
EventSociete Francaise d'Energie Nucleaire - International Congress on Advances in Nuclear Power Plants - ICAPP 2007, "The Nuclear Renaissance at Work" - , France
Duration: 1 Jan 2008 → …

Conference

ConferenceSociete Francaise d'Energie Nucleaire - International Congress on Advances in Nuclear Power Plants - ICAPP 2007, "The Nuclear Renaissance at Work"
CountryFrance
Period1/1/08 → …

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All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering

Cite this

Bourg, S., Caravaca, C., Finne, J., De Angelis, G., Malmbeck, R., Lewin, B. G., ... Madic, C. (2008). Pyrochemistry within Europart Assessment of the Studies on spent fuel treatment processes Collective Work. Paper presented at Societe Francaise d'Energie Nucleaire - International Congress on Advances in Nuclear Power Plants - ICAPP 2007, "The Nuclear Renaissance at Work", France.