LEONIDAS U(Mo) Dispersion Fuel Qualification Program: progress and perspectives

François Charollais, Patrick Lemoine, Yoann Calzavara, Hervé Guyon, Edgar Koonen, Sven Van den Berghe, Christophe Jarousse, Bertrand Stepnik, Dominique Geslin

Research outputpeer-review


The objective of the LEONIDAS project (joining SCK•CEN, ILL, CEA and AREVA-CERCA) is to perform a common program for the qualification of the U(Mo) dispersion LEU fuel. The first experiment, called E-FUTURE, has tested in BR2 4 full size fuel plates made of U(Mo) atomized powder dispersed in an Al matrix with Si addition (4 and 6 % Si) at a maximum heat flux of 470 W/cm². The mean and maximum burnup reached were respectively about 48 % and 70 % 235U without cladding failure. The non destructive Post Irradiation Examinations have shown a local abnormal swelling in the highest burnup region, but with a positive evolution from 4 % to 6 % Si. The results of these detailed non-destructive analyses are also given at this conference. A new experiment, called E-FUTURE II, with higher Si contents in the matrix has been planned and defined in close collaboration with the US partners in order to pursue the performance validation of U(Mo) dispersion fuel. This new program will help to select the optimal fuel plate characteristics for the subsequent BR2 mixed curved fuel element irradiation test. The progress and the perspectives of the LEONIDAS project are described in this paper.
Original languageEnglish
Title of host publicationProceedings of the Reduced Enrichment for Research and Test Reactors (RERTR) conference 2011
Place of PublicationUnited States
StatePublished - 27 Oct 2011
EventRERTR 2011 - 33rd RERTR 2011 International Meeting on Reduced Enrichment for Research and Test Reactors - Mariotte Santiago Hotel, Santiago
Duration: 23 Oct 201127 Oct 2011


ConferenceRERTR 2011 - 33rd RERTR 2011 International Meeting on Reduced Enrichment for Research and Test Reactors
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