Abstracts and Available Papers Presented at the 2002 International RERTR Meeting
LFR FACILITY (CNEA) FOR BURNUP DETERMINATION IN URANIUM SILICIDE FUELS 20% 235U
C. Devida, E. Gautier, D. Gil, A. Stankevicius
Comisión Nacional de Energía Atómica,
The LFR Facility is a radiochemical laboratory designed and
constructed with a hot-cells line, a glove-box and a fume-hood, all of them
suited to work with radioactive materials.
At the beginning of the LFR operation a series of dissolutions
of MTR irradiated silicide fuel elements was performed, and determined its isotopic
composition of 235U, 239Pu and 148Nd (this
last as burnup monitor), by the thermal ionization mass spectrometry (TIMS).
These assays are linked to the IAEA RLA/4/018 Regional Project “Management of
Spent Fuel from Research Reactors”. It is concluded that this technique of
burnup measurement is powerful and accurate when properly applied, and permit
to validate the calculation codes when isotopic dilution is performed.
It is worth noticed the LFR capacity to carry on different
research and development programs (R+D) in the Nuclear Fuel Cycle field, such
as the previously mentioned absolute burnup measurements, or the evaluation of
radioactive waste immobilization processes and researches on burnable poisons.
Mr. Claudio Devida Hot Chemical Laboratory Manager CNEA-CAE Avda. del Libertador 8250 C1429BNO Buenos Aires, Argentina Phone: (54.11) 4379 8486 Fax: (54.11) 4379 8293
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