Abstracts and Available Papers Presented at the
1996 International RERTR Meeting
PROGRAM OF CONVERTING IEA-R1 BRAZILIAN
RESEARCH REACTOR FROM HEU TO LEU
Jose Augusto Perotta
Divisao de Engenharia do Nucleo
Paulo Ernesto de Oliveria Lainetti
Departamento de Tecnologia de Combustiveis
Instituto de Pesquisas Energeticas e Nucleares - IPEN- CNEN/SP
Travessa R400 - Cidade Universitaria, Sao Paulo - SP - Brazil - 05598/900
IEA-R1 is a pool type research reactor that operates since 1957 at IPEN-CNEN/SP in Sao Paulo, Brazil. Although designed to operate a 5 MW it has been operating, since the beginning, at 2 MW and has been used for radioisotope production and research. The earlier cores used LEU MTR fuels but in the late 60's it was changed to HEU MTR fuels. Since the 80's up to now the reactor has been changing its core from HEU to LEU fuels. IPEN has been producing and qualifying its own LEU MTR fuels, made with U3O8-Al dispersion fuel plates with 1.9 gU/cm3. Two-thirds of the IEA-R1 core are already occupied with the IPEN fuels. IPEN is now producing U3O8-A1 dispersion fuel plates with 2.3 gU/cm3 and will also produce U3Si2-Al dispersion fuel plates with 3.0 gU/cm3 as a planned optimization of IEA-R1 core and upgrade of the reactor power from 2 to 5 MW in order to increase the radioisotope production. In 1997 IEA-R1 is planned to have only LEU fuels in the core.
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An electronic copy of the full paper is not available at this time. If you would like to receive a copy of this paper, please contact the author.
Mr. Jose Augusto Perrotta
IPEN/CNEN - SP - Travessa R 400-Cidade
Universitaria-Sao Paulo, SP, Brazil 05508-900