Rejeitos radioativos gerados na produção de Mo-99 por fissão nuclear

Autores/as

  • Goro Hiromoto Instituto de Pesquisas Energéticas e Nucleares image/svg+xml
  • José Claudio Dellamano Instituto de Pesquisas Energéticas e Nucleares image/svg+xml

DOI:

https://doi.org/10.15392/bjrs.v3i1A.160

Palabras clave:

molibdenio, rejeito radioativo, fissão

Resumen

The Brazilian Government intends to construct a facility for molibdenium-99 production by nuclear fission, among other installations, at the Brazilian Multipurpose Reactor enterprise. This study aims to investigate in which extension the activity of the radioactive waste generated in the process is enhanced if different mass of the U-235 and irradiation time of the target is employed to produce the same quantity of Mo-99. The simulation was conducted using the computational code Origen S®, assuming that the target is composed of UAlx alloy with 19.9% enriched U-235 and irradiated in a thermal neutron flux of 1x1014 n.cm-2.s-1, to produce 185 TBq of Mo-99 per week. The results obtained for 3 to 21 days of continuous irradiation of targets with different mass of U-235 show that the amount of radioactive waste generated, in terms of total activity, does not appear to be a dominant aspect to be considered in the choice of Mo-99 production parameters.

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Biografía del autor/a

  • Goro Hiromoto, Instituto de Pesquisas Energéticas e Nucleares
    Gerência de Rejeitos Radioativos
  • José Claudio Dellamano, Instituto de Pesquisas Energéticas e Nucleares
    Gerência de Rejeitos Radioativos

Referencias

INTERNATIONAL ATOMIC ENERGY AGENCY. Production technologies for molyb-denum-99 and technetium-99m. IAEA, Vienna, 1999.

I. J. OBADIA. Suprimento de molibdênio 99 – Potencial crise de abastecimento no médio prazo e ações de mitigação propostas, In INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, 2013. Annals... Recife: Comissão Nacional de Energia Nuclear, 2013.

S. M. BOWMAN; I. C. GAULD. OrigenArp Primer: How to perform isotopic depletion and decay calculations with SCALE/ORIGEN. Oak Ridge National Laboratory, Oak Ridge, USA, 2010.

Publicado

2015-05-23

Cómo citar

Rejeitos radioativos gerados na produção de Mo-99 por fissão nuclear. Brazilian Journal of Radiation Sciences (BJRS), Rio de Janeiro, Brazil, v. 3, n. 1A (Suppl.), 2015. DOI: 10.15392/bjrs.v3i1A.160. Disponível em: https://bjrs.org.br/revista/index.php/REVISTA/article/view/160. Acesso em: 17 jul. 2025.