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

Goro Hiromoto; José Claudio Dellamano

doi:10.15392/bjrs.v3i1A.160

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

Authors

Goro Hiromoto Instituto de Pesquisas Energéticas e Nucleares
José Claudio Dellamano Instituto de Pesquisas Energéticas e Nucleares

DOI:

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

Keywords:

molibdenio, rejeito radioativo, fissão

Abstract

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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Author Biographies

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

References

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.

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Published

2015-05-23

Issue

Vol. 3 No. 1A (Suppl.) (2015): ENAN 2014

Section

Articles

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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How to Cite

Rejeitos radioativos gerados na produção de Mo-99 por fissão nuclear. Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 3, n. 1A (Suppl.), 2015. DOI: 10.15392/bjrs.v3i1A.160. Disponível em: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/160.. Acesso em: 3 may. 2024.