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Radiation Protection Dosimetry Advance Access originally published online on May 17, 2005
Radiation Protection Dosimetry 2005 114(4):546-550; doi:10.1093/rpd/nci303
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oupjournals.org

The legacy of monazite processing in Brazil

Dejanira da Costa Lauria* and Elaine R. R. Rochedo

Institute of Radiation Protection and Dosimetry (IRD), Comissão Nacional de Energia Nuclear, Caixa Postal 37750, Rio de Janeiro, RJ, Brazil

* Corresponding author: dejanira{at}ird.gov.br

Received February 25, 2005, amended March 29, 2005, accepted April 19, 2005

The exploitation of natural resources containing naturally occurring radionuclides may lead to enhanced levels of radioactive isotope and enhanced potential for exposure to naturally occurring radionuclides in products, by-products, residues or wastes. Such resources include, for instance, monazite, the processing of which, in Brazil, generated a great amount of radioactive residues, being stored in buried concrete tanks, in temporary storage buildings and in sealed trenches. In addition, during the 1980s there were no radiological protection rules concerning the storage and transportation of these kinds of residues. Mineral radioactive residues were used as landfills and the residues of chemical processes contaminated floors and buildings. The decommissioning process and cleaning of old plants have generated tons of wastes that has been added to previously produced wastes. This paper reports and discusses the cycle of monazite in Brazil and its consequences in terms of site remediation and amount of wastes and residues generated and stored.


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