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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Increasing productivity in the manufacture of UAl2-Al dispersion-plate targets for Mo-99 production

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Author(s):
Durazzo, Michelangelo [1] ; Conturbia, Giovanni L. C. R. [1] ; de Carvalho, Elita F. Urano [1]
Total Authors: 3
Affiliation:
[1] IPEN CNEN SP, Nucl & Energy Res Inst, Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: PROGRESS IN NUCLEAR ENERGY; v. 140, OCT 2021.
Web of Science Citations: 0
Abstract

Molybdenum-99 is the most important isotope because its daughter isotope, technetium-99 m, has been the most widely used medical radioisotope. The primary method employed to produce Mo-99 derives from the fission of U-235 incorporated in so-called irradiation targets. Pushed by the international Mo-99 crisis that occurred in 2009/2010, Brazil has decided to construct a new research reactor, the Brazilian Multipurpose Reactor (RMB), to produce this vital radioisotope to meet the Brazilian domestic demand. As part of this effort, it has been developed the process for manufacturing the target to be used in the production of Mo-99 by nuclear fission. The low enriched uranium (LEU) aluminide with the predominant phase UAl2 was the starting material. The pictureframe technique was used to clad UAl2-Al briquette with aluminum to obtain plate-type targets. It was developed an innovative method that allows increasing the productivity of this type of target based on multi-core rolling. A thermomechanical treatment was designed to get targets composed basically of a mixture of UAl3/UAl4 that are the required phases for a proper radiochemical dissolution after irradiation. The manufacturing process proved to be suitable for domestic production of targets, fulfilling the specification to produce Mo-99 in the Brazilian Multipurpose Reactor. (AU)

FAPESP's process: 18/18228-1 - RERTR-2018 International Meeting on Reduced Enrichment for Research and Test Reactors
Grantee:Michelangelo Durazzo
Support Opportunities: Research Grants - Meeting - Abroad
FAPESP's process: 11/13849-9 - Technology development for manufacturing UAlx-Al dispersion targets for nationalization of the 99Mo production by nuclear fission
Grantee:Michelangelo Durazzo
Support Opportunities: Regular Research Grants