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| RA-3 reactor | |
|---|---|
| Name | RA-3 |
| Location | Buenos Aires |
| Country | Argentina |
| Operator | National Atomic Energy Commission |
| Type | "research reactor" |
| Power | "5 MWt" |
| Construction | "1958" |
| First crit | "1967" |
| Status | "decommissioned" |
RA-3 reactor The RA-3 reactor was a heavy-water moderated, light-water cooled research reactor located near Buenos Aires and operated by the National Atomic Energy Commission at the Ezeiza Atomic Center and later at the Constitucion complex. It served as a central facility for nuclear research, isotope production, and neutron beam experiments that linked Argentine programs with international institutions such as the International Atomic Energy Agency, the United States Atomic Energy Commission, and the Comisión Europea de Energía Atómica.
The RA-3 design combined features from contemporaneous reactors developed in Canada and United States, reflecting technical exchange with the Chalk River Laboratories, the Argonne National Laboratory, and the Oak Ridge National Laboratory. Core characteristics included a heavy-water moderator supplied from sources in Neuquén Province and a light-water cooling loop influenced by engineering practices at Westinghouse Electric Company and General Electric. The reactor's thermal output was rated at approximately 5 megawatts thermal, comparable to research reactors at Massachusetts Institute of Technology and the Institut Laue–Langevin, enabling neutron fluxes suitable for work tied to Comisión Nacional de Energía Atómica programs and collaboration with universities such as the Universidad de Buenos Aires and the Universidad Nacional de La Plata.
Initial planning drew on Argentine initiatives under leaders linked to the Instituto Balseiro and advisors who trained at Massachusetts Institute of Technology, Imperial College London, and the University of California, Berkeley. Procurement and engineering benefitted from contacts with manufacturers like Siemens and consulting from scientists associated with CERN and the International Atomic Energy Agency. Construction milestones aligned with Argentine industrial policies from the late 1950s and early 1960s, reflecting cooperation with research centers including the Comisión Nacional de Energía Atómica and the Instituto de Tecnología Nuclear. Key figures in the project had backgrounds tied to institutions such as the Consejo Nacional de Investigaciones Científicas y Técnicas, the Instituto Balseiro, and the Universidad Nacional de Cuyo.
During operation, RA-3 supported research collaborations with laboratories like Chalk River Laboratories, Oak Ridge National Laboratory, and the Los Alamos National Laboratory, while hosting visiting scientists from the International Atomic Energy Agency and universities including the Massachusetts Institute of Technology, the University of Oxford, and the Universidad de Buenos Aires. The facility produced medical and industrial isotopes in partnership with hospitals such as the Hospital Nacional de Clínicas and research institutes like the Fundación Centro de Estudios Farmacológicos y Botánicos. Operational incidents and regulatory reviews invoked oversight from bodies connected to the International Atomic Energy Agency and prompted safety assessments referencing standards in use at Oak Ridge National Laboratory and Argonne National Laboratory.
RA-3 enabled neutron activation analysis used by research groups at the Consejo Nacional de Investigaciones Científicas y Técnicas and the Instituto Balseiro, supporting archaeology work with the Museo Nacional de Bellas Artes and materials science studies linked to the Universidad Nacional de La Plata and the Universidad Nacional del Comahue. Isotope production served medical centers such as the Hospital Italiano de Buenos Aires and the Hospital Garrahan, supplying radionuclides for diagnostics and therapy in collaboration with the Sociedad Argentina de Radiología and international partners at the International Atomic Energy Agency and the World Health Organization. Beamlines and neutron scattering experiments involved academics from the Universidad de Buenos Aires, the Universidad Nacional del Litoral, and the Instituto de Física de Rosario, yielding publications shared with journals associated with the American Physical Society and the European Physical Society.
Decommissioning processes coordinated activities among the National Atomic Energy Commission, provincial authorities in Buenos Aires Province, and consultants with experience at Oak Ridge National Laboratory and Sellafield. Legacy outcomes included training programs at the Instituto Balseiro, policy discussions with the International Atomic Energy Agency, and archival material preserved at universities such as the Universidad de Buenos Aires and institutions like the Consejo Nacional de Investigaciones Científicas y Técnicas. The RA-3's contributions influenced subsequent Argentine projects, linking to later installations and initiatives involving the Comisión Nacional de Energía Atómica, the Centro Atómico Bariloche, and collaborations with international laboratories including CERN and Institut Laue–Langevin.
Category:Nuclear reactors in Argentina Category:Research reactors