Ibarra Fernández, C.; Sanhueza Mir, A.; Mendoza Contreras, M.; Contreras Canales, N., E-mail: marcelo.mendoza@cchen.cl
Proceedings of XI Regional Congress on Radiation and Nuclear Safety, Regional Congress of the International Radiation Protection Association (IRPA))2018
Proceedings of XI Regional Congress on Radiation and Nuclear Safety, Regional Congress of the International Radiation Protection Association (IRPA))2018
AbstractAbstract
[en] The presence of radioisotopes in liquid wastes opens a possibility for their treatment through different processes and technologies that allow to decontaminate liquids, concentrating radioisotopes in a solid, and with this decrease the total volume of radioactive waste. This work presents the 2000 [L] decontamination treatment of Uranyl Nitrate solution, with a Uranium concentration of 2 [g / L] and pH equal to 1, which allows to manage the dispensation of the liquid, since With the treatment developed, it changes its classification to liquid industrial waste (RIL), based on the recommendations of the IAEA GSR-Part 3. The methodology used for the treatment of the solution is precipitation of Uranyl Nitrate with Ammonium Hydroxide, supplemented by coprecipitation processes between Uranium and other compounds present in the solution. By performing batch and continuous tests, at laboratory level, the results show that a concentration is achieved of Uranium, in the final solution treated, less than required. As a result obtained in this process, the Uranium concentration in the solution decreases to a value less than 1 [mg / L], which is less than 1% of its initial concentration; and thus the reduction of the volume of radioactive material is achieved by 85%. This series of tests in the laboratory provides the basis for scaling the process and treating a larger volume of liquid radioactive waste, whose operation allows the solution to be radioactively decontaminated initial.
Original Title
Tratamiento de reducción de volumen de desechos radiactivos líquidos que contienen nitrato de uranilo
Primary Subject
Source
Sección de Protección Radiológica de la Sociedad Cubana de Física, La Habana (Cuba); Sociedad Cubana de Física (SCF), La Habana (Cuba); Centro de Protección e Higiene de las Radiaciones (CPHR), La Habana (Cuba); Centro Nacional de Seguridad Nuclear (CNSN), La Habana (Cuba); Dirección Nacional de Salud Ambiental (DNSA), La Habana (Cuba); Agencia de Energía Nuclear y Tecnologías de Avanzada (AENTA), La Habana (Cuba); Oficina de Regulación Ambiental y Seguridad Nuclear (ORASEN), La Habana (Cuba); Asociación Internacional de Protección Radiológica (IRPA), La Habana (Cuba); Federación de Radioprotección de América Latina y el Caribe (FRALC), La Habana (Cuba); International Atomic Energy Agency (IAEA), Vienna (Austria); Organización Panamericana de la Salud (OPS), La Habana (Cuba); Organización Mundial de la Salud (OMS), La Habana (Cuba); Foro Iberoamericano de Organismos Reguladores Radiológicos y Nucleares (FORO), La Habana (Cuba); 1 CD-ROM; ISBN 9 789597 231066; ; 20 Apr 2018; p. 218; 11. Regional Congress on Radiation and Nuclear Safety, Regional Congress of the International Radiation Protection Association (IRPA)); Havana (Cuba); 16-20 Apr 2018
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Book
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Conference
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Pereira Campos, V.; Sanhueza Mir, A.; Contreras Canales, N.; Mendoza Contreras, M.; Liebenberg, G.R.; Benitez Navarro, J.C.; Fernandez, I.M., E-mail: asanhuezamir@gmail.com
Proceedings of XI Regional Congress on Radiation and Nuclear Safety, Regional Congress of the International Radiation Protection Association (IRPA))2018
Proceedings of XI Regional Congress on Radiation and Nuclear Safety, Regional Congress of the International Radiation Protection Association (IRPA))2018
AbstractAbstract
[en] The generation rate of disused radioactive sources of industrial origin that are managed as Radioactive waste in Chile amounts to more than 100 units per year, with annual average activity of 18 Terabequerelios on the date of receipt at the radioactive waste management facilities. The objective of this work is to present the activities developed for the implementation of the process of conditioning of radiation sources in recoverable form, of categories 3 and 4, according to International Atomic Energy Agency standards and national regulatory framework. Inventory of existing radioactive waste, sources of Cesium 137 and Cobalt 60 were selected. The dismantling and obtaining the radioactive source itself, by brand and model of equipment originals, allowing verification of their physical and radiological characteristics. The operation was carried out in a sufficient armor workbench for a total activity of 250 Gigabequerels. The conditioning was done by depositing the sources in stainless steel capsule limited by the volume and activity of each source. The safety barriers for the capsule consist of shielding of lead and mortar jacketed container. As a result of this operation, a total of 111 sources of Cesium 137 with 150 Gigabequerels and 46 units of Cobalt 60 with 12 Gigabequerels They were conditioned in this operation. The radiation doses in contact with the final package are 0.5 milliSievert / hour for the bulk of Cesium and 0.1 milliSievert / hour for the bulk of Cobalt, complying with the operating conditions of the conditioned waste warehouse.
Original Title
Chile y la gestion de acondicionamiento de fuentes de radiación selladas en desuso en forma recuperable
Primary Subject
Source
Sección de Protección Radiológica de la Sociedad Cubana de Física, La Habana (Cuba); Sociedad Cubana de Física (SCF), La Habana (Cuba); Centro de Protección e Higiene de las Radiaciones (CPHR), La Habana (Cuba); Centro Nacional de Seguridad Nuclear (CNSN), La Habana (Cuba); Dirección Nacional de Salud Ambiental (DNSA), La Habana (Cuba); Agencia de Energía Nuclear y Tecnologías de Avanzada (AENTA), La Habana (Cuba); Oficina de Regulación Ambiental y Seguridad Nuclear (ORASEN), La Habana (Cuba); Asociación Internacional de Protección Radiológica (IRPA), La Habana (Cuba); Federación de Radioprotección de América Latina y el Caribe (FRALC), La Habana (Cuba); International Atomic Energy Agency (IAEA), Vienna (Austria); Organización Panamericana de la Salud (OPS), La Habana (Cuba); Organización Mundial de la Salud (OMS), La Habana (Cuba); Foro Iberoamericano de Organismos Reguladores Radiológicos y Nucleares (FORO), La Habana (Cuba); 1 CD-ROM; ISBN 9 789597 231066; ; 20 Apr 2018; p. 218; 11. Regional Congress on Radiation and Nuclear Safety, Regional Congress of the International Radiation Protection Association (IRPA)); Havana (Cuba); 16-20 Apr 2018
Record Type
Book
Literature Type
Conference
Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CESIUM ISOTOPES, COBALT ISOTOPES, INTERMEDIATE MASS NUCLEI, INTERNAL CONVERSION RADIOISOTOPES, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, MANAGEMENT, MINUTES LIVING RADIOISOTOPES, NUCLEI, ODD-EVEN NUCLEI, ODD-ODD NUCLEI, PROCESSING, RADIATION SOURCES, RADIOISOTOPES, STORAGE, WASTE MANAGEMENT, WASTE PROCESSING, YEARS LIVING RADIOISOTOPES
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