[en] The document informs about the activities made by the Institute of Nuclear Affairs (Colombia) during 1984 for each one of the technical areas: Agriculture, Industrial Applications and Metallurgy, Biochemistry and Radiopharmacy, Process Development, Electronics, Solar Energy, Gamma Facility, Nuclear Physics, Hydrology, Raw Materials, Chemistry, Health Physics, Reactor, and Library and Publications

[en] The document informs about the activities made by the Institute of Nuclear Affairs (Colombia) during 1986

[en] The document informs about the activities made by the Institute of Nuclear Affairs (Colombia) during 1987 for each one of the technical areas: Agriculture, Industrial Applications and Metallurgy, Biochemistry and Radiopharmacy, Process Development, Electronics, Solar Energy, Gamma Facility, Nuclear Physics, Hydrology, Raw Materials, Chemistry, Health Physics, Reactor, and Library and Publications

[en] The document informs about the activities made by the Institute of Nuclear Affairs (Colombia) during 1985

[en] The document informs about the activities made by the Institute of Nuclear Affairs (Colombia) during 1988 for each one of the technical areas: Agriculture, Industrial Applications and Metallurgy, Biochemistry and Radiopharmacy, Process Development, Electronics, Solar Energy, Gamma Facility, Nuclear Physics, Hydrology, Raw Materials, Chemistry, Health Physics, Reactor, and Library and Publications

No abstract available

[en] This paper presents the neutronic analysis for the conversion of the 10 Kw IAN-R1 research reactor from HEU (90%) to LEU (20%). By changing the number of LEU plates per standard element, five different LEU prototype cores are found acceptable in excess reactivity, and deeper studies with the lowest and highest δK/K% are carried out

[en] The IAN-R1 reactor was furnished to the Government of Colombia under the 'Atoms for Peace' program by the U.S. Government. The reactor was constructed by Lockheed Aircraft Corporation and achieved initial critically at the Institute for Nuclear Studies in Bogota on 20 January, 1965. The reactor core consists of aluminum clad MTR-type plate fuel elements containing fully-enriched uranium (HEU). The reactor was initially designed to operate at a steady-state power level of 20-kW but has operated at 30-kW for the past several years. The principal applications of the reactor are radioisotope production, radiochemistry, neutron activation analysis, training, and neutron beam physics. Beginning in 1987, a program was initiated to upgrade and modernize the reactor facility. The modernization program has included replacement of the original instrumentation and control system with a new state-of-the-art microprocessor-driven digital system and addition of a new radiation monitoring system

[en] The IAN-R1 reactors has been operating by the Instituto de Asuntos Nucleares since early 1965. The reactor is used for the production of short lived radioisotopes, radiochemistry, neutron activation analysis and training. The power level is 30 kw. The reactor core consists of 16 HEU plate-type fuel elements, that have been in the core for over 26 years. At 1990 the instrumentation was replaced for a new control system with a microprocessor driven digital control console and data acquisition system. Last year it was installed a new radiation monitoring system and control rod drives with stepping motor drives. The future modifications of the reactor will include the core conversion to LEU and finally the increase of the power between 500 kw and 1 Mw

[en] The IAN-R1 reactor is the only nuclear reactor operating in Colombia; it is installed at the Institute of Nuclear Affairs (AIN) in Bogota, which is an official body coming under the Ministry of Mining and Energy. This reactor started operation in January 1965 with a rated power of 10 kW and was modified a year later to operate at 20 kW, which has been its rated power up to the present. Given its importance for the application of nuclear technology in Columbia for various purposes, principally in the areas of neutron activation analysis, determination of uranium content in minerals using the delayed neutron counting method, production of certain radioisotopes such as ¹⁹⁸Au and ⁸²Br for engineering applications, and production of radioactive material for teaching and research purposes, research has been in progress for some years into ways of increasing its power. The study on experimental requirements and on the demand for locally produced radioisotopes came to the conclusion that its power should be increased to 1000 kW, which would allow the facility to remain on the same site. The modification includes conversion of the core to low-enriched fuel, operation up to 1 MW, modification of the shielding, renovation of instrumentation and installation of a radioisotope processing plant. When the reactor is modified we will be able to produce other radioisotopes for applications in nuclear medicine, industry and engineering; at the same time, the safety of the facility will be optimized and the experimental facilities improved