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[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 1985

[en] Infinite multiplication factor (Kinfinity) is calculated for research Reactors with MTR fuel type. Linear approximation for neutron flux in the cladding is utilized. The behavior of some typical parameters for IAN-R1 Reactor are shown when fuel enrichment varies. (author)

[en] Calculation methods for radiation heat generation in nuclear reactor, based on the point kernel approach are revisited and applied to the graphite reflector of IAN-R1 reactor. A Fortran computer program was written for the determination of total heat generation in the reflector, taking 1155 point in it

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

[en] The ''Instituto de Asuntos Nucleares'' of Colombia is responsible for IAN-R1 reactor operation, a 20 Kw. nuclear power machine, which became critical the first time on January 20th, 1965. The introduction of nuclear energy in Colombia has allowed to carry out many peaceful applications, where the reactor has played a significant role in support of these programmes. At this time, the main activities are: Educational and training activities; nuclear research; neutron activation analysis; delayed neutron analysis and radioisotopes production for using in agriculture, industry, hydrology and engineering. A description is made of the reactor aspects that have contributed to scientific and technological improvements

[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] From the thermal-hydraulics point of view, the nuclear reactor IAN-R1 was analyzed, with special attention to its power upgrade capabilities. In a first calorimetric evaluation, the nominal power was also calibrated as a consequence of a theoretical and experimental matching results

[en] Isotopical techniques are used in hydrology area for exploration, evaluation and exploration of water investigation. These techniques have been used successfully and are often the best or only means for providing certain hydrogeological parameters