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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
C. Varlam, I. Vagner, I. Faurescu, D. Faurescu
Fusion Science and Technology | Volume 67 | Number 3 | April 2015 | Pages 623-626
Proceedings of TRITIUM 2013 | doi.org/10.13182/FST14-T95
Articles are hosted by Taylor and Francis Online.
In order to determine organically bound tritium (OBT) from environmental samples, these must be converted to water, measurable by liquid scintillation counting (LSC). For this purpose we conducted some experiments to determine OBT level of a grass sample collected from an uncontaminated area. The studied grass sample was combusted in a Parr bomb. However usual interfering phenomena were identified: color or chemical quench, chemiluminescence, overlap over tritium spectrum because of other radionuclides presence as impurities (14C from organically compounds, 36Cl as chloride and free chlorine, 40K as potassium cations) and emulsion separation.
The paper summarizes results of physico-chemical analyses of initial combustion water and of purified combustion water using 5 methods (distillation with chemical treatment, lyophilisation, chemical treatment followed by lyophilisation, azeotropic distillation with toluene and treatment with a volcanic tuff followed by lyophilisation), determining the value of pH, conductivity and content of some anions (SO4-2, Cl-, NO3-) and cations (Na+, K+, Ca+2, Mg+2, iron, chromium, nickel and copper). Afterwards, each sample was measured, and OBT measured concentration, together with physico-chemical analysis of the water analyzed, revealed that the most efficient method applied for purification of the combustion water was the method using chemical treatment followed by lyophilisation.