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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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Nuclear Technology
Fusion Science and Technology
May 2025
Latest News
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
A. N. Golubkov, A. A. Kononenko, A. A. Yukhimchuk
Fusion Science and Technology | Volume 48 | Number 1 | July-August 2005 | Pages 527-533
Technical Paper | Tritium Science and Technology - Materials Interaction and Permeation | doi.org/10.13182/FST05-A981
Articles are hosted by Taylor and Francis Online.
Hydrogen isotopes sources with pressure up to several thousand atmospheres are required to pursue some investigations in nuclear and thermonuclear processes. Investigations are performed in mixtures of all three hydrogen isotopes. Stringent requirements are placed on such sources. Primarily, this is reliability and safety, purity of supplied gas, possibility of smooth pressure control, minimal dimensions and the ease to operate. Vanadium-base thermodesorption sources meet these requirements. Literature data on equilibrium pressures of hydrogen isotopes desorption over vanadium dihydride phase have been reviewed. It has been shown that in data analysis, gas nonideality at high pressure should be taken into account. In particular, when showing temperature dependencies of desorption equilibrium pressures it is reasonable to use appropriate value of fugacity. The paper presents temperature dependencies of protium and deuterium fugacity over corresponding dihydride vanadium phases in the range of 300-635K, determined using experimental data of the authors. Temperature dependence of tritium fugacity over dihydride vanadium phase at 273-483K determined using experimental data of the authors and available literature data are also presented. A series of vanadium-base thermodesorption high-pressure hydrogen isotopes sources have been developed in RFNC-VNIIEF using of the obtained dependencies. Schemes of sources for research in fundamental science are presented.