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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.
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2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott 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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Latest News
NuScale Energy Exploration Center opens at George Mason University
NuScale Power Corporation has opened another Energy Exploration (E2) Center—this one at George Mason University in Arlington, Va. Just last month, a NuScale E2 Center opened at South Carolina State University in Orangeburg, S.C. The newest E2 at George Mason is the company’s 11th center.
K. Hilpert, R. Odoj, H. W. Nürnberg
Nuclear Technology | Volume 61 | Number 1 | April 1983 | Pages 71-77
Technical Paper | Nuclear Fuel | doi.org/10.13182/NT83-A33144
Articles are hosted by Taylor and Francis Online.
The potential of Al2O3/SiO2 additives for the retention of cesium in coated particles of high-temperature gas-cooled reactors is elucidated by fundamental studies of the system Cs2O−Al2O3−SiO2. Samples with nine different compositions were prepared by applying hydrothermal crystallization. Their phase composition was studied by x-ray diffraction extending the knowledge about the phase diagram. The vaporization of the samples was investigated with high-temperature mass spectrometry. From the partial pressures obtained for cesium, the efficiency of the various cesium aluminosilicate phases for the retention of cesium can be determined. The cesium pressures together with the phases observed in the samples provide the basis for cesium retention as a function of the optimum composition and quantity of the Al2O3/SiO2 additives. By comparing the cesium partial pressures over the various cesium aluminosilicates with those that are necessary for the formation of cesium lamellar compounds in reactor-grade graphite and pyrolytic graphite, it is found that lamellar compounds cannot be formed in coated particles if cesium aluminosilicates are formed.