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Division Spotlight
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
Meeting Spotlight
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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RP3C Community of Practice’s fifth anniversary
In February, the Community of Practice (CoP) webinar series, hosted by the American Nuclear Society Standards Board’s Risk-informed, Performance-based Principles and Policies Committee (RP3C), celebrated its fifth anniversary. Like so many online events, these CoPs brought people together at a time when interacting with others became challenging in early 2020. Since the kickoff CoP, which highlighted the impact that systems engineering has on the design of NuScale’s small modular reactor, the last Friday of most months has featured a new speaker leading a discussion on the use of risk-informed, performance-based (RIPB) thinking in the nuclear industry. Providing a venue to convene for people within ANS and those who found their way online by another route, CoPs are an opportunity for the community to receive answers to their burning questions about the subject at hand. With 50–100 active online participants most months, the conversation is always lively, and knowledge flows freely.
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.
