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Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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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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ANS announces 2025 Presidential Citations
One of the privileges of being president of the American Nuclear Society is awarding Presidential Citations to individuals who have demonstrated outstanding effort in some manner for the benefit of ANS or the nuclear community at large. Citations are conferred twice each year, at the Annual and Winter Meetings.
ANS President Lisa Marshall has named this season’s recipients, who will receive recognition at the upcoming Annual Conference in Chicago during the Special Session on Tuesday, June 17.
Yiyang Zhang, Zhu Fang, Xinxin Wu, Haitao Wang, Libin Sun, Xiaowei Luo, Xiaowei Li (Tsinghua Univ)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 84-93
The graphite dust, produced by friction of fuel pebbles, is a significant concern in potential accidents of HTGR because the graphite dust is closely coupled with radioactive fission product. The study of graphite particle-wall impaction is important to accurately estimate deposition rate of graphite dust. In this paper, both the spherical and non-spherical particle-wall impaction process are discussed based on FEM. By combining derived adhesion force with FEM, the results agree well with JKR model. The damping dissipation is employed to describe the energy loss, corresponding dimensionless damping coefficient is defined to establish the relation between damping coefficient and material properties. Meanwhile, the results of non-spherical particle impaction are also well predicted by dimensionless damping coefficient. It is also shown both adhesion force and damping dissipation are important at low incident velocity, while the effect of adhesion force is negligible and the dissipation is the dominant mechanism at high incident velocity. Besides, the contact area remains perfectly elastic deformation and never gets into failure when the incident velocity is lower than 20 m/s due to size effect. The results provide a possible approach for non-spherical particle-wall impaction, which can be combined with computational fluid dynamics (CFD) to estimate the deposition rate of graphite dust in HTGR.