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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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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
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Junjie Zhao, Zhaochun Zhang, Haibo Guo, Yang Wang
Fusion Science and Technology | Volume 80 | Number 5 | July 2024 | Pages 666-681
Research Article | doi.org/10.1080/15361055.2023.2228013
Articles are hosted by Taylor and Francis Online.
A computational study of the thermodynamic and elastic properties of the tungsten-berylliuminterface structure and the behavior of a helium-vacancy pair near the tungsten/beryllium interface is carried out by first-principles calculations. Briefly, the following properties were calculated: (1) electronic properties of the tungsten/beryllium interface structure and (2) thermodynamic functions, Gibbs free energy, entropy, and enthalpy and anisotropies and isotropic (poly-crystalline) elastic moduli (bulk, torsion, Young’s moduli) of the tungsten/beryllium interface structure containing helium interstitial atoms or helium-vacancy pairs. The computational study was to provide a critical appraisal of the effect of helium interstitial atoms on the properties of the tungsten/beryllium interface structure. Calculated interface properties could be incorporated in an antiradiation damaging feature evaluation system to develop and test tungsten-based composites as plasma-facing materials.
