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Division Spotlight
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.
Meeting Spotlight
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!
Latest Magazine Issues
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
July 2025
Fusion Science and Technology
Latest News
Nuclear fuel cycle reimagined: Powering the next frontiers from nuclear waste
In the fall of 2023, a small Zeno Power team accomplished a major feat: they demonstrated the first strontium-90 heat source in decades—and the first-ever by a commercial company.
Zeno Power worked with Pacific Northwest National Laboratory to fabricate and validate this Z1 heat source design at the lab’s Radiochemical Processing Laboratory. The Z1 demonstration heralded renewed interest in developing radioisotope power system (RPS) technology. In early 2025, the heat source was disassembled, and the Sr-90 was returned to the U.S. Department of Energy for continued use.
Technical Session|Sponsored by Fundamental Irradiation Damage
Tuesday, December 12, 2023|8:00–9:40AM CST|Galerie 6
Session Chair:
Yanwen Zhang (INL)
Alternate Chair:
Flyura Djurabekova (Univ. Helsinki)
Track Organizers:
Steve Zinkle (University of Tennessee & Oak Ridge National Laboratory)
Mitra Taheri (Johns Hopkins University)
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Machine-Learned Interatomic Potentials for Radiation Damage in Metals and Alloys
8:00–8:40AM CST
J. Byggmästar (Univ. Helsinki), K. Nordlund (Univ. Helsinki), F. Djurabekova (Univ. Helsinki)
Paper
Atomistically-Informed Cluster Dynamics Modelling of Concurrent Interstitial and Vacancy a-Loop Evolution in Alpha-Zirconium
8:40–9:00AM CST
Jose F. March-Rico (Naval Nuclear Laboratory), Sophie Blondel (Univ. Tennessee, Knoxville), Brian D. Wirth (Univ. Tennessee, Knoxville)
Hydrogen Pickup via the Implantation of Collision Recoils
9:00–9:20AM CST
Richard W. Smith (Naval Nuclear Laboratory), Bruce F. Kammenzind (Naval Nuclear Laboratory)
Faulted Vacancy Basal Pyramids and Their Impact on Breakaway Growth in α-Zr
9:20–9:40AM CST
N. Militello (Univ. Tennessee, Knoxville), S. Blondel (Univ. Tennessee, Knoxville), J.F. March-Rico (Naval Nuclear Laboratory), B.D. Wirth (Univ. Tennessee, Knoxville)
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