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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
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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June 2024
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Latest News
How robust is HALEU from a nonproliferation perspective?
Shikha Prasad
High-assay low-enriched uranium (HALEU) has emerged as a popular fuel choice for advanced small modular reactors due to its long power production periods before refueling. It is currently being pursued by TerraPower, X-energy, BWX Technologies, Kairos, Oklo, and other reactor companies. HALEU has a uranium-235 enrichment ranging from 5 percent to 20 percent, whereas traditional LWRs use low-enriched uranium fuel enriched up to 5 percent.
HALEU will provide power for longer durations, compared with traditional LWRs. But could it also provide an opportunity for more rapid proliferation, as is speculated in a 2023 National Academy of Sciences report on advanced nuclear reactors (nap.nationalacademies.org/catalog/26630/)?
If a nuclear proliferator conspires to divert fresh nuclear fuel for weapons production when it has not been used in a reactor, the effort required in separative work units (SWUs) to enrich U-235 from 5 percent to 90 percent and that required to enrich from 20 percent to 90 percent are both very small, compared with the effort required to enrich U-235 from its natural abundance to the initial 5 percent.
Technical Session|Sponsored by Fundamental Irradiation Damage
Thursday, December 14, 2023|3:10–4:50PM CST|Galerie 6
Session Chair:
Anne A. Campbell (ORNL)
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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Kinetics and Stability of Nano-Scale Precipitates in Fe-Based Alloys During Ion Irradiations
3:10–3:50PM CST
Yajie Zhao (ORNL), Pengcheng Zhu (Univ. Tennessee, Knoxville), Jonathan Poplawsky (ORNL), Arunodaya Bhattacharya (U.K. Atomic Energy Authority), Steven Zinkle (Univ. Tennessee, Knoxville)
Presented by Siwei Chen (Univ. Tennessee, Knoxville)
Paper
Impact of Micro-Alloying and Precipitation in Ion-Irradiated Nickel: From the Inhibition of Point-Defect Cluster Diffusion by Thermal Segregation to the Change of Dislocation Loop Nature
3:50–4:10PM CST
M. Loyer-Prost (CEA), K. Ma (CEA), B. Décamps (Univ. Paris-Saclay), L. Huang (CEA), M. Nastar (CEA), R.E. Schäublin (ETH Zurich), J.F. Löffler (ETH Zurich), A. Fraczkiewicz (CNRS), M.A. Belghoul (CEA), P. Vermaut (CNRS), F. Prima (CNRS)
Beryllium Carbide Tolerance to Radiation Damage for Advanced Reactor Moderators
4:10–4:30PM CST
Diego A. Muzquiz (Univ. Michigan), Stephen S. Raiman (Univ. Michigan)
Temperature Dependent Evolution of Microstructure in Fe10Cr Alloy Under Proton Irradiation
4:30–4:50PM CST
Siwei Chen (Univ. Tennessee, Knoxville), Yajie Zhao (ORNL), Yao Li (Univ. Tennessee, Knoxville), Qinyun Chen (Univ. Tennessee, Knoxville), Steven J. Zinkle (Univ. Tennessee, Knoxville)
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