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Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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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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 Integrated Phenomena in Reactor Materials
Wednesday, December 13, 2023|8:00–9:40AM CST|Galerie 5
Session Chair:
Yongfeng Zhang (University of Wisconsin- Madison)
Alternate Chair:
Andrew K. Hoffman (n/a)
Track Organizers:
Stu Maloy (PNNL)
Adrian Couet (University of Wisconsin- Madison)
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Rationalizing the Effects of Corrosion, Irradiation and Stresses on the Mechanical Performance of Structural Alloys Used Molten Salt Reactors
8:00–8:40AM CST
Laurent Capolungo (LANL), Xueyang Wu (LANL), Nathan Bieberdorf (Univ. California, Berkeley), Mark Asta (Univ. California, Berkeley), A. Rovinelli (LANL), M. Zecevic (LANL), R. Lebensohn (LANL)
Presented by David Andersson (LANL)
Paper
4D-STEM Strain Mapping of Internal and External Strain-Induced Phase Transformations in Ni-based Alloy 625
8:40–9:00AM CST
Caleb Clement (Westinghouse Electric Co.), Yongwen Song (Penn State), Jim Ciston (LBNL), Colin Ophus (LBNL), Yang Yang (Penn State), Janelle Wharry (Purdue)
Effects of Porosity on Buffer Layer Fracture Mode
9:00–9:20AM CST
A.M. Masri (Univ. Wisconsin, Madison), Y. Zhang (Univ. Wisconsin, Madison), A. Rezwan (Sandia), C. Griesbach (Univ. Wisconsin, Madison), R. Thevamaran (Univ. Wisconsin, Madison), T. Gerczak (ORNL), W. Jiang (INL)
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