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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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May 2024
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Nuclear Science and Engineering
June 2024
Nuclear Technology
Fusion Science and Technology
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 Evolution of Material Properties
Monday, December 11, 2023|9:30–11:30AM CST|Galerie 1
Session Chair:
Gary Was (Univ. Michigan)
Track Organizers:
Thak Sang Byun (ORNL)
Dong Liu (University of Bristol)
Alternate Chair:
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A Review of the Mechanical Properties of the 316 Stainless Steel Family for Advanced Nuclear Reactors Application
9:30–9:50AM CST
R. Song (INL), M.D. Eklund (INL), A.M Jokisaari (INL), R.A. Roach (INL), C. Topbasi (EPRI)
Paper
Influence of Initial Microstructure and Sampling Location on the Mechanical Behavior of Additively Manufactured 316L Stainless Steel After Neutron Irradiation
9:50–10:10AM CST
Thak Sang Byun (ORNL), Jesse W. Werden (ORNL), Maxim N. Gussev (ORNL), Timothy G. Lach (ORNL), Annabelle Le Coq (ORNL), Kory Linton (ORNL)
Applying Micro-Tensile Testing, Atom Probe Tomography, and High-Resolution TEM Characterization to Harvested High Dose Zorita Light Water Reactor Internals
10:10–10:30AM CST
Cameron Howard (INL), Mukesh Bachhav (INL), Boopathy Kombaiah (INL), Fei Teng (INL), Sohail Shah (INL), Yachun Wang (INL), Jason Daniel (U.S. Nuclear Regulatory Commission)
Analysis of Porosity Defects and Their Impact on Tensile Behavior in LPBF Stainless Steel 316 L Utilizing X-ray Computed Tomography
10:30–10:50AM CST
Tasrif UI Anwar (Utah State), Patrick Merighe (Utah State), Rahul Reddy Kancharla (INL), Boopathy Kombaiah (INL), Nadia Kouraytem (Utah State)
In-Situ 3D High-Energy X-ray Diffraction Study on Deformation Behavior of Neutron-Irradiated Fe-9%Cr
10:50–11:10AM CST
Dominic Piedmont (Univ. Illinois, Urbana-Champaign), Jun-Sang Park (ANL), Peter Kenesei (ANL), Jonathan Almer (ANL), Matthew Kasemer (Univ. Alabama), Ezra Mengiste (Univ. Alabama), Meimei Li (ANL), Xuan Zhang (ANL), James F. Stubbins (Univ. Illinois, Urbana-Champaign)
Atomistic Simulation of Hydrogen Segregation to Grain Boundaries and Crack Tips
11:10–11:30AM CST
Richard W. Smith (Naval Nuclear Laboratory)
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