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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!
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June 2025
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NRC news roundup
Here’s a look at some recent announcements from the Nuclear Regulatory Commission.
Summer SLR: The NRC this month published its final environmental impact statement for Summer Unit 1’s subsequent license renewal application. Dubbed a supplemental EIS, the report is an important step in determining if Dominion Energy can continue operating its 966-MWe Westinghouse pressurized water reactor unit for an additional 20 years beyond August 6, 2042, the current end of its license.
Technical Session|Methods
Monday, April 22, 2024|10:15AM–12:00PM PDT|Franciscan D
Session Chair:
Jeremy Bousquet (GRS)
Alternate Chair:
Emily Shemon (ANL)
Session Organizer:
Mathieu Hursin (École Polytechnique Fédérale de Lausanne)
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Impact of the Multiphysics Coupling on the Reactivity Swing and Fuel Depletion of an SFR Phenix Like Subassembly
10:15–10:35AM PDT
V. Viallon (CEA), E.Y. Garcia-Cervantes (CEA), L. Buiron (CEA)
Paper
Investigation of Ring-Heterogeneous Geometry Approximation for Efficient and Practical SFR Analysis
10:35–10:55AM PDT
Namjae Choi (INL), Stefano Terlizzi (INL), Yaqi Wang (INL), Hansol Park (ANL), Changho Lee (ANL), Javier Ortensi (INL)
Modeling and Validation of Axial Thermal Expansion in the ARMI Framework
10:55–11:15AM PDT
Chris Keckler (TerraPower), Anthony L. Alberti (TerraPower)
Modeling of Sodium Fast Reactors Thermal Expansion Reactivity Feedback Using GeN-Foam and Serpent
11:15–11:35AM PDT
Giovanni Nervi (École Polytechnique Fédérale de Lausanne), Alessandro Scolaro (École Polytechnique Fédérale de Lausanne), Mathieu Hursin (École Polytechnique Fédérale de Lausanne), Carlo Fiorina (TAMU)
Uniform and Non-Uniform Geometric Deformations in Monte Carlo with Virtual Density Theory
11:35–11:55AM PDT
Anuj Dubey (Univ. Cambridge), Mikolaj Adam Kowalski (Univ. Cambridge), Eugene Shwageraus (Univ. Cambridge)
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