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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
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver 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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May 2025
Nuclear Technology
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Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
Technical Session|Sponsored by NCSD|Cosponsored by NNPD
Thursday, December 2, 2021|10:00–11:45AM EST |Gunston
Session Chair:
Catherine M. Percher
Alternate Chair:
Alexander T. McSpaden
Session Organizer:
Jesson D. Hutchinson
Student Assistant:
Rizki Oktavian
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Similarity of the PMM-2 Critical Experiments and Criticality Safety Cases Based on the keff Sensitivity Analysis
10:05–10:25AM EST
Mariya Brovchenko (IRSN), Nicolas Arphant (IRSN)
Paper
Attachment — SLIDES-ppt
Attachment — SLIDES pdf
Investigation of Delayed Neutron Sensitivities for Several ICSBEP Benchmarks Using MCNP
10:25–10:45AM EST
J. Hutchinson (LANL), N. Kleedtke (LANL), J. Alwin (LANL), A. Clark (LANL), T. Cutler (LANL), W. Haeck (LANL), R. Little (LANL), D. Neudecker (LANL), M. Rising (LANL), T. Smith (LANL), N. Thompson (LANL)
Validation of Jezebel Reactivity Coefficients and Sensitivity Analysis
10:45–11:05AM EST
Theresa Cutler (LANL), Jesson Hutchinson (LANL), Noah Kleedtke (LANL), Michael Rising (LANL), Denise Neudecker (LANL), Bob Little (LANL), Nick Thompson (LANL)
Effective Delayed Neutron Fraction and Reactivity Coefficient Sensitivity-Based Similarity Metrics for New Experiment Design Optimization
11:05–11:25AM EST
N. Kleedtke (LANL), J. Hutchinson (LANL), I. Michaud (LANL), T. Grove (LANL)
A Verification of Flux Sensitivity Estimates Using the MCNP Tally Perturbation Tool
11:25–11:45AM EST
Juliann R. Lamproe (Univ. of Michigan), Theresa E. Cutler (LANL), Michael Y. Hua (Univ. of Michigan), Alexander R. Clark (LANL), Jesson D. Hutchinson (LANL), Shaun D. Clarke (Univ. of Michigan), Sara A. Pozzi (Univ. of Michigan)
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