ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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!
Latest Magazine Issues
Oct 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
November 2025
Nuclear Technology
October 2025
Fusion Science and Technology
Latest News
NEA report calls for more accurate data on SNF heat decay
The OECD Nuclear Energy Agency has issued a report calling for more-detailed information on tracking the decay heat of spent nuclear fuel from light water reactors. According to the NEA, the report highlights the increasing importance of accurate decay heat estimations due to evolving fuel characteristics, including higher initial fuel enrichment, increased burn-up rates, and extended reactor cycle lengths.
The report, Summary of the NEA Assessment on Spent Nuclear Fuel Decay Heat for Light Water Reactors, summarizes the findings of a subgroup of the NEA’s Working Party on Nuclear Criticality Safety (WPNCS), which ran from January 2022 to January 2024.
Technical Session|Sponsored by NCSD|Cosponsored by FCWMD, RPD
Wednesday, June 19, 2024|8:00–9:45AM PDT|Jasmine G
Session Chair:
Kelsey Amundson
Session Organizer:
Alternate Chair:
Jesse Brown
To access paper attachments, you must be logged in and registered for the meeting.
Register NowLog In
Nuclear Data Needs for MCFR Reactors
8:00–8:20AM PDT
T. Cisneros (TerraPower), M. Wargon (TerraPower)
Paper
Design of Pre-Moderated Pulsed-Neutron Die-Away Experiments to Validate the Thermal Scattering Law of Beryllium
8:20–8:40AM PDT
Rida Rahman (Univ. Tennessee, Knoxville), Daniel Siefman (Univ. California, Berkeley), Ruby Araj (LLNL), Catherine Percher (LLNL), Vladimir Sobes (Univ. Tennessee, Knoxville)
Bayesian Inference Re-estimation of 9Be(α, n) Cross Sections by Using Neutron Spectra Measurements
8:40–9:00AM PDT
Sylvain Bertholon (CEA), Anis Ben-Yelles (CEA), David Bernard (CEA)
Review of Available Critical Experiments and Critical Experiments Facilities to Perform High-Assay Low-Enriched Uranium Fuel Transport Validation for Advanced Reactor Deployment
9:00–9:20AM PDT
M.N. Dupont (ORNL), K.L. Reed Fassino (ORNL), W.J. Marshall (ORNL), W.A. Metwally (ORNL), W.A. Wieselquist (ORNL)
A Methodology for Validating the Evolution of Start-up Neutron Sources
9:20–9:30AM PDT
Anis Ben-Yelles (CEA)
To join the conversation, you must be logged in and registered for the meeting.
