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 RPD
Wednesday, November 20, 2024|8:00–9:45AM EST|Biscayne 1
Session Chair:
Shane G. Stimpson (BWX Technologies)
Alternate Chair:
John Bess (JFoster and Assoc.)
Session Organizer:
Zeyun Wu (Virginia Commonwealth Univ.)
To access paper attachments, you must be logged in and registered for the meeting.
Register NowLog In
Development of the ENDF/B-VII.1 and VIII.0 AMPX 61- and 258-Group Libraries for SCALE 7.0/Polaris LWR Analysis
8:00–8:20AM EST
Kang Seog Kim (ORNL), Dorothea Wiarda (ORNL), Byoung-Kyu Jeon (ORNL), William A. Wieselquist (ORNL)
Paper
Development of an Advanced Cross-Section Model Including Control Rod Depletion
8:20–8:40AM EST
Jinsu Park (Ulsan Nat'l Institute Science and Technology), Wisoo Jeong (KEPCO Nuclear Fuel), Changhyun Lim (KEPCO Nuclear Fuel), Deokjung Lee (Ulsan Nat'l Institute Science and Technology)
Error Propagation Analysis, from LWR Assemblies to Plants, Using SCALE/Polaris-PARCS with the ENDF/B-VII.1 and VIII.0 AMPX 56-Group Libraries
8:40–9:00AM EST
Kang Seog Kim (ORNL), William A. Wieselquist (ORNL)
To join the conversation, you must be logged in and registered for the meeting.
