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.
International High-Level Radioactive Waste Management Conference
Technical Session
Tuesday, November 15, 2022|10:00–11:45AM MST|Noble
Session Chair:
Michael Nole (Sandia)
Alternate Chair:
Chven Mitchell (Sandia)
Session Organizer:
Emily R. Stein
To access paper attachments, you must be logged in and registered for the meeting.
Register NowLog In
Impact of Inventory Changes on the Waste Isolation Pilot Plant Performance Assessment
10:00–10:20AM MST
Seth King (Sandia), James Bethune (Sandia), Sarah Brunell (Sandia), Dwayne Kicker (Sandia), Sungtae Kim (Sandia)
Paper
Moving from 2D to 3D Flow Modeling for the Waste Isolation Pilot Plant Performance Assessment
10:20–10:40AM MST
Tara LaForce (Sandia), Seth King (Sandia), Heeho Park (Sandia)
A Next-Generation Transport Simulator for the Waste Isolation Pilot Plant (WIPP) Performance Assessment
10:40–11:00AM MST
Jennifer M. Frederick (Sandia), Michael A. Nole (Sandia), Heeho Park (Sandia)
Modeling Geologic Waste Repository Systems Below Residual Saturation
11:00–11:20AM MST
Matthew Paul (Sandia), Heeho Park (Sandia), Michael Nole (Sandia)
Newton Trust Region Methods for Nuclear Waste Repository Porous Media Flow Simulations
11:20–11:40AM MST
Heeho Park (Sandia)
To join the conversation, you must be logged in and registered for the meeting.
