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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!
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Nuclear Science and Engineering
November 2025
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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|Methods
Monday, April 22, 2024|3:30–5:15PM PDT|Franciscan C
Session Chair:
Go Chiba
Session Organizer:
Alternate Chair:
Marco Tiberga (EDF)
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Developing a Deterministic Calculation Scheme for Perturbations of In-Core Instrumentation of an MTR-Core in Support to Bayesian Calibration
3:30–3:50PM PDT
S. Lapaire (CEA), T. Bonaccorsi (CEA), J.-M. Palau (CEA)
Paper
Impact of Integral Experiments Choice for a GLLSM Data Assimilation Process: Application to Spent Fuel Pool Storage
3:50–4:10PM PDT
Romain Bossoutrot (IRSN), Frédéric Fernex (CEA), Julien Taforeau (IRSN)
Presented by Franck Bernard (IRSN)
Results of the CAMIVVER V&V Campaign of the NEMESI Multi-Parameter Library Generator Prototype Based on APOLLO3®
4:10–4:30PM PDT
M. Tiberga (EDF), B. Vezzoni (Framatome), A. Willien (EDF), A. Brighenti (Framatome), G. Huaccho Zavala (Karlsruhe Institute for Technology), N. Guler (EDF), P. Laurent (EDF), L. Mercatali (Karlsruhe Institute for Technology), P. Mosca (CEA)
Demonstration of Uncertainty Reduction for Generic Pebble-Bed Fluoride-Salt-Cooled High Temperature Reactor (gFHR)
4:30–4:50PM PDT
Noah A.W. Walton (Univ. Tennessee, Knoxville), Nader Satvat (Kairos Power), Vladimir Sobes (Univ. Tennessee, Knoxville)
Presented by Nicholas Branam (Univ. Tennessee, Knoxville)
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