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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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Integrating Waste Management for Advanced Reactors: The Universal Canister System and Project UPWARDS
When the Department of Energy’s Advanced Research Projects Agency–Energy launched the Optimizing Nuclear Waste and Advanced Reactor Disposal Systems (ONWARDS) program in 2022, it posed a challenge that the nuclear industry had never seriously confronted before: how to design waste management solutions that anticipate the coming shift to advanced reactors and not merely retrofit existing systems built for an older generation of technology. The program’s objectives were ambitious—reduce disposal footprint, enable scalable pathways for unfamiliar waste streams, and build the technical foundations for future disposal—yet also tightly grounded in the realities of emerging nuclear fuel cycles. For the nuclear community, this was a timely call. Advanced reactors were accelerating toward deployment, but the waste management systems needed to support them had not kept pace.
Technical Session|Advanced Reactors
Tuesday, July 22, 2025|4:05–5:45PM EDT|Palm Room
Session Chair:
Steve E. Skutnik
Alternate Chair:
Joe Fuel
Session Organizer:
Scott P. Palmtag
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MARIE: A Python-Based Framework for Comprehensive Fuel Recycling Modeling
4:05–4:30PM EDT
Steve E. Skutnik (ORNL), Randy Ngelale (ORNL), Laura Arias Chavez (ORNL), Robert A. Lefebvre (ORNL), Jin Whan Bae (ORNL), Brianna Hiscox (ORNL), Leigh Martin (ORNL), Andrew Worrall (ORNL)
Paper
MOX and UOx Fuel Multi Recycling in Pressurized Water Reactors
4:30–4:55PM EDT
Hervé Billat (EDF), Enrico Girardi (EDF R&D), Francois-Xavier de Cordoue (EDF), Loic Pussard (EDF), Guillaume Vaast (EDF), Badiaa Amekraz (Framatome)
Selective Conversion of Transuranic Oxides to Species Soluble in Molten Chloride Salt - Validation of the First Stage of the WATSS Recycling Process
4:55–5:20PM EDT
J. P. Zuniga (Moltex Energy), I. Scott (Moltex Energy), O. Gregoire (Moltex Energy), A. D. Warren (Moltex Energy), R. Brown (Moltex Energy), G. Cota-Sanchez (Canadian Nuclear Laboratory), L. Bradford (Canadian Nuclear Laboratory), D. Cluff (Canadian Nuclear Laboratory), K. Kovack (Canadian Nuclear Laboratory), D. Poff (Canadian Nuclear Laboratory), R. O'Sullivan (Moltex Energy)
Modeling a Thermal-Spectrum LEU-fueled Molten Salt Reactor Co-fueled with Thorium in SCALE 6.3.1 and Serpent-2
5:20–5:45PM EDT
C. Erika Moss (Univ. Tennessee, Knoxville), Ondrej Chvala (Univ. Tennessee, Knoxville), Donny Hartanto (ORNL), John P. Carter (INL)
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