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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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Getting back to yes: A local perspective on decommissioning, restart, and responsibility
For 45 years, Duane Arnold Energy Center operated in Linn County, Ia., near the town of Palo and just northwest of Cedar Rapids. The facility, owned by NextEra Energy, was the only nuclear power plant in the state.
In August 2020, a historic derecho swept across eastern Iowa with winds approaching 140 miles per hour. Damage to the plant’s cooling towers accelerated a shutdown that had already been planned, and the facility entered decommissioning soon after, with its fuel removed in October of that year. Iowa’s only nuclear plant had gone off line.
Today the national energy landscape looks very different than it did just six short years ago. Electricity demand is rising rapidly as data centers, artificial intelligence infrastructure, advanced manufacturing, and electrification expand across the country. Reliable, carbon-free baseload power has become increasingly valuable. In that context, Linn County has approved the rezoning necessary to support the recommissioning and restart of Duane Arnold and is actively supporting NextEra’s efforts to secure the remaining state and federal approvals.
International High-Level Radioactive Waste Management Conference
Technical Session
Monday, November 14, 2022|1:00–2:45PM MST|Lantana
Session Chair:
Seth King (Sandia)
Alternate Chair:
Chris Camphouse (Sandia)
Session Organizer:
Emily R. Stein
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Advances in Sensitivity Analysis for Repository Performance Assessment: Examples from the International JOSA Exercise
1:00–1:20PM MST
Dirk-Alexander Becker (GRS), Sabine M. Spiessl (GRS)
Paper
A Comparison of Uncertainty Quantification Methods for Modelling Radionuclide Transport in Nuclear Waste Disposal Systems
1:20–1:40PM MST
Merle Bjorge (Bundesgesellschaft für Endlagerung), Aqeel Afzal Chaudhry (Technische Universität Bergakademie Freiberg), Wolfram Rühaak (Bundesgesellschaft für Endlagerung), Thomas Nagel (Technische Universität Bergakademie Freiberg)
Multimodel Methods for Uncertainty Quantification of Repository Systems
1:40–2:00PM MST
Teresa Portone (Sandia), Michael Eldred (Sandia), Gianluca Geraci (Sandia), Laura Swiler (Sandia)
Beyond Kd: Next Generation Performance Assessment Framework Through Machine Learning
2:00–2:20PM MST
Haruko Wainwright (MIT), Elliot Chang (LLNL), Dinara Ermakova (Univ. California, Berkeley), Hannah Lu (Stanford Univ.), Linda Beverly (California State Univ., East Bay), Michael Nole (Sandia), Mavrik Zavarin (LLNL), Omotayo Omosebi (LBNL), Liange Zheng (LBNL)
Natural Analogue Studies in Support of Post-Closure Safety Assessment of Deep Geological Disposal
2:20–2:40PM MST
Zhenze Li (CNSC), Thanh Son Nguyen (CNSC), Matthew Herod (CNSC), Julie Brown (CNSC), Hamed Mozafarishamsi (Univ. Ottawa), Ian Clark (Univ. Ottawa)
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