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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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Nuclear Science and Engineering
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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.
Technical Session|Sponsored by FCWMD
Wednesday, June 18, 2025|8:00–9:45AM CDT|Chicago Ballroom C
Session Chair:
Michael S. Smith
Session Organizer:
Alternate Chair:
Jared A. Johnson
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MOOSE-Based Application for Performance Assessment of Nuclear Waste Geologic Disposal
8:00–8:20AM CDT
Ahmed G. Almetwally (Univ. Texas, Austin), Mary F. Wheeler (Univ. Texas, Austin), Rodrigo de Oliveira (INL)
Paper
Benefits of Adapting Micro-reactors to a Continuous Recycle Fuel Cycle
8:20–8:40AM CDT
Venkata S. Vallabhaneni (University of Tennesee Knoxville), Donald Doyle (University of Tennesee Knoxville), Jason Trelewicz (Stony Brook Univ.), Nicholas R. Brown (Univ. Tennessee, Knoxville)
Python-based Reload Optimization Framework for SIMULATE-3 with Mlrose
8:40–9:00AM CDT
James W. Carnal (Univ. Tennessee, Knoxville), Noah Marks (The University of Tennessee, Knoxville), Ivan Maldonado (The University of Tennessee, Knoxville)
Theoretical Insight Into Non-Ideal Dialkyl Phosphorus Acid Solvent Extraction Behavior
9:00–9:20AM CDT
Thomas Mallos (Colorado School of Mines), Vyacheslav S. Bryantsev (ORNL), Mark P. Jensen (Colorado School of Mines)
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