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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.
Technical Session|Fission Surface Power/Nuclear Electric Propulsion
Wednesday, May 8, 2024|3:15–4:55PM MDT|Sweeney B
Session Chair:
Mikaela Blood (Lockheed Martin)
Alternate Chair:
Session Organizer:
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RANS-CFD Simulation of Cryogenic Tank Depressurization by Jet Induced Mixing
3:15–3:40PM MDT
Eymon Lan (Rensselaer Polytechnic Institute), Shanbin Shi (Rensselaer Polytechnic Institute)
Paper
Tolerance Stacks in the Methods, Solvers and User Applications of Analytical Techniques for Small Reactors
3:40–4:05PM MDT
Herschel P. Smith (BWX Technologies, Inc.)
Monte Carlo-Based Shield Mass Modeling for a Reference NEP Reactor
4:05–4:30PM MDT
Alexander Foutch (Missouri Univ. Science and Technology), Reed Herner (Analytical Mechanics Assoc.), Corey Smith (Analytical Mechanics Assoc.)
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