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Fusion Science and Technology
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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.
Masahiko Utsuro, Mitsuo Nakai, Hideki Kohri, Takeshi Ohta, Takumi Konno, Asako Igashira, Mamoru Fujiwara
Fusion Science and Technology | Volume 78 | Number 7 | October 2022 | Pages 513-527
Technical Paper | doi.org/10.1080/15361055.2022.2062098
Articles are hosted by Taylor and Francis Online.
A test experiment to polarize tritium nuclei to develop a polarized deuterium-tritium (D-T) laser fusion concept is proposed in which a ferromagnetic complex with a high internal magnetic field is used to polarize tritium nuclei on physisorbed D-T molecules with an internal β-decay heat load in a D-T target. Heteronuclear hydrogen deuteride (HD) is used to conduct the measurements herein instead of as in typical D-T–based experiments. As proof-of-concept experimentation, the adsorption and desorption characteristics of HD are examined on Prussian blue ferromagnetic analogue Ni3[Fe(CN)6]2 at temperatures of 77 K and around 23 K. Nuclear magnetic resonance (NMR) analysis of the ferromagnetic complex-mediated adsorption of HD onto activated carbon pellets at 10 K is conducted step by step using a multilocular probe cell that had been simplified to give a single-tube probe cell. The resulting 1H NMR spectra are compared with 19F NMR spectra obtained for reference on a Kel-F probe cell wall. Slight differences between the calculated NMR frequency from the gyromagnetic ratio and the actually observed NMR frequency are also discussed.
