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2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
Latest News
Japan gets new U for enrichment as global power and fuel plans grow
President Trump is in Japan today, with a visit with new Prime Minister Sanae Takaichi on the agenda. Takaichi, who took office just last week as Japan’s first female prime minister, has already spoken in favor of nuclear energy and of accelerating the restart of Japan’s long-shuttered power reactors, as Reuters and others have reported. Much of the uranium to power those reactors will be enriched at Japan’s lone enrichment facility—part of Japan Nuclear Fuel Ltd.’s Rokkasho fuel complex—which accepted its first delivery of fresh uranium hexafluoride (UF₆) in 11 years earlier this month.
L. A. Bernstein, A. N. Perevezentsev, L. A. Rivkis, A. A. Semenov, B. V. Safronov, A. P. Chukanov, E. V. Polianczyk, G. B. Manelis, S. V. Glazov, I. A. Revelsky, E. S. Brodsky, E. N. Kapinus
Fusion Science and Technology | Volume 58 | Number 2 | October 2010 | Pages 625-657
Technical Paper | doi.org/10.13182/FST10-A10889
Articles are hosted by Taylor and Francis Online.
Maintenance of the Joint European Torus (JET) reactor led to generation of soft housekeeping materials contaminated with tritium and comprising various polymeric materials. Some of the wastes fall into the category of intermediate-level waste and require processing to reduce the volume and/or change the category to low-level waste. Plasma arc centrifuge (PAC) combustion and countercurrent regime of gasification have been studied as candidates for a future waste treatment facility for JET tritium-contaminated wastes. This study was carried out for JET wastes that did not contain tritium. Mass reduction factors from 8 to 46 and from 35 to 143 for countercurrent regime of gasification and PAC combustion, respectively, have been demonstrated to be dependent on waste composition. Volume reduction factors from 20 to 100 and from 95 to 400 for countercurrent regime of gasification and PAC combustion, respectively, have been also estimated to be dependent on waste composition. The wastes and combustion products including chlorine-containing combustion products have been characterized using standard procedures and various analytical procedures developed for this study. The formation of water as a secondary waste was estimated for countercurrent regime of gasification, which was important for the ultimate processing of tritium-contaminated wastes.
