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Conference Spotlight
2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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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.
M. Tomlinson, R. R. Tymko, Donna Wuschke
Nuclear Science and Engineering | Volume 30 | Number 1 | October 1967 | Pages 14-19
Technical Paper | doi.org/10.13182/NSE67-A17238
Articles are hosted by Taylor and Francis Online.
The hydrogenated terphenyl mixture HB-40 which is in use as a reactor organic coolant, has been irradiated at 350°C with 1.5-MeV electrons. Changes in composition and properties are reported. Decomposition proceeded at half the rate per unit dose observed previously during reactor irradiations where 62% of the absorbed energy was due to fast neutrons. This indicates a dependence of hydroterphenyl radiolysis on Linear Energy Transfer, whereby recoil protons produce 3.2 ± 0.6 times as much decomposition as electrons. Some differences between the physical properties of electron-irradiated material and the properties of reactor-irradiated material were noted.
