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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.
R. E. Nightingale and E. M. Woodruff
Nuclear Science and Engineering | Volume 19 | Number 4 | August 1964 | Pages 390-392
Technical Paper | doi.org/10.13182/NSE64-A18993
Articles are hosted by Taylor and Francis Online.
The radiation-induced contraction of large graphite bars irradiated at high temperatures is approximately twice that of the small cylindrical samples that are conventionally studied. Although the reasons for this are not clear, the effect appears to be associated with variations in anisotropy within the large bars. These results suggest that methods of monitoring distortion of graphite-moderated reactors by use of small samples be reviewed and the data examined for information on possible explanations of this effect.
