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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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Fusion Science and Technology
August 2025
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Nuclear Dirigo
On April 22, 1959, Rear Admiral George J. King, superintendent of the Maine Maritime Academy, announced that following the completion of the 1960 training cruise, cadets would begin the study of nuclear engineering. Courses at that time included radiation physics, reactor control and instrumentation, reactor theory and engineering, thermodynamics, shielding, core design, reactor maintenance, and nuclear aspects.
N. Momoshima, S. Sugihara, T. Toyoshima, Y. Nagao, M. Takahashi, Y. Nakamura
Fusion Science and Technology | Volume 54 | Number 1 | July 2008 | Pages 293-296
Technical Paper | Environment and Safety | doi.org/10.13182/FST08-A1816
Articles are hosted by Taylor and Francis Online.
Tritium and major ion concentrations in rain were analyzed in Kumamoto, Japan between 2001 and 2006 to examine present tritium concentration and seasonal variation. The average tritium concentration was 0.36 ± 0.19 Bq/L (n=104) and higher tritium concentrations were observed in spring than the other seasons. Among the ions, non-sea-salt (nss) SO42- showed higher concentration in winter while other ions did not show marked increase in winter. Based on the back-trajectory analyses of air masses, the increase in tritium concentrations in spring arises from downward movement of naturally produced tritium from stratosphere to troposphere, while the increase of the nss-SO42- concentrations in winter is due to long range transport of pollutants from China to Japan.
