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Division Spotlight
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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Fusion Science and Technology
Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
Koji Oishi, Yujiro Ikeda, Chikara Konno, Tomoo Nakamura
Fusion Science and Technology | Volume 18 | Number 2 | September 1990 | Pages 291-309
Technical Paper | Shielding | doi.org/10.13182/FST90-A29301
Articles are hosted by Taylor and Francis Online.
The principal components of concrete were irradiated by 14-MeV neutrons for measurement of their induced activities to verify the activation calculation code THIDA-2 and its related cross-section library CROSSLIB. The observed radioactive nuclides, whose half-lives range from minutes to years, were 28Al, 29Al, 27Mg, 44K, 41Ar, 56Mn, 42K, 24Na, 43K, 48Sc, 47Sc, 47Ca, 46Sc, 54Mn, and 22Na, Experimental and calculated results were compared. Good agreement was obtained within ±20%, for 28Al, 56Mn, 42K, 24Na, 48Sc, 47Ca, 46Sc, and 54Mn with well-estimated production cross sections. Large differences were also observed, however, ranging in value from −50 to +100%, for the other nuclides. The cross-section values near 14 MeV for these nuclides were replaced with the cross-section data measured at the Fusion Neutronics Source at the Japan Atomic Energy Research Institute. Recalculation was performed using the newly estimated group cross sections derived from these data, and agreement between experiment and calculation was improved to within ±20%. From this experimental study, it was proved that the uncertainties of the activation cross-section values could satisfactorily explain the discrepancies of the induced activity calculation.
