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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
Louis B. Freeman, Herbert C. Hecker
Nuclear Science and Engineering | Volume 80 | Number 2 | February 1982 | Pages 338-341
Technical Note | doi.org/10.13182/NSE82-A21437
Articles are hosted by Taylor and Francis Online.
In a thorium-fueled reactor, the conversion of 232Th to 233U involves the intermediate nuclide 233Pa. This isotope has a significant reactivity effect in any thorium reactor, especially one with an important epithermal flux component. The light water breeder reactor, operating in the Shippingport atomic power station, is a 233U-Th reactor with about half the power produced at energies above thermal. The reactivity effect of full-power equilibrium 233Pa has been inferred from critical position measurements and control element reactivity worths to be ∼2.5% Δρ in this reactor, confirming calculational predictions.
