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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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.
S. J. Altschuler, C. L. Schuske
Nuclear Technology | Volume 26 | Number 1 | May 1975 | Pages 23-34
Technical Paper | Chemical Processing | doi.org/10.13182/NT75-A24401
Articles are hosted by Taylor and Francis Online.
The storage of fissile solutions in tall cylinders neutronically isolated from each other by a moderating material, such as water or concrete, permits critically safe arrays that can be much more compact than arrays in air. Calculations show that up to ten times as many cylinders can be placed on a given floor area in such isolated arrays than in air-spaced arrays. However, this advantage must be weighed against the cost of construction and maintenance of moderated arrays. The water or concrete used as the isolating moderator also provide some personnel shielding against penetrating radiation.
