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Conference Spotlight
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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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.
Leonard W. Gray
Nuclear Technology | Volume 40 | Number 2 | September 1978 | Pages 185-193
Technical Paper | Tutorial Materials/Design Interaction in Nuclear System / Chemical Processing | doi.org/10.13182/NT78-A26714
Articles are hosted by Taylor and Francis Online.
Hydrazine and ferrous sulfamate are used as reductants in a variety of nuclear fuel processing solutions. An oxidant, normally sodium nitrite, must frequently be added to these nitric acid solutions before additional processing can proceed. The interactions of these four chemicals have been studied under a wide variety of conditions using a 2P factorial experimental design. It was determined that the desired oxidations of Fe2+, , and NH2SO3H to Fe3+ and N2 occur at ambient temperatures with nitric acid concentrations ≤3M without complicating side reactions. The rate of oxidation of Fe2+ by nitrous acid proceeds at about the same rate as the scavenging of nitrous acid by sulfamic acid. At nitric acid concentrations >3M and at elevated temperatures, hydrolysis of sulfamic acid to NH4HSO4 and decomposition of both hydrazine and nitrous acid become important side reactions.
