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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.
Frederick A. Schumann
Nuclear Technology | Volume 19 | Number 3 | September 1973 | Pages 156-164
Technical Paper | Radioisotope | doi.org/10.13182/NT73-A15877
Articles are hosted by Taylor and Francis Online.
A fuel capsule vent system was developed and designed for the radioisotope thermoelectric generator (RTG) in support of the upcoming Viking mission to Mars. Helium is continuously produced within the fuel capsule as a result of isotopic decay. By venting the helium external to the RTG, the initial RTG fill gas is maintained for maximum thermal efficiency. This reduces degradation of thermoelectric converter performance and provides the maximum electrical power for the mission. The logic and analysis, which led to the selection of a closed helium storage system, were made.
