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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.
Yanhua Zheng, Hanliang Bo, Duo Dong
Nuclear Technology | Volume 153 | Number 2 | February 2006 | Pages 234-239
Technical Note | Thermal Hydraulics | doi.org/10.13182/NT06-A3703
Articles are hosted by Taylor and Francis Online.
As a new type of control rod driving system, the hydraulic control rod driving system (HCRDS) has long been applied in a 5-MW nuclear heating reactor, and the safety and the reliability of the system have been proven. The principle of the work and the step-up operation of the HCRDS have been introduced in this paper. Based on the theoretical model, the temperature influence on the static holding-flow rate, the dynamic holding-flow rate, and the working holding-flow rate has been studied. It indicates that with the increase of the temperature, the static and dynamic holding-flow rates will increase while the working holding-flow rate will decrease.A detailed analysis of the step-up process on various temperature conditions has been carried out. Considering the great temperature influence on the step-up operation of the system, the method of temperature compensation to select suitable delay time and working holding-flow rate in a certain temperature province is put forward to offset the influence. The analysis can be conducive to widespread availability of the HCRDS and establish a basis for further research and improvement.