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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.
M. A. Schultz, Wayne F. Eckley
Nuclear Technology | Volume 10 | Number 3 | March 1971 | Pages 380-390
Technical Paper | Education | doi.org/10.13182/NT71-A30971
Articles are hosted by Taylor and Francis Online.
In teaching the theory and operation of a pressurized water reactor (PWR), a method is developed which makes use of an analog computer primary-loop simulation; however, the secondary loop consists of a real steam turbine-generator set. The analog is fitted with a reactor kinetics network and a transport delay unit with memory capacitors. Potentiometer settings at the analog originate at the real turbine as temperatures and pressures of the saturated steam at. 215 psia. Students consult steam tables, Mollier charts, etc. to obtain correct values for points at the interface, secondary side of the heat exchanger. The “pinch point” concept of heat transfer is used to transfer data across the heat exchanger to the primary loop. The proper potentiometer settings at the analog result from this pinch point and the design criteria for half-load or full-load operating condition existing at the turbine. Two dynamic variations are made from the “steady-statec” half-load run. One of these is a “sudden” throttle opening at the turbine; the other is a “step” reactivity insertion made at the reactor (analog). Students make adjustments for the revised settings in both loops. The educational benefits resulting from this “50% simulate + 50% real turbine” method of instruction have proved to be very meaningful to students as well as gratifying to the instructor.