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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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Deep Space: The new frontier of radiation controls
In commercial nuclear power, there has always been a deliberate tension between the regulator and the utility owner. The regulator fundamentally exists to protect the worker, and the utility, to make a profit. It is a win-win balance.
From the U.S. nuclear industry has emerged a brilliantly successful occupational nuclear safety record—largely the result of an ALARA (as low as reasonably achievable) process that has driven exposure rates down to what only a decade ago would have been considered unthinkable. In the U.S. nuclear industry, the system has accomplished an excellent, nearly seamless process that succeeds to the benefit of both employee and utility owner.
Hongyi Yang, Song Li, Zhiwei Zhou
Nuclear Science and Engineering | Volume 195 | Number 3 | March 2021 | Pages 271-278
Technical Paper | doi.org/10.1080/00295639.2020.1819137
Articles are hosted by Taylor and Francis Online.
This paper describes the use principle and application fields of vortex diodes. Unfortunately, all the published studies have not taken into account the restrictions on the coolant flow rate in the vortex diode when used in a nuclear reactor. The diodicity declined significantly due to the limitation of the average flow velocity in the throttle, which does not exceed 12 m/s, while a parallel arrangement of vortex diodes could increase the maximum flow rate through it. In this paper a parameter E that describes the effectiveness of the vortex diode is proposed and the related factors are studied. The work presented in this paper will be useful in offering a better understanding of flows in vortex diodes and provides guidance for optimizing the vortex diode in fast neutron reactors.
