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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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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.
R. B. Bennett, W. M. Stacey, Jr.
Nuclear Science and Engineering | Volume 88 | Number 4 | December 1984 | Pages 475-485
Technical Paper | doi.org/10.13182/NSE84-A18366
Articles are hosted by Taylor and Francis Online.
A theory for the effect of directed neutral beam injection (NBI) on impurity transport in tokamaks is extended to include temperature gradient effects. The extended theory is compared with experimental data from the Princeton Large Torus, and certain coefficients are adjusted to provide agreement. The adjusted theory is applied to assess the potential of NBI being used to prevent impurities from penetrating to the center of future tokamak plasmas, thereby possibly creating a cold radiating edge. The results indicate the possibility of creating a cold radiating edge in the tokamak fusion test reactor and in future tokamaks represented by the fusion engineering device and STARFIRE.
