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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.
Hsiang-Shou Cheng, David J. Diamond
Nuclear Technology | Volume 45 | Number 1 | August 1979 | Pages 46-53
Technical Paper | Reactor | doi.org/10.13182/NT79-A32284
Articles are hosted by Taylor and Francis Online.
The response of boiling water reactor in-core detectors undergoing vibration has been calculated. A neutronic model based on calculating the fission activity at a detector position in a planar multibundle environment was employed. The model used eight energy groups and two-dimensional Cartesian geometry in a discrete-ordinates transport approximation. The in-core detector responses due to various detector displacements were calculated as a function of channel box corner wear with different effective in-channel voids, bypass voids, and instrument tube voids. The calculated noise was found to have a linear dependence on channel box wear. This was corroborated by measurements. An increase in in-channel voids was found to increase the noise, while an increase in bypass and instrument tube voids decreased the noise. The presence of a nearby control blade increased the noise.
