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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.
David J. Wilson
Nuclear Technology | Volume 60 | Number 1 | January 1983 | Pages 155-163
Technical Note | Technique | doi.org/10.13182/NT83-A33112
Articles are hosted by Taylor and Francis Online.
Multigroup nuclear reactor codes were used to determine the effect of soil parameters on the thermal neutron flux at the detector of a neutron moisture meter. The parameters studied were the matrix density, neutron absorption and scattering cross sections, and the moisture content. The source-detector separation was also considered. Polynomial expressions, which were fitted to the variations in the neutron flux resulting from parameter changes, can be incorporated into a simple computer code and used to calculate the moisture content from an input of soil parameters and the detector count rate. This allows the rapid analysis of moisture meter data acquired in such highly variable soil systems as mine overburden heaps. Comparisons of the calculated and measured moisture contents of two different Australian soils are given.
