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Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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Latest News
BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
Kurt-Jürgen Vogt
Nuclear Technology | Volume 34 | Number 1 | June 1977 | Pages 43-57
Technical Paper | Reactor Siting | doi.org/10.13182/NT77-A31828
Articles are hosted by Taylor and Francis Online.
Environmental impact calculations for sources of nuclear and conventional pollutants are usually based on the Gaussian equation for turbulent diffusion of waste air plumes in the atmosphere. Consequently, diffusion experiments deal with the determination of the diffusion parameters (Gaussian standard deviations) for different meteorological, topographical, and release conditions. The concepts and methods for the investigation of the diffusion parameters, particularly of the favorable tracer techniques and materials, were reviewed. The most important test series and the resulting systems of diffusion parameters were analyzed, and the new results of the Jülich experiments were compared with the systems of Pasquill, Klug, Brookhaven, and St. Louis. The comparison of the short- and long-time diffusion factors indicates that for the improvement of the diffusion calculations the underlying set of diffusion parameters has to be carefully selected considering the release height of the pollutants and the surface roughness of the local environment.