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Division Spotlight
Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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.
Lloyd B. Thomas, Sudarshan K. Loyalka
Nuclear Technology | Volume 57 | Number 2 | May 1982 | Pages 213-219
Technical Paper | Nuclear Fuel | doi.org/10.13182/NT82-A26283
Articles are hosted by Taylor and Francis Online.
Estimation of gap conductance in nuclear reactor fuel rods requires values for thermal accommodation coefficients of several gases on Zircaloy, uranium-dioxide, stainless steel, and other surfaces. These values for Zircaloy-2 have now been obtained by observing cooling rates of a Zircaloy sphere suspended in the several gases. These measurements are on so-called engineering surfaces, and no special attempt other than baking under high vacuum pumping was used to clean the surfaces. It is found, however, that if the recent kinetic theory results of Cercignani and Pagani on heat transfer from a sphere are used, then quite constant values for accommodation coefficients on a range of pressures are obtained.