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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.
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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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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.
Auguste Zurkinden
Nuclear Technology | Volume 47 | Number 3 | March 1980 | Pages 494-495
Technical Note | Radioactive Waste | doi.org/10.13182/NT80-A32404
Articles are hosted by Taylor and Francis Online.
A general formulation of the boundary conditions for the commonly used radionuclide transport equation in the geosphere is shown. To evaluate the accuracy of a widely used approximation of the source boundary condition, considering convective flux alone and neglecting dispersive flux, both solutions for an idealized one-dimensional case are derived and compared. It is demonstrated then that the simpler boundary condition gives a good approximation for all cases with weak dispersion. This criterion is fulfilled for a wide range of parametric values, but the applicability of the simpler boundary condition always has to be checked.