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Division Spotlight
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
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.
Joonhong Ahn, Atsuyuki Suzuki, Ryohei Kiyose
Nuclear Technology | Volume 64 | Number 2 | February 1984 | Pages 154-165
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT84-A33338
Articles are hosted by Taylor and Francis Online.
A computational analysis of nuclide migration through fissured geological formations was performed. The migration behavior can be described by convective transport in the fissures, diffusive transport with radioactive decay chain in the bulk rock, and sorption on the fissure wall. The mathematical model employed is based on the finite element method (FEM) solution of transport equations, taking into account the interfissure two-dimensional diffusion. The decay chain, 234U → 230Th → 226Ra, was examined to illustrate the migration behavior. The FEM solution was in good agreement with the analytical solution using simpler assumptions. Numerically investigated were the effects of (a) the decay chain in pores, (b) two-dimensional diffusion in pores, (c) the axial dispersion in fissures, (d) the interaction between fissures, and (e) the fissure wall sorption. As a result, it can be said that the effect of the decay chain in pores is especially important in order not to have overestimates in terms of safety and that the fissure wall sorption is an important factor for realistic estimates because it has a remarkable effect on the extent of nuclide confinement within the geological media.