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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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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.
J. H. DeVan, C. E. Sessions
Nuclear Technology | Volume 3 | Number 2 | February 1967 | Pages 102-109
Technical Paper and Note | doi.org/10.13182/NT67-A27807
Articles are hosted by Taylor and Francis Online.
Mass transfer rates of Nb-1%Zr and D-43 (Nb-10%W-1%Zr-0.1%C) in high-temperature lithium were determined in thermal convection loops of each alloy. The loops circulated lithium for 3000h at a 1200°C maximum temperature and a 100 to 150°C ΔT. Weight change data were obtained from 58 insert specimens placed end-to-end around each loop. The oxygen content of both alloys decreased during test. Zirconium and nitrogen were transferred by the lithium from the higher-temperature to the lower-temperature loop surfaces. The extent of this mass transfer was greater in the Nb-1%Zr test and resulted in a light zirconium-nitride mass transfer deposit on the cold-leg surfaces of this alloy. Specimens at equivalent temperatures in the heater and cooler regions showed the same weight change indicating no appreciable downstream effect due to concentration changes in the lithium. Given the same absolute concentration driving force, the rate of deposition was measurably greater than the rate of dissolution; accordingly, dissolution occurred over two-thirds of the loop surfaces and deposition over the remaining one-third. An analysis of the mass transfer results for these two loops based on the assumption of a simple dissolution model showed the change in solute concentration of the lithium around the loop to be only a few parts per billion.