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Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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. A. Shields, Jr.
Nuclear Technology | Volume 52 | Number 2 | February 1981 | Pages 214-227
Technical Paper | Nuclear Fuel | doi.org/10.13182/NT81-A32666
Articles are hosted by Taylor and Francis Online.
A series of investigations was performed to identify the mechanisms responsible for severe fuel handling difficulties in the Experimental Breeder Reactor II. A combination of swelling-induced bow of inner row reflectors and relaxed thermal bow of outer row reflectors was found to be responsible for the observed problems. Substantial thermal bowing arose from the existence of reverse temperature gradients in the outer regions of the reflector, which were caused by the presence of high-temperature high-burnup uranium blanket subassemblies at the reflector-blanket interface. Subassembly rotation was found to be a successful strategy to alleviate swelling bow, but not relaxed thermal bow. Long-term trends of change in reactivity parameters were correlated with the development of the observed bowing distribution. This experience indicates that large fast breeder reactors, with core assemblies that have long residence times and that operate for long periods of time between fuel handling, must be designed with care to avoid complications due to subassembly bowing.