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Division Spotlight
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.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
Lightbridge announces first U-Zr fuel rod samples extruded at INL
Lightbridge Corporation announced today that it has reached “a critical milestone” in the development of its extruded solid fuel technology. Coupon samples using an alloy of zirconium and depleted uranium—not the high-assay low-enriched uranium (HALEU) that Lightbridge plans to use to manufacture its fuel for the commercial market—were extruded at Idaho National Laboratory’s Materials and Fuels Complex.
Stojan Petelin, Borut Mavko, Bostjan Koncar, Yassin A. Hassan
Nuclear Technology | Volume 158 | Number 1 | April 2007 | Pages 56-68
Technical Paper | Best Estimate Methods | doi.org/10.13182/NT07-A3824
Articles are hosted by Taylor and Francis Online.
This paper provides a scaling methodology that was applied for scaling of the BETHSY integral test facility to the real nuclear power plant (NPP). The similarity of physical phenomena between the BETHSY experimental facility and the scaled-up model (representation of the real NPP) was analyzed on the small-break loss-of-coolant accident (SBLOCA) scenario. A comprehensive numerical analysis using the RELAP5 thermal-hydraulic code was performed to evaluate the optimal scaling-up of the BETHSY facility to the real NPP. In order to investigate the phenomenological scaling-up basis, two enlarged RELAP5 input models were constructed, differing in scaling criteria for the primary cooling system: proportional volume scaling and scaling based on the Froude number. A better agreement with the physical phenomena of the SBLOCA experiment was achieved in the case of proportional volume scaling. In addition, scaling of heat structures was also analyzed. It was shown that the best predictions of the transient phenomena were obtained when the heat structures were scaled according to the tensile stress criterion.