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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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
Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
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.