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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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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Constellation seeks rezone for property adjacent to Illinois plant
While no development details have been released, Constellation is asking to rezone 658.8 acres of land it owns around the Byron nuclear plant in Illinois for possible long-term use.
E. Martin Lopez (CEA/Grenoble INP), Y. Delannoy (Grenoble INP), F. Benoit, A. Muñoz Medina, R. Martinie (CEA)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 189-197
Electromagnetic Linear Induction Pumps (EMPs) are an important research subject in the development of Gen IV sodium-cooled fast reactors. Especially, in the framework of the French Alternative Energies and Atomic Energy Commission’s (CEA) R&D program on the Advanced Sodium Technological Reactor for Industrial Demonstration (ASTRID), the use of an EMP on the secondary loop has been proposed because of its safety advantages compared to mechanical pumps. For nuclear safety reasons, it is needed to know the behavior of an Annular Linear Induction Pump (ALIP) at off-design conditions. Consequently, the present article is focused on the study of stalling magnetohydrodynamic (MHD) phenomenon occurring at the transition from linear to non-linear branch of the performance curve at the maximum of pressure. This phenomenon is associated to a consequent decrease of the pump efficiency and takes place at large magnetic Reynolds number (Rm).
Using a theoretical analytical model, we calculated the coupled base flow and magnetic field. Results permit to identify the stalling appearance for values of the Global slip magnetic Reynolds number (Rms) greater than 1. However, the corresponding parameter associated to the occurrence of this phenomenon does not match with numerical 2D-axisymmetrical model and experimental results.
For this reason, we have developed a geometry-simplified numerical model closer to the theoretical one. This simplified model presents slight defects, compared to the theoretical one, for the Rms limit of stalling. Anyway, this result shows the importance of simulating the real geometry in order to obtain a good estimate of stalling appearance.
Finally, using this analysis we have implemented improvements for the 3D numerical model under development, whose principal goal is the study of MHD azimuthal instabilities in an ALIP.