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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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August 2024
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Latest News
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.
Ignazio Beghi, Sabrina Tietze, Terttaliisa Lind (PSI), Horst-Michael Prasser (ETH Zürich)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 302-309
Wet scrubbers are commonly used in Filtered Containment Venting Systems (FCVS) due to their high collection efficiency for aerosol particles, and due to the possibility of simultaneously retaining gas phase species, such as elemental iodine (I2) and organic iodides (e.g. methyl iodide). Whereas proven to be efficient for aerosol particle retention, gas phase elemental iodine and organic iodide retention in wet scrubbers is limited due to several factors. In this investigation, the retention of elemental iodine in a wet scrubber was determined in a small-scale experimental facility. To investigate the effect of pool hydrodynamics on the elemental iodine retention, the flow rate was varied, resulting in different flow regimes. In addition, the gas residence time in the scrubber was varied by changing the water level in the facility. As the added chemicals had an effect on the hydrodynamic behavior of the scrubber, the tests were always carried out with the relevant wet scrubber chemicals. Tests were carried out at different flow regimes, i.e., bubbly and churn-turbulent flow, to determine the effect on iodine retention. Iodine retention close to the injection orifice, in the „injection zone“, was studied separately from the „bubble rise zone“. The experimental results were compared with existing pool scrubbing codes.