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Conference Spotlight
2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
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FPoliSolutions demonstrates RISE, an RIPB systems engineering tool
The American Nuclear Society’s Risk-informed, Performance-based Principles and Policy Committee (RP3C) has held another presentation in its monthly Community of Practice (CoP) series. Former RP3C chair N. Prasad Kadambi opened the October 3 meeting with brief introductory remarks about the RP3C and the need for new approaches to nuclear design that go beyond conventional and deterministic methods. He then welcomed this month’s speakers: Mike Mankosa, a project engineer at FPoliSolutions, and Cesare Frepoli, the company’s president, who together presented “Introduction to RISE: A Digital Framework for Maintaining a Risk-Informed Safety Case for Current and Next Generation Nuclear Power Plants.”
Watch the full webinar here.
A. Isaev, J. Felbinger, C. Evrim, R. Kulenovic, E. Laurien (Univ of Stuttgart)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 325-334
Turbulent and stratified mixing flows can cause thermal fatigue in nuclear power plant piping systems. In order to diminish the investigation effort of thermal mixing flow phenomena, a geometrically similar isothermal Mixed Fluid Interaction (MFI) mixing tee using a sodium chloride solution to model the cold heavy branch pipe fluid is built. The purpose of the MFI experiments is to predict the flow phenomena in the vertical thermal mixing Fluid Structure Interaction (FSI) T-junction configuration at the University of Stuttgart. Due to limited optical accessibility of the FSI facility a numerical similarity comparison of the flow phenomena occurring in both experimental setups (MFI/FSI) is essential. Thus, Large Eddy Simulations are carried out which are experimentally validated by applying the Particle Image Velocimetry and Planar Laser Induced Fluorescence measurement techniques and as well as benchmark data. The similarity investigation confirms the usage of three characterizing parameters for the adaption of relevant physical boundary conditions to the FSI setup (branch pipe Reynolds number (??????), mixing Richardson number (????) and momentum ratio (????)). Thereby, the evidenced similarity ensures the utilization of the cold mixing experimental setup for the visual prediction of flow patterns occurring in the hot mixing FSI facility.