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On the Factors Affecting the Fretting-Wear Risk of PWR Fuel Assemblies

[+] Author Affiliations
Pablo R. Rubiolo

Westinghouse Electric Company, LLC, Pittsburgh, PA

Michael Y. Young

Westinghouse Electric Company, LLC, Columbia, SC

Paper No. ICONE14-89490, pp. 203-210; 8 pages
doi:10.1115/ICONE14-89490
From:
  • 14th International Conference on Nuclear Engineering
  • Volume 3: Structural Integrity; Nuclear Engineering Advances; Next Generation Systems; Near Term Deployment and Promotion of Nuclear Energy
  • Miami, Florida, USA, July 17–20, 2006
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-4244-4 | eISBN: 0-7918-3783-1
  • Copyright © 2006 by ASME

abstract

An analysis of the factors affecting the fretting-wear risk of fuel assemblies operated in Pressurized Water Reactors (PWR) is presented. In this work the effect of rod-to-grid gap size, spring relaxation, assembly grids misalignments, rod structural damping and stiffness, and friction coefficients are investigated by performing Monte Carlo simulations with a non-linear vibration model of the fuel rod. The goal of the study is to identify key factors that have to be included in the assessment of the fretting-wear performance of core fuel assemblies.

Copyright © 2006 by ASME

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