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Quantifying Erosion-Corrosion Impacts on Light Water Reactor Piping

  • C. E. Guzmán-LeongEmail author
  • J. W. Cluever
  • S. R. Gosselin
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Solid particle-induced wall thinning of water-cooled nuclear power plant components is an established degradation mechanism that can affect the long term management of plant operations and component reliability. This form of material degradation is identified as erosion-corrosion and is comprised of mechanical removal known as erosion, chemical removal or corrosion, and the enhanced degradation resulting from the combined action of erosion and corrosion known as synergistic wear. Erosion-corrosion’s complicated analysis involves many factors such as fluid velocity, particle size, concentration and shape, pH, and temperature amongst several others. Erosion-corrosion is observed in heat exchanger tubing exposed to raw water (water from ponds, rivers, bays, and lakes), and steam generator blowdown piping. However, quantifying the impact of solid and liquid mixtures on light water reactor component reliability has proven to be difficult, and often underestimated. This paper describes a physics-based and probabilistic erosion model for estimating average wall thinning rates and age-dependent probabilities of exceeding user-defined wall thicknesses.

Keywords

Erosion-corrosion Particle-induced erosion Particle impact-induced wear Synergy Mechanical removal Component reliability Probabilistic modeling Material degradation Wall-thinning 

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • C. E. Guzmán-Leong
    • 1
    Email author
  • J. W. Cluever
    • 1
  • S. R. Gosselin
    • 1
  1. 1.LPI, IncRichlandUSA

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