Technical Briefs

Erosion in Nuclear Piping Systems

[+] Author and Article Information
Harold M. Crockett

 EPRI, 1300 West W. T. Harris Boulevard, Charlotte, NC 28262hcrockett@epri.com

Jeffrey S. Horowitz

3331 Avenida Sierra, Escondido, CA 92029jshorowitz@aol.com

J. Pressure Vessel Technol 132(2), 024501 (Jan 29, 2010) (3 pages) doi:10.1115/1.4000509 History: Received November 30, 2007; Revised August 21, 2009; Published January 29, 2010; Online January 29, 2010

Various mechanisms degrade components and power piping in nuclear power plants. The mechanism with the greatest consequence has been flow-accelerated corrosion (FAC). FAC has caused ruptures and leaks and has led to numerous piping replacements. United States utilities use a combination of EPRI guidance, software, and aggressive inspection programs to deal with FAC. However, current technology does not detail guidance for erosive forms of attack including, cavitation erosion, flashing erosion, droplet impingement, and solid particle erosion. These forms of degradation have caused shutdowns, and leaks have become a maintenance issue. This brief will present a description of erosive damage mechanisms found in nuclear power plants.

Copyright © 2010 by American Society of Mechanical Engineers
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