Weld Overlays in the Nuclear Industry
Weld overlays have been used to remedy intergranular stress corrosion cracking (IGSCC) in BWRs since the 1980s. Overlays have also been recently applied in PWRs where primary water stress corrosion cracking (PWSCC) has developed. This SI Webinar offers a history of IGSCC in BWRs and PWSCC in PWRs; weld overlay background and status; and the industry's BWR and PWR experience with weld overlays. The presentation also covers weld overlay repair objectives, design, analysis, inspection requirements, and planning for weld overlay implementation. Licensing issues involving weld overlays at BWRs and PWRs are also discussed.
Presented on: July 9, 2008
Instructor:
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About the Instructor
Marcos Herrera, PE holds both a MS in Engineering from the University of California, Berkeley, and a MS in Engineering Management from Santa Clara University. He has over 25 years of experience in structural mechanics evaluations of nuclear power plant components, including finite element analysis, fracture mechanics, and fatigue analysis. Herrera has also been heavily involved in development of disposition methodologies for cracking in nuclear plant components.