Dissimilar Metal Weld Inspection, Monitoring and Repair Approaches

This publication provides guidance on developing and improving dissimilar metal weld inspections in nuclear power plants, including good practices, lessons learned, and practical case studies. It discusses requirements for an in-service inspection program, different inspection techniques, qualification and evaluation of results, and challenges for ultrasonic inspection of dissimilar metal welds. The inspection program is based on the safety classification or significance of the component, and repair and replacement techniques are discussed to mitigate cracks and corrosion.

Format: Paperback / softback
Length: 122 pages
Publication date: 30 September 2018
Publisher: IAEA

This comprehensive publication delves into the critical aspects and challenges associated with developing and enhancing dissimilar metal weld inspections in nuclear power plants. It offers valuable insights and best practices, drawing from extensive experiences and lessons learned. The publication is designed to serve as a valuable resource for inspection organizations, their managers, operating staff, and local suppliers who provide inspection services to utilities. It also includes practical case studies to illustrate the application of these principles.

The publication begins by discussing the requirements for an effective in-service inspection program, emphasizing the importance of aligning inspection techniques and methods that align with the safety classification or safety significance of the components being inspected. It explores various inspection techniques, including ultrasonic inspection, and discusses the qualification and evaluation of inspection results.

One of the key focuses of this publication is the discussion of dissimilar metal welds repair and replacement techniques, with an emphasis on mitigating or eliminating cracks and corrosion that could potentially impact safety margins. The authors provide practical guidance on how to identify and address these issues, ensuring the integrity and reliability of the welds in nuclear power plants.

Furthermore, the publication addresses the challenges associated with ultrasonic inspection of dissimilar metal welds, including the limitations of traditional inspection methods and the need for advanced technologies and expertise. It highlights the importance of training and development programs to ensure that inspectors have the necessary skills and knowledge to perform accurate and reliable inspections.

Overall, this publication serves as a valuable tool for anyone involved in developing and improving dissimilar metal weld inspections in nuclear power plants. It provides a comprehensive framework for implementing effective inspection programs, leveraging best practices and lessons learned from industry experts. By addressing the critical aspects and challenges associated with these inspections, the publication contributes to the safety and reliability of nuclear power infrastructure.

Weight: 338g
Dimension: 210 x 295 x 14 (mm)
ISBN-13: 9789201056184