Technical Evaluation Requirements on Welding-Related Nonconformance Reports

Abstract During the manufacturing and installation of nuclear power equipment and components, welding-related nonconformance reports (NCRs) prepared by initiators for evaluation vary considerably in quality, influencing working efficiency and project progress. In accordance with the project practices, this article tries to determine the reasons for low-quality welding-related NCR content from three aspects: document flow process, skill levels of technicians, and nonconforming-item control procedure. The technical evaluation requirements on welding-related NCRs are put forward from the perspective of design evaluation in accordance with regulations, standards, design principles, professional knowledge, and engineering practices. According to human performance theory, these evaluation requirements can be used to guide the preparation and review of welding-related NCRs. The inherent logic behind these requirements is to help the initiators and reviewers of welding-related NCRs transform their knowledge-based behavior modes to rule-based behavior modes, thus greatly improving the content quality of NCRs.