Operating Experience Insights into Below Ground Piping at Nuclear Power Plants: A Topical Report by the NEA Component Operational Experience, Degradation and Ageing Programme

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Structural integrity of piping systems is important for safety and operability of nuclear plants. In recognition of this, information on degradation and failure of piping components and systems is collected and evaluated by regulatory agencies, international organisations and industry organisations worldwide. This information is often used to provide systematic feedback to reactor regulation and research and development programmes associated with non-destructive examination (NDE) technology, in-service inspection (ISI) programmes, leak-before-break evaluations, risk-informed ISI, and probabilistic safety assessment (PSA) applications.