Long-term operation (LTO) of nuclear power plants is being pursued by the majority of the industry. Most U.S. plants have already extended plant licenses up to 60 years. One has licenses that allow operation up to 80 years with more expected to follow. Nuclear power plants with an extended operating license implement Aging Management Programs (AMPs) to ensure critical infrastructure (e.g., concrete, piping and cables) are monitored for loss of intended function, and subsequent replacement, as they age. These passive components are critical to the long-term safe operation of these plants.