摘要: Aging degradation in safety and support systems of nuclear power plants should be managed to prevent safety margins from eroding below the acceptable limits provided in plant design bases. The Nuclear Plant Aging Research (NPAR) ... 展开 Aging degradation in safety and support systems of nuclear power plants should be managed to prevent safety margins from eroding below the acceptable limits provided in plant design bases. The Nuclear Plant Aging Research (NPAR) Program, conducted under the auspices of the U.S. Nuclear Regulatory Commission (NRC), Office of Nuclear Regulatory Research, and other related aging management programs are developing technical information on managing aging. The aging management process central to these efforts consists of three key elements: 1) selecting structures, systems, and components (SSCs) in 4 which aging should be controlled, 2) understanding the mechanisms and rates of degradation in these SSCs, and 3) managing degradation through effective inspection, surveillance, condition monitoring, trending, record keeping, maintenance, refurbishment, replacement, and adjustments in the operating environment and service conditions. This document concisely reviews and integrates information developed under NPAR and other aging management studies and other available information related to understanding and managing age-related degradation and provides specific references to more comprehensive information on the same subjects. 收起