Risk-Based Improvement of Nuclear Power Plant Inservice Test and Inspection Programs

摘要

Nuclear power plant inservice testing (IST) programs were developed to ensure the reliable operation of safety-related pumps and valves. Codes, standards, and guidelines for these test have been developed by the American Society of Mechanical Engineers (ASME) Operations and Maintenance Committee at the request of the U.S. Nuclear Regulatory Commission (NRC). The essential regulation governing this process of testing is 10CFR50.55, which has been implemented viaASME Section XI,both for passive component examination (welding, studs, etc.) and for active component testing (pumps and valves).