Action Plans for Motor-Operated Valves and Check Valves

摘要

The proper performance of motor-operated valves (MOVs) and check valves isnecessary for the safe operation of a nuclear power plant. Problems have been experienced with these valves for many years. Currently, the U.S. Nuclear Regulatory Commission (NRC) and the nuclear industry have a number of activities under way to provide assurance that MOVs and check valves will successfully perform their safety functions when needed. The Mechanical Engineering Branch (EMEB) of the Office of Nuclear Reactor Regulation has been assigned the responsibility of coordinating NRC activities and monitoring industry activities regarding MOVs and check valves. To meet this responsibility, EMEB has prepared action plans to provide assurance of the proper performance of these valves. Through the action plans, the NRC staff will have an organized approach to resolve the concerns regarding the operability of MOVs and check valves in a timely manner.