KEYWORDS: Reliability, Failure analysis, Systems engineering, Safety, Data processing, Analytical research, System identification, Inspection, Data acquisition, Computing systems
System monitoring is a process to collect, evaluate and analyze various data related to system performance, so as to realize system performance monitoring, trend analysis and health evaluation. This paper researches system monitoring based on Maintenance Rule (MR) and Equipment Reliability Process Description (AP-913). This paper also introduces the background and concept of system monitoring; provides implementation process of system monitoring that is applicable to Chinese nuclear power plants; analyzes the key elements of system monitoring scheme development; takes monitoring program development of a typical system as an example to discuss the difficulties during development process; evaluates and summarizes application benefit of system monitoring scheme. Both international and domestic practice show that system monitoring for important systems in nuclear power plants can verify the effectiveness of current preventive maintenance strategies, ensuring that system equipment could satisfy its performance requirements under the designed condition. In addition, system monitoring could help prevent unplanned trip in nuclear power plants, improve availability and reliability of system equipment and provide technical support for sustainable improvement and long-term strategies of plants.
Component classification is the basis and origin of equipment reliability management process. For production management, reasonable allocation and optimized utilization of maintenance resources at nuclear power plants, classification management should be implemented on components to ensure safe, stable and economical operation of units at nuclear power plants. Based on equipment reliability management (AP-913) system, this paper provides classification identification rule and identification method process of Chinese improved pressurized water reactor (CPR1000) units and verifies it by combining with application cases and finally provides application direction of classification results, which provides important references for component classification management of nuclear power plants at home and abroad.
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