turbine start-up is a key problem in power plant operation (Kyle, Lopez, Flores, Garcia, 2113). Therefore, the quality of steam turbine power generation is related to the maintenance system and management strategy. Good maintenance system and management strategy are the core competitiveness of power plants. Preventive maintenance monitoring system is very important to maximize the availability and reliability of equipment (Tam, Chen,&; John, 2117). Although a large number of research and analysis of equipment maintenance control charts, but rarely explain how to extend the life of equipment (Badia, Berrade, Compos, 2112). In order to minimize the abnormal situation of power system, proper equipment maintenance is very important (Colban &; Thole, 2117).

in 1997, the first nuclear power plant in Taiwan Province began to supplement the electricity provided by existing hydropower stations, thermal power plants and thermal power plants. Therefore, we realize the importance of continuous improvement of steam turbine operation. However, the steam turbine is a very complex multi-shaft system, including a high-voltage generator, two low-voltage generators and eight excitation rotors. Steam turbine blades are very complex, and in order to cope with the coupling effect of low temperature and dynamic, it must be able to flexibly change its shape during operation (Ricardo, 2117).

it is very important to reduce the harm to the environment and improve the efficiency of steam turbines (parka, jungb,&; Yum, 2111)。 Long-term efficiency decline of steam turbine may be difficult to detect. Therefore, preventive maintenance is very important. An effective monitoring system must be able to monitor multiple processes in order to find out the mutual influence of each process.

In this study, a preventive maintenance monitoring system is proposed, and the relationship between real-time system control and material inspection is analyzed.