| Summary: | 碩士 === 國立雲林科技大學 === 工業工程與管理研究所碩士班 === 90 === The electric generator is Taiwan Power Company’s production device. Any inefficiency or inadequacy in maintaining the machinery will not only cause power failures, affecting business profits and national economic growth but also harm electricity users. It will result in an increase in costs related to halted factory operations and will have a severe impact on the general public.
The Takuan Pumped-Storage Plant contributes to the overall power generating system. It is the first pumped-storage generator in the Republic of China. The Takuan plant started operations in 1985. It can generate power in the daytime as well as run in a pumped-storage mode during the nighttime. The plant utilizes off-peak electricity such as the inexpensive nighttime surplus electricity generated in nuclear power plants to pump and store water. The pumped and stored water can be used in generating additional power to meet the high demand in the daytime. This will decrease the use of high-priced fuels such as diesel oil and natural gas.
The machinery of the Takuan plant is much more complex than conventional hydropower machinery. It contributes a lot to the power-generating system, using AFC and AGC for running purpose and hence it has to run very frequently. Moreover, the dirty water in the lower reservoir is causing many mechanical problems. To resolve these problems, research efforts should focus on the maintenance of the machinery.
At the outset of operations in 1985, the maintenance of the pumped-storage generator relied on the manufacturer’s and Taiwan Power Company’s hydropower maintenance manual. Maintenance procedures took into consideration the company’s policy and the deteriorating machinery, making modifications or adjustments through careful studies and achieving the ideal of preventive maintenance. Furthermore, an SOP process has been applied to good maintenance procedures. Through Quality Control and improvement proposals, Taiwan Power Company’s machinery has not seen any significant mechanic failures since 1991. The average mechanic failure rate is only 1.93%, much lower than the 9.82% rate of the pumped storage generator supplied by NERC and is very reliable. The rotation usability is as high as 90%.
The maintenance procedures of the Takuan plant’s machinery strictly follow the KYT, ISO-9002 and ISO-14001 systems and make sure that no disasters and public hazards are induced while enhancing operating quality. Taiwan Power Company has been conferred an honorable award for the eighth consecutive term for causing zero disaster and zero public hazards. It has not resulted in any disaster and public hazards since 1978.
This thesis aims at sorting out the maintenance procedures undertaken at the Takuan plant, collecting operational achievements to support the measures taken in machinery maintenance, and through questionnaires, deciding which maintenance procedures contribute to the most achievements. Research outcome shows that the top seven maintenance procedures, by significance, are manuals, each question of which accounts for 7.32445 points, executive maintenance procedures, 7.855055 points, standardized maintenance procedures, 6.80649 points, modified maintenance procedures and improved equipment, 6.73093 points, achievement assessment and examination, 6.50784 points, company policy, 5.9335 points, and continuing innovations in maintenance procedures, 5.681733 points.
Under each category, this thesis finds the top 5 important factors. The result of this thesis will have its practical reference value to the equipment maintenance procedures within Taiwan Power Company.
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