Digest report of investigation committee for asset management for electric power equipments based on insulation diagnosis

Many plant infrastructures in Japan were set up in the high-growth period (from the 1960’s to the 1980’s), and electric equipments installed with them have become old. Some maintenance is being made in order to extend their life, but the effects are limited and renewal should be planned. Generally, investment in equipment is concentrated on a high productivity area. The renewal of old equipments doesn’t make large profit, and the distribution ratio of investment tends to be small. It is very important subject to utilize the limited investment effectively for maintenance and renewal. For this theme, there is a great deal of interest in asset management techniques that incorporate economic indicators and trouble risk evaluation for service-aged equipments. “Plant Asset Management” is expected for not only maintenance cost cutting but also stable and effective plant operation.