抄録
Risk based maintenance is the technique of giving the priority of a maintenance quantitatively. The technique estimates a risk calculated by product of the probability of failure and the consequence. Generally, evaluation of probability of failure is conducted by the evolution prediction of the damage based on the hazard data base for the static equipment. But, for the non-static equipment, its damage is mainly caused accidently, so it is difficult to evaluate the damage based on them. Therefore, for the non-static equipment, damage evaluation based on the monitoring data is effective. And the SI-F method proposed by authors that is evaluated by the change of relation between measurements of several sensors is used to process the large amount of data statistically. In this paper, the SI-F method is applied to the risk assessment of a rotating machine and, the suitable method for decreasing the risk is proposed by examination of the method of defining and updating the threshold of damage detection.
