Abstract
The damage example is increasing which it is difficult part to check directly with the increase in worn thermal power station. The damage on a steam-turbine low-pressure rotor blade stud section is a typical example. It is possible to establish predict evaluation by the external factor or the situational factor in case of low-pressure rotor. According to the statistically evaluation from actual result external cause data, and physical cause analysis, we established the predict evaluation of the low-pressure rotor damage situation, "the predict evaluation approach of the degree of low-pressure rotor corrosion-fatigue damage risk".
