DEVICE FOR EVALUATING REMAINING LIFE OF STEAM TURBINE ROTOR, METHOD OF EVALUATING REMAINING LIFE OF STEAM TURBINE ROTOR, ROTOR BLADE AND STEAM TURBINE

摘要

PROBLEM TO BE SOLVED: To propose a device for evaluating a remaining life of a steam turbine rotor and a method of evaluating the remaining life of the steam turbine rotor for non-destructively evaluating strength and a remaining life time of blade mounting portions of the steam turbine rotor, which form a stress concentration zone, in the steam turbine rotor having unknown composition components without causing a problem in subsequent operation.;SOLUTION: In the steam turbine rotor 10 having unknown composition components, metal material forming the steam turbine rotor 10 is specified by specifying the composition components. Current strength of the steam turbine rotor 10 can be specified and a remaining life time can be estimated by comparing information on the specified metal material and service temperature, stress and operating time of the steam turbine rotor 10 with strength specification data stored in a storage section 103. The remaining life can be non-destructively evaluated without causing a problem in the subsequent operation of the steam turbine rotor 10.;COPYRIGHT: (C)2006,JPO&NCIPI