CREEP LIFE EXTENSION OF HIGH-TEMPERATURE COMPONENTS UNDER WALL THINNING CONDITIONS

Current methods of life extension of high temperature components have been examined. Importance of changing section size as a result of corr osion and erosion has been emphasized. A simple method based on the in fluence of service exposure on rupture strength of the material and th e data collected on loss of section size during routine shut-down of p lants has been suggested. Highlights of the computer software develope d to assist such an exercise have been discussed. The outputs have bee n shown to compare fairly well with the results reported in literature .