The Development of New Residual Life Assessment Method at The High Temperature Steam Piping Welding Joints

Abstract

We developed The Total Residual Life Assessment Method, which can use coarse HAZ, Coarse Weld Metal, Fine HAZ and Fine Weld Metal at Welding Joints. Its constructed by Damage Mechanism at Welding joints that I inks between Voids at last stage destruction. Using at Thermal Power Stations this method, We can use their for long time, and contribute to the reduction of maintenance costs.