OS6-09 ボイラ低合金鋼製蒸気配管の統一余寿命評価法の開発(OS6 設備診断・運用保全技術)

概要

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We developed The Unified Residual Life Assessment Method, which can use coarse HAZ, Coarse Weld Metal, Fine HAZ and Fine Weld Metal at Welding Joints. They are constructed by Damage Mechanism at Welding joints that links between Voids at last stage destruction. For example, M parameter method developed before 3 years can use coarse HAZ and Coarse Weld Metal. Its method actually has been using at a lot of service plants. New parameter Named L parameter can use Fine HAZ, Fine Weld Metal. We can assess residual life high accurately by combination them. We consider that its combinated them can have the highest accuracy" Facter of 1.5" in the world. Using at Thermal Power Stations ther methods, We can use their for long time, and contribute to the reduction of maintenance costs.
2005-06-28