OS1407 溶接熱影響部に複数き裂を有するオーステナイト系ステンレス鋼配管の破壊評価(エネルギー機器の経年変化に関する健全性評価,オーガナイズドセッション)

概要

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Stress Corrosion Cracking (SCC) has been observed as circumferential multiple flaws in weld heat-affected zone of primary loop recirculation system piping and core shroud made of low carbon stainless steel. In the Japan Society of Mechanical Engineers code, Rules on Fitness-for-Service for Nuclear Power Plants, there is no fracture assessment of piping with multiple flaws which are not applied to combination rule criteria. Through fracture test of piping with circumferential two flaws in weld heat-affected zone, the limit load estimation method was evaluated for fracture assessment of stainless steel piping.
一般社団法人日本機械学会の論文
2009-07-24