OS0806 Study on the Primary Stress Limits of Aseismatic Evaluation for NPP Piping

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  • OS0806 配管耐震健全性評価の応力制限に関する検討

Abstract

As the technical background by the domestic and overseas previous studies, only prevention of the fatigue damage was required as permission for the S class piping in the service condition Ds, and the primary stress limit for the purpose of the prevention of the plastic collapse was actually abolished in JEAC4601-2008. The plastic collapse of pipes is undeniable considering the variety of pipings. In this study, the needs was confirmed for stress limit for plastic collapse due to seismic load.

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