抄録
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.
