Abstract: As a lesson learned from the Fukushima nuclear accident, the importance of accident mitigation for beyond-design basis events (BDBEs) is recognized. Excessive earthquake is a typical BDBE. During such events, the fast ...

Abstract: Bellows structure is used to absorb the thermal expansion maintaining the boundary of the inside to outside, and it is applied to constitute the containment vessel (CV) boundary of the nuclear power plant. In this study, ...

Abstract: Ratcheting is a progressive incremental inelastic deformation or strain which can occur in a component that is subjected to variations of mechanical stress, thermal stress, or both. This study concentrated on the ratcheting ...