LBB technology application to the primary piping system of the NPP V1 Jaslovske Bohunice

In-plane and out-of-plane constraint effects under pressurized thermal shocks

“…According to Sauter et al (1990), the limiting value of h varies from 2.3 to 2.8 for a circumferential crack subjected to thermal shock with lower value at the free end and higher value at the center of the crack. It is also reported that the stress triaxiality for a crack in an infinite plate under uniform tension is 2.167 (Sauter et al, 1990;Zdarek et al, 1993;Siegele et al, 2008). Therefore, there is a need to adjust the toughness data from standard test specimens to the RPV by incorporating the stress triaxiality distribution.…”