Dynamic transient analysis of the reactor core barrel due to sudden rupture of the recirculation line piping

摘要

We have analyzed sudden rupture of the primary cooling loop which causes a water hammer event for the reactor core barrel. Assuming that core barrel is a thin shell, we have performed dynamic stress and strain calculations in the frequency domain. The Duhamel integral was used to calculate the transient response of a shell to an impulse load caused by the water hammer event. The results obtained were used to estimate structural stability of the core barrel