Safety evaluation of the modified auxiliary feedwater system for the Chinese improved PWR

Reliability evaluation of auxiliary feedwater system by mapping GO-FLOW models into Bayesian networks

“…As one of the engineered safety facilities, the auxiliary feedwater system acts as a heat sink to remove the decay heat from the reactor core during accident scenarios [29]. It cools down the steam generator secondary side and eventually removes the decay heat from the reactor core by a natural circulation mechanism, for example, condensing steam in nearly horizontal U-tubes submerged inside a pool [30].…”