Based on the requirements of western codes and rules and the research achievements, the analysis procedures for structure integrity of reactor pressure vessel (RPV) under pressurized thermal shock (PTS) were presented in this paper.

4, combined with the heat transfer experiments based on the 1 : 10 setup at ambient pressure, numerical simulations were performed to investigate the thermal-hydraulic phenomena of the pressurized thermal shock (PTS), which is caused by the cold safety injection(SI)fluid directly into the reactor pressure vessel (RPV) in the pressurized water reactor (PWR).

Numerical Simulation of Heat Transfer Characteristics of RPV Downcomer in PWR under PTS;