Time-series differential pressure fluctuations of a flooding regime: A preliminary experimental results investigation on a 1/30 down-scaled PWR hot leg geometry

A nuclear power plant operation requires high safety system designs. Therefore, an accidental scenario such as the SBLOCA should be anticipated well. This particularly also relates to a flow phenomenon occurred during the primary circuit leakage called the counter current flow limitation (CCFL) which probably initiates a flooding regime. This work aims to investigate time-series pressure fluctuations of a flooding regime in a complex geometry representing 1/30 down-scaled of PWR hot leg. Statistical tools i.e. PDF and PSD were assessed to obtain the characteristics of time-series differential pressure fluctuations of the regime. The results obtained imply that the idea proposed are advisable to be assesed more.