The advancement in innovative high-power reactors necessitates concurrent study on the
core failure modes and severe accident scenarios, towards a better reactor design. This …

Using the CFD-DEM method, numerical calculations are conducted to analyze the shape of
particle beds formed in two small-sized pre-flooded reactor cavities, aiming to understand …

This study evaluates how large a debris bed becomes dryout during ex-vessel cooling in a
pre-flooded reactor cavity if a postulated severe accident occurs. It is assumed that all …

The molten salt leakage accident is an important issue in the nuclear safety analysis of
molten salt reactors. While the molten salt leaks from the pipeline or storage tank, it will …

We develop an analytical model about concrete ablation during ex-vessel cooling in a pre-
flooded cavity. The model considers the melting of dry debris bed, the formation of crust, the …

Understanding the behavior of molten corium is crucial for effective heat management and
ensuring the integrity of reactor containment during severe nuclear incidents. Corium …

When the core is breached during a severe nuclear accident, a molten mixture of nuclear
fuel, cladding, and structural supports is discharged from the reactor vessel. This molten …

This study evaluates how multi-phase fluids flow and how a large volume becomes a dryout
region in a volumetrically heat-generating conical porous bed formed in the pre-flooded …

This paper presents a feasibility study on a pre-flooded cavity strategy for cooling molten
corium in OPR1000 nuclear power plants. The characteristics of debris beds formed in the …

This study proposes a method to analyze the concrete ablation depth during top water
flooding ex-vessel cooling by considering the phenomena occurring in dry and flooded …