Review of researches on flow blockage accident in liquid-metal-cooled reactor

Within the sphere of nuclear energy, reactors cooled by liquid metals are esteemed for their exceptional cooling efficacy and pronounced safety benefits. However, the specter of flow blockage accidents presents a formidable challenge to their operational safety, with the most severe scenarios risking core meltdown and grave nuclear hazards. It is, therefore, paramount to possess a holistic grasp of the essential dynamics, evolution, and prospective impacts of blockage accidents within liquid metal reactors. This comprehensive review delves into the gamut of researches concerning reactor flow blockage accidents, including mechanism and modeling of blockage generation as well as experiments, numerical simulation, and monitoring technique of flow blockage accidents. Its objective is to furnish a robust theoretical and practical framework to bolster the safe management and operation of liquid metal-cooled reactors, facilitate the prompt identification and resolution of blockage accidents, and devise efficacious preventative strategies.