Reflooding investigation on light water reactor model fuel assemblies and debris under the loss of coolant accident simulation

• Published in: High temperature Vol. 55; no. 6; pp. 914 - 921
• Main Authors: Bazyuk, S. S., Kuzma-Kichta, Yu. A., Parshin, N. Ya, Popov, E. B., Soldatkin, D. M.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-11-2017; Springer Nature B.V
• Subjects: Accidents; Assemblies; Atoms and Molecules in Strong Fields; Beds; Classical and Continuum Physics; Computer simulation; Front velocity; Heat and Mass Transfer and Physical Gasdynamics; Heat balance; Industrial Chemistry/Chemical Engineering; Laser Matter Interaction; Light water; Light water reactors; Loss of coolant accidents; Materials Science; Nuclear fuel elements; Nuclear fuels; Physical Chemistry; Physics; Physics and Astronomy; Plutonium; Pressurized water reactors
• ISSN: 0018-151X; 1608-3156
• DOI: 10.1134/S0018151X17060037

The reflooding investigations of large-scale model fuel assemblies and sphere beds under Design Basis Accident and Beyond Design Accident of Light Water Reactors WWER and PWR are presented. The generalizing correlation on the quench front velocity for model fuel rod assemblies and sphere beds was developed on the base of heat balance and Leidenfrost temperature correlation. It is shown that reflooding duration calculation results of model fuel assemblies and sphere beds are in good agreement with the experimental data.