Experimental study of transient phenomena in the three-liquid oxidic-metallic corium pool

• Published in: Nuclear engineering and design Vol. 332; pp. 31 - 37
• Main Authors: Almjashev, V.I., Granovsky, V.S., Khabensky, V.B., Kotova, S.Yu, Krushinov, E.V., Sulatsky, A.A., Vitol, S.A., Gusarov, V.V., Fichot, F., Michel, B., Piluso, P., Le Tellier, R., Fischer, M., Le Guennic, C., Bakouta, N.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-06-2018; Elsevier BV; Elsevier
• Subjects: Heavy metals; Liquid metals; Melting; Physics; Reactors; Stainless steel; Thermodynamics
• ISSN: 0029-5493; 1872-759X
• DOI: 10.1016/j.nucengdes.2018.03.004

•Physicochemical phenomena in 3-liquid corium pool are studied under IVR conditions.•3-liquid pool structure can stay stable for a certain period of time.•Components partitioning through crust can transform of 3- to a 2-liquid structure.•Obtained data can be used for evaluation of transient processes.
Non-steady physicochemical phenomena in the three-liquid molten pool of prototypic corium are studied in the context of in-vessel melt retention problem. Experiments are made on the Rasplav-3 test facility within the CORDEB program. Structure of the initial molten pool consists of the surface light melt of molten steel, the intermediate layer of oxidic melt separated from steel melt by the crust; and the bottom layer of heavy metallic melt. It is determined that the three-layer pool structure can stay stable for a certain period of time, but the partitioning of steel and oxidic melt components through the crust brings the possibility of transformation of the three-layer pool to a two-layer structure.