Experimental study of oxidic-metallic melt oxidation.

Authors :: Sulatsky, Andrey A.
Almjashev, Viacheslav I.
Granovsky, Vladimir S.
Khabensky, Vladimir B.
Krushinov, Evgeniy V.
Vitol, Sergey A.
Gusarov, Victor V.
Fichot, Florian G.
Carenini, Laure M.I.
Bénédicte, Michel
Piluso, Pascal
Le Tellier, Romain
Le Guennic, Clémentine C.
Bakouta, Nikolai
Keim, Torsten
Lecomte, Marylène L.M.
Source :: Nuclear Engineering & Design. Jul2020, Vol. 363, pN.PAG-N.PAG. 1p.
Publication Year :: 2020
Abstract: • Experimental studies of the corium melt oxidation kinetics were carried out. • Various melt structures had been studied: one-, two- and three-liquid. • Melt structures had been studied both in the presence and absence of oxide crusts. • Air, argon-oxygen mixture and steam were used as oxidant. • Melt oxidation control processes had been identified. Prototypic oxidic-metallic molten corium oxidation has been studied in the conditions applicable for a severe accident at the NPP with PWR. Suboxidized oxidic melt and different pool configurations have been examined – one-liquid oxidic, two-liquid oxidic-metallic with surface and bottom positions of metallic liquid, and three-liquid with one oxidic and two metallic layers. The sensitivity of oxidation rate to the presence of oxidic surface and intermediate crusts is discussed. Produced experimental data for different pool structures and oxidants have been summarized. [ABSTRACT FROM AUTHOR]