Numerical and Experimental Researches on In-Vessel Retention Possibility for VVER Reactors

Summary Justification of the in-vessel corium melt retention possibility is a complex task requiring for its solution computational researches with application of specific codes and experimental investigations for various physical and chemical phenomena. JSC "Atomproekt" and Alexandrov Research Institute of Technology (Sosnoviy Bor, Russia) carried out a number of experimental and computational studies related to the analysis of core melt retention inside the vessel for high-power VVER reactor. The main results of this research are presented in this article.