

ENGINEERINGAPPLICATION FORMULAS FOR CALCULATING RATE OF INTERACTION BETWEEN THE ZR AND UBEARING MELT AND CORE CATCHER SACRIFICIAL MATERIAL
Sulatskiy A.A.
A.P.Aleksandrov Scientific Research Tecnological Institute (NITI), Sosnovy Bor, Russia
Citation:
Sulatskiy, A.A., (2014) Engineeringapplication formulas for calculating rate of interaction between the Zr and Ubearing melt and core catcher sacrificial material, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(14), PP. 45  50.

Keywords: NPP; severe accident; molten corium; core catcher; sacrificial material; uranium; zirconium; interaction; liquidphase burning; mathematical model; engineeringapplication formulas 
Abstracts:
Work objective is to develop noiteration formulas for evaluating the rate of interaction between the Zr and Ubearing melt and a sacrificial material having a high oxidation potential.
Work methods include the theoretical analysis of the previously developed numerical model of the Zr and Ubearing melt interaction with the solid sacrificial material having an efficient oxidant in the regime of liquidphase burning.
Work results. Noiteration engineering formulas have been produced for calculating the temperature of burning front and its progression speed at the interaction between melt and sacrificial material. They are applicable for describing the interaction of sacrificial material with melt of suboxidized corium (i.e. oxidic, containing unoxidized zirconium) and metallic ones, containing unoxidized Zr and U. The formulas are produced both for the case of totally exothermic interaction between the melt and sacrificial material, and for the totally endothermic interaction. The formulas are limited by their applicability only for the melt not having own internal heat deposition.
Scientific novelty. For the first time the engineeringapplication ratios are produced, which describe the process of liquidphase burning taking place at the interaction of Zr and Ubearing melt and the sacrificial material having a high oxidation potential.
Practical value. The developed formulas provide the noiteration method for evaluating the rate of interaction (ablation) of the sacrificial material at its interaction with Zr and Ubearing melt. 
References:
Asmolov V.G., Bechta S.V., Berkovich V.M. et al. VVER1000 Reactor Core Melt Catcher of Cold Crucible Type // Procideengs of Internatioanl Congress on Advances in Nuclear Power Plants (ICAPP 05), May 1519, 2005  Seoul, Korea  Paper 5238.
Granovsky V.S, Sulatsky A.A., Khabensky V.B. et al. Modeling of Melt Retention in EUAPR1400 ExVessel Core Catcher // Proceedings of International Congress on Advances in Nuclear Power Plants (ICAPP 12), June 2428, 2012  Chicago, USA  Paper 12348.
Sulatskiy, A.A., (2012) Mathematical model of zirconium liquidphase burning, Modern Science: Researches, Ideas, Results, Technologies, Iss. #2(10), PP. 3  9.
Sulatskiy, A.A., (2013) Mathematical model of the interaction between corium melt, containing zirconium and uranium, and sacrificial material of the core catcher, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(12), PP. 55  61.
Beshta S.V., Vitol S.A., Granovskiy V.S. et al. Formation of molten pool into crucible type core catcher for NPP with WWER // Thermal Engineering, 2011, 5, P.6165.
Beshta S.V., Khabenskiy V.B., Granovskiy V.S. et al. Interaction between oxidic sacrificial material of core catcher and molten corium in severe accident of NPP with WWER // Proceedings of the 5th Russian Conference on Heat Transfer, Russia, Moscow, October 2529, 2010, V.1.


