Results of experimental simulation of interaction between corium of a nuclear reactor and sacrificial material (Al2O3) with a lead layer

Skakov M. Baklanov V. Bekmuldin M. Kukushkin I. Akaev A. Gradoboev A. Stepanova O.
2024 AIMS Press

AIMS Materials Science
2024 #11 Issue 1 81 - 93 pp.

This paper presents the results of an experimental study of the interaction of a candidate sacrificial material (SM) for a light water reactor melt trap with corium at the Lava-B test-bench. The candidate sacrificial material is a combination of aluminum oxide and a lead layer. The idea of using such a combination of SM is based on the fact that when the lead layer interacts with corium, there will be an increase in the intensity of heat removal from the corium, as well as the chemical interaction between the corium and SM due to the high heat-conducting properties of lead. This approach will improve the efficiency of corium localization in the melt trap compared to the current set of sacrificial material. Experiments have shown active melting and boiling of lead during its interaction with corium. This is confirmed both by the readings of thermocouples and by the X-ray diffraction phase analysis of the deposit material formed on the walls of the melt receiver (MR) of the Lava-B bench, sampled after the experiment. The experiment results show that the lead layer reduces the rate of increase in the temperature of the corium and increases the rate of erosion of the ceramic part of the SM. With these circumstances, it is possible to conclude that the use of aluminum oxide with a lead layer is promising in practice.

core , corium , induction heating , Lava-B bench , sacrificial material , severe accident

Text of the article Перейти на текст статьи

National Nuclear Center of the Republic of Kazakhstan, Kurchatov, 071100, Kazakhstan
Institute of Atomic Energy NNC RK, Kurchatov, 071100, Kazakhstan
Shakarim University, Semey, 071412, Kazakhstan
National Research Tomsk Polytechnic University, Tomsk, 634050, Russian Federation

National Nuclear Center of the Republic of Kazakhstan
Institute of Atomic Energy NNC RK
Shakarim University
National Research Tomsk Polytechnic University

10 лет помогаем публиковать статьи Международный издатель

Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026