Research of severe accidents results of water-cooled power reactors on COTELS project

In the Institute of Atomic Energy there have been created experimental facilities for researches of the results of some stages of severe accidents. In the scope of Kazakhstan - Japan project COTELS, at the facilities there were conducted 4 groups of experiments on the study of the core materials (corium) melt interaction with construction materials, water and concrete. There are described experimental facilities and main outcomes of conducted experiments. The important result of these experiments is confirmation of conditions at which the suppression of steam explosion and MCCI process ceasing are possible. (author)