Experiments on MCCI with oxide and steel

Induction heating was also used for decay heat simulation in the laboratory-scale SICOPS tests, using a “cold crucible” technique and a higher frequency of about 1.3 MHz. Tests were performed to study the influence of an additional metal phase on the 1D erosion behaviour. For these mixed melt tests, concrete specimen of 10 cm diameter, made of siliceous concrete with grain aggregates, were used. Oxide melts were either simulant or prototypic melts. Metallic melt was form by addition of steel (steel 37.1) pellets after oxidic melt has been produced. It was found that the impact of the metal phase depends on heating power and gas release rate. The analysis suggests that the mechanism of concrete attack by metal melt can be understood as a thermal destruction mechanism.