Example of corium pool propagation in core computed with the simplified geometrical model in the PROCOR framework (computation results). The corium pool is stratified: the layers from bottom to top are: a heavy metal layer (m = 20,875 kg, T = 3090 K), an oxidic layer (m = 70,389 kg, T = 3139 K), a steel layer (m = 571 kg, T = 2219 K). The corium pool shape is formed by a spherical cap and a cylinder.