An Analysis of the Dynamic Behavior of the Core

The dynamic behavior of the Superphénix core was tested during commissioning of the plant. From comparison of experimental and calculated results, it was concluded that the time-dependent parameters agree quite well. The comparison is based on DYN system code calculations and on tests performed at zero power (reactivity step leading to a self-stabilization) and at power (steps on reactivity, primary flow, and secondary flow). These tests checked the behavior of the nuclear steam supply system.