Parameter study of reactivity accidents in the FRM (Munich-Garching Research Reactor).

摘要

A parameter study was carried out for the FRM and the KKE7 core; in this study the effect of the important parameters on the chronological accident sequence and the max. power that was reached was investigated for the startup accident as the limiting case. The parameters that were varied included the position of the fully withdrawn safety rods and their drop behavior, the traveling velocity and pitch of the rod characteristic curve for the control rod and the safety rods, the delay time between the attainment of the physical limit value and the start of the drop movement, and the level of the neutron flux density limit. The nuclear boundary conditions for the analysis were adopted substantially from the HFR, Grenoble. 3 refs., 7 figs., 1 tab.