Enhanced Ex-Vessel Melt Coolability for Stabilization of a Severe Accident in GEN II and GEN III LWR Power Plants

摘要

A postulated severe accident in a light water reactor (LWR) power plant could proceed to a whole core melt down, vessel failure and attack of the melt on the concrete basemat. Containment and basemat failure and a large release to the environment could occur if the molten corium concrete interaction (MCCI) is not stabilized and terminated by cooling the decay-heated melt below the temperature of concrete ablation.