Aerosol retention during an unisolated steam generator tube rupture severe accident event

摘要

A steam generator tube rupture (SGTR) initiated core damage sequence can potentially lead to containment failure. In such a sequence, fission products released from the damaged core to the primary system may be carried by the flow through the broken tube(s) into the secondary side of the steam generator and finally out to the reactor building via, for example, a stuck open safety relief valve.