Containment Floodup & Long-term Core Cooling

IRWST's injection flows into the Reactor and begins to flood up containment. As the IRWST continues to drain, a low set point is reached which actuates containment recirculation. This creates a long-term cooling loop for colder water in-containment to be injected into the DVI line. Heat generated throughout the event is rejected to the atmosphere through the Passive Containment Cooling System (PCS).

Condensate forms on the containment walls and is returned to the IRWST. Heat is transferred to the atmosphere through the PCS.