Emergency Injection System

The Emergency Injection System prevents core exposure in case of LOCA. In the event of such accident, the primary system is depressurised with the help of the emergency condensers to less than 15 bar, with the water level over the top of the core. At 15 bar this low pressure water injection system comes into operation.

The system consists of two tanks with borated water connected to the RPV. The tanks are pressurised to 21 bar, thus when the pressure in the reactor vessel reaches 15 bar, the rupture disks break and the flooding of the RPV starts.

The system guarantees that the core will not be exposed for a period of 48 hours as from the initiation of the accident.