Lecture 3

Question 1

PWR safety systems

Answer 1

➢Reactor Protection System
➢Shutdown systems
➢Pressure relief systems
➢Emergency Feedwater System
➢Emergency core cooling system
➢Containment spray system
➢Residual heat removal system
➢Cooling water systems

Question 2

The reactor protection system consists of:

Answer 2

Analog part : comprising sensors and signal processing equipment
Logic part: analyses the signals in order to set diagnosis and develop signals to relays
Relays: initiate required action, such as
scram, start-up of the emergency core cooling systems etc.