Reactor Protection System

Question 1

State two functions of the Reactor Protection System.

Answer 1

1. To protect the reactor core
   Not to exceed Technical Specifications
   Protect the health and safety of the public & staff.
2. To protect plant equipment

Question 2

Identify five Reactor Protection System Trips.

Answer 2

1. High Power Level (Variable)
2. High Rate of Change of Power
3. Low Reactor Coolant Flow
4. Low Steam Generator Water Level (either A or B)
5. Low Steam Generator Pressure (either A or B)
6. High Pzr Pressure
7. *Thermal Margin/Low Pressure (TM/LP)
   *Asymmetrical SG Transient – via TM/LP
8. Loss of Load
9. High Containment Pressure
10. Local Power Density (LPD)
11. Loss of RCP Component Cooling Water (Unit 2)
12. MANUAL