2018 Q43 — RCS Safety Limit Pressure

✓ C. Correct. For Part 1, SL 2.1.2 (Reactor Coolant System Pressure) will NOT be met when RCS pressure is greater than a MINIMUM of 2735 psig. For Part 2, if the Unit is in MODE 3 when RCS Pressure has exceeded the SL 2.1.2 limit, then RCS pressure must be reduced within its limit within a MAXIMUM of 5 minutes.

✗ A. Incorrect but plausible. For Part 1, 2485 psig is the setpoint for the PZR safety valves. Consequently, the candidate could incorrectly conclude that SL 2.1.2 (Reactor Coolant System Pressure) will NOT be met when RCS pressure is greater than a MINIMUM of 2485 psig. Part 2 is correct.

✗ B. Incorrect but plausible. For Part 1, 2485 psig is the setpoint for the PZR safety valves. Consequently, the candidate could incorrectly conclude that SL 2.1.2 (Reactor Coolant System Pressure) will NOT be met when RCS pressure is greater than a MINIMUM of 2485 psig. For Part 2, IAW SL 2.1.2, if the Unit was in Mode 1 or 2 when SL 2.1.2 limits were exceeded, then RCS pressure must be reduced within its limit within a MAXIMUM of 60 minutes. Consequently, the candidate could incorrectly conclude that if the Unit was in Mode 3 when SL 2.1.2 limits were exceeded, then RCS pressure must be reduced within its limit within a MAXIMUM of 60 minutes.

✗ D. Incorrect but plausible. Part 1 is correct. For Part 2, IAW SL 2.1.2, if the Unit was in Mode 1 or 2 when SL 2.1.2 limits were exceeded, then RCS pressure must be reduced within its limit within a MAXIMUM of 60 minutes. Consequently, the candidate could incorrectly conclude that if the Unit was in Mode 3 when SL 2.1.2 limits were exceeded, then RCS pressure must be reduced within its limit within a MAXIMUM of 60 minutes.

Ref: NOS05TECHSPEC-12 (Technical Specifications) | LO: NOS05TECHSPEC-12 LO 6, 7 | Source: Modified Bank | Cognitive: Lower