Q73 — EOP-FRCE-1 CS Pumps with LOCA-5 in Effect
W/E14 High Containment Pressure-EK3.2 (3.1)
Given:
• The crew has just transitioned to 1-EOP-FRCE-1 (Response To Excessive Containment Pressure) from 1-EOP-LOCA-5 (Loss Of Emergency Recirculation)
• BOTH Containment Spray Pumps have stopped in accordance with 1-EOP-LOCA-5
• Containment Pressure is 25 psig and slowly rising
• The crew is performing 1-EOP-FRCE-1 Step 3, "Has Containment Pressure Remained Less Than 15 psig"
Which ONE of the following completes the statements below?
In accordance with 1-EOP-FRCE-1 Step 3, the crew _(1)_ start BOTH Containment Spray Pumps.
With 1-EOP-LOCA-5 in effect, conserving RWST water _(2)_ a reason for how Containment Spray Pumps are operated in 1-EOP-FRCE-1 Step 3.
• The crew has just transitioned to 1-EOP-FRCE-1 (Response To Excessive Containment Pressure) from 1-EOP-LOCA-5 (Loss Of Emergency Recirculation)
• BOTH Containment Spray Pumps have stopped in accordance with 1-EOP-LOCA-5
• Containment Pressure is 25 psig and slowly rising
• The crew is performing 1-EOP-FRCE-1 Step 3, "Has Containment Pressure Remained Less Than 15 psig"
Which ONE of the following completes the statements below?
In accordance with 1-EOP-FRCE-1 Step 3, the crew _(1)_ start BOTH Containment Spray Pumps.
With 1-EOP-LOCA-5 in effect, conserving RWST water _(2)_ a reason for how Containment Spray Pumps are operated in 1-EOP-FRCE-1 Step 3.
A. _(1)_ will NOT _(2)_ is NOT
B. _(1)_ will NOT _(2)_ is
C. _(1)_ will _(2)_ is NOT
D. _(1)_ will _(2)_ is
▶ Show Answer & Explanation
✓ B. Correct. For Part 1, IAW 1-EOP-FRCE-1 Step 2, the CS pumps will be operated in as directed by 1-EOP-LOCA-5. Since LOCA-5 directed both CS Pumps to be stopped, the crew will NOT start both CS Pumps. For Part 2, with 1-EOP-LOCA-5 in effect, conserving RWST water is a reason for how Containment Spray Pumps are operated in 1-EOP-FRCE-1 Step 3.
✗ A. Part 1 is correct. For Part 2, the candidate may incorrectly conclude that high containment pressure (last fission product barrier) is the highest priority and conserving RWST water is not a reason for how the CS pumps are operated in EOP-FRCE-1.
✗ C. For Part 1, both CS Pumps will normally be started in EOP-FRCE-1. The candidate could not recall the provision to operate the CS pumps as directed by EOP-LOCA-5 and incorrectly conclude that both CS Pumps will be started. For Part 2, the candidate may incorrectly conclude that high containment pressure (last fission product barrier) is the highest priority and conserving RWST water is not a reason for how the CS pumps are operated in EOP-FRCE-1.
✗ D. For Part 1, both CS Pumps will normally be started in EOP-FRCE-1. The candidate could not recall the provision to operate the CS pumps as directed by EOP-LOCA-5 and incorrectly conclude that both CS Pumps will be started. Part 2 is correct.
Ref: EOP-FRCE-1 (Response To Excessive Containment Pressure) | LO: NOS05FRCE00-06 (EOP-FRCE-1, 2, AND 3 CONTAINMENT ENVIRONMENT) | Source: New | Cognitive: Lower
Connections
- Related systems: Containment Spray, CFCUs
- Related EOPs: EOP-FRCE-1 — Response to Excessive Containment Pressure, EOP-LOCA-5 — Loss of Emergency Coolant Recirculation
- Related exam: 2018 NRC Written Exam