JPM Sim-f — Manually Actuate Containment Spray
Sim | RO/SRO | 026 A2.03 (4.4/4.4)
Location: Simulator
Time-Critical: No
Alternate Path: Yes
Estimated Time: 8 minutes
Initial Conditions:
- A Large Break LOCA has occurred.
- The Reactor Automatically Tripped and SI was actuated.
- The crew has completed Steps 1 through 8 of 2-EOP-TRIP-1, Rx Trip or Safety Injection.
Initiating Cue:
- You are the Reactor Operator.
- The CRS directs you to continue on with EOP-TRIP-1 starting at STEP 9.
- Your evaluator will respond to any alarms not associated with your task.
Time-Critical: No
Alternate Path: Yes
Estimated Time: 8 minutes
Initial Conditions:
- A Large Break LOCA has occurred.
- The Reactor Automatically Tripped and SI was actuated.
- The crew has completed Steps 1 through 8 of 2-EOP-TRIP-1, Rx Trip or Safety Injection.
Initiating Cue:
- You are the Reactor Operator.
- The CRS directs you to continue on with EOP-TRIP-1 starting at STEP 9.
- Your evaluator will respond to any alarms not associated with your task.
Task Standard:
1. Manually initiates Containment Spray and Phase B isolation. 2. Closes 2CC131 OR 2CC190 Phase B valves. 3. Opens 2CS16 OR 2CS17 NaOH Discharge Valves.
1. Manually initiates Containment Spray and Phase B isolation. 2. Closes 2CC131 OR 2CC190 Phase B valves. 3. Opens 2CS16 OR 2CS17 NaOH Discharge Valves.
▶ Show Critical Steps & Key Actions
| Step | Critical Element | Standard |
|---|---|---|
| 9.a * | Has containment pressure remained less than 15 psig | NO. Operator determines containment pressure has NOT remained less than 15 psig. |
| 9.b * | Initiate Phase B and Spray Actuation | Uses both Safeguards keys and simultaneously rotates both keys on 2CC1 to actuate Phase B and Spray Actuation on at least one Safeguards train. |
| 9.c | Did any available CNMT Spray pump fail to start | No. Operator determines that both CS pumps are running. |
| 9.d | Are valve groups in Table B in Safeguards positions | NO. Operator identifies that 2CC131 and 2CC190 remain OPEN AND 2CS16 and 2CS17 remain CLOSED. |
| 9.e * | Place valves in Safeguards position: CLOSE 2CC131 or 2CC190 and OPEN 2CS16 or 2CS17 | Depresses CLOSED pushbutton for 2CC131 OR 2CC190 and verifies CLOSED bezel illuminates. Depresses OPEN pushbutton for 2CS16 OR 2CS17 and verifies OPEN bezel illuminates. (Closing both 2CC131 and 2CC190 and opening both 2CS16 and 2CS17 is acceptable.) |
Key Decision Point:
Step 9.e is the alternate path / discriminating step. After manually actuating Phase B and Containment Spray using the safeguards key switches, the applicant must verify that Table B valve groups are in their safeguards positions. Both 2CC131 and 2CC190 (Phase B valves) failed to auto-close, and both 2CS16 and 2CS17 (NaOH discharge valves) failed to auto-open on the CS signal. The applicant must recognize the mispositioned valves and manually reposition them — close at least one Phase B valve and open at least one NaOH discharge valve.
Step 9.e is the alternate path / discriminating step. After manually actuating Phase B and Containment Spray using the safeguards key switches, the applicant must verify that Table B valve groups are in their safeguards positions. Both 2CC131 and 2CC190 (Phase B valves) failed to auto-close, and both 2CS16 and 2CS17 (NaOH discharge valves) failed to auto-open on the CS signal. The applicant must recognize the mispositioned valves and manually reposition them — close at least one Phase B valve and open at least one NaOH discharge valve.
Ref: 2-EOP-TRIP-1 (Rev 41) | Task: N1150500502 | K/A: 026 A2.03 — Ability to predict the impacts of containment spray system operation on CSS (4.4/4.4) | Safety Fn: 5 | Source: Modified | View JPM PDF
Connections
- Related procedures: EOP-TRIP-1 — Reactor Trip or Safety Injection
- Related systems: Containment Spray
- Related exam: 2022 NRC Operating Exam