JPM Sim-f — Perform 22 CFCU Surveillance Test IAW S2.OP-ST.CBV-0003
Sim | RO/SRO | A1.04 (3.3)
Location: Simulator
Time-Critical: No
Alternate Path: No
Estimated Time: 10 minutes
Initial Conditions:
- Unit 2 is at 100% power.
- No major equipment out of service and no active Tech Specs are in effect.
Initiating Cue:
- You are the Reactor Operator.
- The CRS has directed you to PERFORM a scheduled surveillance test on 22 CFCU IAW S2.OP-ST.CBV-0003, Containment Systems - Cooling Systems.
- All Prerequisites are completed SAT and all required M&TE are installed in the field.
- A field NEO is standing by to provide SW header differential pressure when directed.
- Notify CRS of test results.
Time-Critical: No
Alternate Path: No
Estimated Time: 10 minutes
Initial Conditions:
- Unit 2 is at 100% power.
- No major equipment out of service and no active Tech Specs are in effect.
Initiating Cue:
- You are the Reactor Operator.
- The CRS has directed you to PERFORM a scheduled surveillance test on 22 CFCU IAW S2.OP-ST.CBV-0003, Containment Systems - Cooling Systems.
- All Prerequisites are completed SAT and all required M&TE are installed in the field.
- A field NEO is standing by to provide SW header differential pressure when directed.
- Notify CRS of test results.
Task Standard:
This task is satisfactorily met when the applicant has placed the CFCU in the required test condition IAW step 4.1.2 of S2.OP-SO.CBV-0001, obtained the required test data, and determines 22 CFCU Test Result is UNSAT due to flow obtained being below the minimum flow for current delta P IAW S2.OP-ST.CBV-0003.
This task is satisfactorily met when the applicant has placed the CFCU in the required test condition IAW step 4.1.2 of S2.OP-SO.CBV-0001, obtained the required test data, and determines 22 CFCU Test Result is UNSAT due to flow obtained being below the minimum flow for current delta P IAW S2.OP-ST.CBV-0003.
▶ Show Critical Steps & Key Actions
| Step | Critical Element | Standard |
|---|---|---|
| 3.0 | P&L 3.4: If measured DP value is between DP values in Exhibit 1, select minimum flow for next higher DP value | Reads and initials all P&Ls. Understanding P&L 3.4 is important to properly determining which DP value to choose. |
| 5.1.1.A | Ensure CFCU being tested is in LOW SPEED IAW S2.OP-SO.CBV-0001 | Goes to S2.OP-SO.CBV-0001 to place CFCU in low speed. |
| 5.1.2.A * | Press FAN HIGH SPEED STOP bezel for 22 CFCU | Depresses HIGH SPEED STOP bezel for 22 CFCU and verifies STOP bezel illuminates. |
| 5.1.2.B * | Ensure FAN STOP bezel is illuminated | Verifies HIGH SPEED STOP bezel is illuminated. |
| 5.1.2.C * | When 25 seconds have elapsed, press FAN LOW SPEED START bezel | Waits 25 seconds from when HIGH SPEED STOP was depressed. Depresses LOW SPEED START bezel for 22 CFCU and verifies START bezel illuminates. |
| 5.1.2.D | Ensure dampers are in indicated positions | Verifies: ROUGH FLT DAMPER CLOSED bezel extinguished; HEPA INLET DAMPER OPEN bezel illuminated; HEPA OUTLET DAMPER OPEN bezel illuminated. |
| 5.1.2.E | If SW flow < 1465 gpm, stop CFCU | Determines SW flow > 1465 gpm, marks step N/A and continues. |
| 5.1.2.F | Ensure SW flow >= 1465 gpm | Verifies SW flow > 1465 gpm. Returns to S2.OP-ST.CBV-0003. |
| 5.1.1.B | Record Start Time | Records START time in applicable Attachment, Section 3.0. |
| 4.1.11.3 * | When at least 15 minutes elapsed, record stop time, SW flow, SW header DP, and determine Test Results | Records STOP time. Records SW flow on 22 CFCU (~1785 gpm). Contacts field NEO and records 21 SW Header DP of 106 psi. Determines 22 CFCU is UNSAT/Inoperable because Cooling Water Flow Rate (1785 gpm) is less than the Minimum Flow Rate (1811 gpm) required in Exhibit 1 at SW DP of 110 psi (per P&L 3.4, must use next higher DP value). |
Key Decision Point:
Step 4.1.11.3 is the discriminating step — the applicant must correctly apply P&L 3.4: with a measured SW header DP of 106 psi (between 105 and 110), they must select the minimum flow for the next HIGHER DP value (110 psi = 1811 gpm required). Since actual flow is ~1785 gpm, which is less than 1811 gpm, the test result is UNSAT. P&L 3.3 also requires CFCU SW flow rate >= 1465 gpm AND >= Min Flow Rate in Exhibit 1 to be Operable.
Step 4.1.11.3 is the discriminating step — the applicant must correctly apply P&L 3.4: with a measured SW header DP of 106 psi (between 105 and 110), they must select the minimum flow for the next HIGHER DP value (110 psi = 1811 gpm required). Since actual flow is ~1785 gpm, which is less than 1811 gpm, the test result is UNSAT. P&L 3.3 also requires CFCU SW flow rate >= 1465 gpm AND >= Min Flow Rate in Exhibit 1 to be Operable.
Ref: S2.OP-ST.CBV-0003 (R20), S2.OP-SO.CBV-0001 | Task: N0220130201 | System: 022 Containment Cooling System | K/A: A1.04 — Ability to predict and/or monitor changes in parameters associated with operation of the Containment Cooling System: Cooling water flow | Source: Bank | View JPM PDF
Connections
- Related procedures: S2.OP-ST.CBV-0003 — Containment Cooling Systems Surveillance, S2.OP-SO.CBV-0001 — Containment Ventilation Operation
- Related systems: CFCUs, Service Water
- Related exam: 2023 NRC Operating Exam