JPM Sim-f — Perform 22 CFCU Surveillance Test IAW S2.OP-ST.CBV-0003
Sim | RO/SRO | 022 A1.04 (3.2/3.3)
Location: Simulator
Time-Critical: No
Alternate Path: No
Estimated Time: 8 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: 8 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:
PERFORMS surveillance test IAW S2.OP-ST.CBV-0003 and determines 22 CFCU Test Results is UNSAT.
PERFORMS surveillance test IAW S2.OP-ST.CBV-0003 and determines 22 CFCU Test Results is UNSAT.
▶ Show Critical Steps & Key Actions
| Step | Critical Element | Standard |
|---|---|---|
| 3.0 | PRECAUTIONS AND LIMITATIONS | Reads and initials all P&Ls. |
| P&L 3.4 | After recording DP reading, select corresponding minimum flow value from Exhibit 1. IF measured DP is between DP values in Exhibit 1, THEN select minimum flow for next higher DP value | Reads and understands P&L 3.4 (e.g., if measured DP is 101 psid, use minimum flow required at 105 psid). |
| 5.1.1 * | ENSURE CFCU being tested is in LOW SPEED IAW S2.OP-SO.CBV-0001 | Goes to S2.OP-SO.CBV-0001, Containment Ventilation Operation, to place CFCU in LOW SPEED. |
| 5.1.2 * | PRESS FAN HIGH SPEED STOP bezel | Depresses HIGH SPEED STOP bezel for 22 CFCU and verifies STOP bezel illuminates. |
| NOTE | Steps 5.1.2B and 5.1.2C should be coordinated for 25 second delay prior to energizing slow speed windings | Reads Note and continues on. |
| 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 from pressing HIGH SPEED STOP, PRESS FAN LOW SPEED START bezel | Waits 25 seconds from when HIGH SPEED STOP bezel was depressed. Depresses LOW SPEED START bezel for 22 CFCU and verifies START bezel illuminates. |
| 5.1.2.D | ENSURE following dampers are in indicated positions | Verifies for 22 CFCU: ROUGH FLT DAMPER CLOSED bezel extinguished, HEPA INLET DAMPER OPEN bezel illuminated, HEPA OUTLET DAMPER OPEN bezel illuminated. |
| 5.1.2.E | IF Service Water flow is less than 1465 gpm, THEN STOP the CFCU | Determines SW flow is > 1465 gpm and marks step N/A. |
| 5.1.2.F | ENSURE Service Water flow >= 1465 gpm | Verifies SW flow > 1465 gpm. |
| 5.1.1.B | RECORD Start Time | Returns to S2.OP-ST.CBV-0003. Records START time. |
| 5.1.1.C * | WHEN at least 15 minutes has elapsed, RECORD: Stop Time, SW flow, SW header DP | CUE: 15 minutes have elapsed. Records STOP time. Records SW flow on 22 CFCU (1787 +/- 5 gpm). Contacts field NEO and records SW header DP of 106 psi. |
| 5.1.1.C (cont'd) * | Determine Test Results: SAT or UNSAT | Records Test Results as UNSAT. 22 CFCU is Inoperable based on Cooling Water Flow Rate (~1787 gpm) being less than the Minimum Flow Rate (1811 gpm) required in Exhibit 1 by selecting a SW DP of 110 psi (per P&L 3.4, measured DP of 106 psi rounds up to 110 psid). |
Key Decision Point:
At Step 5.1.1.C, the applicant must correctly apply P&L 3.4 to determine the test result. The measured SW header DP is 106 psi, which falls between 105 and 110 psid in Exhibit 1. Per P&L 3.4, the applicant must use the next HIGHER DP value (110 psid), which requires a minimum flow rate of 1811 gpm. Since the actual CFCU flow is approximately 1787 gpm (less than 1811 gpm required), the test result is UNSAT and 22 CFCU is inoperable. A common error would be selecting 105 psid (minimum flow 1769 gpm), which would incorrectly yield a SAT result.
At Step 5.1.1.C, the applicant must correctly apply P&L 3.4 to determine the test result. The measured SW header DP is 106 psi, which falls between 105 and 110 psid in Exhibit 1. Per P&L 3.4, the applicant must use the next HIGHER DP value (110 psid), which requires a minimum flow rate of 1811 gpm. Since the actual CFCU flow is approximately 1787 gpm (less than 1811 gpm required), the test result is UNSAT and 22 CFCU is inoperable. A common error would be selecting 105 psid (minimum flow 1769 gpm), which would incorrectly yield a SAT result.
Ref: S2.OP-ST.CBV-0003 (Rev 20) | Task: N0220130201 | K/A: 022 A1.04 — Ability to predict and/or monitor changes in parameters associated with CFCU operation | 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: 2019 NRC Operating Exam