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Exams > 2019 JPM Sim-b — Transfer To Hot Leg Recirculation

2019 JPM Sim-b — Transfer To Hot Leg Recirculation

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JPM Sim-b — Transfer To Hot Leg Recirculation IAW EOP-LOCA-4 Sim | RO/SRO | 006 A4.05 (3.9/3.8)
Location: Simulator
Time-Critical: No
Alternate Path: No
Estimated Time: 5 minutes

Initial Conditions:
- Unit 2 experienced a Large Break LOCA.
- The crews have completed actions to transfer to Cold Leg Recirculation IAW EOP-LOCA-3 and have transitioned back to EOP-LOCA-1.
- 22 SI pump tripped during LOCA-3 and is being investigated.
- 21 RHR pump and 21SJ45 were C/T for scheduled maintenance prior to the event.
- The crew has just reached the 4.5 hour wait time at Step 26 of EOP-LOCA-1.

Initiating Cue:
- You are the Reactor Operator.
- The CRS has directed you to continue with EOP-LOCA-1 starting at Step 27.
- Your evaluator will respond to all alarms not related to your task.
Task Standard:
Align RCS for Hot Leg Recirculation IAW 2-EOP-LOCA-4 Steps 3 thru 4.
▶ Show Critical Steps & Key Actions
Step Critical Element Standard
27 * DEPRESS "CLOSE" PUSHBUTTON FOR 21 AND 22 SJ40 (Hot Leg Discharge Valves) Depresses CLOSE PB for 21 and 22 SJ40 on 2CC1.
27.1 * REMOVE LOCKOUTS FOR 21 AND 22 SJ40 (Hot Leg Discharge Valves) Places 21 and 22 SJ40 Lockout CMC switches to "Valve Operable" and verifies Valve Operable backlight illuminates.
27.1 (cont'd) ARE "VALVE OPERABLE" BACKLIGHTS LIT FOR 21SJ40 AND 22SJ40? YES — verifies Valve Operable backlights are lit on 2RP4 for both 21 and 22 SJ40.
28 WAIT UNTIL 6.5 HOURS HAVE ELAPSED SINCE SI ACTUATION CUE: 6.5 hours has elapsed since SI actuation. CRS directs transfer to Hot Leg Recirculation by performing EOP-LOCA-4.
LOCA-4 Step 1 ARE BOTH RHR PUMPS RUNNING? Determines that ONLY 22 RHR Pump is running (21 RHR pump is C/T). Goes to Step 3.
3 IS 22 RHR Pump Running? YES — determines that 22 RHR Pump is running.
4 * CLOSE 22CS36 (RHR SUPPLY TO CS VALVE) Depresses CLOSE PB for 22CS36 and verifies CLOSE PB illuminates.
4 (cont'd) IS 21SJ45 (RHR DISCHARGE TO SI PUMPS VALVE) OPEN? NO — determines 21SJ45 is CLOSED due to 21 RHR pump maintenance. (Alternate Path #1)
4 (cont'd) * OPEN 22SJ49 (COLD LEG ISOLATION VALVE) Depresses OPEN PB for 22SJ49 and verifies OPEN PB illuminates.
4.1 IS 22 SI Pump Running? NO — determines 22 SI pump is NOT running (tripped during LOCA-3). Goes to step 6.1. (Alternate Path #2)
6.1 * STOP 21 SI Pump Depresses 21 SI Pump STOP PB on 2CC1 and verifies STOP PB illuminates.
6.1 (cont'd) * CLOSE 21SJ134 (Cold Leg Discharge Valve) Depresses CLOSE PB for 21SJ134 on 2CC1 and verifies CLOSE PB illuminates.
6.1 (cont'd) * OPEN 21SJ40 (Hot Leg Discharge Valve) Opens 21SJ40 by inserting key and rotating; verifies OPEN PB illuminates.
6.1 (cont'd) * START 21 SI Pump Depresses START PB for 21 SI Pump and verifies START PB illuminates.
End Return to Procedure in Effect JPM is complete when operator returns to procedure in effect.
Key Decision Point:
This JPM has two alternate path decision points. First, at Step 4 (cont'd), the applicant must recognize that 21SJ45 is CLOSED for 21 RHR pump maintenance, so the RHR-to-SI pump cross-connect path is unavailable. Second, at Step 4.1, the applicant must recognize that 22 SI pump is NOT running (tripped during LOCA-3) and navigate to Step 6.1, which uses 21 SI pump for Hot Leg injection: STOP 21 SI Pump, CLOSE 21SJ134 (cold leg discharge), OPEN 21SJ40 (hot leg discharge, key-locked), START 21 SI Pump.
Ref: 2-EOP-LOCA-4 (Rev 30), 2-EOP-LOCA-1 (Rev 31) | Task: N1150110501 | K/A: 006 A4.05 — Ability to manually operate and/or monitor ECCS | Source: New | View JPM PDF

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