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Exams > 2023 JPM Sim-d — Initiate Bleed and Feed Using Reactor Head Vents

2023 JPM Sim-d — Initiate Bleed and Feed Using Reactor Head Vents

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JPM Sim-d — Initiate Bleed and Feed Using Reactor Head Vents Sim | RO/SRO | A2.04 (4.5/4.5)
Location: Simulator
Time-Critical: No
Alternate Path: Yes
Estimated Time: 8 minutes

Initial Conditions:
- Unit 2 was manually tripped at 90% power due to elevated main turbine vibrations IAW S2.OP-AB.TL-0001.
- An inadvertent feedwater isolation actuation occurred resulting in the loss of all main feedwater.
- Loss of all AFW flow occurred when all AFW pumps tripped.
- The crew has entered 2-EOP-FRHS-1 due to valid RED Path on Heat Sink CFST based on all SG NR levels < 9% and AFW flow < 22E4 lbm/hr.
- Plant conditions have continued to deteriorate and three (3) steam generator Wide Range levels are now less than 20%.
- MSPI AFW pump failed to start.
- The CRS is implementing the CAS action to Initiate Bleed and Feed.

Initiating Cue:
- You are the Reactor Operator.
- The CRS has directed you to Initiate Bleed and Feed starting at Step 11 IAW 2-EOP-FRHS-1, Response to Loss of Secondary Heat Sink.
- Your evaluator will respond to all alarms not related to your task.
Task Standard:
The task is satisfactorily met when the applicant has actuated Safety Injection, opened one Pressurizer PORV, and opened 2RC40 - 43 RCS head vent valves IAW steps 11, 13, and 14 of 2-EOP-FRHS-1.
▶ Show Critical Steps & Key Actions
Step Critical Element Standard
C11-1 CAUTION: Steps 11 thru 14 must be performed quickly to establish RCS heat removal by Bleed and Feed Reads the Caution and continues.
11 * Actuate both trains of SI Initiates SI by inserting key and turning switch clockwise until the SI Operate bezel illuminates and the SI Reset bezel extinguishes.
12 Is centrifugal Charging Pump flow indicated? YES — reports BIT flow is established by indication on Charging flowmeter.
12 (cont'd) Are all SI pumps running? YES — reports that both SI pumps are running by START PBs illuminated Red.
13 Is power available to BOTH PZR PORV stop valves? YES — reports power is available to both stop valves.
13 (cont'd) Are ALL PZR PORV Stop Valves OPEN? Reports that both PZR PORV Stop Valves are OPEN as indicated by 2PR6 and 2PR7 OPEN bezels illuminated.
13 * (cont'd) Open ALL PZR PORVs Places both PZR PORVs in Manual and depresses OPEN PBs for 2PR1 and 2PR2. Reports that 2PR2 will NOT OPEN.
14 Are ALL PZR PORVs Open? NO — reports that 2PR2 will NOT OPEN. (Alternate path begins here.)
14 * (cont'd) Open 2RC40 thru 2RC43 (Reactor Head Vents) At the 2RP2 backpanel, obtains keys and inserts key into each keyswitch one at a time and turns clockwise until the OPEN indicator illuminates.
Key Decision Point:
Step 14 is the alternate path / discriminating step — 2PR2 fails to open, so the applicant must recognize that NOT all PORVs are open and proceed to open the Reactor Head Vent valves (2RC40 through 2RC43) as an alternate bleed path. This requires going to the 2RP2 backpanel and using keys to open each vent valve individually.
Ref: 2-EOP-FRHS-1 (R41) | Task: 1150290501 | System: 002 Reactor Coolant System | K/A: A2.04 — Ability to predict the impacts of Loss of heat sinks on the RCS and use procedures to correct, control, or mitigate the consequences | Source: Bank | View JPM PDF

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