JPM SRO-A4 — Select Release Path for Radioactive Liquid Waste
Admin | SRO | G2.3.6 (3.8)
Location: Classroom
Time-Critical: No
Alternate Path: No
Estimated Time: 15 minutes
Initial Conditions:
- Unit 2 is in a refueling outage.
- ALL Unit 2 Circulators are out of service.
- 21 CCHX is in service at 1500 gpm and 22 CCHX is removed from service and drained.
- Salem Unit 1 is operating at 75% power.
- There are no active Tech Specs on Unit 1.
- 12A Circulator is C/T for waterbox cleaning.
- 11 and 12 CCHX's are in service.
- 12 CVCS Monitor Tank is in recirculation using 11 CVCS Monitor Tank Pump.
- Chemistry has granted permission to release the tank with a minimum dilution flow rate of 100000 gpm.
Initiating Cue:
You are the Unit 1 CRS.
DETERMINE which CCHX will be selected for the release of 12 CVCS Monitor Tank IAW S1.OP-SO.WL-0002, Attachment 2, Section 2.2 Release Verification.
Time-Critical: No
Alternate Path: No
Estimated Time: 15 minutes
Initial Conditions:
- Unit 2 is in a refueling outage.
- ALL Unit 2 Circulators are out of service.
- 21 CCHX is in service at 1500 gpm and 22 CCHX is removed from service and drained.
- Salem Unit 1 is operating at 75% power.
- There are no active Tech Specs on Unit 1.
- 12A Circulator is C/T for waterbox cleaning.
- 11 and 12 CCHX's are in service.
- 12 CVCS Monitor Tank is in recirculation using 11 CVCS Monitor Tank Pump.
- Chemistry has granted permission to release the tank with a minimum dilution flow rate of 100000 gpm.
Initiating Cue:
You are the Unit 1 CRS.
DETERMINE which CCHX will be selected for the release of 12 CVCS Monitor Tank IAW S1.OP-SO.WL-0002, Attachment 2, Section 2.2 Release Verification.
Task Standard:
Selects 21 CCHX to 12A AND/OR 12B CW Pumps in service as release path.
Selects 21 CCHX to 12A AND/OR 12B CW Pumps in service as release path.
▶ Show Critical Steps & Key Actions
| Step | Critical Element | Standard |
|---|---|---|
| 1 * | Determine which CCHX will be selected for the release of 12 CVCS Monitor Tank | Selects 21 CCHX to 12A AND/OR 12B CW Pumps in service as release flow path. |
Release Path Analysis:
The liquid radwaste release path goes from the CVCS Monitor Tank through a CC Heat Exchanger to the CW (Circulating Water) system discharge. The candidate must determine which CCHX provides adequate dilution flow:
- Unit 1 CCHXs (11 & 12): both in service, but 12A Circulator is C/T for waterbox cleaning. Unit 1 circulators may not provide 100000 gpm minimum dilution.
- Unit 2 CCHXs: ALL Unit 2 circulators are OOS. 22 CCHX is removed and drained.
- 21 CCHX: in service at 1500 gpm with 12A and/or 12B CW Pumps in service providing adequate dilution flow.
The correct release path uses 21 CCHX because it provides the required dilution flow path through CW Pumps that are in service.
The liquid radwaste release path goes from the CVCS Monitor Tank through a CC Heat Exchanger to the CW (Circulating Water) system discharge. The candidate must determine which CCHX provides adequate dilution flow:
- Unit 1 CCHXs (11 & 12): both in service, but 12A Circulator is C/T for waterbox cleaning. Unit 1 circulators may not provide 100000 gpm minimum dilution.
- Unit 2 CCHXs: ALL Unit 2 circulators are OOS. 22 CCHX is removed and drained.
- 21 CCHX: in service at 1500 gpm with 12A and/or 12B CW Pumps in service providing adequate dilution flow.
The correct release path uses 21 CCHX because it provides the required dilution flow path through CW Pumps that are in service.
Key Decision Point:
The candidate must evaluate all available release paths per S1.OP-SO.WL-0002 Section 2.2 and select the CCHX that has both an in-service heat exchanger AND adequate CW pump dilution flow (minimum 100000 gpm). With Unit 2 circulators OOS and 12A Circulator C/T, the 21 CCHX with 12A/12B CW Pumps in service is the correct release path.
The candidate must evaluate all available release paths per S1.OP-SO.WL-0002 Section 2.2 and select the CCHX that has both an in-service heat exchanger AND adequate CW pump dilution flow (minimum 100000 gpm). With Unit 2 circulators OOS and 12A Circulator C/T, the 21 CCHX with 12A/12B CW Pumps in service is the correct release path.
Ref: S1.OP-SO.WL-0002 (R31) | Task: N0680070302 | K/A: G2.3.6 — Ability to approve release permits | Source: Modified | View JPM PDF
Connections
- Related systems: Waste Liquid, Circ Water, CVCS
- Related procedures: S1.OP-SO.WL-0002 — Release of Radioactive Liquid Waste (Unit 1 CCHX Path)
- Related exam: 2020 NRC Operating Exam