JPM SRO-A3 — Determine Technical Specification Action for Inoperable Component
Admin | SRO | G2.2.40 (4.7)
Location: Classroom (Administrative)
Time-Critical: No
Alternate Path: No
Estimated Time: 10 minutes
Initial Conditions:
- Salem 1 is at 100% power.
- 12 Charging pump is in service.
- 1B EDG is CIT for scheduled maintenance. TS 3.8.1.1 action b was entered with 60 hours remaining of the LCO.
- S1.OP-SO.DG-0005, Preparation for Removing a Diesel Generator from Service, was reviewed by the CRS prior to CIT the 1B EDG.
At 0700 hours:
- 12 Charging pump trips.
- Crew responds to the event and enters S1.OP-AB.CVC-0001 and starts 13 Charging pump and restores letdown and PZR level.
Initiating Cue:
You are the Unit 1 CRS.
Evaluate the impact to Technical Specifications and DETERMINE the following:
1. What LCO action(s) are applicable at 0700 hours?
2. At 1100 hours you're notified that 12 Charging pump troubleshooting is still ongoing and 1B EDG will need 6 hours to restore from maintenance. What action(s) are required and by what times?
Time-Critical: No
Alternate Path: No
Estimated Time: 10 minutes
Initial Conditions:
- Salem 1 is at 100% power.
- 12 Charging pump is in service.
- 1B EDG is CIT for scheduled maintenance. TS 3.8.1.1 action b was entered with 60 hours remaining of the LCO.
- S1.OP-SO.DG-0005, Preparation for Removing a Diesel Generator from Service, was reviewed by the CRS prior to CIT the 1B EDG.
At 0700 hours:
- 12 Charging pump trips.
- Crew responds to the event and enters S1.OP-AB.CVC-0001 and starts 13 Charging pump and restores letdown and PZR level.
Initiating Cue:
You are the Unit 1 CRS.
Evaluate the impact to Technical Specifications and DETERMINE the following:
1. What LCO action(s) are applicable at 0700 hours?
2. At 1100 hours you're notified that 12 Charging pump troubleshooting is still ongoing and 1B EDG will need 6 hours to restore from maintenance. What action(s) are required and by what times?
Task Standard:
1. Determines TS 3.8.1.1 action b.2 (4 hours) and 3.5.2.a action a (72 hours) are applicable.
2. At 1100 hours, be in Mode 3 at 1700 hours and Mode 5 at 2300 hours the next day.
1. Determines TS 3.8.1.1 action b.2 (4 hours) and 3.5.2.a action a (72 hours) are applicable.
2. At 1100 hours, be in Mode 3 at 1700 hours and Mode 5 at 2300 hours the next day.
▶ Show Critical Steps & Key Actions
| Step | Critical Element | Standard |
|---|---|---|
| 1.0 | Review S1.OP-SO.DG-0005 to identify redundant required features for 1B EDG | CRS reviews procedure to determine what components are redundant required features powered from the 1B EDG bus. |
| 2.0 * | Determine applicable LCOs at 0700 hours | Operator determines the following Tech Spec LCOs are applicable: (1) TS 3.5.2.a Action a (72 hours) for 12 Charging pump being inoperable, and (2) TS 3.8.1.1 Action b.2 (4 hours) for 1B EDG and redundant component (12 Charging pump) inoperable. |
| 3.0 * | Determine required actions at 1100 hours | SRO determines that at 1100 hours the Unit must be in Mode 3 at 1700 hours and Mode 5 at 2300 hours the next day (Mode 3 in next 6 hours and Mode 5 within the following 30 hours). |
Key Decision Point:
The applicant must recognize that the 12 Charging pump is a redundant required feature supported by the 1B EDG (per S1.OP-SO.DG-0005). When 12 Charging pump trips while the 1B EDG is already CIT, TS 3.8.1.1 action b.2 applies — 4 hours to restore the inoperable EDG OR the redundant required feature, otherwise shutdown per TS 3.0.3 (Mode 3 in 6 hours, Mode 5 in the following 30 hours). Separately, TS 3.5.2.a action a gives 72 hours to restore one ECCS subsystem (charging). At 1100 hours, 4 hours have elapsed since 0700 — neither the EDG nor the charging pump will be restored in time, so the shutdown actions begin immediately: Mode 3 by 1700 and Mode 5 by 2300 the next day. TS 3.0.3 is NOT appropriate because specific action statements (b.2) exist for this condition.
The applicant must recognize that the 12 Charging pump is a redundant required feature supported by the 1B EDG (per S1.OP-SO.DG-0005). When 12 Charging pump trips while the 1B EDG is already CIT, TS 3.8.1.1 action b.2 applies — 4 hours to restore the inoperable EDG OR the redundant required feature, otherwise shutdown per TS 3.0.3 (Mode 3 in 6 hours, Mode 5 in the following 30 hours). Separately, TS 3.5.2.a action a gives 72 hours to restore one ECCS subsystem (charging). At 1100 hours, 4 hours have elapsed since 0700 — neither the EDG nor the charging pump will be restored in time, so the shutdown actions begin immediately: Mode 3 by 1700 and Mode 5 by 2300 the next day. TS 3.0.3 is NOT appropriate because specific action statements (b.2) exist for this condition.
Ref: S1.OP-SO.DG-0005 (Rev 9), Salem Unit 1 Tech Specs | Task: 112670302 | K/A: G2.2.40 — Ability to apply Technical Specifications for a system (SRO Only) | Source: New | View JPM PDF
Connections
- Related systems: EDGs, ECCS, CVCS
- Related procedures: S1.OP-SO.DG-0005 — EDG Operability Determination, AB.CVC-0001 — Loss of Charging
- Related tech specs: TS 3/4.8 — Electrical, TS 3/4.5 — ECCS
- Related exam: 2019 NRC Operating Exam