JPM SRO-A5 — Classify an Event and Complete ICMF IAW EP-SA-111-101
Admin | SRO | G2.4.41 (4.6)
Location: Classroom (Administrative)
Time-Critical: Yes (15 minutes)
Alternate Path: No
Estimated Time: 8 minutes
Initial Conditions:
- Salem 2 is at 100% power.
- The control room is responding to valid indications of a Steam Generator tube leak in 23 Steam Generator IAW S2.OP-AB.SG-0001.
- The RO reports that PZR level and RCS pressure are lowering rapidly.
- The CRS implemented the CAS of AB.SG-0001 to trip the Reactor and initiate Safety Injection.
- The crew is currently implementing 2-EOP-SGTR-1.
- 23 MS167 failed to close from the control room and the crew has initiated close on 21, 22, and 24 MS167's.
- Following the closing of the 21, 22, & 24 MS167's, the control room suddenly hears a loud roaring noise.
- The PO reports that 23 SG pressure is 850 psig and lowering rapidly and steam flows are approx. 12% and rising. All other SG pressures are stable around 995 psig with 0-1% steam flow.
- Met Tower data indicates wind from 105 degrees at 5 mph.
Initiating Cue:
You are the Unit 2 Control Room Supervisor (CRS).
CLASSIFY the event AND COMPLETE the ICMF IAW the applicable attachment.
The JPM will stop when you have submitted the ICMF to your evaluator.
THIS IS A TIME CRITICAL JPM.
Time-Critical: Yes (15 minutes)
Alternate Path: No
Estimated Time: 8 minutes
Initial Conditions:
- Salem 2 is at 100% power.
- The control room is responding to valid indications of a Steam Generator tube leak in 23 Steam Generator IAW S2.OP-AB.SG-0001.
- The RO reports that PZR level and RCS pressure are lowering rapidly.
- The CRS implemented the CAS of AB.SG-0001 to trip the Reactor and initiate Safety Injection.
- The crew is currently implementing 2-EOP-SGTR-1.
- 23 MS167 failed to close from the control room and the crew has initiated close on 21, 22, and 24 MS167's.
- Following the closing of the 21, 22, & 24 MS167's, the control room suddenly hears a loud roaring noise.
- The PO reports that 23 SG pressure is 850 psig and lowering rapidly and steam flows are approx. 12% and rising. All other SG pressures are stable around 995 psig with 0-1% steam flow.
- Met Tower data indicates wind from 105 degrees at 5 mph.
Initiating Cue:
You are the Unit 2 Control Room Supervisor (CRS).
CLASSIFY the event AND COMPLETE the ICMF IAW the applicable attachment.
The JPM will stop when you have submitted the ICMF to your evaluator.
THIS IS A TIME CRITICAL JPM.
Task Standard:
1. Classifies the event as a Site Area Emergency (SAE) — 8 points based on RB3.L (5 pts) and CB3.L (3 pts) or CB4.L (3 pts).
2. Properly completes sections I thru IV of the ICMF for the classified event.
1. Classifies the event as a Site Area Emergency (SAE) — 8 points based on RB3.L (5 pts) and CB3.L (3 pts) or CB4.L (3 pts).
2. Properly completes sections I thru IV of the ICMF for the classified event.
▶ Show Critical Steps & Key Actions
| Step | Critical Element | Standard |
|---|---|---|
| 1.0 * | Classify the event using Fission Product Barrier assessment | Operator classifies the event as a Site Area Emergency (SAE) based on Fission Product Barrier Section F — EAL#: RB3.L (5 pts) and CB3.L (3 pts) or CB4.L (3 pts). Total = 8 points, which meets SAE threshold. The SGTR with a stuck-open MSIV on the affected SG constitutes loss or potential loss of both the RCS barrier and the containment barrier (uncontrolled release path from RCS through ruptured SG tube through open MSIV to atmosphere). |
| 2.0 * | Select correct ICMF attachment for classification level | Operator selects EP-SA-111-F3, Attachment 3 for Site Area Emergency (not Attachment 1/UE, Attachment 2/Alert, or Attachment 4/GE). |
| 3.0 * | Complete ICMF Sections I thru IV | Operator accurately and completely fills out Sections I thru IV of the ICMF for Site Area Emergency (SAE) IAW EP-SA-111-F3, Attachment 3. Note: a release IS in progress due to the event (SGTR with stuck-open MSIV = unmonitored release path). |
Time-Critical:
This JPM must be completed within 15 minutes. The clock starts when the candidate acknowledges the initiating cue.
This JPM must be completed within 15 minutes. The clock starts when the candidate acknowledges the initiating cue.
Key Decision Point:
The applicant must recognize the fission product barrier status: (1) RCS barrier is lost — SGTR is a direct breach of the RCS pressure boundary (RB3.L = 5 pts), and (2) Containment barrier is lost or potentially lost — the stuck-open 23 MS167 (MSIV) creates an uncontrolled release path from the RCS through the ruptured 23 SG tube, out the open MSIV to atmosphere (CB3.L or CB4.L = 3 pts). Total of 8 points meets the SAE threshold. The loud roaring noise with rapidly lowering 23 SG pressure and rising steam flow confirms the stuck-open MSIV is passing steam to atmosphere. A release IS in progress via this path.
The applicant must recognize the fission product barrier status: (1) RCS barrier is lost — SGTR is a direct breach of the RCS pressure boundary (RB3.L = 5 pts), and (2) Containment barrier is lost or potentially lost — the stuck-open 23 MS167 (MSIV) creates an uncontrolled release path from the RCS through the ruptured 23 SG tube, out the open MSIV to atmosphere (CB3.L or CB4.L = 3 pts). Total of 8 points meets the SAE threshold. The loud roaring noise with rapidly lowering 23 SG pressure and rising steam flow confirms the stuck-open MSIV is passing steam to atmosphere. A release IS in progress via this path.
Ref: EP-SA-111-101 (Rev 01), EP-SA-111-121 (Rev 00), EP-SA-111-F3 (Rev 03), Salem ECG Books | Task: 1240020502 | K/A: G2.4.41 — Knowledge of the emergency action level thresholds and classifications (SRO Only) | Source: New | View JPM PDF
Connections
- Related systems: Steam Generator & Blowdown, RCS
- Related procedures: EP-SA-111-101 — Emergency Classification and ICMF, AB.SG-0001 — Steam Generator Tube Leak, EP-SA-325 — Emergency Plan Implementing Procedures
- Related EOPs: EOP-SGTR-1 — Steam Generator Tube Rupture
- Related exam: 2019 NRC Operating Exam