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Exams > 2023 Q92 — PZR Pressure Channel Failure / NRC Reportability

2023 Q92 — PZR Pressure Channel Failure / NRC Reportability

⚠️ DRAFT
Q92 — PZR Pressure Channel Failure / NRC Reportability T2G2 016 A2.01 (3.4)
Given:
- Salem Unit 2 is at 100% power
- PZR Pressure Channel I failed and has been removed from service per S2.OP-SO.RPS-0003, Placing Pressurizer Channel in Tripped Condition

Then:
- PZR Pressure Channel III fails LOW

Based on the conditions above, which of the following correctly identifies the MOST limiting time requirement for reportability to the NRC?

[REFERENCE PROVIDED]
A. 4 hour report under RAL# 11.3.1
B. 4 hour report under RAL# 11.3.2
C. 8 hour report under RAL# 11.3.3
D. 60 day report under RAL# 11.3.4
▶ Show Answer & Explanation
✓ B. Correct. Following the second PZR pressure failing low, a Safety Injection and Rx Trip will occur on low PZR pressure. Since the RCS pressure was not actually low to meet SI actuation, the SI is NOT valid and NOT reportable. However, actuation of RPS is still reportable under RAL 11.3.2 as a 4 hour report based on actuation of the RPS system only, but SI is NOT. Although RPS is a system listed in Technical Bases 11.3.3, it is not reported under this RAL since it will be reported under RAL 11.3.2.
✗ A. Plausible because the SRO may believe that this was a valid SI actuation and reportable under RAL 11.3.1 as 4 hour report.
✗ C. Plausible because the SRO may incorrectly interpret that with the SI actuating ECCS, that this is reportable under RAL 11.3.3 as 8 hour report.
✗ D. Plausible because the SRO may believe that the RPS and SI actuations are both INVALID, and since it's a system listed in Technical Bases 11.3.3, then only a 60 day report under RAL 11.3.4 is required.
Ref: Salem RAL 11.3 (R4) | LO: NOS05SENSOR-03 | Source: New | Cognitive: Comprehension/Analysis

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