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Exams > 2022 Q16 — SW Valve Room Leak Source

2022 Q16 — SW Valve Room Leak Source

⚠️ DRAFT
Q16 — SW Valve Room Leak Source APE62 AA2.02 (2.9)
Given:

• Salem 2 is at 100% Power
• The following OHA alarms are received:
- OHA B-13, 21 SW HDR PRESS LO, is LIT
- OHA B-14, 22 SW HDR PRESS LO, is LIT
- OHA B-15, TURB AREA SW HDR PRESS LO, is LIT
- OHA B-48, SW VLV RM FLOODED, is LIT
• The standby Service Water (SW) Pump starts automatically and OHAs B-13, B-14, and B-15 are now clear.

Which ONE of the following describes the reason for the loss of SW?

SW leak is on piping associated with a...
A. CFCU.
B. Main Turbine Lube Oil Cooler.
C. Charging Pump Room Cooler.
D. Control Room Chiller condenser unit.
▶ Show Answer & Explanation
✓ A. Correct. OHA B-48, SW VLV RM FLOODED indicates that the SW leak is inside the SW valve room located on the 78' Mechanical Penetration Area. CFCU piping is located inside this room before it goes into Containment. A leak on the CFCU piping in this area would give the indications for OHA B-48.
✗ B. Incorrect. Plausible because the candidate may believe that OHA B-15 is indicative of a SW leak in the Turbine Building.
✗ C. Incorrect. Plausible because the candidate may believe that the Charging Room cooler leak is located in the 78' Mechanical Penn Area associated with the SW Valve Room.
✗ D. Incorrect. Plausible because the candidate may believe that the Chiller condenser unit leak is located in the 78' Mechanical Penn Area associated with the SW Valve Room.
Ref: S2.OP-AB.SW-0001 | LO: NOS05ABSW01, Obj 3 — Describe, in general terms, the actions taken in S1/S2.OP-AB.SW-0001 and the bases for the actions in accordance with the Technical Bases Document | Source: Bank — Salem | Cognitive: Comprehension/Analysis

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