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Exams > 2022 Q61 — SFP Makeup Water Sources

2022 Q61 — SFP Makeup Water Sources

⚠️ DRAFT
Q61 — SFP Makeup Water Sources 033 K1.05 (2.7)
Given:

• Unit 1 is at 100% Power.
• Spent Fuel Pool makeup is required when responding to OHA C-36, SFP LVL LO, which has been determined to be caused by normal evaporation over the course of several months.

In accordance with S1.OP-SO.SF-0001, Fill and Transfer of the Spent Fuel Pool, which ONE of the following is the LEAST preferred source of makeup water to the Spent Fuel Pool?
A. Demineralized Storage Tank
B. Primary Water Storage Tank
C. CVCS Holdup Tanks
D. Refueling Water Storage Tank
▶ Show Answer & Explanation
✓ D. Correct. Per S1.OP-SO.SF-0001 prerequisite step 2.3, the preferred order of SFP makeup water sources are: Demineralized Water, Primary Water, CVCS Holdup Tanks, and RWST or Refueling Cavity. Therefore, using the RWST as a makeup source is the least preferred.
✗ A. Incorrect. Plausible because the Demineralized Storage Tank is one of the sources of makeup, but it is the first preferred source of makeup to the SFP.
✗ B. Incorrect. Plausible because the Primary Water Storage Tank is one of the sources of makeup, but it is the second preferred source of makeup to the SFP.
✗ C. Incorrect. Plausible because the CVCS Holdup Tanks are one of the sources of makeup, but it is the third preferred source of makeup to the SFP.
Ref: S1.OP-SO.SF-0001 (R20) | LO: NOS05SFP000-12, Obj 11 — Discuss the procedural requirements associated with the Spent Fuel Pool Cooling System, including an explanation of major precaution and limitations in the Spent Fuel Pool Cooling procedures | Source: Bank — Salem 2016 NRC RO46 | Cognitive: Fundamental/Memory

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