2022 Q36 — CCW Sources of RCS Inleakage

✓ D. Correct. IAW S2.OP-AB.CC-0001 Step 3.10, the RCP Thermal Barriers, Letdown HX, and Seal Water HX are all sources of RCS inleakage into the CCW system.

✗ A. Incorrect. A leak at the spent fuel pool HX would cause out leakage of the CCW system. Plausible since a leak in the thermal barrier would cause RCS leakage into CCW.

✗ B. Incorrect. Plausible since a leak in the CCW HX would result in leakage into the CCW but it would be Service Water and not RCS.

✗ C. Incorrect. Plausible since the CCW HX would result in leakage into CCW, but CCW HX is SW leakage into RCS. In addition, the applicant may confuse the operation of the Regen HX and believe that the discharge of charging would leak into CCW which CCW does not cool the Regen HX, but letdown flow does.

Ref: S2.OP-AB.CC-0001 (R19) | LO: NOS05ABCC01-10, Obj 1 — Describe the operation of the CC System loads as applied to S2.OP-AB.CC-0001 | Source: Bank — Salem | Cognitive: Fundamental/Memory