What is located below the core?

What is located below the core?

• A. Secondary cooling loop.
• B. Decorative support structure.
• C. Primary piping which connects to the equipment pit.
• D. Excess hydrogen injection line.

Answer: (C)

Below the core sits the primary piping that connects to the equipment pit, forming the path of the Reactor Coolant System. This arrangement places the primary loop’s piping where the primary coolant pumps and associated components reside, allowing the coolant to circulate from the reactor vessel down into the equipment pit and back through the hot and cold legs. The secondary cooling loop, by contrast, is a separate circuit that handles heat transfer to the steam generators or other heat exchangers and isn’t located directly beneath the core. A decorative support structure isn’t part of the cooling flow, and the excess hydrogen injection line belongs to a different system altogether. So the primary piping linking to the equipment pit best matches what sits below the core.

Below the core sits the primary piping that connects to the equipment pit, forming the path of the Reactor Coolant System. This arrangement places the primary loop’s piping where the primary coolant pumps and associated components reside, allowing the coolant to circulate from the reactor vessel down into the equipment pit and back through the hot and cold legs. The secondary cooling loop, by contrast, is a separate circuit that handles heat transfer to the steam generators or other heat exchangers and isn’t located directly beneath the core. A decorative support structure isn’t part of the cooling flow, and the excess hydrogen injection line belongs to a different system altogether. So the primary piping linking to the equipment pit best matches what sits below the core.