Which system's chemistry is described as 'Secondary System Chemistry'?

• A. Primary Coolant Chemistry
• B. Contamination System Chemistry
• C. Secondary System Chemistry
• D. Fuel Handling Chemistry

Answer: (C)

Secondary System Chemistry describes the chemistry program for the plant’s secondary loop—the steam and feedwater side of the system. This loop, including feedwater, condensate, and the steam generators or heat exchangers, is kept chemically distinct from the reactor’s primary coolant so that corrosion and deposition in the turbine and boiler areas are minimized without affecting the reactor coolant chemistry.

The phrase itself points to the secondary loop, making it the best answer because it names the specific system whose chemistry is being discussed. In contrast, primary coolant chemistry governs the reactor coolant in the core circuit, fuel handling chemistry covers conditions during handling and storage of fuel, and contamination system chemistry concerns cleanup and removal of contaminants.