Which regulation is described by ASME BPVC Section III?

• A. Electrical wiring standards for auxiliary systems
• B. Nuclear reactor construction, materials, and workmanship requirements for safety-related components
• C. Fuel handling procedures
• D. Cooling water chemistry guidelines

Answer: (B)

ASME BPVC Section III sets the rules for constructing nuclear reactor safety-related components. It covers the materials, workmanship, fabrication, welding, nondestructive examination, testing, and quality assurance needed for components that form the reactor coolant boundary and other critical safety systems. The other topics listed (electrical wiring standards for auxiliary systems, fuel handling procedures, cooling water chemistry guidelines) are governed by different codes, standards, or plant procedures, not Section III. Therefore, the regulation described by ASME BPVC Section III is nuclear reactor construction, materials, and workmanship requirements for safety-related components.