ASME BPVC Section III, Division 1, Subsection NE: Rules for Class MC Components, 2023

ASME BPVC Section III, Division 1, Subsection NE – 2023 provides mandatory requirements for the design, construction, inspection, and certification of Class MC (Metal Containment) components in nuclear facilities. These components form part of the primary containment structure, ensuring isolation of radioactive materials during normal operation and postulated events.

This subsection applies to metal containment vessels and their appurtenances, such as access openings, nozzles, and penetrations. It supports the construction of structures required to withstand pressure and environmental loads in high-integrity nuclear safety systems.

Highlights:

• Requirements for material selection, qualification, and documentation
• Design-by-analysis criteria and structural integrity limits for containment boundaries
• Fabrication rules including welding, forming, brazing, and joint design
• Nondestructive examination (NDE) methods and personnel qualification
• Hydrostatic and pneumatic testing procedures to verify leak-tightness and pressure integrity
• Criteria for overpressure protection, relief devices, and pressure monitoring
• Documentation and stamping requirements for ASME Code certification

Who It’s For:
Essential for nuclear engineers, containment designers, quality assurance specialists, and regulatory compliance personnel responsible for the construction and certification of Class MC components in nuclear containment systems.

BPVC.III.1.NE-2023