ASME BPVC Section III, Division 4: Fusion Energy Devices, 2023

The ASME Boiler and Pressure Vessel Code (BPVC) Section III, Division 4 – 2023 provides comprehensive construction rules for components in fusion energy devices, marking a major step toward codifying safety and engineering standards in fusion power development. This section applies to structural and pressure-retaining components subject to the unique operational and environmental demands of fusion facilities.

Highlights:

• Construction requirements for magnetic confinement systems, vacuum vessels, in-vessel components, and pressure boundaries
• General design rules including design-by-analysis for fusion systems
• Coverage of electrical/mechanical penetration assemblies, port structures, and cryostat interfaces
• Material selection, testing, and welding provisions specific to fusion applications
• Classification guidance for fusion plant systems and jurisdictional boundaries
• Requirements for inspection, certification, documentation, and quality assurance
• Fully integrates with other BPVC sections (e.g., Sections II, V, VIII, IX) for cross-discipline consistency

Who It’s For:
Nuclear engineers, fusion researchers, designers, and code compliance officials working on fusion-based facilities and components that demand codified reliability and structural integrity under evolving technologies.

BPVC.III.4-2023