France Grants ITER Vacuum Vessel Key Regulatory Exemption from Pressure Rules

On April 14, 2026, France's nuclear safety authority (ASNR — Autorité de sûreté nucléaire et de radioprotection) approved exempting ITER's vacuum vessel from French and European pressure equipment regulations. The ruling recognizes that electromagnetic forces — not coolant pressure — determine the structural design requirements of a tokamak vacuum vessel, making conventional pressure equipment standards inapplicable. The vessel will remain subject to nuclear safety oversight as a Protection Important Component. ITER Director-General Pietro Barabaschi stated the decision would 'contribute to the consolidation of appropriate technical standards for tokamak magnetic confinement fusion devices,' facilitating project progress while maintaining robust safety requirements. The ruling represents a significant step toward developing fusion-specific regulatory frameworks — distinct from standards derived from fission reactor practice — and sets a precedent for future fusion projects globally.