Does a Mild Hyperbaric Chamber Require ASME PVHO-1?

Question

Accepted Answer

Not universally. Whether PVHO-1 applies depends on the vessel’s design, occupancy, pressure conditions, applicable law, adopted codes, and the authority having jurisdiction. PVHO-1 is an engineering safety standard; it is not the same thing as an ASME certification or a blanket federal requirement. A facility should document the chamber’s specifications and obtain qualified engineering and local regulatory advice before deciding what standard, inspection, or certification pathway applies.