This Standard provides requirements for the design, fabrication, inspection, testing, marking, and stamping of pressure vessels for human occupancy, having an internal or external pressure differential exceeding 2 psi. This Standard also provides requirements for the design, fabrication, inspection, testing, cleaning, and certification of piping systems for PVHOs. A PVHO is a pressure vessel that encloses a human being within its pressure boundary while it is under internal or external pressure that exceeds a 2 psi differential pressure. PVHOs include, but are not limited to, submersibles, diving bells, personnel transfer capsules, decompression chambers, recompression chambers, hyperbaric chambers, high altitude chambers, and medical hyperbaric oxygenation facilities. This does not include nuclear reactor containments, pressurized airplane and aerospace vehicle cabins, and caissons.
ASME PVHO-1-2007 history
1970ASME PVHO-1-2023 Safety Standard for Pressure Vessels for Human Occupancy
2019ASME PVHO-1-2019 Safety Standard for Pressure Vessels for Human Occupancy
2016ASME PVHO-1-2016 Safety Standard for Pressure Vessels for Human Occupancy
2012ASME PVHO-1-2012 Safety Standard for Pressure Vessels for Human Occupancy
2011ASME PVHO-1 INTERPRETATIONS-2011 Interpretations to PVHO-1997 Safety Standard for Pressure Vessels for Human Occupancy (Includes Interpretations Volumes 1, 3, 4 and 6)
2007ASME PVHO-1-2007 Safety Standard for Pressure Vessels for Human Occupancy
2002ASME PVHO-1-2002 Safety Standard for Pressure Vessels for Human Occupancy
1997ASME PVHO-1-1997 Safety standards for pressure vessels for human occupancy
1993ASME PVHO-1-1993 Safety standards for pressure vessels for human occupancy