{"data":{"id":"us/46-cfr-197.332","jurisdiction":"us","citation":"46 CFR 197.332","heading":"PVHO—Decompression chambers.","body":"Each decompression chamber must—\n(a) Meet the requirements of § 197.328;\n(b) Have internal dimensions sufficient to accommodate a diver lying in a horizontal position and another person tending the diver;\n(c) Have a capability for ingress and egress of personnel and equipment while the occupants are under pressure;\n(d) Have a means of operating all installed man-way locking devices, except disabled shipping dogs, from both sides of a closed hatch;\n(e) Have interior illumination sufficient to allow visual observation, diagnosis, and medical treatment of an occupant.\n(f) Have one bunk for each two occupants;\n(g) Have a capability that allows bunks to be seen over their entire lengths from the exterior;\n(h) Have a minimum pressure capability of—\n(1) 6 ATA, when used for diving to 300 fsw; or\n(2) The maximum depth of the dive, when used for diving operations deeper than 300 fsw, unless a closed bell meeting the requirements of § 197.330(a) (3), (4), and (5) is used;\n(i) Have a minimum pressurization rate of 2 ATA per minute to 60 fsw and at least 1 ATA per minute thereafter;\n(j) Have a decompression rate of 1 ATA per minute to 33 fsw;\n(k) Have an external pressure gage for each pressurized compartment;\n(l) Have a capability to supply breathing mixtures at the maximum rate required by each occupant doing heavy work; and\n(m) Have a sound-powered headset or telephone as a backup to the communications system required by § 197.328(c) (5) and (6), except when that communications system is a sound-powered system.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER V—MARINE OCCUPATIONAL SAFETY AND HEALTH STANDARDS","PART 197—GENERAL PROVISIONS","Subpart B—Commercial Diving Operations"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"c957434d71051a96620054a7c73600ce5d729bc57baed71dced934b951225930","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-197.330","next":"us/46-cfr-197.334"},"notice":"GroundRules: Original legal text. Not legal advice."}