46 C.F.R. § 197.312 Breathing supply hoses.
Title 46 - Shipping
(a) Each breathing supply hose must— (1) Have a maximum working pressure that is equal to or exceeds— (i) The maximum working pressure of the section of the breathing supply system in which used; and (ii) The pressure equivalent of the maximum depth of the dive relative to the supply source plus 100 psig; (2) Have a bursting pressure of four times its maximum working pressure; (3) Have connectors that— (i) Are made of corrosion-resistant material; (ii) Are resistant to accidental disengagement; and (iii) Have a maximum working pressure that is at least equal to the maximum working pressure of the hose to which they are attached; and (4) Resist kinking by— (i) Being made of kink-resistant materials; or (ii) Having exterior support. (b) Each umbilical must— (1) Meet the requirements of paragraph (a) of this section; and (2) Be marked from the diver or open bell end in 10-foot intervals to 100 feet and in 50-foot intervals thereafter.
Title 46: Shipping
PART 197—GENERAL PROVISIONS
Subpart B—Commercial Diving Operations
equipment
§ 197.312 Breathing supply hoses.
