Miniature boilers must meet the applicable provisions in this part for the boiler type involved and the mandatory requirements in PMB-1 through PMB-21 of section I of the ASME Boiler and Pressure Vessel Code (incorporated by reference; see 46 CFR 52.01-1) [CGFR 68-82, 33 FR 18815, Dec. 18, 1968, as amended by USCG-2003-16630, 73 FR 65161, Oct. 31, 2008; USCG-2014-0688, 79 FR 58280, Sept. 29, 2014]