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Title 46

Displaying title 46, up to date as of 7/15/2026. Title 46 was last amended 6/30/2026.
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Title 46ShippingPart / Section
Chapter ICoast Guard, Department of Homeland Security1 – 199
Subchapter FMarine Engineering50 – 64
Part 52Power Boilers52.01-1 – 52.25-20
Subpart 52.01General Requirements52.01-1 – 52.01-145
Subpart 52.05Requirements for Boilers Fabricated by Welding52.05-1 – 52.05-45
§ 52.05-1General (modifies PW-1 through PW-54).
§ 52.05-15Heat treatment (modifies PW-10).
§ 52.05-20Radiographic and ultrasonic examination (modifies PW-11 and PW-41.1).
§ 52.05-30Minimum requirements for attachment welds (modifies PW-16).
§ 52.05-45Circumferential joints in pipes, tubes, and headers (modifies PW-41).
Subpart 52.15Requirements for Watertube Boilers52.15-1 – 52.15-5
§ 52.15-1General (modifies PWT-1 through PWT-15).
§ 52.15-5Tube connections (modifies PWT-9 and PWT-11).
Subpart 52.20Requirements for Firetube Boilers52.20-1 – 52.20-25
§ 52.20-1General (modifies PFT-1 through PFT-49).
§ 52.20-17Opening between boiler and safety valve (modifies PFT-44).
§ 52.20-25Setting (modifies PFT-46).
Subpart 52.25Other Boiler Types52.25-1 – 52.25-20
§ 52.25-1General.
§ 52.25-3Feedwater heaters (modifies PFH-1).
§ 52.25-5Miniature boilers (modifies PMB-1 through PMB-21).
§ 52.25-7Electric boilers (modifies PEB-1 through PEB-19).
§ 52.25-10Organic fluid vaporizer generators (modifies PVG-1 through PVG-12).
§ 52.25-15Fired thermal fluid heaters.
§ 52.25-20Exhaust gas boilers.