Part 52 — Power Boilers
- Subpt. 52.01 General Requirements §§52.01-1 to 52.01-145
- Subpt. 52.05 Requirements for Boilers Fabricated by Welding §§52.05-1 to 52.05-45
- Subpt. 52.15 Requirements for Watertube Boilers §§52.15-1 to 52.15-5
- Subpt. 52.20 Requirements for Firetube Boilers §§52.20-1 to 52.20-25
- Subpt. 52.25 Other Boiler Types §§52.25-1 to 52.25-20