Chapter 3a - BOILER AND UNFIRED PRESSURE VESSEL REGULATIONS
- Subchapter A - GENERAL PROVISIONS (§§ 3a.1 — 3a.9)
- Subchapter B - REQUIREMENTS FOR BOILERS AND UNFIRED PRESSURE VESSELS (§§ 3a.21 — 3a.83)
- Subchapter C - ADMINISTRATION (§§ 3a.91 — 3a.100)
- Subchapter D - INSPECTIONS (§§ 3a.111 — 3a.117)
- Subchapter E - BOILERS INSTALLED PRIOR TO JULY 1, 1916, AND UNFIRED PRESSURE VESSELS AND POWER BOILERS INSTALLED PRIOR TO SEPTEMBER 1, 1937 (§§ 3a.131 — 3a.134)
- Subchapter F - LOW PRESSURE HEATING BOILERS INSTALLED PRIOR TO JULY 1, 1916 (§§ 3a.141 — 3a.145)
- Subchapter G - UNFIRED PRESSURE VESSELS INSTALLED PRIOR TO SEPTEMBER 1, 1937 (§§ 3a.151 — 3a.154)
- Subchapter H - SPECIAL INSTALLATIONS (§§ 3a.161 — 3a.171)