# Arizona — US boiler and pressure vessel inspection requirements by state

For Arizona, governing body is Industrial Commission of Arizona, Department of Safety and Health, Boiler & Elevator Safety Sections; statute citation is Arizona Revised Statutes, Title 23. Labor, Article 11. Arizona Boiler Act , Sections 471 through 488; power boiler inspection interval is annual internal certificate inspection and an external inspection while under operating conditions; triennial (36-month) internal inspection and annual external inspection when fully attended by qualified attendants per Arizona Boiler Rule, R20-5-408(C); low-pressure boiler inspection interval is certificate inspection every two years; internal inspection where construction permits; accepted inspector types is Third party inspectors employed by National Board or ASME accredited companies and issued a special inspection certificate by the chief boiler inspector, accepted per A.R.S. 23-485, recorded from its source on 2026-08-05.

- **State:** Arizona _(verified: appears in the quote below)_
- **Governing body:** Industrial Commission of Arizona, Department of Safety and Health, Boiler & Elevator Safety Sections
- **Statute citation:** Arizona Revised Statutes, Title 23. Labor, Article 11. Arizona Boiler Act , Sections 471 through 488. _(verified: appears in the quote below)_
- **Power boiler inspection interval:** annual internal certificate inspection and an external inspection while under operating conditions; triennial (36-month) internal inspection and annual external inspection when fully attended by qualified attendants per Arizona Boiler Rule, R20-5-408(C)
- **Low-pressure boiler inspection interval:** certificate inspection every two years; internal inspection where construction permits
- **Accepted inspector types:** Third party inspectors employed by National Board or ASME accredited companies and issued a special inspection certificate by the chief boiler inspector, accepted per A.R.S. 23-485
- **Exemptions:** Boilers, lined hot water heaters and pressure vessels regulated by the US government; boilers, lined hot water heaters and pressure vessels located in private residences, or apartment complexes less than six units; boilers, lined hot water heaters and pressure vessels operated on Indian reservations; lined (potable) hot-water heaters not exceeding 200,000 BTU/hr, 210°F, 120 gallons

## What the source says

> Arizona Revised Statutes, Title 23. Labor, Article 11. Arizona Boiler Act , Sections 471 through 488. RULES FOR CONSTRUCTION AND STAMPING Construction:

## Source

- https://www.nationalboard.org/PrintAllSynopsis.aspx?Jurisdiction=Select

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [US boiler and pressure vessel inspection requirements by state](https://referencesource.org/boiler-inspection-requirements-by-state/).