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

For Hawaii, governing body is Hawaii Department of Labor and Industrial Relations, Division of Occupational Safety and Health, Boiler and Elevator Inspection Branch; statute citation is Hawaii Revised Statutes, Chapter 397 Boiler and Elevator Safety Law . Hawaii Administrative Rules: Part 10, Boilers and Pressure Vessels; power boiler inspection interval is annual internal or permit inspection; external inspection at approximately six-months after each internal (biennial internal inspections permitted for power boilers with continuous internal water treatment under qualified supervision upon approval of the director); low-pressure boiler inspection interval is biennial external inspection and/or an internal inspection where construction permits (large steam heating boilers require annual internal inspection, and external inspection at approximately six-months after each internal); pressure vessel inspection interval is biennial external inspection and/or internal inspection where construction permits, recorded from its source on 2026-08-05.

- **State:** Hawaii _(verified: appears in the quote below)_
- **Governing body:** Hawaii Department of Labor and Industrial Relations, Division of Occupational Safety and Health, Boiler and Elevator Inspection Branch
- **Statute citation:** Hawaii Revised Statutes, Chapter 397 Boiler and Elevator Safety Law . Hawaii Administrative Rules: Part 10, Boilers and Pressure Vessels. _(verified: appears in the quote below)_
- **Power boiler inspection interval:** annual internal or permit inspection; external inspection at approximately six-months after each internal (biennial internal inspections permitted for power boilers with continuous internal water treatment under qualified supervision upon approval of the director)
- **Low-pressure boiler inspection interval:** biennial external inspection and/or an internal inspection where construction permits (large steam heating boilers require annual internal inspection, and external inspection at approximately six-months after each internal)
- **Pressure vessel inspection interval:** biennial external inspection and/or internal inspection where construction permits
- **Accepted inspector types:** Insurance companies required to inspect all insured objects; inspection reports submitted within thirty days
- **Exemptions:** Boilers and pressure vessels under federal inspection and control; unfired pressure vessels meeting US DOT requirements for transporting liquids or gases under pressure; containers for storage of liquefied compressed flammable gases under other agencies; unfired pressure vessels with nominal water-containing capacity of 120 gallons or less; hot-water supply boilers, hot-water heating boilers, and potable water heaters directly fired not exceeding 200,000 BTU/hr, 210°F, 120 gallons, 160 psi; unfired pressure vessels designed for pressure not exceeding 15 psig and 5 cubic feet in volume; pressure vessels not exceeding 5 cu ft/250 psi or 3 cu ft/350 psi or 1-1/2 cu ft/600 psig; unfired pressure vessels containing water and filtering material for irrigation; unfired pressure vessels for cold water storage; fired or self-contained sterilizers/steam generators/jacketed kettles/steam cookers not exceeding 3 kilowatts and 1-1/2 cubic feet; boilers in single family dwellings or fewer than six living units; unfired pressure vessels and piping containing LPG, LNG, refrigeration vessels, and liquid CO2 pressure vessels

## What the source says

> Hawaii Revised Statutes, Chapter 397 Boiler and Elevator Safety Law . Hawaii Administrative Rules: Part 10, Boilers and Pressure Vessels. 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/).