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

For Vermont, governing body is Department of Public Safety, Division of Fire Safety; statute citation is Vermont Statutes Annotated, Title 20 VSA, Chapter 173, Subchapter 5, Vermont Fire & Building Safety Code - 2015; power boiler inspection interval is Annual internal and external inspection while not under pressure; External inspection, while in operation and under pressure, approximately six months from the internal inspection; low-pressure boiler inspection interval is 2 year external inspection; 2 year internal inspection, where construction permits; pressure vessel inspection interval is 3 year external inspection; 3 year internal inspection, where construction permits, recorded from its source on 2026-08-05.

- **State:** Vermont
- **Governing body:** Department of Public Safety, Division of Fire Safety
- **Statute citation:** Vermont Statutes Annotated, Title 20 VSA, Chapter 173, Subchapter 5, Vermont Fire & Building Safety Code - 2015.
- **Power boiler inspection interval:** Annual internal and external inspection while not under pressure; External inspection, while in operation and under pressure, approximately six months from the internal inspection _(verified: appears in the quote below)_
- **Low-pressure boiler inspection interval:** 2 year external inspection; 2 year internal inspection, where construction permits _(verified: appears in the quote below)_
- **Pressure vessel inspection interval:** 3 year external inspection; 3 year internal inspection, where construction permits
- **Accepted inspector types:** Inspections made by inspectors with a National Board commission and commissioned by the department are required.
- **Exemptions:** Boilers or pressure vessels located on common carriers subject to Surface Transportation Board, US Department of Transportation, Federal Railroad Administration, or Nuclear Regulatory Commission; Hot-water heaters and potable water storage tanks with heat input of less than 200,000 BTU per hour, water temperature less than 210°F, water-containing capacity less than 120 gallons

## What the source says

> High pressure power boilers (more than 15 psi) and high temperature water boilers: Annual internal and external inspection while not under pressure; External inspection, while in operation and under pressure, approximately six months from the internal inspection. Low-pressure hot water heating boilers (not exceeding 160 psi and/or temperatures not exceeding 250 degrees) and low-pressure steam boilers (not exceeding 15 psi): 2 year external inspection; 2 year internal inspection, where construction permits, for steam heating boiler (not exceeding 15 psi).

## 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/).