Washington, D.C.
For Washington, D.C., state is Washington, D.C; governing body is Department of Buildings; statute citation is District of Columbia Code, Division 1. Government of District, Title 2. Government Administration, Chapter 1. Inspections – Boilers . DCMR Title 17 Chapter 4 (Steam Engineers). DCMR Title 12 Chapter 10E (Boilers, Water Heaters and Pressure Vessels); power boiler inspection interval is annual internal inspection; low-pressure boiler inspection interval is annual external inspection, recorded from its source on 2026-08-05.
- State
- Washington, D.C.
- Governing body
- Department of Buildings
- Statute citation
- District of Columbia Code, Division 1. Government of District, Title 2. Government Administration, Chapter 1. Inspections – Boilers . DCMR Title 17 Chapter 4 (Steam Engineers). DCMR Title 12 Chapter 10E (Boilers, Water Heaters and Pressure Vessels).
- Power boiler inspection interval
- annual internal inspection verified
- Low-pressure boiler inspection interval
- annual external inspection verified
- Pressure vessel inspection interval
- annual external inspection verified
- Accepted inspector types
- Inspections made by inspectors employed by insurance companies and commissioned by the department are accepted in lieu of inspections made by a department inspector.
- Exemptions
- Those under federal government jurisdiction; Those on boats or floating equipment; Those on railway locomotives; Those under the Public Utilities Commission jurisdiction; Unfired pressure vessels with a capacity of 15 gallons or less, and those constructed for a pressure of 60 psi or less
What the source says
Steam boilers: an annual internal inspection. Cast-iron boilers and unfired pressure vessels: an annual external inspection. Portable and other unfired pressure vessels: an annual external inspection.
— nationalboard.org, retrieved 2026-08-05
Source
- nationalboard.orghttps://www.nationalboard.org/PrintAllSynopsis.aspx?Jurisdiction=Select