Connecticut
For Connecticut, governing body is Department of Administrative Services, Bureau of Boilers, Office of the State Building Inspector, Division of Construction Services; statute citation is Connecticut General Statutes, Chapter 540, Sections 29-231 through 29-244 ; power boiler inspection interval is one annual internal and external inspection; one annual external inspection under operating conditions not more than six months after the internal and external inspection (power boilers with internal water treatment under qualified engineer: internal and external inspection every eighteen months, plus external inspection under operating conditions not more than nine months after); low-pressure boiler inspection interval is external biennially, with an internal at the discretion of the inspector; accepted inspector types is Insurance company inspectors commissioned by the department (accepted in lieu of department inspector), recorded from its source on 2026-08-05.
- State
- Connecticut verified
- Governing body
- Department of Administrative Services, Bureau of Boilers, Office of the State Building Inspector, Division of Construction Services
- Statute citation
- Connecticut General Statutes, Chapter 540, Sections 29-231 through 29-244 .
- Power boiler inspection interval
- one annual internal and external inspection; one annual external inspection under operating conditions not more than six months after the internal and external inspection (power boilers with internal water treatment under qualified engineer: internal and external inspection every eighteen months, plus external inspection under operating conditions not more than nine months after) verified
- Low-pressure boiler inspection interval
- external biennially, with an internal at the discretion of the inspector verified
- Accepted inspector types
- Insurance company inspectors commissioned by the department (accepted in lieu of department inspector)
- Exemptions
- Boilers under federal control; portable boilers used in pumping, heating, steaming, and drilling in the open field; portable boilers for agricultural purposes; steam-heating boilers, hot-water heaters, and hot-water heating boilers in private homes or apartment houses of not more than five families; hot-water heaters approved by a nationally recognized testing agency not exceeding 120 gallons/200,000 BTU per hour/160 psi/210°F (except in schools, day-care centers, hospitals, nursing or boarding homes, churches, or public buildings); antique or model boilers in nonprofit museums; public service companies as defined in Connecticut General Statutes Section 16-1
What the source says
Public service companies as defined in Connecticut General Statutes (Section 16-1). OBJECTS SUBJECT TO RULES FOR FIELD INSPECTION Same as OBJECTS SUBJECT TO RULES FOR CONSTRUCTION AND STAMPING, plus water heaters in public buildings, regardless of size or BTU rating. INSPECTIONS REQUIRED Power boilers: One annual internal and external inspection. One annual external inspection under operating conditions not more than six months after the internal and external inspection. Power boilers that operate with internal water treatment under the direct supervision of a qualified engineer: One internal and external inspection every eighteen months while not under pressure. One external inspection under operating conditions not more than nine months after the external and internal inspection. Low-Pressure Boilers Low-pressure steam boilers, hot-water heating boilers, hot-water supply boilers, and hot water heaters; an external biennially, with an internal at the discretion of the inspector.
— nationalboard.org, retrieved 2026-08-05
Source
- nationalboard.orghttps://www.nationalboard.org/PrintAllSynopsis.aspx?Jurisdiction=Select