Ohio
For Ohio, governing body is Ohio Department of Commerce's Division of Industrial Compliance; statute citation is Ohio Revised Code, Title 41, Chapter 4104; power boiler inspection interval is annual internal and external inspections while operating; low-pressure boiler inspection interval is triennial internal inspections and annual external inspections under operating conditions; accepted inspector types is commissioned inspectors from authorized insurance companies, recorded from its source on 2026-08-05.
- State
- Ohio
- Governing body
- Ohio Department of Commerce's Division of Industrial Compliance unconfirmed
- Statute citation
- Ohio Revised Code, Title 41, Chapter 4104
- Power boiler inspection interval
- annual internal and external inspections while operating
- Low-pressure boiler inspection interval
- triennial internal inspections and annual external inspections under operating conditions
- Accepted inspector types
- commissioned inspectors from authorized insurance companies
- Pressure vessel inspection interval
- Unfired pressure vessels are exempt from field inspection. per nationalboard.org
- Exemptions
- Portable boilers or unfired pressure vessels located on farms and used solely for agricultural purposes. Steam or vapor boilers carrying a pressure of not more than 15 psig, located in private residences or in apartment houses of fewer than six family units. Hot-water boilers operated at temperatures not exceeding 250°F, located in private residences or in apartment houses of fewer than six family units. Unfired pressure vessels. per nationalboard.org
Values marked unconfirmed are shown, but we could not tie them to the quote below: Governing body. Read the quote and judge them yourself.
What the source says
Ohio Ohio’s inspection framework: Governing body: The Ohio Department of Commerce’s Division of Industrial Compliance oversees boiler inspections under Ohio Revised Code, Title 41, Chapter 4104. Authorized inspector types: Ohio accepts commissioned inspectors from authorized insurance companies. Inspection frequency: High-pressure boilers require annual internal and external inspections while operating. Low-pressure boilers require triennial internal inspections and annual external inspections under operating conditions.
— chardonlabs.com, retrieved 2026-08-05
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
Governing body
chardonlabs.com says governing body is Ohio Department of Commerce's Division of Industrial Compliance, as of 2026-08-05.
Ohio Ohio’s inspection framework: Governing body: The Ohio Department of Commerce’s Division of Industrial Compliance oversees boiler inspections under Ohio Revised Code, Title 41, Chapter 4104. Authorized inspector types: Ohio accepts commissioned inspectors from authorized insurance companies. Inspection frequency: High-pressure boilers require annual internal and external inspections while operating. Low-pressure boilers require triennial internal inspections and annual external inspections under operating conditions.
https://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/
nationalboard.org says governing body is Ohio Department of Commerce, Division of Industrial Compliance – Boilers, as of 2026-08-05.
Ohio Revised Code, Title 41. Labor and Industry, Chapter 4104. Division of Boiler Inspection, Chapter 4104. Boilers. RULES FOR CONSTRUCTION AND STAMPING Construction:
https://www.nationalboard.org/PrintAllSynopsis.aspx?Jurisdiction=Select
Statute citation
chardonlabs.com says statute citation is Ohio Revised Code, Title 41, Chapter 4104, as of 2026-08-05.
Ohio Ohio’s inspection framework: Governing body: The Ohio Department of Commerce’s Division of Industrial Compliance oversees boiler inspections under Ohio Revised Code, Title 41, Chapter 4104. Authorized inspector types: Ohio accepts commissioned inspectors from authorized insurance companies. Inspection frequency: High-pressure boilers require annual internal and external inspections while operating. Low-pressure boilers require triennial internal inspections and annual external inspections under operating conditions.
https://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/
nationalboard.org says statute citation is Ohio Revised Code, Title 41. Labor and Industry, Chapter 4104. Division of Boiler Inspection, Chapter 4104. Boilers., as of 2026-08-05.
Ohio Revised Code, Title 41. Labor and Industry, Chapter 4104. Division of Boiler Inspection, Chapter 4104. Boilers. RULES FOR CONSTRUCTION AND STAMPING Construction:
https://www.nationalboard.org/PrintAllSynopsis.aspx?Jurisdiction=Select
Power boiler inspection interval
chardonlabs.com says power boiler inspection interval is annual internal and external inspections while operating, as of 2026-08-05.
Ohio Ohio’s inspection framework: Governing body: The Ohio Department of Commerce’s Division of Industrial Compliance oversees boiler inspections under Ohio Revised Code, Title 41, Chapter 4104. Authorized inspector types: Ohio accepts commissioned inspectors from authorized insurance companies. Inspection frequency: High-pressure boilers require annual internal and external inspections while operating. Low-pressure boilers require triennial internal inspections and annual external inspections under operating conditions.
https://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/
nationalboard.org says power boiler inspection interval is Power boilers and high-pressure, high-temperature water boilers: Internal 1 Year, External 1 Year (under operating conditions)., as of 2026-08-05.
Ohio Revised Code, Title 41. Labor and Industry, Chapter 4104. Division of Boiler Inspection, Chapter 4104. Boilers. RULES FOR CONSTRUCTION AND STAMPING Construction:
https://www.nationalboard.org/PrintAllSynopsis.aspx?Jurisdiction=Select
Low-pressure boiler inspection interval
chardonlabs.com says low-pressure boiler inspection interval is triennial internal inspections and annual external inspections under operating conditions, as of 2026-08-05.
Ohio Ohio’s inspection framework: Governing body: The Ohio Department of Commerce’s Division of Industrial Compliance oversees boiler inspections under Ohio Revised Code, Title 41, Chapter 4104. Authorized inspector types: Ohio accepts commissioned inspectors from authorized insurance companies. Inspection frequency: High-pressure boilers require annual internal and external inspections while operating. Low-pressure boilers require triennial internal inspections and annual external inspections under operating conditions.
https://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/
nationalboard.org says low-pressure boiler inspection interval is Low-pressure boilers: Internal 3 Years, External 1 Year (under operating conditions)., as of 2026-08-05.
Ohio Revised Code, Title 41. Labor and Industry, Chapter 4104. Division of Boiler Inspection, Chapter 4104. Boilers. RULES FOR CONSTRUCTION AND STAMPING Construction:
https://www.nationalboard.org/PrintAllSynopsis.aspx?Jurisdiction=Select
Accepted inspector types
chardonlabs.com says accepted inspector types is commissioned inspectors from authorized insurance companies, as of 2026-08-05.
Ohio Ohio’s inspection framework: Governing body: The Ohio Department of Commerce’s Division of Industrial Compliance oversees boiler inspections under Ohio Revised Code, Title 41, Chapter 4104. Authorized inspector types: Ohio accepts commissioned inspectors from authorized insurance companies. Inspection frequency: High-pressure boilers require annual internal and external inspections while operating. Low-pressure boilers require triennial internal inspections and annual external inspections under operating conditions.
https://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/
nationalboard.org says accepted inspector types is Inspections made by inspectors of authorized insurance companies and commissioned by the department are accepted in lieu of inspections made by a department inspector., as of 2026-08-05.
Ohio Revised Code, Title 41. Labor and Industry, Chapter 4104. Division of Boiler Inspection, Chapter 4104. Boilers. RULES FOR CONSTRUCTION AND STAMPING Construction:
https://www.nationalboard.org/PrintAllSynopsis.aspx?Jurisdiction=Select
Sources
- chardonlabs.comhttps://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/
- nationalboard.orghttps://www.nationalboard.org/PrintAllSynopsis.aspx?Jurisdiction=Select