Tennessee
What is the governing body for Tennessee?
For Tennessee, governing body is disputed: Department of Labor and Workforce Development's Boiler Inspection Unit per chardonlabs.com, Department of Labor and Workforce Development, Boiler Inspection Unit per nationalboard.org; statute citation is Tennessee Code Annotated, Title 68, Chapter 122; power boiler inspection interval is disputed: annual internal and external inspections, with external inspections conducted while under pressure per chardonlabs.com, 1 Year internal; 1 Year external per nationalboard.org; low-pressure boiler inspection interval is disputed: biennial internal and external inspections per chardonlabs.com, 2 Years internal; 2 Years external per nationalboard.org, recorded from its source on 2026-08-05.
The Department of Labor and Workforce Development’s Boiler Inspection Unit oversees inspections under Tennessee Code Annotated, Title 68, Chapter 122. Authorized inspector types: Department deputy inspectors conduct all initial inspections of new, reinstalled, and secondhand high-pressure and low-pressure boilers. For ongoing inspections, Tennessee accepts commissioned insurance and owner company inspectors. Inspection frequency: High-pressure boilers require annual internal and external inspections, with external inspections conducted while under pressure. Low-pressure boilers require biennial internal and external inspections.
— chardonlabs.com, retrieved 2026-08-05
- State
- Tennessee verified
- Governing body
- Department of Labor and Workforce Development's Boiler Inspection Unit sources disagree
- Statute citation
- Tennessee Code Annotated, Title 68, Chapter 122 verified
- Tennessee Code Annotated, Title 68. Health, Safety and Environmental Protection, Chapter 122. Boiler Inspection, Erection and Repair. per nationalboard.org
- Power boiler inspection interval
- annual internal and external inspections, with external inspections conducted while under pressure sources disagree
- Low-pressure boiler inspection interval
- biennial internal and external inspections sources disagree
- Accepted inspector types
- Department deputy inspectors conduct all initial inspections of new, reinstalled, and secondhand high-pressure and low-pressure boilers. For ongoing inspections, commissioned insurance and owner company inspectors sources disagree
- Pressure vessel inspection interval
- 2 Years internal; 2 Years external (subject to corrosion); certificate inspection every two years for others per nationalboard.org
- Exemptions
- Boilers located on farms used solely for agricultural purposes; Boilers and pressure vessels located in municipalities where boiler inspection ordinances are in force; Steam boilers used for heating purposes carrying a pressure of not more than 15 psi, located in private residences or in apartment houses of fewer than six families; Hot-water heating boilers carrying a pressure of not more than 30 psi, located in private residences or in apartment houses of fewer than six families per nationalboard.org
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 Department of Labor and Workforce Development's Boiler Inspection Unit, as of 2026-08-05.
The Department of Labor and Workforce Development’s Boiler Inspection Unit oversees inspections under Tennessee Code Annotated, Title 68, Chapter 122. Authorized inspector types: Department deputy inspectors conduct all initial inspections of new, reinstalled, and secondhand high-pressure and low-pressure boilers. For ongoing inspections, Tennessee accepts commissioned insurance and owner company inspectors. Inspection frequency: High-pressure boilers require annual internal and external inspections, with external inspections conducted while under pressure. Low-pressure boilers require biennial internal and external inspections.
https://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/
nationalboard.org says governing body is Department of Labor and Workforce Development, Boiler Inspection Unit, as of 2026-08-05.
Tennessee Code Annotated, Title 68. Health, Safety and Environmental Protection, Chapter 122. Boiler Inspection, Erection and Repair. 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, with external inspections conducted while under pressure, as of 2026-08-05.
The Department of Labor and Workforce Development’s Boiler Inspection Unit oversees inspections under Tennessee Code Annotated, Title 68, Chapter 122. Authorized inspector types: Department deputy inspectors conduct all initial inspections of new, reinstalled, and secondhand high-pressure and low-pressure boilers. For ongoing inspections, Tennessee accepts commissioned insurance and owner company inspectors. Inspection frequency: High-pressure boilers require annual internal and external inspections, with external inspections conducted while under pressure. Low-pressure boilers require biennial internal and external inspections.
https://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/
nationalboard.org says power boiler inspection interval is 1 Year internal; 1 Year external, as of 2026-08-05.
Tennessee Code Annotated, Title 68. Health, Safety and Environmental Protection, Chapter 122. Boiler Inspection, Erection and Repair. 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 biennial internal and external inspections, as of 2026-08-05.
The Department of Labor and Workforce Development’s Boiler Inspection Unit oversees inspections under Tennessee Code Annotated, Title 68, Chapter 122. Authorized inspector types: Department deputy inspectors conduct all initial inspections of new, reinstalled, and secondhand high-pressure and low-pressure boilers. For ongoing inspections, Tennessee accepts commissioned insurance and owner company inspectors. Inspection frequency: High-pressure boilers require annual internal and external inspections, with external inspections conducted while under pressure. Low-pressure boilers require biennial internal and external inspections.
https://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/
nationalboard.org says low-pressure boiler inspection interval is 2 Years internal; 2 Years external, as of 2026-08-05.
Tennessee Code Annotated, Title 68. Health, Safety and Environmental Protection, Chapter 122. Boiler Inspection, Erection and Repair. RULES FOR CONSTRUCTION AND STAMPING Construction:
https://www.nationalboard.org/PrintAllSynopsis.aspx?Jurisdiction=Select
Accepted inspector types
chardonlabs.com says accepted inspector types is Department deputy inspectors conduct all initial inspections of new, reinstalled, and secondhand high-pressure and low-pressure boilers. For ongoing inspections, commissioned insurance and owner company inspectors, as of 2026-08-05.
The Department of Labor and Workforce Development’s Boiler Inspection Unit oversees inspections under Tennessee Code Annotated, Title 68, Chapter 122. Authorized inspector types: Department deputy inspectors conduct all initial inspections of new, reinstalled, and secondhand high-pressure and low-pressure boilers. For ongoing inspections, Tennessee accepts commissioned insurance and owner company inspectors. Inspection frequency: High-pressure boilers require annual internal and external inspections, with external inspections conducted while under pressure. Low-pressure boilers require biennial internal and external inspections.
https://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/
nationalboard.org says accepted inspector types is Inspections made by inspectors employed by insurance and owner/user companies and commissioned by the department are accepted in lieu of inspections made by department inspector., as of 2026-08-05.
Tennessee Code Annotated, Title 68. Health, Safety and Environmental Protection, Chapter 122. Boiler Inspection, Erection and Repair. 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