Additional Boiler Information

Boiler checks are recommended by ASME Code Section IV and adopted by the state of Tennessee. These boiler checks are recommended as a minimum and are not all inclusive. Additional checks may need to be made depending on the type, size, previous maintenance history, age and condition of the plant. All plants should be operated in a safe, prudent and attentive manner.

Inspection procedure checklists are provided below:

Low-Pressure Steam Boiler

  • Observe operating pressure
  • Observe water level
  • Observe general conditions
  • Determine cause of unusual noises or conditions and correct
  • Test water column or gage glass
  • Test water condition and perform corrections as necessary
    (add chemicals, blow down, etc.)
  • Record in log
  • Test low-water fuel cutoff
  • Blow down boiler
  • Observe condition of flame
  • Check oil supply
  • Observe operation of condensate or vacuum pump
  • Safety valve -- lift lever
  • Test flame-detection devices
  • Test limit controls
  • Test operating controls
  • Sludge blow down (if required)
  • Check condition of heating surfaces for oil pre-heaters
  • Check combustion air supply to boiler room
  • Inspect internally and externally after cleaning
  • Open and inspect low-water fuel cutoff
  • Routine burner maintenance
  • Routine maintenance of condensate or vacuum return equipment
  • Routine maintenance of all combustion control equipment
  • Combustion and draft tests
  • Safety valve pop test
  • Evaporation test of low-water fuel cutoff
  • Inspect gas/oil piping for proper support and tightness
  • Inspect boiler room ventilation louvers and intake

Water Heater Boiler

  • Observe operating pressures and temperatures
  • Observe general conditions
  • Determine cause of unusual noise or conditions
  • Record in log
  • Observe condition of flame
  • Check fuel-oil supply
  • Observe operation of circulating pumps
  • Safety relief valve lift lever test
  • Test flame detection devices
  • Test limit controls
  • Test operating controls
  • Inspect fuel supply systems
  • Test low-water cutoff
  • Internal inspection after cleaning
  • Boiler Unit Application/Forms/Permits/License


Founded in 1880 by a small group of leading industrialists, the American Society of Mechanical Engineers (ASME) is a not-for-profit membership organization that enables collaboration, knowledge sharing, career enrichment, and skill development across all engineering disciplines. This assists global engineering communities develop solutions to benefit lives and livelihoods.

ASME is the approved standard for boilers and pressure vessels in Tennessee.

National Board

The National Board of Boiler and Pressure Vessel Inspectors was created in 1919 to promote a greater safety of life and property through uniformity in the construction, installation, repair, maintenance and inspection of pressure equipment. The National Board membership oversees adherence to laws, rules, and regulations relating to boilers and pressure vessels.

The National Board members are the chief boiler inspectors representing most states and provinces in North America, as well as many major cities in the U.S.



Boiler Unit

(615) 741-1900