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

  • Daily
  • Weekly
  • Monthly
  • Annually
    • 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

  • Daily
  • Weekly
  • Monthly
  • Every Five(5) Years
    • 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

  • ASME

    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.


Violation Examples

  • wasted hand hole

    Wasted Hand-Hole

    View Image
  • Housekeeping

    Housekeeping – Fire Hazard Around the Burner

    Flammable Plastic & Cardboard next to the burner intake. View Image
  • steam leak

    Leaking Steam From Shell

    Leaking at the Shell/Valve. View Image
  • clearance and house keeping

    Clearance & House Keeping

    View Image
  • clearance

    Clearance “middle, top”

    Less than 9” View Image
  • low water cutoff

    Low Water Cut-Off Corroded & Unsafe

    View Image
  • low water

    Low Water Cut-Off Casting Corroded

    View Image
  • leaking flow

    Burner Shroud damaged from lost refractory

    View Image
  • leaking flow

    Flow-Switch Leaking

    Note-The conduit most likely will fill with fluid, also the switch could short to “by-pass”. View Image
  • busted refactory

    Shut-off Switch(s)

    Tennessee Requires 1 shut-off for all boilers. View Image
  • busted refactory

    Busted Refractory and/or flame roll out

    This causes the wires to melt.View Image
  • broken refractory

    Busted Refractory Heat Marks

    View Image
  • pipe insulation

    Burning Pipe Insulation

    This was added to help the water pipes from freezing, and is melting from the heat. View Image
  • bir skin

    Overheated because of a Cracked Combustion Chamber

    See the next slide. View Image
  • comb breach

    Cracked Combustion Chamber

    View Image
  • busted refractory

    Busted Refractory “HotSpot”

    View Image
  • busted refractory

    Busted Refractory – “Hotspot”

    View Image
  • leaking waterbox

    Leaking Water-box

    View Image
  • leaking waterbox

    Leaking Water-box

    View Image
  • condensation

    Condensate Leaking at the Rear of Boiler

    View Image
  • junction open box

    Junction Box Open

    View Image