BOILER LICENSE TEST ACTUAL PAPER 2026
QUESTIONS WITH SOLUTIONS GRADED A
PLUS COMPLETE REVIEW SET 250 ITEMS
◉ Grade C (License Grade).
Answer: Can operate low-pressure steam or hot water (no steam
engines/turbines)
◉ Grade B (License Grade).
Answer: Can operate high-pressure or low-pressure steam or hot
water (no steam engines/turbines)
◉ Grade A (License Grade).
Answer: Can operate any plant including plants with steam
engines/turbines
◉ Special (License Class).
Answer: Take Charge (max 50 hpr)
Shift Engineer (max 100 hpr)
◉ 2nd Class (License Class).
Answer: Take Charge (max 100 hpr)
,Shift Engineer (max 500 hpr)
◉ 1st Class (License Class).
Answer: Take Charge (max 500 hpr)
Shift Engineer (unlimited hpr)
◉ Chief (License Class).
Answer: Take Charge (unlimited hpr)
Shift engineer (unlimited hpr)
◉ Shift Engineer.
Answer: Can operate and take responsibility for the plant while on
duty
◉ Take Charge.
Answer: You are the main person in charge of the plant. You
supervise shift engineers.
◉ 1 boiler horsepower =.
Answer: = 10 sq. Ft of heating surface
◉ 8.3.
,Answer: 1 gallon of water weighs _____ pounds
◉ 10 kilowatts (for licensing).
Answer: _____ kilowatts = 1 horsepower
◉ 67,000 BTU/hr (for licensing).
Answer: __________ BTU/hr = 1 horsepower
◉ In the boiler room.
Answer: Where should a boiler license be displayed?
◉ One BTU.
Answer: What will raise one pound of water by one degree F
◉ Check water level.
Answer: When entering a steam boiler room what is the first thing
an operator should do?
◉ Above 15 psi, above 160 psi water, and temps above 250°F.
Answer: A high pressure boiler is classified as such when what - ?
◉ A.S.M.E. Approved.
, Answer: What type of safety valve is required?
◉ Efficiency.
Answer: When operating a boiler, what is most important?
◉ Shuts off fuel in case of low water.
Answer: How does a low water fuel cut off (LWCO) protect a boiler?
◉ shut off the burner when a low water condition exists..
Answer: If you cannot determine water level what do you do?
◉ No.
Answer: Can you compress a liquid?
◉ Cast Iron Sectional and Firebox.
Answer: What boilers are low pressure only?
◉ Push nipples and Tie Rods.
Answer: What holds cast iron sections together?
◉ At least as big as the largest incoming wire.
Answer: On electric boilers, how large should the ground wire be?
QUESTIONS WITH SOLUTIONS GRADED A
PLUS COMPLETE REVIEW SET 250 ITEMS
◉ Grade C (License Grade).
Answer: Can operate low-pressure steam or hot water (no steam
engines/turbines)
◉ Grade B (License Grade).
Answer: Can operate high-pressure or low-pressure steam or hot
water (no steam engines/turbines)
◉ Grade A (License Grade).
Answer: Can operate any plant including plants with steam
engines/turbines
◉ Special (License Class).
Answer: Take Charge (max 50 hpr)
Shift Engineer (max 100 hpr)
◉ 2nd Class (License Class).
Answer: Take Charge (max 100 hpr)
,Shift Engineer (max 500 hpr)
◉ 1st Class (License Class).
Answer: Take Charge (max 500 hpr)
Shift Engineer (unlimited hpr)
◉ Chief (License Class).
Answer: Take Charge (unlimited hpr)
Shift engineer (unlimited hpr)
◉ Shift Engineer.
Answer: Can operate and take responsibility for the plant while on
duty
◉ Take Charge.
Answer: You are the main person in charge of the plant. You
supervise shift engineers.
◉ 1 boiler horsepower =.
Answer: = 10 sq. Ft of heating surface
◉ 8.3.
,Answer: 1 gallon of water weighs _____ pounds
◉ 10 kilowatts (for licensing).
Answer: _____ kilowatts = 1 horsepower
◉ 67,000 BTU/hr (for licensing).
Answer: __________ BTU/hr = 1 horsepower
◉ In the boiler room.
Answer: Where should a boiler license be displayed?
◉ One BTU.
Answer: What will raise one pound of water by one degree F
◉ Check water level.
Answer: When entering a steam boiler room what is the first thing
an operator should do?
◉ Above 15 psi, above 160 psi water, and temps above 250°F.
Answer: A high pressure boiler is classified as such when what - ?
◉ A.S.M.E. Approved.
, Answer: What type of safety valve is required?
◉ Efficiency.
Answer: When operating a boiler, what is most important?
◉ Shuts off fuel in case of low water.
Answer: How does a low water fuel cut off (LWCO) protect a boiler?
◉ shut off the burner when a low water condition exists..
Answer: If you cannot determine water level what do you do?
◉ No.
Answer: Can you compress a liquid?
◉ Cast Iron Sectional and Firebox.
Answer: What boilers are low pressure only?
◉ Push nipples and Tie Rods.
Answer: What holds cast iron sections together?
◉ At least as big as the largest incoming wire.
Answer: On electric boilers, how large should the ground wire be?
