MN Boilers License Prep Test || Answered Perfectly 100%.
Special (License Grade) correct answers Work in any type of plant
Grade C (License Grade) correct answers Can operate low-pressure steam or hot water (no steam
engines/turbines)
Grade B (License Grade) correct answers Can operate high-pressure or low-pressure steam or
hot water (no steam engines/turbines)
Grade A (License Grade) correct answers Can operate any plant including plants with steam
engines/turbines
Special (License Class) correct answers Take Charge (max 50 hpr)
Shift Engineer (max 100 hpr)
2nd Class (License Class) correct answers Take Charge (max 100 hpr)
Shift Engineer (max 500 hpr)
1st Class (License Class) correct answers Take Charge (max 500 hpr)
Shift Engineer (unlimited hpr)
Chief (License Class) correct answers Take Charge (unlimited hpr)
Shift engineer (unlimited hpr)
Shift Engineer correct answers Can operate and take responsibility for the plant while on duty
,Take Charge correct answers You are the main person in charge of the plant. You supervise shift
engineers.
1 boiler horsepower = correct answers = 10 sq. Ft of heating surface
8.3 correct answers 1 gallon of water weighs _____ pounds
10 kilowatts (for licensing) correct answers _____ kilowatts = 1 horsepower
67,000 BTU/hr (for licensing) correct answers __________ BTU/hr = 1 horsepower
In the boiler room correct answers Where should a boiler license be displayed?
One BTU correct answers What will raise one pound of water by one degree F
Check water level correct answers 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 correct answers A high pressure
boiler is classified as such when what - ?
A.S.M.E. Approved correct answers What type of safety valve is required?
Efficiency correct answers When operating a boiler, what is most important?
Shuts off fuel in case of low water correct answers How does a low water fuel cut off (LWCO)
protect a boiler?
, shut off the burner when a low water condition exists. correct answers If you cannot determine
water level what do you do?
No correct answers Can you compress a liquid?
Cast Iron Sectional and Firebox correct answers What boilers are low pressure only?
Push nipples and Tie Rods correct answers What holds cast iron sections together?
At least as big as the largest incoming wire correct answers On electric boilers, how large should
the ground wire be?
Baffle correct answers Directs flow of combustion gasses, water, and/or steam
Passes correct answers Amount of times the heat moves through the tubes in a fire tube boiler
Refractory correct answers Hard surface insulation (brick, concrete,...)
Stays correct answers Helps keep shape and position of boiler
Tubing correct answers Measured by Outside Diameter (OD)
Package Boiler correct answers Comes completely assembled with its own feedwater pumps,
fuel system & draft fans
Firetube, Watertube, Cast Iron correct answers The 3 basic types of boilers (per ASME) are:
Special (License Grade) correct answers Work in any type of plant
Grade C (License Grade) correct answers Can operate low-pressure steam or hot water (no steam
engines/turbines)
Grade B (License Grade) correct answers Can operate high-pressure or low-pressure steam or
hot water (no steam engines/turbines)
Grade A (License Grade) correct answers Can operate any plant including plants with steam
engines/turbines
Special (License Class) correct answers Take Charge (max 50 hpr)
Shift Engineer (max 100 hpr)
2nd Class (License Class) correct answers Take Charge (max 100 hpr)
Shift Engineer (max 500 hpr)
1st Class (License Class) correct answers Take Charge (max 500 hpr)
Shift Engineer (unlimited hpr)
Chief (License Class) correct answers Take Charge (unlimited hpr)
Shift engineer (unlimited hpr)
Shift Engineer correct answers Can operate and take responsibility for the plant while on duty
,Take Charge correct answers You are the main person in charge of the plant. You supervise shift
engineers.
1 boiler horsepower = correct answers = 10 sq. Ft of heating surface
8.3 correct answers 1 gallon of water weighs _____ pounds
10 kilowatts (for licensing) correct answers _____ kilowatts = 1 horsepower
67,000 BTU/hr (for licensing) correct answers __________ BTU/hr = 1 horsepower
In the boiler room correct answers Where should a boiler license be displayed?
One BTU correct answers What will raise one pound of water by one degree F
Check water level correct answers 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 correct answers A high pressure
boiler is classified as such when what - ?
A.S.M.E. Approved correct answers What type of safety valve is required?
Efficiency correct answers When operating a boiler, what is most important?
Shuts off fuel in case of low water correct answers How does a low water fuel cut off (LWCO)
protect a boiler?
, shut off the burner when a low water condition exists. correct answers If you cannot determine
water level what do you do?
No correct answers Can you compress a liquid?
Cast Iron Sectional and Firebox correct answers What boilers are low pressure only?
Push nipples and Tie Rods correct answers What holds cast iron sections together?
At least as big as the largest incoming wire correct answers On electric boilers, how large should
the ground wire be?
Baffle correct answers Directs flow of combustion gasses, water, and/or steam
Passes correct answers Amount of times the heat moves through the tubes in a fire tube boiler
Refractory correct answers Hard surface insulation (brick, concrete,...)
Stays correct answers Helps keep shape and position of boiler
Tubing correct answers Measured by Outside Diameter (OD)
Package Boiler correct answers Comes completely assembled with its own feedwater pumps,
fuel system & draft fans
Firetube, Watertube, Cast Iron correct answers The 3 basic types of boilers (per ASME) are:
