MN Special Boilers License Prep Test questions
with solved solutions
Work in any type of plant - ANSWER>>Special (License Grade)
Can operate low-pressure steam or hot water (no steam engines/turbines) - ANSWER>>Grade C
(License Grade)
Can operate high-pressure or low-pressure steam or hot water (no steam engines/turbines) -
ANSWER>>Grade B (License Grade)
Can operate any plant including plants with steam engines/turbines - ANSWER>>Grade A
(License Grade)
Take Charge (max 50 hpr)
Shift Engineer (max 100 hpr) - ANSWER>>Special (License Class)
Take Charge (max 100 hpr)
Shift Engineer (max 500 hpr) - ANSWER>>2nd Class (License Class)
Take Charge (max 500 hpr)
Shift Engineer (unlimited hpr) - ANSWER>>1st Class (License Class)
Take Charge (unlimited hpr)
Shift engineer (unlimited hpr) - ANSWER>>Chief (License Class)
Can operate and take responsibility for the plant while on duty - ANSWER>>Shift Engineer
,You are the main person in charge of the plant. You supervise shift engineers. - ANSWER>>Take
Charge
= 10 sq. Ft of heating surface - ANSWER>>1 boiler horsepower =
1 gallon of water weighs _____ pounds - ANSWER>>8.3
_____ kilowatts = 1 horsepower - ANSWER>>10 kilowatts (for licensing)
__________ BTU/hr = 1 horsepower - ANSWER>>67,000 BTU/hr (for licensing)
Where should a boiler license be displayed? - ANSWER>>In the boiler room
What will raise one pound of water by one degree F - ANSWER>>One BTU
When entering a steam boiler room what is the first thing an operator should do? -
ANSWER>>Check water level
A high pressure boiler is classified as such when what - ? - ANSWER>>Above 15 psi, above 160
psi water, and temps above 250°F
What type of safety valve is required? - ANSWER>>A.S.M.E. Approved
When operating a boiler, what is most important? - ANSWER>>Efficiency
How does a low water fuel cut off (LWCO) protect a boiler? - ANSWER>>Shuts off fuel in case of
low water
, If you cannot determine water level what do you do? - ANSWER>>shut off the burner when a
low water condition exists.
Can you compress a liquid? - ANSWER>>No
What boilers are low pressure only? - ANSWER>>Cast Iron Sectional and Firebox
What holds cast iron sections together? - ANSWER>>Push nipples and Tie Rods
On electric boilers, how large should the ground wire be? - ANSWER>>At least as big as the
largest incoming wire
Directs flow of combustion gasses, water, and/or steam - ANSWER>>Baffle
Amount of times the heat moves through the tubes in a fire tube boiler - ANSWER>>Passes
Hard surface insulation (brick, concrete,...) - ANSWER>>Refractory
Helps keep shape and position of boiler - ANSWER>>Stays
Measured by Outside Diameter (OD) - ANSWER>>Tubing
Comes completely assembled with its own feedwater pumps, fuel system & draft fans -
ANSWER>>Package Boiler
The 3 basic types of boilers (per ASME) are: - ANSWER>>Firetube, Watertube, Cast Iron
Steam boilers have __________ ___________ to control burner (turn burner on and off) -
ANSWER>>Pressure Controls
with solved solutions
Work in any type of plant - ANSWER>>Special (License Grade)
Can operate low-pressure steam or hot water (no steam engines/turbines) - ANSWER>>Grade C
(License Grade)
Can operate high-pressure or low-pressure steam or hot water (no steam engines/turbines) -
ANSWER>>Grade B (License Grade)
Can operate any plant including plants with steam engines/turbines - ANSWER>>Grade A
(License Grade)
Take Charge (max 50 hpr)
Shift Engineer (max 100 hpr) - ANSWER>>Special (License Class)
Take Charge (max 100 hpr)
Shift Engineer (max 500 hpr) - ANSWER>>2nd Class (License Class)
Take Charge (max 500 hpr)
Shift Engineer (unlimited hpr) - ANSWER>>1st Class (License Class)
Take Charge (unlimited hpr)
Shift engineer (unlimited hpr) - ANSWER>>Chief (License Class)
Can operate and take responsibility for the plant while on duty - ANSWER>>Shift Engineer
,You are the main person in charge of the plant. You supervise shift engineers. - ANSWER>>Take
Charge
= 10 sq. Ft of heating surface - ANSWER>>1 boiler horsepower =
1 gallon of water weighs _____ pounds - ANSWER>>8.3
_____ kilowatts = 1 horsepower - ANSWER>>10 kilowatts (for licensing)
__________ BTU/hr = 1 horsepower - ANSWER>>67,000 BTU/hr (for licensing)
Where should a boiler license be displayed? - ANSWER>>In the boiler room
What will raise one pound of water by one degree F - ANSWER>>One BTU
When entering a steam boiler room what is the first thing an operator should do? -
ANSWER>>Check water level
A high pressure boiler is classified as such when what - ? - ANSWER>>Above 15 psi, above 160
psi water, and temps above 250°F
What type of safety valve is required? - ANSWER>>A.S.M.E. Approved
When operating a boiler, what is most important? - ANSWER>>Efficiency
How does a low water fuel cut off (LWCO) protect a boiler? - ANSWER>>Shuts off fuel in case of
low water
, If you cannot determine water level what do you do? - ANSWER>>shut off the burner when a
low water condition exists.
Can you compress a liquid? - ANSWER>>No
What boilers are low pressure only? - ANSWER>>Cast Iron Sectional and Firebox
What holds cast iron sections together? - ANSWER>>Push nipples and Tie Rods
On electric boilers, how large should the ground wire be? - ANSWER>>At least as big as the
largest incoming wire
Directs flow of combustion gasses, water, and/or steam - ANSWER>>Baffle
Amount of times the heat moves through the tubes in a fire tube boiler - ANSWER>>Passes
Hard surface insulation (brick, concrete,...) - ANSWER>>Refractory
Helps keep shape and position of boiler - ANSWER>>Stays
Measured by Outside Diameter (OD) - ANSWER>>Tubing
Comes completely assembled with its own feedwater pumps, fuel system & draft fans -
ANSWER>>Package Boiler
The 3 basic types of boilers (per ASME) are: - ANSWER>>Firetube, Watertube, Cast Iron
Steam boilers have __________ ___________ to control burner (turn burner on and off) -
ANSWER>>Pressure Controls
