MINNESOTA SPECIAL ENGINEER BOILER LICENSE PRACTICE EXAM
QUESTIONS WITH 100% CORRECT ANSWERS
For the purpose of rating boiler horsepower for an Engineers License only, how many square feet of
boiler surface shall be equivalent to one boiler horsepower on a boiler? -Ans>>10 Sq. Ft. Heating
Surface
What is meant by the term "Low Pressure Boiler"? -Ans>>Boilers operating at a steam or other vapor
pressure of 15psig or less, or a hot water or other liquid boiler in which the pressure does not exceed
160 psig or a temperature of 250 degrees F.
A person holding a current State of Minnesota Special Engineers License could be in charge of, or a
shift engineer in what size plant(s)? -Ans>>High and Low pressure boilers not to exceed a total of 50
boiler horsepower, or a shift engineer in a 100 horsepower plant.
Special Engineer may serve as an apprentice of what size water/liquid or steam/vapor boiler? -
Ans>>In any plant regardless of size under the direct supervision of a properly licensed engineer.
The purpose of low water cut out on a steam or hot water boiler is to what? -Ans>>Shut off the
burner when a low water condition exists.
The valve or valves that must relieve all excess pressure on a steam or hot water boiler are what? -
Ans>>Safety valve and/or an ASME approved safety relief valve.
A Tri indicator could be found on a: -Ans>>Hot water boiler
A tri indicator would inform the boiler operator of what? -Ans>>The TEMPERATURE of the water, the
PRESSURE of the water in PSIG, and the ALTITUDE of water in feet.
What is the destructive force in a steam or hot water boiler explosion? -Ans>>The instant release of
energy stored in the water as heat.
An ASME approved safety relieve calve used on a hot water boiler is tested at the factory on what? -
Ans>>Steam first then hot water.
Some of the things you could find on a steam boiler (or hot water boiler) are what? -Ans>>Low water
cut off, safety valve or safety relief valve, pressure gauge.
What devices would only be found on a steam boiler? -Ans>>Steam pressure gauge, tricocks,
Pressuretrols
An expansion tank or compression tank would be used in what? -Ans>>Hot water boiler
What is the purpose of the expansion tank? -Ans>>To provide for expansion and contraction of the
water volume as its temperature varies.
On a hot water boiler, what is the purpose of the vent valve? -Ans>>To make sure there is water
inside the boiler and to vent any trapped air.
If the safety valve or ASME safety relief valve leaks you would do what? -Ans>>Have the valve
repaired or replaced.
Tri cocks or gauge cocks are sued on a steam boiler to indicate? -Ans>>The true water level inside the
boiler.
QUESTIONS WITH 100% CORRECT ANSWERS
For the purpose of rating boiler horsepower for an Engineers License only, how many square feet of
boiler surface shall be equivalent to one boiler horsepower on a boiler? -Ans>>10 Sq. Ft. Heating
Surface
What is meant by the term "Low Pressure Boiler"? -Ans>>Boilers operating at a steam or other vapor
pressure of 15psig or less, or a hot water or other liquid boiler in which the pressure does not exceed
160 psig or a temperature of 250 degrees F.
A person holding a current State of Minnesota Special Engineers License could be in charge of, or a
shift engineer in what size plant(s)? -Ans>>High and Low pressure boilers not to exceed a total of 50
boiler horsepower, or a shift engineer in a 100 horsepower plant.
Special Engineer may serve as an apprentice of what size water/liquid or steam/vapor boiler? -
Ans>>In any plant regardless of size under the direct supervision of a properly licensed engineer.
The purpose of low water cut out on a steam or hot water boiler is to what? -Ans>>Shut off the
burner when a low water condition exists.
The valve or valves that must relieve all excess pressure on a steam or hot water boiler are what? -
Ans>>Safety valve and/or an ASME approved safety relief valve.
A Tri indicator could be found on a: -Ans>>Hot water boiler
A tri indicator would inform the boiler operator of what? -Ans>>The TEMPERATURE of the water, the
PRESSURE of the water in PSIG, and the ALTITUDE of water in feet.
What is the destructive force in a steam or hot water boiler explosion? -Ans>>The instant release of
energy stored in the water as heat.
An ASME approved safety relieve calve used on a hot water boiler is tested at the factory on what? -
Ans>>Steam first then hot water.
Some of the things you could find on a steam boiler (or hot water boiler) are what? -Ans>>Low water
cut off, safety valve or safety relief valve, pressure gauge.
What devices would only be found on a steam boiler? -Ans>>Steam pressure gauge, tricocks,
Pressuretrols
An expansion tank or compression tank would be used in what? -Ans>>Hot water boiler
What is the purpose of the expansion tank? -Ans>>To provide for expansion and contraction of the
water volume as its temperature varies.
On a hot water boiler, what is the purpose of the vent valve? -Ans>>To make sure there is water
inside the boiler and to vent any trapped air.
If the safety valve or ASME safety relief valve leaks you would do what? -Ans>>Have the valve
repaired or replaced.
Tri cocks or gauge cocks are sued on a steam boiler to indicate? -Ans>>The true water level inside the
boiler.
