MINNESOTA SPECIAL ENGINEER
BOILER LICENSE PRACTICE EXAM
QUESTIONS & ANSWERS | VERIFIED
STUDY GUIDE
10 Sq. Ft. Heating Surface - 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?
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. - correct answers ✔✔What is meant by the term "Low Pressure Boiler"?
High and Low pressure boilers not to exceed a total of 50 boiler horsepower, or a shift
engineer in a 100 horsepower plant. - correct answers ✔✔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)?
In any plant regardless of size under the direct supervision of a properly licensed
engineer. - correct answers ✔✔Special Engineer may serve as an apprentice of what
size water/liquid or steam/vapor boiler?
Shut off the burner when a low water condition exists. - correct answers ✔✔The
purpose of low water cut out on a steam or hot water boiler is to what?
Safety valve and/or an ASME approved safety relief valve. - correct answers ✔✔The
valve or valves that must relieve all excess pressure on a steam or hot water boiler are
what?
Hot water boiler - correct answers ✔✔A Tri indicator could be found on a:
The TEMPERATURE of the water, the PRESSURE of the water in PSIG, and the
ALTITUDE of water in feet. - correct answers ✔✔A tri indicator would inform the boiler
operator of what?
The instant release of energy stored in the water as heat. - correct answers ✔✔What is
the destructive force in a steam or hot water boiler explosion?
Steam first then hot water. - correct answers ✔✔An ASME approved safety relieve
calve used on a hot water boiler is tested at the factory on what?
Low water cut off, safety valve or safety relief valve, pressure gauge. - correct answers
✔✔Some of the things you could find on a steam boiler (or hot water boiler) are what?
Steam pressure gauge, tricocks, Pressuretrols - correct answers ✔✔What devices
would only be found on a steam boiler?
Hot water boiler - correct answers ✔✔An expansion tank or compression tank would be
used in what?
To provide for expansion and contraction of the water volume as its temperature varies.
- correct answers ✔✔What is the purpose of the expansion tank?
To make sure there is water inside the boiler and to vent any trapped air. - correct
answers ✔✔On a hot water boiler, what is the purpose of the vent valve?
Have the valve repaired or replaced. - correct answers ✔✔If the safety valve or ASME
safety relief valve leaks you would do what?
The true water level inside the boiler. - correct answers ✔✔Tri cocks or gauge cocks
are sued on a steam boiler to indicate?
BOILER LICENSE PRACTICE EXAM
QUESTIONS & ANSWERS | VERIFIED
STUDY GUIDE
10 Sq. Ft. Heating Surface - 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?
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. - correct answers ✔✔What is meant by the term "Low Pressure Boiler"?
High and Low pressure boilers not to exceed a total of 50 boiler horsepower, or a shift
engineer in a 100 horsepower plant. - correct answers ✔✔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)?
In any plant regardless of size under the direct supervision of a properly licensed
engineer. - correct answers ✔✔Special Engineer may serve as an apprentice of what
size water/liquid or steam/vapor boiler?
Shut off the burner when a low water condition exists. - correct answers ✔✔The
purpose of low water cut out on a steam or hot water boiler is to what?
Safety valve and/or an ASME approved safety relief valve. - correct answers ✔✔The
valve or valves that must relieve all excess pressure on a steam or hot water boiler are
what?
Hot water boiler - correct answers ✔✔A Tri indicator could be found on a:
The TEMPERATURE of the water, the PRESSURE of the water in PSIG, and the
ALTITUDE of water in feet. - correct answers ✔✔A tri indicator would inform the boiler
operator of what?
The instant release of energy stored in the water as heat. - correct answers ✔✔What is
the destructive force in a steam or hot water boiler explosion?
Steam first then hot water. - correct answers ✔✔An ASME approved safety relieve
calve used on a hot water boiler is tested at the factory on what?
Low water cut off, safety valve or safety relief valve, pressure gauge. - correct answers
✔✔Some of the things you could find on a steam boiler (or hot water boiler) are what?
Steam pressure gauge, tricocks, Pressuretrols - correct answers ✔✔What devices
would only be found on a steam boiler?
Hot water boiler - correct answers ✔✔An expansion tank or compression tank would be
used in what?
To provide for expansion and contraction of the water volume as its temperature varies.
- correct answers ✔✔What is the purpose of the expansion tank?
To make sure there is water inside the boiler and to vent any trapped air. - correct
answers ✔✔On a hot water boiler, what is the purpose of the vent valve?
Have the valve repaired or replaced. - correct answers ✔✔If the safety valve or ASME
safety relief valve leaks you would do what?
The true water level inside the boiler. - correct answers ✔✔Tri cocks or gauge cocks
are sued on a steam boiler to indicate?
