Minnesota Special Engineer Boiler
License Exam Questions and Correct
Answers| Latest Update
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?
10 Sq. Ft. Heating Surface
What is meant by the term "Low Pressure 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.
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)?
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?
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?
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?
Safety valve and/or an ASME approved safety relief valve.
A Tri indicator could be found on a:
Hot water boiler
A tri indicator would inform the boiler operator of what?
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?
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?
Steam first then hot water.
Some of the things you could find on a steam boiler (or hot water boiler) are
what?
Low water cut off, safety valve or safety relief valve, pressure gauge.
What devices would only be found on a steam boiler?
Steam pressure gauge, tricocks, Pressuretrols
An expansion tank or compression tank would be used in what?
Hot water boiler
What is the purpose of the expansion tank?
, 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?
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?
Have the valve repaired or replaced.
Tri cocks or gauge cocks are sued on a steam boiler to indicate?
The true water level inside the boiler.
On a steam or hot water boiler, the safety valve or safety relief valve could be
tested by?
When the boiler is running lifting the lever on the valve or raising the pressure
until they operate.
Before starting a steam or hot water boiler you should check for what?
Water in the boiler.
License Exam Questions and Correct
Answers| Latest Update
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?
10 Sq. Ft. Heating Surface
What is meant by the term "Low Pressure 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.
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)?
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?
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?
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?
Safety valve and/or an ASME approved safety relief valve.
A Tri indicator could be found on a:
Hot water boiler
A tri indicator would inform the boiler operator of what?
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?
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?
Steam first then hot water.
Some of the things you could find on a steam boiler (or hot water boiler) are
what?
Low water cut off, safety valve or safety relief valve, pressure gauge.
What devices would only be found on a steam boiler?
Steam pressure gauge, tricocks, Pressuretrols
An expansion tank or compression tank would be used in what?
Hot water boiler
What is the purpose of the expansion tank?
, 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?
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?
Have the valve repaired or replaced.
Tri cocks or gauge cocks are sued on a steam boiler to indicate?
The true water level inside the boiler.
On a steam or hot water boiler, the safety valve or safety relief valve could be
tested by?
When the boiler is running lifting the lever on the valve or raising the pressure
until they operate.
Before starting a steam or hot water boiler you should check for what?
Water in the boiler.
