Minnesota Special Engineer Boiler License Practice Exam Questions,Safe
Boiler Operation Fundamentals—Special Engineer's Guide for the State of
Minnesota
For the purpose of rating boiler horsepower for an 10 Sq. Ft. Heating Surface
Engineers License only, how many square feet of
boiler surface shall be equivalent to one boiler
horsepower on a boiler?
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 High and Low pressure boilers not to exceed a total of 50 boiler horsepower, or a
Engineers License could be in charge of, or a shift shift engineer in a 100 horsepower plant.
engineer in what size plant(s)?
Special Engineer may serve as an apprentice of what size In any plant regardless of size under the direct supervision of a properly licensed
water/liquid or steam/vapor boiler? engineer.
The purpose of low water cut out on a steam or hot water Shut off the burner when a low water condition exists.
boiler is to what?
The valve or valves that must relieve all excess Safety valve and/or an ASME approved safety relief valve.
pressure on a steam or hot water boiler are what?
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 The instant release of energy stored in the water as heat.
boiler explosion?
An ASME approved safety relieve calve used on a hot Steam first then hot water.
water boiler is tested at the factory on what?
Some of the things you could find on a steam boiler (or Low water cut off, safety valve or safety relief valve, pressure gauge.
hot water boiler) are what?
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 Hot water boiler
what?
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 To make sure there is water inside the boiler and to vent any trapped air.
valve?
If the safety valve or ASME safety relief valve leaks you Have the valve repaired or replaced.
would do what?
Tri cocks or gauge cocks are sued on a steam boiler to The true water level inside the boiler.
indicate?
On a steam or hot water boiler, the safety valve or safety When the boiler is running lifting the lever on the valve or raising the pressure until
relief valve could be tested by? they operate.
Before starting a steam or hot water boiler you should Water in the boiler.
check for what?
True or False: Bottom blow down valves are used for both True
steam and hot water.
Safety valves or safety relief valves should be manually Monthly
tested at least...?
The low water cut out is one of the most important Daily
electrical/mechanical devices on your boiler. How often
should you test it?
What device must be located between a hot water boiler A shut off valve so the expansion can be isolated and drained during operation of
and the expansion tank? the boiler.
On a hot water boiler, every time the burner operates the The expansion tank is water logged, or the isolating valve for the expansion tank is
safety relief valve opens. Why? closed.
Boiler Operation Fundamentals—Special Engineer's Guide for the State of
Minnesota
For the purpose of rating boiler horsepower for an 10 Sq. Ft. Heating Surface
Engineers License only, how many square feet of
boiler surface shall be equivalent to one boiler
horsepower on a boiler?
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 High and Low pressure boilers not to exceed a total of 50 boiler horsepower, or a
Engineers License could be in charge of, or a shift shift engineer in a 100 horsepower plant.
engineer in what size plant(s)?
Special Engineer may serve as an apprentice of what size In any plant regardless of size under the direct supervision of a properly licensed
water/liquid or steam/vapor boiler? engineer.
The purpose of low water cut out on a steam or hot water Shut off the burner when a low water condition exists.
boiler is to what?
The valve or valves that must relieve all excess Safety valve and/or an ASME approved safety relief valve.
pressure on a steam or hot water boiler are what?
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 The instant release of energy stored in the water as heat.
boiler explosion?
An ASME approved safety relieve calve used on a hot Steam first then hot water.
water boiler is tested at the factory on what?
Some of the things you could find on a steam boiler (or Low water cut off, safety valve or safety relief valve, pressure gauge.
hot water boiler) are what?
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 Hot water boiler
what?
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 To make sure there is water inside the boiler and to vent any trapped air.
valve?
If the safety valve or ASME safety relief valve leaks you Have the valve repaired or replaced.
would do what?
Tri cocks or gauge cocks are sued on a steam boiler to The true water level inside the boiler.
indicate?
On a steam or hot water boiler, the safety valve or safety When the boiler is running lifting the lever on the valve or raising the pressure until
relief valve could be tested by? they operate.
Before starting a steam or hot water boiler you should Water in the boiler.
check for what?
True or False: Bottom blow down valves are used for both True
steam and hot water.
Safety valves or safety relief valves should be manually Monthly
tested at least...?
The low water cut out is one of the most important Daily
electrical/mechanical devices on your boiler. How often
should you test it?
What device must be located between a hot water boiler A shut off valve so the expansion can be isolated and drained during operation of
and the expansion tank? the boiler.
On a hot water boiler, every time the burner operates the The expansion tank is water logged, or the isolating valve for the expansion tank is
safety relief valve opens. Why? closed.
