Minnesota Special Engineer Boiler License Practice
Exam: Questions & Answers: Guaranteed A+ Score
Solution
/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? -
Answer-10 Sq. Ft. Heating Surface
/.What is meant by the term "Low Pressure Boiler"? - Answer-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)? - Answer-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? - Answer-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? - Answer-
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? - Answer-Safety valve and/or an ASME approved safety relief valve.
/.A Tri indicator could be found on a: - Answer-Hot water boiler
/.A tri indicator would inform the boiler operator of what? - Answer-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? - Answer-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? - Answer-Steam first then hot water.
/.Some of the things you could find on a steam boiler (or hot water boiler) are what? -
Answer-Low water cut off, safety valve or safety relief valve, pressure gauge.
, /.What devices would only be found on a steam boiler? - Answer-Steam pressure
gauge, tricocks, Pressuretrols
/.An expansion tank or compression tank would be used in what? - Answer-Hot water
boiler
/.What is the purpose of the expansion tank? - Answer-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? - Answer-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? - Answer-
Have the valve repaired or replaced.
/.Tri cocks or gauge cocks are sued on a steam boiler to indicate? - Answer-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? - Answer-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? - Answer-Water
in the boiler.
/.True or False: Bottom blow down valves are used for both steam and hot water. -
Answer-True
/.Safety valves or safety relief valves should be manually tested at least...? - Answer-
Monthly
/.The low water cut out is one of the most important electrical/mechanical devices on
your boiler. How often should you test it? - Answer-Daily
/.What device must be located between a hot water boiler and the expansion tank? -
Answer-A shut off valve so the expansion can be isolated and drained during operation
of the boiler.
/.On a hot water boiler, every time the burner operates the safety relief valve opens.
Why? - Answer-The expansion tank is water logged, or the isolating valve for the
expansion tank is closed.
/.An Aquastat is used on a...? - Answer-Hot water boiler
/.To reduce thermal shock on hot water boilers, what devices are used? - Answer-Low
limit or low fire hold control, three way valve, run around pump.
Exam: Questions & Answers: Guaranteed A+ Score
Solution
/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? -
Answer-10 Sq. Ft. Heating Surface
/.What is meant by the term "Low Pressure Boiler"? - Answer-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)? - Answer-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? - Answer-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? - Answer-
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? - Answer-Safety valve and/or an ASME approved safety relief valve.
/.A Tri indicator could be found on a: - Answer-Hot water boiler
/.A tri indicator would inform the boiler operator of what? - Answer-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? - Answer-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? - Answer-Steam first then hot water.
/.Some of the things you could find on a steam boiler (or hot water boiler) are what? -
Answer-Low water cut off, safety valve or safety relief valve, pressure gauge.
, /.What devices would only be found on a steam boiler? - Answer-Steam pressure
gauge, tricocks, Pressuretrols
/.An expansion tank or compression tank would be used in what? - Answer-Hot water
boiler
/.What is the purpose of the expansion tank? - Answer-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? - Answer-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? - Answer-
Have the valve repaired or replaced.
/.Tri cocks or gauge cocks are sued on a steam boiler to indicate? - Answer-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? - Answer-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? - Answer-Water
in the boiler.
/.True or False: Bottom blow down valves are used for both steam and hot water. -
Answer-True
/.Safety valves or safety relief valves should be manually tested at least...? - Answer-
Monthly
/.The low water cut out is one of the most important electrical/mechanical devices on
your boiler. How often should you test it? - Answer-Daily
/.What device must be located between a hot water boiler and the expansion tank? -
Answer-A shut off valve so the expansion can be isolated and drained during operation
of the boiler.
/.On a hot water boiler, every time the burner operates the safety relief valve opens.
Why? - Answer-The expansion tank is water logged, or the isolating valve for the
expansion tank is closed.
/.An Aquastat is used on a...? - Answer-Hot water boiler
/.To reduce thermal shock on hot water boilers, what devices are used? - Answer-Low
limit or low fire hold control, three way valve, run around pump.
