SPECIAL BOILER LICENSE PRACTICE EXAM
TEST PAPER 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉ 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
TEST PAPER 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉ 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
