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MINNESOTA SPECIAL ENGINEER BOILER
LICENSE PRACTICE EXAM QUESTIONS WITH
100% 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?
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)?
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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?
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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.
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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?