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SPECIAL ENGINEERS EX AM
VERIFIED TO PASS
Question: For the purpose of rating boiler horsepower for
an engineers licence only, how many square feet of boiler surface shall be equivalent to one boiler horsepower on a boiler?
Correct answer: 10 sq. Ft. heating surface
Question: What is meant by the term low pressure boiler?
Correct answer: Boilers operating at a steam or other
vapor pressure of 15 psig 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.
Question: A person holding a current state of Minnesota
special engineers license could be in charge of, or a shift engineer in what size plant?
Correct answer: High and low pressure boilers not to
exceed a total of 50 boiler horsepower, or a shift engineer in a 100 horsepower plant.
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Question: Special engineer may serve as an apprentice of
what size water/ or steam/vapor boiler?
Correct answer: In any plant regardless of size under the
direct supervision of the properly licensed engineer.
Question: The purpose of the low water cut out on a
steam or hot water boiler is to what?
Correct answer: Shut off the burner when a low water
condition exists.
Question: The valve or valves that must relieve all excess
pressure on a steam or hot water boiler are what?
Correct answer: Safety valve and/or an ASME approved
safety relief valve.
Question: A tri indicator could be found on a .....
Correct answer: Hot water boiler
Question: A tri indicator would inform the boiler operator
of what?
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Correct answer: The temperature of the water, the
pressure of water in psig, and the altitude of water in feet.
Question: What is the destructive force in a steam or hot
water boiler explosion?
Correct answer: The instant release of energy stored in the
water as heat.
Question: An ASME approved safety relief valve used on
a hot water boiler is tested at the factory on what?
Correct answer: Steam first, then hot water.
Question: Some of the things you could find on a steam or
hot water boiler are what?
Correct answer: Low water cut off, safety valve or safety
relief valve, pressure gauge
Question: What devices would only be found on a steam
boiler?
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Correct answer: Steam pressure gauge, tricocks,
pressuretrols.
Question: An expansion tank or compression tank would
be used with a what?
Correct answer: Hot water boiler
Question: What is the purpose of the expansion tank?
Correct answer: To provide for expansion and contraction
of the water volume as its temperature varies.
Question: On a hot water boiler what is the purpose of the
vent valve?
Correct answer: To make sure there is water inside the
boiler and to vent any trapped air.
Question: If the safety valve or ASME safety relief valve
leaks you would do what?