Minnesota Special Engineer Boiler License Exam Test Bank |470 Questions with Verified Answers | Latest 2025/2026 Update | 100% Correct.

Minnesota Special Engineer Boiler License Exam i,- i,- i,- i,- i,- i,-




Test Bank |470 Questions with Verified Answers |
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Latest 2025/2026 Update | 100% Correct. i,- i,- i,- i,- i,-




What is one reason causing the expansion tank to fill with water?
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Air leaks from the gauge glass fitting.
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What would you do if you cam into a boiler room and found no
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water in the boiler?i,-Shut off the burner and allow boiler to
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cool.


What is the purpose of the bottom blow down on a steam boiler?
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i,-To remove sludge and sediment and to drain the boiler.
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When blowing down the water column the water should do
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what? Refill the gauge glass quickly.
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When doing the annual boiler inspection the boiler should...
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Water and fire side cleaned and inspection ports open.
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Purging is part of what cycle? i,- i,- i,- i,- i,- i,-i,- i,- Firing cycle i,-

,All steam traps will prevent steam from passing through them but
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will allow what to pass through them?
i,- Dirt, air, and
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condensate.


How do we know if we are using and approved safety valve for a
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steam boiler or a safety relief valve for a hot water boiler?
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spring loaded direct acting safety valve or safety relief valve.
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Before testing a low water fuel cut-out what must be done?
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The burner must be on.
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Heat can be transferred in how many ways?
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Aqua stats work by sensing:
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Name the different ways heat can be transferred and give a
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definition of each way. Radiation, Conduction, Convection
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How many types of boilers are there?
i,- i,- i,- i,- i,- i,- i,-i,- i,- Three: Fire tube, Water i,- i,- i,- i,-



tube, Cast iron sectional
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What type of boiler can be made larger?
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,What type of boiler has the water surrounding the tubes?
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tube


What type of boiler has the water running through the tubes?
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Water tube
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Boiler room log books area state of Minnesota requirement for
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ever boiler room, what are some of the things you should be
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writing down in the book? The log entry should start out with
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today's date NEXT what you did you do in the boiler room NEXT
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sign your namei,- i,-




What is condensate? i,- i,- i,-i,- i,- Condensed steam i,-




A firing cycle consists of events that safely controls the burning of
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a fuel. What even occur first?
i,- i,- Safety controls must be in the
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circuit.


After blowing down the water column and gauge glass you are
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looking for the: Water reentering the gauge glass to rise
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promptly.


For the purpose of rating boiler horsepower for an Engineers
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License only, how many square feet of boiler surface shall be
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, equivalent to one boiler horsepower on a boiler? i,- i,- i,- i,- i,- i,- i,- i,-i,- i,- 10 Sq. Ft. i,- i,- i,-



Heating Surface i,-




What is meant by the term "Low Pressure Boiler"?
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operating at a steam or other vapor pressure of 15psig or less, or
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a hot water or other liquid boiler in which the pressure does not
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exceed 160 psig or a temperature of 250 degrees F.
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A person holding a current State of Minnesota Special Engineers
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License could be in charge of, or a shift engineer in what size
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plant(s)? High and Low pressure boilers not to exceed a total
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of 50 boiler horsepower, or a shift engineer in a 100 horsepower
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plant.


Special Engineer may serve as an apprentice of what size
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water/liquid or steam/vapor boiler? In any plant regardless of
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size under the direct supervision of a properly licensed engineer.
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The purpose of low water cut out on a steam or hot water boiler
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is to what?
i,- Shut off the burner when a low water condition
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exists.