MINNESOTA SPECIAL ENGINEER BOILER LICENSE PRACTICE EXAM QUESTIONS AND CORRECT QUESTIONS

MINNESOTA SPECIAL ENGINEER
BOILER LICENSE PRACTICE EXAM
QUESTIONS AND CORRECT
QUESTIONS


For the purpose of rating boiler horsepower for an Engineers License only, how many squ
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are feet of boiler surface shall be equivalent to one boiler horsepower on a boiler? - ans-
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10 Sq. Ft. Heating Surface
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What is meant by the term "Low Pressure Boiler"? - ans-
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Boilers operating at a steam or other vapor pressure of 15psig or less, or a hot water or ot
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her liquid boiler in which the pressure does not exceed 160 psig or a temperature of 250 d
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egrees F. rr




A person holding a current State of Minnesota Special Engineers License could be in char
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ge of, or a shift engineer in what size plant(s)? - ans-
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High and Low pressure boilers not to exceed a total of 50 boiler horsepower, or a shift eng
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ineer in a 100 horsepower plant.
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Special Engineer may serve as an apprentice of what size water/liquid or steam/
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vapor boiler? - ans- rr rr rr


In any plant regardless of size under the direct supervision of a properly licensed enginee
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r.

The purpose of low water cut out on a steam or hot water boiler is to what? - ans-
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Shut off the burner when a low water condition exists.
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The valve or valves that must relieve all excess pressure on a steam or hot water boiler ar
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e what? - ans-Safety valve and/or an ASME approved safety relief valve.
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A Tri indicator could be found on a: - ans-Hot water boiler
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A tri indicator would inform the boiler operator of what? - ans-
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The TEMPERATURE of the water, the PRESSURE of the water in PSIG, and the ALTITU
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DE of water in feet.
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, What is the destructive force in a steam or hot water boiler explosion? - ans-
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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
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on what? - ans-Steam first then hot water.
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Some of the things you could find on a steam boiler (or hot water boiler) are what? - ans-
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Low water cut off, safety valve or safety relief valve, pressure gauge.
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What devices would only be found on a steam boiler? - ans-
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Steam pressure gauge, tricocks, Pressuretrols
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An expansion tank or compression tank would be used in what? - ans-Hot water boiler
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What is the purpose of the expansion tank? - ans-
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To provide for expansion and contraction of the water volume as its temperature varies.
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On a hot water boiler, what is the purpose of the vent valve? - ans-
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To make sure there is water inside the boiler and to vent any trapped air.
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If the safety valve or ASME safety relief valve leaks you would do what? - ans-
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Have the valve repaired or replaced.
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Tri cocks or gauge cocks are sued on a steam boiler to indicate? - ans-
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The true water level inside the boiler.
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On a steam or hot water boiler, the safety valve or safety relief valve could be tested by? -
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ans-
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When the boiler is running lifting the lever on the valve or raising the pressure until they op
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erate.

Before starting a steam or hot water boiler you should check for what? - ans-
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Water in the boiler. rr rr rr




True or False: Bottom blow down valves are used for both steam and hot water. - ans-
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True

Safety valves or safety relief valves should be manually tested at least...? - ans-Monthly
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The low water cut out is one of the most important electrical/
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mechanical devices on your boiler. How often should you test it? - ans-Daily
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What device must be located between a hot water boiler and the expansion tank? - ans-
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A shut off valve so the expansion can be isolated and drained during operation of the boil
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er.