Minnesota Special Engineer Boiler License Practice Exam Questions with complete solution 2024

Minnesota Special Engineer Boiler License Practice Exam Questions 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? - correct answer 10 Sq. Ft. Heating Surface What is meant by the term "Low Pressure Boiler"? - correct 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)? - 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. Special Engineer may serve as an apprentice of what size water/liquid or steam/vapor boiler? - correct 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? - correct 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? - correct answer Safety valve and/or an ASME approved safety relief valve. A Tri indicator could be found on a: - correct answer Hot water boiler A tri indicator would inform the boiler operator of what? - correct 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? - correct answer The instant release of energy stored in the water as heat.