MN SPECIAL ENGINEERS PRACTICE EXAM 2024

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 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 f°. A person holding a current state of Minnesota Special Engineers Licence could be in charge of or a shift engineer in what size plants(s)? - correct answer High and low pressure boiler not to exceed a total of 50 horsepower, or a shift engineer in a 100 Horsepower plant. Special Engineer may serve as apprentice of what size water/liquid or steam/vapor boiler? - correct answer In any plant regardless of size under the direct supervision of the properly licensed engineer. 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. The valve or valves that must relive all excess pressure on a steam or hot water boiler are what? - co