Minnesota Special Boiler License Practice Exam Q&A Latest Updates

Minnesota Special Boiler License Practice Exam Q&A Latest Updates How many way can heat be transferred? - Three (Conduction -- Convection -- Radiation) How may types of low pressure are there? - Three Boiler and boiler fitting used in the state of Minnesota must be constructed to what code? - A.S.M.E What controls the starting ans stopping of the burner by sending the temperature of the water in a hot water boiler? - Aqua Stat When a hydrostatic test of a boiler exceeds the maximum allowed working pressure each safety valve, if left attached to the boiler, should: - Have its valve disc held to its seat by means of testing clamp or "gag" Heat can be transferred in three ways and they are: - Conduction --Convection - Radiation The first sequence in the series of automatic burner control is: - Purging Can a low water low water condition i a hot water heating type boiler? - Yes, for numerous reasons Other than a safety relieve valve what other safety device should be installed on a hot water heating boiler? - Low water cut off Each boiler in a battery (pipe together sharing the same common header) must have: - A main stem stop what removes air from a hot water boiler system? - Air Control In a stem boiler system, the unit that turns be burner on and off based on steam pressure is the: - Pressure Control If water in the gauge is not visible because of failure of the feed water supply, what should be done? - Shut off the fuel to the burner and secure the boiler. What conditions are necessary to cause a furnace explosion? - Accumulation of unburned fuel, oxygen and an ignition source The LWCO should be tested: - Daily Gauge pressure plus 14.7 psi is called what? - Absolute pressure The evaporation of 34.5 ponds of water per hour from and at a temperature of 212 degrees Fahrenheit is defined as: - One boiler horsepower When a safety valve opens and closes rapidly it is referred to as - Chattering Furnace explosions are caused by a buildup of combustible gases, or vapors in the combustion chamber, what is the term used to remedy this condition? - Purging Why is a pigtail or siphon required in steam pressure gauge lines? - to protect the gauge from a high temperature. In a stem boiler system, what is the term used for replacing the water that has been lost by blowing down the boiler through leaks in the system? - A make up water On steam boiler system, why are bottom blow down valves installed at the lowest point of the waterside of boilers? - To remove sludge and sediment. Boiler heating is defining as : - Water on one side hot gases on the other side. In a fire tube boiler, the water - Surrounds the tubes When the bottom blow down valves are used on a steam boiler, what valve located closet to the boiler shell? - The quick opening valve What is the function of an automatic city water feeder on a low pressure boiler? - To control water to the feed water tank The purpose of a safety valve on a steam boiler is to: - To prevent the boiler from exceeding its MAWP The control designed as a safety back up, should the operating fail is: - A high limit control The capacity of a safety valve used on a steam boiler is measure in: - pounds of steam that can be discharge in one hour. How does a pressuretrol attach to the steam space of boiler control the burner operation? - On pressure decrease - starts the burner. What action should an operating engineer take if a defect is discovered in a boiler requiring repairs not of a routine nature? - Notify the boiler inspector. Boiler are considered low pressure when? - Steam Boiler are not over 15 psi and liquid boiler are not over psi 160 and 250 deg. F