Arkansas Boiler License Exam3/25/2021
Low-water cut-off A low-water cut-off device does not affect the fuel to the boiler when the water level drops.STEAM SUPPLY STOP VALVE The valve installed at the steam outlet of the boiler to shut off the flow of steam STEAM PRESSURE GAUGE Indicates the steam pressure in the boiler in pounds per square inch STEAM GAUGE SYPHON The device installed between the steam gauge and the boiler to provide a water seal, so that live steam will not enter the gauge to cause a false reading or damage to the gauge INSPECTORS TEST GAUGE CONNECTION AND COCK Provides the necessary connection to check the accuracy of the steam pressure gauge on the boiler.WATER COLUMN The hollow casting or forging connected at the top to the boilers steam space and at bottom to the water space.
The water gauge glass and water test cocks are installed on the column. DRAIN VALVE UNDER THE WATER COLUMN AND SWITCH To provide a means for daily flushing under the water column and water level controls to keep the chamber and lines clean, so the water will register accurately in the glass. Also provides a means of testing the low water cutoff BLOWOFF VALVE To provide a method of draining, flushing and blowing off the boiler at the low point to remove the concentrated solids, sediment, seals and sludge of keeping the boiler clean WATER FEED INLET STOP VALVE The shutoff valve required next to the boiler on the water feed inlet, so that the entire line can be manually shut off if it is necessary to work on the pump or check valve. WATER FEED INLET CHECK VALVE The check valve on the water feed inlet that closes to prevent steam or water from the boiler backing up into the water feed line LOW WATER CUTOFF The control required on all boilers to shut off the main fuel burner when the water reaches the lowest, safe, permissible level. STEAM PRESSURE OPERATING CONTROL To maintain the desired steam operating pressure on the boiler by regulating the burner to the steam pressure setting HI-LIMIT PRESSURE CONTROL Is in addition to the operating control to shut off the main fuel burner supply when the pressure in the boiler exceeds the desired maximum setting 100 FLAME SAFEGUARD The pilot safety device to shut off the main fuel burner valve and the pilot burner in the event of a pilot failure and to prevent the main burner from turning on until a safe pilot is established Which valve is between the boiler and the return pump Check Valve What is the function of the check valve To prevent the water from returning to the condensation tank from the boiler after the pump shuts off Four safety features required on the steam boiler are: Safety relief valve, blow-down valve, low water cut-off, and pressure gauge Safety relief valves should be set by: Qualified safety valve technicianfirm Which pressure is considered to be that of a low-pressure boiler 0 - 15 PSI MAWP What could happen if a steam valve is opened quickly Water could be siphoned out of the boiler causing damage to boiler and steam lines. Why are steam lines insulated To prevent loss of heat during steam transfer What operating pressure indicates a high-pressure boiler 16 PSI and above True A steam valve should be opened slowly. True or false True Improper mixtures of gas and air causes soot in boiler flues. True or false What is a water injector (feed pump) A mechanical device for forcing water into a boiler against high pressures. What is the purpose of a baffle wall in a boiler To distribute flame evenly False If a boiler is not kept clean internally, scales will form and cause the boiler not to blister. Arkansas Boiler Exam License Shall BeTrue or false True A boiler operator operating a boiler without a license shall be guilty of a misdemeanor and upon conviction thereof shall be punished by a fine of not less than 25.00 and not more than 100.00, and in addition may be imprisoned for not more than 2 years, or both. True or false A boiler operator must have the following number of months on-the-job training before he can take the operators examination. Water boilers at what temperature 212F False If you went into a boiler room and the fire was on, and there was not water in the boiler, you should immediately add water to the boiler. True or False In a fire tube boiler the water flows through the tubes. True or False What is the purpose of a safety relief valve on the boiler To relieve the boiler pressure when it exceeds the MAWP (maximum allowable working pressure) and thereby prevent an explosion. What is an induced draft Fan or fans on the exhaust side of boiler pulling air through the boiler. A steam trap is a device used to release condensation and hold steam in a radiator or return line. True or false True Should a pressure relief valve open when the MAWP is exceeded by 6 Yes False A boiler operator operating a boiler that he knows is unsafe may, or may NOT have his license revoked. Which type of material is used for boiler gaskets Asbestos or Neoprene The main purpose of draining the glass gauge is to verify that the pipes to the gauge are clean and open. True or False True Water is changed to steam by: The application of heat. A safety device used to cut fuel to the boiler when the water level falls below a safe level.
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