Boiler Operator Licensing Exam Questions with Correct Answers

Boiler Operator Licensing Exam Questions with Correct Answers 1 or more safety valves - Answer-all steam boilers must have Locked closed - Answer-before anyone enters the boiler drum, the main steam stop valve, bottom blowdown valves, & feedwater valves should be 212 degrees F - Answer-at atmospheric pressure, water begins to boil at approximately Fuel oil, gas, & coal - Answer-fuels most commonly used in boilers Steam pressure gauge - Answer-must be connected to the highest part of the steam side of the boiler Half full - Answer-with an NOWL in a boiler, the gauge glass is approximately Foaming - Answer-a high surface tension on top of the boiler water can lead to Mud drum - Answer-Bottom blowdown on a boiler removes sludge & sediment from the Tin - Answer-a boiler fusible plug is brass or bronze with a core of Pounds per square inch - Answer-a steam pressure gauge is calibrated in Try cocks - Answer-a secondary means of determining boiler water level Oily waste rag storage - Answer-fires caused by spontaneous combustion are most likely to occur in the Steam - Answer-a siphon installed between the boiler & the pressure gauge protects the Bourdon tube from Prevent formation of scale - Answer-boiler feedwater is chemically treated to Inside tube surface - Answer-in a firetube boiler, soot accumulates on the 1.5 times the MAWP - Answer-the pressure applied on the boiler during a hydrostatic test should be Decreased - Answer-as fuel oil is heated, its viscosity is Chimney - Answer-the induced draft fan is located between the boiler & the Flash when exposed to an open flame - Answer-the flash point of fuel oil is the minimum temperature at which the fuel will Burn continually - Answer-the fire point of fuel oil is the minimum temperature at which the fuel will Lowest; flow - Answer-the pour point of fuel oil is the ____ temperature at which fuel oil will ____ Dangerous to handle - Answer-fuel oil with a low flash point is Pressure control - Answer-the operating range of a steam boiler is controlled by a Condensate in the line - Answer-water hammer in steam lines is caused by Manometer - Answer-measures the difference in pressure between 2 points, measures draft Lowest load - Answer-the best time to blowdown a boiler is when it is at its Silica gel - Answer-Boilers that are laid up dry have trays of ____ put in the steam & water drums to absorb moisture