Boiler Operator Licensing Exam

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 C