Boiler Operator Licensing Exam | 135 Questions With Complete Solutions.

1 or more safety valves - all steam boilers must have Locked closed - before anyone enters the boiler drum, the main steam stop valve, bottom blowdown valves, & feedwater valves should be 212 degrees F - at atmospheric pressure, water begins to boil at approximately Fuel oil, gas, & coal - fuels most commonly used in boilers Steam pressure gauge - must be connected to the highest part of the steam side of the boiler Half full - with an NOWL in a boiler, the gauge glass is approximately Foaming - a high surface tension on top of the boiler water can lead to Mud drum - Bottom blowdown on a boiler removes sludge & sediment from the Tin - a boiler fusible plug is brass or bronze with a core of Pounds per square inch - a steam pressure gauge is calibrated in Try cocks - a secondary means of determining boiler water level Oily waste rag storage - fires caused by spontaneous combustion are most likely to occur in the Steam - a siphon installed between the boiler & the pressure gauge p