BOILER OPERATOR LICENSING EXAM QUESTIONS & CORRECT SOLUTIONS

1



BOILER OPERATOR LICENSING
EXAM QUESTIONS & CORRECT
SOLUTIONS



1 or more safety valves - correct-answer - all steam boilers must have




Locked closed - correct-answer - before anyone enters the boiler drum, the main

steam stop valve, bottom blowdown valves, & feedwater valves should be




212 degrees F - correct-answer - at atmospheric pressure, water begins to boil at

approximately




Fuel oil, gas, & coal - correct-answer - fuels most commonly used in boilers

, 2




Steam pressure gauge - correct-answer - must be connected to the highest part of

the steam side of the boiler




Half full - correct-answer - with an NOWL in a boiler, the gauge glass is

approximately




Foaming - correct-answer - a high surface tension on top of the boiler water can

lead to




Mud drum - correct-answer - Bottom blowdown on a boiler removes sludge &

sediment from the




Tin - correct-answer - a boiler fusible plug is brass or bronze with a core of

, 3




Pounds per square inch - correct-answer - a steam pressure gauge is calibrated in




Try cocks - correct-answer - a secondary means of determining boiler water level




Oily waste rag storage - correct-answer - fires caused by spontaneous combustion

are most likely to occur in the




Steam - correct-answer - a siphon installed between the boiler & the pressure

gauge protects the Bourdon tube from




Prevent formation of scale - correct-answer - boiler feedwater is chemically

treated to