Boiler Operator Licensing Exam
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 protects the Bourdon
tube from
Prevent formation of scale boiler feedwater is chemically treated to
Inside tube surface in a firetube boiler, soot accumulates on the
1.5 times the MAWP the pressure applied on the boiler during a hydrostatic test should be
Decreased as fuel oil is heated, its viscosity is
Chimney the induced draft fan is located between the boiler & the
Flash when exposed to an open flame the flash point of fuel oil is the minimum temperature at which the fuel will
Burn continually the fire point of fuel oil is the minimum temperature at which the fuel will
Lowest; flow the pour point of fuel oil is the ____ temperature at which fuel oil will ____
Dangerous to handle fuel oil with a low flash point is
Pressure control the operating range of a steam boiler is controlled by a
Condensate in the line water hammer in steam lines is caused by
Manometer measures the difference in pressure between 2 points, measures draft
Lowest load the best time to blowdown a boiler is when it is at its
Silica gel Boilers that are laid up dry have trays of____put in the steam & water drums to
absorb moisture
Mixture; atomization; temperature; time required to obtain complete combustion of a fuel
Pitting oxygen in the boiler causes
Secure the fires & feedwater when the boiler low water alarm is ringing, the operator should
Purging the furnace after ignition failure a furnace explosion can be prevented by
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 protects the Bourdon
tube from
Prevent formation of scale boiler feedwater is chemically treated to
Inside tube surface in a firetube boiler, soot accumulates on the
1.5 times the MAWP the pressure applied on the boiler during a hydrostatic test should be
Decreased as fuel oil is heated, its viscosity is
Chimney the induced draft fan is located between the boiler & the
Flash when exposed to an open flame the flash point of fuel oil is the minimum temperature at which the fuel will
Burn continually the fire point of fuel oil is the minimum temperature at which the fuel will
Lowest; flow the pour point of fuel oil is the ____ temperature at which fuel oil will ____
Dangerous to handle fuel oil with a low flash point is
Pressure control the operating range of a steam boiler is controlled by a
Condensate in the line water hammer in steam lines is caused by
Manometer measures the difference in pressure between 2 points, measures draft
Lowest load the best time to blowdown a boiler is when it is at its
Silica gel Boilers that are laid up dry have trays of____put in the steam & water drums to
absorb moisture
Mixture; atomization; temperature; time required to obtain complete combustion of a fuel
Pitting oxygen in the boiler causes
Secure the fires & feedwater when the boiler low water alarm is ringing, the operator should
Purging the furnace after ignition failure a furnace explosion can be prevented by
