BOILER OPERATOR LICENSING EXAM FULLY SOLVED 2024 #14
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
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
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
Inside tube surface - correct answer in a firetube boiler, soot accumulates on the
1.5 times the mawp - correct answer the pressure applied on the boiler during a
hydrostatic test should be
Decreased - correct answer as fuel oil is heated, its viscosity is
Chimney - correct answer the induced draft fan is located between the boiler & the
, Flash when exposed to an open flame - correct answer the flash point of fuel oil is the
minimum temperature at which the fuel will
Burn continually - correct answer the fire point of fuel oil is the minimum temperature at
which the fuel will
Lowest; flow - correct answer the pour point of fuel oil is the ____ temperature at which
fuel oil will ____
Dangerous to handle - correct answer fuel oil with a low flash point is
Pressure control - correct answer the operating range of a steam boiler is controlled by
a
Condensate in the line - correct answer water hammer in steam lines is caused by
Manometer - correct answer measures the difference in pressure between 2 points,
measures draft
Lowest load - correct answer the best time to blowdown a boiler is when it is at its
Silica gel - correct answer boilers that are laid up dry have trays of ____ put in the
steam & water drums to absorb moisture
Mixture; atomization; temperature; time - correct answer required to obtain complete
combustion of a fuel
Pitting - correct answer oxygen in the boiler causes
Secure the fires & feedwater - correct answer when the boiler low water alarm is ringing,
the operator should
Purging the furnace after ignition failure - correct answer a furnace explosion can be
prevented by
Infrared light - correct answer a lead sulfide cell which is used for flame detection is
sensitive to
Spring loaded - correct answer a pop safety valve is
Secure feedwater going to the boiler - correct answer to test a low water fuel cutoff
using an evaporation test, the boiler operator must
Nfpa - correct answer hazard signal system provides container label information about
hazardous material
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
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
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
Inside tube surface - correct answer in a firetube boiler, soot accumulates on the
1.5 times the mawp - correct answer the pressure applied on the boiler during a
hydrostatic test should be
Decreased - correct answer as fuel oil is heated, its viscosity is
Chimney - correct answer the induced draft fan is located between the boiler & the
, Flash when exposed to an open flame - correct answer the flash point of fuel oil is the
minimum temperature at which the fuel will
Burn continually - correct answer the fire point of fuel oil is the minimum temperature at
which the fuel will
Lowest; flow - correct answer the pour point of fuel oil is the ____ temperature at which
fuel oil will ____
Dangerous to handle - correct answer fuel oil with a low flash point is
Pressure control - correct answer the operating range of a steam boiler is controlled by
a
Condensate in the line - correct answer water hammer in steam lines is caused by
Manometer - correct answer measures the difference in pressure between 2 points,
measures draft
Lowest load - correct answer the best time to blowdown a boiler is when it is at its
Silica gel - correct answer boilers that are laid up dry have trays of ____ put in the
steam & water drums to absorb moisture
Mixture; atomization; temperature; time - correct answer required to obtain complete
combustion of a fuel
Pitting - correct answer oxygen in the boiler causes
Secure the fires & feedwater - correct answer when the boiler low water alarm is ringing,
the operator should
Purging the furnace after ignition failure - correct answer a furnace explosion can be
prevented by
Infrared light - correct answer a lead sulfide cell which is used for flame detection is
sensitive to
Spring loaded - correct answer a pop safety valve is
Secure feedwater going to the boiler - correct answer to test a low water fuel cutoff
using an evaporation test, the boiler operator must
Nfpa - correct answer hazard signal system provides container label information about
hazardous material
