Boiler Operator Licensing Exam Test with Answers Rated A
all steam boilers must have 1 or more safety valves
before anyone enters the boiler drum, the main steam
stop valve, bottom blowdown valves, & feedwater valves Locked closed
should be
at atmospheric pressure, water begins to boil at approxi-
212 degrees F
mately
fuels most commonly used in boilers Fuel oil, gas, & coal
must be connected to the highest part of the steam side
Steam pressure gauge
of the boiler
with an NOWL in a boiler, the gauge glass is approximately Half full
a high surface tension on top of the boiler water can lead
Foaming
to
Bottom blowdown on a boiler removes sludge & sediment
Mud drum
from the
a boiler fusible plug is brass or bronze with a core of Tin
a steam pressure gauge is calibrated in Pounds per square inch
a secondary means of determining boiler water level Try cocks
fires caused by spontaneous combustion are most likely
Oily waste rag storage
to occur in the
a siphon installed between the boiler & the pressure
Steam
gauge protects the Bourdon tube from
boiler feedwater is chemically treated to Prevent formation of scale
in a firetube boiler, soot accumulates on the Inside tube surface
the pressure applied on the boiler during a hydrostatic
1.5 times the MAWP
test should be
as fuel oil is heated, its viscosity is Decreased
1/9
, Boiler Operator Licensing Exam Test with Answers Rated A
the induced draft fan is located between the boiler & the Chimney
the flash point of fuel oil is the minimum temperature at
Flash when exposed to an open flame
which the fuel will
the fire point of fuel oil is the minimum temperature at
Burn continually
which the fuel will
the pour point of fuel oil is the temperature at which
Lowest; flow
fuel oil will
fuel oil with a low flash point is Dangerous to handle
the operating range of a steam boiler is controlled by a Pressure control
water hammer in steam lines is caused by Condensate in the line
measures the ditterence in pressure between 2 points,
Manometer
measures draft
the best time to blowdown a boiler is when it is at its Lowest load
Boilers that are laid up dry have trays of put in the
Silica gel
steam & water drums to absorb moisture
required to obtain complete combustion of a fuel Mixture; atomization; temperature; time
oxygen in the boiler causes Pitting
when the boiler low water alarm is ringing, the operator
Secure the fires & feedwater
should
a furnace explosion can be prevented by Purging the furnace after ignition failure
a lead sulfide cell which is used for flame detection is
Infrared light
sensitive to
a pop safety valve is Spring loaded
to test a low water fuel cutott using an evaporation test,
Secure feedwater going to the boiler
the boiler operator must
NFPA
2/9
all steam boilers must have 1 or more safety valves
before anyone enters the boiler drum, the main steam
stop valve, bottom blowdown valves, & feedwater valves Locked closed
should be
at atmospheric pressure, water begins to boil at approxi-
212 degrees F
mately
fuels most commonly used in boilers Fuel oil, gas, & coal
must be connected to the highest part of the steam side
Steam pressure gauge
of the boiler
with an NOWL in a boiler, the gauge glass is approximately Half full
a high surface tension on top of the boiler water can lead
Foaming
to
Bottom blowdown on a boiler removes sludge & sediment
Mud drum
from the
a boiler fusible plug is brass or bronze with a core of Tin
a steam pressure gauge is calibrated in Pounds per square inch
a secondary means of determining boiler water level Try cocks
fires caused by spontaneous combustion are most likely
Oily waste rag storage
to occur in the
a siphon installed between the boiler & the pressure
Steam
gauge protects the Bourdon tube from
boiler feedwater is chemically treated to Prevent formation of scale
in a firetube boiler, soot accumulates on the Inside tube surface
the pressure applied on the boiler during a hydrostatic
1.5 times the MAWP
test should be
as fuel oil is heated, its viscosity is Decreased
1/9
, Boiler Operator Licensing Exam Test with Answers Rated A
the induced draft fan is located between the boiler & the Chimney
the flash point of fuel oil is the minimum temperature at
Flash when exposed to an open flame
which the fuel will
the fire point of fuel oil is the minimum temperature at
Burn continually
which the fuel will
the pour point of fuel oil is the temperature at which
Lowest; flow
fuel oil will
fuel oil with a low flash point is Dangerous to handle
the operating range of a steam boiler is controlled by a Pressure control
water hammer in steam lines is caused by Condensate in the line
measures the ditterence in pressure between 2 points,
Manometer
measures draft
the best time to blowdown a boiler is when it is at its Lowest load
Boilers that are laid up dry have trays of put in the
Silica gel
steam & water drums to absorb moisture
required to obtain complete combustion of a fuel Mixture; atomization; temperature; time
oxygen in the boiler causes Pitting
when the boiler low water alarm is ringing, the operator
Secure the fires & feedwater
should
a furnace explosion can be prevented by Purging the furnace after ignition failure
a lead sulfide cell which is used for flame detection is
Infrared light
sensitive to
a pop safety valve is Spring loaded
to test a low water fuel cutott using an evaporation test,
Secure feedwater going to the boiler
the boiler operator must
NFPA
2/9
