Arkansas Boiler Operator Study
Guide (424) questions with
answers
SAFETY VALVE - CORRECT ANSWERS ✔✔Prevents boiler
pressure from rising above the setting of the valve by
relieving excessive steam pressure, guarding against
hazards of over pressure.
STEAM SUPPLY STOP VALVE - CORRECT ANSWERS ✔✔The
valve installed at the steam outlet of the boiler to shut off
the flow of steam
STEAM PRESSURE GAUGE - CORRECT ANSWERS
✔✔Indicates the steam pressure in the boiler in pounds
per square inch
STEAM GAUGE SYPHON - CORRECT ANSWERS ✔✔The
device installed between the steam gauge and the
boiler to provide a water seal, so that live steam will not
enter the gauge to cause a false reading or damage to
the gauge - CORRECT ANSWERS ✔✔
,INSPECTOR'S TEST GAUGE CONNECTION AND COCK -
CORRECT ANSWERS ✔✔Provides the necessary
connection to check the accuracy of the steam pressure
gauge on the boiler.
WATER COLUMN - CORRECT ANSWERS ✔✔The hollow
casting or forging connected at the top to the boiler's
steam space and at bottom to the water space. The water
gauge glass and water test cocks are installed on the
column.
WATER GLASS AND GAUGE FIXTURES - CORRECT
ANSWERS ✔✔To visibly show the water level in the boiler
WATER TEST GAUGES OR TRY COCKS - CORRECT
ANSWERS ✔✔For testing the water level in the boiler
should the water glass be out of service temporarily for
any reason.
DRAIN VALVE UNDER THE WATER COLUMN AND SWITCH -
CORRECT ANSWERS ✔✔To provide a means for daily
flushing under the water column and water level controls
to keep the chamber
,and lines clean, so the water will register accurately in
the glass. Also provides a means of testing the low water
cutoff - CORRECT ANSWERS ✔✔
BLOWOFF VALVE - CORRECT ANSWERS ✔✔To provide a
method of draining, flushing and blowing off the boiler at
the low point to remove the concentrated solids,
sediment, seals and sludge of keeping the boiler clean
WATER FEED INLET STOP VALVE - CORRECT ANSWERS
✔✔The shutoff valve required next to the boiler on
the water feed inlet, so that the entire line can be
manually shut off if it is necessary to work on the pump
or check valve. It should never be closed when the pump
is to operate. - CORRECT ANSWERS ✔✔
WATER FEED INLET CHECK VALVE - CORRECT ANSWERS
✔✔The check valve on the water feed inlet that closes to
prevent steam or water from the boiler backing up into
the water feed line
LOW WATER CUTOFF - CORRECT ANSWERS ✔✔The control
required on all boilers to shut off the main fuel
, burner when the water reaches the lowest, safe,
permissible level. - CORRECT ANSWERS ✔✔
STEAM PRESSURE OPERATING CONTROL - CORRECT
ANSWERS ✔✔To maintain the desired steam operating
pressure on the boiler by regulating the burner to the
steam pressure
setting - CORRECT ANSWERS ✔✔
HI-LIMIT PRESSURE CONTROL - CORRECT ANSWERS ✔✔Is
in addition to the operating control to shut off the main
fuel burner supply when the pressure in the boiler
exceeds the desired maximum setting
100% FLAME SAFEGUARD - CORRECT ANSWERS ✔✔The
pilot safety device to shut off the main fuel
burner valve and the pilot burner in the event of a pilot
failure and to prevent the main burner from turning on
until a safe pilot is established - CORRECT ANSWERS ✔✔
Which valve is between the boiler and the return pump? -
CORRECT ANSWERS ✔✔Check Valve
Guide (424) questions with
answers
SAFETY VALVE - CORRECT ANSWERS ✔✔Prevents boiler
pressure from rising above the setting of the valve by
relieving excessive steam pressure, guarding against
hazards of over pressure.
STEAM SUPPLY STOP VALVE - CORRECT ANSWERS ✔✔The
valve installed at the steam outlet of the boiler to shut off
the flow of steam
STEAM PRESSURE GAUGE - CORRECT ANSWERS
✔✔Indicates the steam pressure in the boiler in pounds
per square inch
STEAM GAUGE SYPHON - CORRECT ANSWERS ✔✔The
device installed between the steam gauge and the
boiler to provide a water seal, so that live steam will not
enter the gauge to cause a false reading or damage to
the gauge - CORRECT ANSWERS ✔✔
,INSPECTOR'S TEST GAUGE CONNECTION AND COCK -
CORRECT ANSWERS ✔✔Provides the necessary
connection to check the accuracy of the steam pressure
gauge on the boiler.
WATER COLUMN - CORRECT ANSWERS ✔✔The hollow
casting or forging connected at the top to the boiler's
steam space and at bottom to the water space. The water
gauge glass and water test cocks are installed on the
column.
WATER GLASS AND GAUGE FIXTURES - CORRECT
ANSWERS ✔✔To visibly show the water level in the boiler
WATER TEST GAUGES OR TRY COCKS - CORRECT
ANSWERS ✔✔For testing the water level in the boiler
should the water glass be out of service temporarily for
any reason.
DRAIN VALVE UNDER THE WATER COLUMN AND SWITCH -
CORRECT ANSWERS ✔✔To provide a means for daily
flushing under the water column and water level controls
to keep the chamber
,and lines clean, so the water will register accurately in
the glass. Also provides a means of testing the low water
cutoff - CORRECT ANSWERS ✔✔
BLOWOFF VALVE - CORRECT ANSWERS ✔✔To provide a
method of draining, flushing and blowing off the boiler at
the low point to remove the concentrated solids,
sediment, seals and sludge of keeping the boiler clean
WATER FEED INLET STOP VALVE - CORRECT ANSWERS
✔✔The shutoff valve required next to the boiler on
the water feed inlet, so that the entire line can be
manually shut off if it is necessary to work on the pump
or check valve. It should never be closed when the pump
is to operate. - CORRECT ANSWERS ✔✔
WATER FEED INLET CHECK VALVE - CORRECT ANSWERS
✔✔The check valve on the water feed inlet that closes to
prevent steam or water from the boiler backing up into
the water feed line
LOW WATER CUTOFF - CORRECT ANSWERS ✔✔The control
required on all boilers to shut off the main fuel
, burner when the water reaches the lowest, safe,
permissible level. - CORRECT ANSWERS ✔✔
STEAM PRESSURE OPERATING CONTROL - CORRECT
ANSWERS ✔✔To maintain the desired steam operating
pressure on the boiler by regulating the burner to the
steam pressure
setting - CORRECT ANSWERS ✔✔
HI-LIMIT PRESSURE CONTROL - CORRECT ANSWERS ✔✔Is
in addition to the operating control to shut off the main
fuel burner supply when the pressure in the boiler
exceeds the desired maximum setting
100% FLAME SAFEGUARD - CORRECT ANSWERS ✔✔The
pilot safety device to shut off the main fuel
burner valve and the pilot burner in the event of a pilot
failure and to prevent the main burner from turning on
until a safe pilot is established - CORRECT ANSWERS ✔✔
Which valve is between the boiler and the return pump? -
CORRECT ANSWERS ✔✔Check Valve
