LOW PRESSURE BOILERS SAMPLE
EXAM 3 QUESTIONS AND ANSWERS
Blowdown of a boiler is not required if proper feedwater treatment is used . - ans-False
A low water fuel cutoff shuts off the fuel to the burner when a low water condition exists
. - ans-True
A water column reduces water turbulence to allow a more accurate reading in the gauge
glass . - ans-True
Blowing down a water column and gauge glass too frequently can cause a false water
level . - ans-False
A stop valve on the feedwater line closest to the shell of a boiler allows repair of the
check valve without dumping the boiler . - ans-True
A vacuum pump and condensate tank are designed to discharge air and pump water . -
ans-True
Makeup water is added when boiler water is above the NOWL - ans-False
Most makeup water contains some scale - forming salts . - ans-True
A globe valve should never be used as a main steam stop valve . - ans-True
When open , gate valves offer no restriction to flow . - ans-True
The purpose of a ON / OFF pressure control is to _____.
A. open and close the water column
B. regulate air flow
C. regulate fuel flow
D. start and stop the burner on steam pressure demand - ans-start and stop the burner
on steam pressure demand
, A steam siphon ensures that _____ does not enter the boiler pressure control
A. steam
B. water
C. air
D. gas - ans-Steam
A flame scanner is sensitive to ____.
A. heat
B. temperature
C. pressure
D. infrared rays - ans-infrared rays
In the event of a flame failure , the programmer ____.
A. sends more fuel to start a new firing cycle
B. secures the fuel and purges the furnace
C. vents the firetubes
D. stops the induced draft fan - ans-secures the fuel and purges the furnace
Pressure gauges are calibrated in pounds per ___.
A. square foot
B. cubic inch
C. vertical inch
D. square inch - ans-Square foot
A boiler steam pressure gauge must be connected to the ____.
A. lowest part of the steam side
B. lowest part of the water side
C. highest part of the steam side
D. highest part of the water side - ans-highest part of the steam side
Vacuum gauges are calibrated in inches of ____ atmospheric pressure .
A. mercury below
B. water below
C. mercury above
EXAM 3 QUESTIONS AND ANSWERS
Blowdown of a boiler is not required if proper feedwater treatment is used . - ans-False
A low water fuel cutoff shuts off the fuel to the burner when a low water condition exists
. - ans-True
A water column reduces water turbulence to allow a more accurate reading in the gauge
glass . - ans-True
Blowing down a water column and gauge glass too frequently can cause a false water
level . - ans-False
A stop valve on the feedwater line closest to the shell of a boiler allows repair of the
check valve without dumping the boiler . - ans-True
A vacuum pump and condensate tank are designed to discharge air and pump water . -
ans-True
Makeup water is added when boiler water is above the NOWL - ans-False
Most makeup water contains some scale - forming salts . - ans-True
A globe valve should never be used as a main steam stop valve . - ans-True
When open , gate valves offer no restriction to flow . - ans-True
The purpose of a ON / OFF pressure control is to _____.
A. open and close the water column
B. regulate air flow
C. regulate fuel flow
D. start and stop the burner on steam pressure demand - ans-start and stop the burner
on steam pressure demand
, A steam siphon ensures that _____ does not enter the boiler pressure control
A. steam
B. water
C. air
D. gas - ans-Steam
A flame scanner is sensitive to ____.
A. heat
B. temperature
C. pressure
D. infrared rays - ans-infrared rays
In the event of a flame failure , the programmer ____.
A. sends more fuel to start a new firing cycle
B. secures the fuel and purges the furnace
C. vents the firetubes
D. stops the induced draft fan - ans-secures the fuel and purges the furnace
Pressure gauges are calibrated in pounds per ___.
A. square foot
B. cubic inch
C. vertical inch
D. square inch - ans-Square foot
A boiler steam pressure gauge must be connected to the ____.
A. lowest part of the steam side
B. lowest part of the water side
C. highest part of the steam side
D. highest part of the water side - ans-highest part of the steam side
Vacuum gauges are calibrated in inches of ____ atmospheric pressure .
A. mercury below
B. water below
C. mercury above
