Worksheets3.4 Low Water Fuel Cutoffs
Total questions: 10
Worksheet time: 5mins
A low water fuel cutoff is located slightly below the NOWL.
True
False
The primary function of a low water fuel cutoff is to....
remove sludge and sediment from the bottom of the boiler.
shut down the burner if the water level drops below the safe operating level
stop the flow of city water supplied to a condensate return tank
An evaporation test is performed by opening a low water fuel cutoff blowdown valve by hand.
True
False
A boiler operator must be present during an evaporation test and continually monitor the boiler's water level.
True
False
What shuts the burner OFF in the event of a low water condition?
low water alarm
feedwater regulator
low water fuel cutoff
automatic low water feeder
A low water fuel cutoff should be tested ______depending on plant procedures and requirements.
daily
monthly
semiannually
annually
The low-water fuel cutoff can be tested by blowing down the low-water fuel cutoff or by ___.
securing the feedwater and allowing the water level in the boiler to drop
closing the blowdown valves
modulating the firing rate
a hydrostatic test
A low-water fuel cutoff ___.
shuts off the water supply
shuts off the fuel supply
shuts off the condensate return
shuts off the supply air
Which of the following is the proper method for testing a low water cut off device on a steam heating boiler?
Lower the water level in the boiler until the alarm rings
Lower the water level in the boiler until the burner shuts down
Shut off the fuel to the boiler
Test the water column with the test gauge
An auxiliary low water fuel cutoff is installed...
slightly above the NOWL.
slightly below the primary low water fuel cutoff.
at the highest point on the boiler.
on a feedwater line close to the boiler shell.
