WorksheetsBoiler Exam Review 3
Total questions: 10
Worksheet time: 5mins
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
Which of the following is not a classification of a hot water system?
a two pipe reverse return system
a hartford loop system
a one pipe system
a two pipe direct return system
Safety valves are designed to operate in what fashion(way)?
open to break the cycle to prevent a flame-out
open slowly to prevent water hammer and burning
to pop open
to be opened only by hand when off-line
What chemical would be used to control alkalinity in a boiler?
caustic soda
sodium sulfate
phosphate
sodium sulfite
Which of the following types of similarly sized valves requires the most manual valve stem rotation to move from fully open to fully closed? (Assume each valve has a non-rising stem)
butterfly
ball
plug
gate
In order to reduce the viscosity of fuel oil, it is necessary to ____.
decrease its temperature
decrease its pour point
increase its temperature
decrease its pressure
What is the maximum temperature allowed on all low pressure heating boilers?
200 degrees F
250 degrees F
212 degrees F
175 degrees F
What ASME code are heating boilers built to?
ASME Code, Section V
ASME Code, Section VI
ASME Code, Section IV
ASME Code, Section II
The ASME Code states that the setting on the high limit pressure control on a low pressure steam boiler shall not exceed:
12 psig
10 psig
15 psig
18 psig
Boiler water pH requirements vary, but the pH value of boiler water typically should be maintained between ___ to prevent scale formation.
5 and 7.5
8 ad 10.5
10 and 11.5
12 and 14.5
