3.0 Boiler Safety Devices Knowledge Check Questions and Correct Answers the Latest Update
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Course
Boiler
Institution
Boiler
An automatically fired boiler equipped with a high-low fire control, if the burner
stays on low fire only:
*A* the modulating control may be malfunctioning
*B* the programmer is stuck in the pre-purge phase
*C* the safety lockout required resetting
*D* the igniter is defective
A
On low pr...
3.0 Boiler Safety Devices Knowledge
Check Questions and Correct Answers
the Latest Update
An automatically fired boiler equipped with a high-low fire control, if the burner
stays on low fire only:
*A* the modulating control may be malfunctioning
*B* the programmer is stuck in the pre-purge phase
*C* the safety lockout required resetting
*D* the igniter is defective
✓ A
On low pressure steam boilers, the boiler outlet valves are usually:
*A* gate valves because of their low resistance to flow
*B* gate valves because of the ability to control flow
*C* globe valves because of their low flow resistance
*D* globe valves because of their throttling capability
In order for gas burner systems to operate properly, fuel must be supplied with
correct pressure maintained by the:
*A* high gas pressure cut off valves
*B* pressure relief valve
*C* pressure regulator
*D* high and low gas pressure cut off valves
✓ C
In an automatically fired boiler, the pilot flame is adequate but the main burner
fails to ignite, the programmer should:
*A* Complete the shut down cycle then proceed to another start up
*B* Proceed directly to lockout the boiler
*C* Sound the alarm
*D* Proceed to post purge and lockout while sounding an alarm
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