What is a condition in which the flames from a burner touch the tubes in the furnace?
A) Hot spots
B) Breech
C) Flame impingement
D) Furnace purge
Answer: C
Explanation: A) Incorrect. Hot spots areas within a radiant section furnace tube, or areas within a furnace firebox, that have been overheated due to flame impingement or some other cause.
B) Incorrect. Breech is the area below the stack where flue gases are collected past the last convection tubes.
C) Correct. Flame impingement is a condition in which the flames from a burner touch the tubes in the furnace.
D) Incorrect. Furnace purge is a method of using steam or air to remove combustibles from a furnace firebox prior to lighting the burner and startup.
You might also like to view...
____________________ is much easier to use than the anaerobic adhesive method and usually comes in a kit with other materials.
Fill in the blank(s) with the appropriate word(s).
The garter spring should always face toward the flow of lubricant when a lip seal is installed.
Answer the following statement true (T) or false (F)
What is the height in inches of 21 courses of engineered size brick if each course is laid to a height of 3 1/4 "?
What will be an ideal response?
The __________ braking method uses a resistor to absorb kinetic energy from the rotating armature and load to stop the motor.
A. dynamic B. regenerative