USCG USCG Steam
Set 5 • Question #351 of 496
Launch Interactive Practice Room A corbel in the furnace of a water-tube boiler is a __________.
A
preformed burner arch section
B
fillet of plastic refractory
✓ Correct Answer
C
formation of soot on furnace floor
D
type of refractory anchor bolt
USCG NMC Regulatory Explanation
In water-tube boiler furnace brickwork, a corbel is a stepped fillet or projection of plastic refractory or firebrick built along wall-to-drum junctions to shield water drum seams and tube joints from direct burner flame impingement.
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