What type of damage can be expected to be found when the furnace is brought down for maintenance and inspection?

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A steam actuated soot blower has condensate in the first steam exiting the soot blower.

What type of damage can be expected to be found when the furnace is brought down for maintenance and inspection?
A . Thermal fatigue
B . Steam blanketing
C . Creep
D . Stress rupture

Answer: A