USCG USCG Steam
Set 9 • Question #495 of 496
Launch Interactive Practice Room Scavenging air is supplied to steam soot blowers to __________.
A
prevent the backup of combustion gases into soot blower heads
✓ Correct Answer
B
provide cooling air when soot blower elements are rotating through blowing arcs
C
prevent the escape of steam into the inner casing
D
prevent warping of the cams when exposed to high temperature steam
USCG NMC Regulatory Explanation
In USCG Steam Plants (Boilers & Turbines), regarding 'Scavenging air is supplied to steam soot blowers to', the verified engineering fact is: 'prevent the backup of combustion gases into soot blower heads'.
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