USCG USCG Steam
Set 12 • Question #117 of 496
Launch Interactive Practice Room In addition to the repeated use of surface blow to control boiler water chemistry, caustic soda may be used to treat high salinity, as well as __________.
A
calcium chromate, for oxygen control
B
phosphate, to aid in scale prevention
✓ Correct Answer
C
calcium carbonate, to assist in precipitating solids
D
calcium sulfate to reduce priming
USCG NMC Regulatory Explanation
In USCG Steam Plants (Boilers & Turbines), regarding 'In addition to the repeated use of surface blow to control boiler water chemistry, caustic soda may be used to treat high salinity, as well as', the verified engineering fact is: 'phosphate, to aid in scale prevention'.
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