Corrosion in boilers can be prevented by _________________?
Correct answer: A. All A., B. and C.
- A. All A., B. and C.
- B. Enhancing pH of feed water by adding alkali
- C. Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen
- D. and prevents corrosion
- E. Deaeration of feed water
Explanation
Boiler corrosion is controlled by removing dissolved oxygen through deaeration, maintaining suitable alkalinity, and adding oxygen scavengers such as sodium sulphite or hydrazine. Therefore all three listed measures are applicable.
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