Question 372Steam Plants - Assistant Engineer70% to pass
In the prevention of moisture carryover from a marine boiler, one important consideration is to _______________.
AI Explanation
The correct answer is C) control the amount of boiler water solids.
Maintaining proper boiler water chemistry, including controlling the amount of dissolved solids, is critical to preventing moisture carryover from a marine boiler. Excessive boiler water solids can lead to foaming and carry-over of water droplets into the steam, which can damage downstream equipment. Properly treating the boiler water to keep dissolved solids within recommended levels is an important step in boiler operation to prevent this issue.
The other answer choices are incorrect because: A) adding foaming agents is not an appropriate solution, as it can exacerbate the carryover issue; B) properly treating with hydrazine is important, but does not directly address the solids control aspect; and D) maintaining a high water level alone does not prevent moisture carryover caused by excessive dissolved solids.
Related Questions
#370 An adequate phosphate reserve should be maintained in boiler water to _______________.#371 Although accurate tests of boiler water for dissolved oxygen are difficult to obtain onboard ship, you can be fairly certain of proper oxygen removal by _______________.#373 Ferrous sulfate tends to go into solution in boiler water when the value of the hydrogen ion concentration increases. Consequently, the water in a 900 psi boiler should be _______________.#374 Which of the listed operating practices is considered as safe, and should be followed when opening and inspecting the waterside of a boiler? #375 Which of the precautions listed should be taken when gagging a boiler safety valve?