Question 71Steam Plants - 1st Asst/Chief70% to pass
A malfunction in the DC heater is indicated by _______________.
AI Explanation
The correct answer is C) the boiler requiring excessive amounts of oxygen scavenging chemicals.
A malfunction in the DC (direct contact) heater would be indicated by the boiler requiring excessive amounts of oxygen scavenging chemicals. This is because a DC heater malfunction can lead to air entering the system, which would increase the amount of oxygen present and require more chemicals to scavenge that oxygen.
The other answer choices are incorrect because they do not directly indicate a DC heater malfunction. Condensate contacting steam (A), air flowing from the vent condenser (B), and water and steam entering at different temperatures (D) could be symptoms of other issues, but do not specifically point to a DC heater problem.
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