Question 228Steam Plants - Assistant Engineer70% to pass
Which of the following problems can occur when an excessive number of water screen tubes are plugged?
AI Explanation
The correct answer is A) Superheater outlet temperature will rise.
When an excessive number of water screen tubes are plugged, it reduces the flow of water through the boiler. This leads to less heat transfer from the furnace gases to the water, causing the superheater outlet temperature to rise. The other options are incorrect because a reduction in water flow would not cause the steam pressure leaving the drum to increase (B), the superheater outlet pressure to rise (C), or the steam temperature in the drum to decrease (D).
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