Question 42Motor Plants - QMED
70% to passCasing drains may be required on a waste heat boiler gas passage to _______________.
Aprevent an accumulation of boiler water entering gas passages as a result of a pinhole tube leak
Bprovide a means to sample stack gases for testing purposes
Crelease excess pressure
Ddrain off condensation
AI Explanation
The correct answer is D) drain off condensation. Casing drains on a waste heat boiler gas passage are used to drain off any condensation that may accumulate in the gas passages. This is necessary to prevent the buildup of water, which could potentially lead to corrosion or other issues within the boiler system. The other answer choices are incorrect because: A) is not the primary purpose of casing drains, B) is related to sampling stack gases, not draining condensation, and C) is about releasing excess pressure, which is not the main function of casing drains on a waste heat boiler.
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