Question 437Steam Plants - Assistant Engineer70% to pass
Improper water washing of the water-tube boiler firesides can cause _______________.
AI Explanation
The correct answer is B) sulfuric acid corrosion.
Proper water washing of the water-tube boiler firesides is essential to prevent sulfuric acid corrosion. Improper water washing can leave behind deposits that react with the combustion byproducts to form sulfuric acid, which can then corrode the boiler tubes and drums. This is the main reason why improper water washing can cause sulfuric acid corrosion.
The other options are incorrect because: A) erosion of tubes and drums is more likely caused by mechanical wear, C) decreased heat transfer capabilities is a consequence of the buildup of deposits, not the improper water washing itself, and D) loss of ductility in boiler tubes is not a direct consequence of improper water washing.
Related Questions
#435 If the DC heater relief valve lifts frequently, the cause can be excessive _______________.#436 Which of the following statements represents the advantage of using a small diameter boiler tube over a larger diameter tube? #438 Which procedure should be followed to dry out the fireside of a boiler after water washing? #439 According to the illustration of a typical boiler furnace rear wall, which item number would best represent "standard fire brick"? Illustration SG-0003 #440 Which of the listed refractory materials is capable of providing structural stability?