Question 104Steam Plants - Assistant Engineer70% to pass
The correct method of expanding a generating tube at the boiler drum tube sheet is to roll _______________.
AI Explanation
The correct answer is A) to a depth greater than the thickness of the drum tube sheet.
The correct method of expanding a generating tube at the boiler drum tube sheet is to roll the tube to a depth greater than the thickness of the drum tube sheet. This ensures a tight, secure fit between the tube and the tube sheet, preventing leaks and improving the overall integrity of the boiler system. Rolling the tube to a depth less than the thickness of the drum tube sheet (option C) would not provide a sufficient seal, while rolling it heavily or slightly at the tube end prior to welding (options D and B) are not the recommended techniques.
Related Questions
#102 The gland exhaust fan draws steam and non-condensable vapors from the gland exhaust condenser and discharges to the _______________.#103 Which of the following repairs should be made to a badly warped boiler tube? #105 A hole should be made in the sagged tube occurring in a water-tube boiler, prior to plugging the tube to prevent a _______________.#106 If the engineer on watch has reason to doubt the accuracy of the water level showing in the boiler gage glass, he should FIRST _______________.#107 An obstruction in the top connection of a boiler gage glass will cause the _______________.