What could abnormal pressure changes indicate?
A. Fouling
B. Tube plugging
C. Internal tube leaks
D. Wear through the tube walls
A. Incorrect. Abnormal pressure changes could indicate tube plugging.
B. Correct. Abnormal pressure changes could indicate tube plugging.
C. Incorrect. Abnormal pressure changes could indicate tube plugging.
D. Incorrect. Abnormal pressure changes could indicate tube plugging.
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