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Class 4 (4th Engineer) MEP 📅 May 2023

Exam Question

(a) Describe how leak in leaky tube in Heat exchanger is detected? How to rectify leaky tube? (8)

(b) Describe how division plate on the inlet and outlet end is detected? (4)

(c) Describe reasons for poor performance of heat exchanger and actions to rectify the same. (4)

Reference Answer

### (a) Leak Detection and Rectification in a Heat Exchanger
#### **Leak Detection Methods**
Leakage in a shell and tube heat exchanger, typically used for cooling Lubricating Oil or Jacket Water with sea water, is detected through systematic procedures. As the system fluid (LO/FW) is maintained at a higher pressure than the sea water coolant, any leak will result in the system fluid leaking into the sea water side.
**Initial Indications:**

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