Class 4 (4th Engineer) MEP 📅 Nov 2022

Exam Question

With reference to Main Engine Turbo chargers:

(a) What are the indications of water leakage in a turbo charger casing and consequences of this leakage, if unnoticed? (8)

(b) Precaution to be taken during water washing at sea of blower side and dry washing of turbine side (8)

Reference Answer

### (a) Indications and Consequences of Water Leakage in a Turbocharger Casing (8 Marks)
#### **Indications of Water Leakage**
A water leak in a turbocharger casing, which is typically cooled by the LT (Low Temperature) Central Cooling Water system, can manifest through several direct and indirect indications:
1. **Engine Room Alarms:** The primary system-level indication, as noted in the reference, is the **"Main Engine Cooling Water Header Tank Low Level alarm."** This signifies a loss of cooling water inventory from the system, and the turbocharger casing is a potential point of leakage.

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