Exam Question
With reference to Main Engine Turbo charger
(a) What are the indication of water leakage in turbo charger casing. (8)
(b) Precaution to be taken during water washing at sea (8)
Class 4 (4th Engineer)
MEP
📅 Jan 2023
Reference Answer
### (a) Indications of Water Leakage in Turbocharger Casing
Water leakage into the turbocharger, typically from a cracked casing or a failed seal in the water-cooled sections, presents several direct and indirect indications. Prompt identification is critical to prevent catastrophic failure and engine damage.
#### Primary / Direct Indications:
1. **LT Central Cooling Water Header Tank Level Drop:** A continuous and unexplained drop in the Low Temperature (LT) central cooling water header tank level is the most common initial sign. This may trigger the low-level alarm, necessitating frequent manual top-ups.
Water leakage into the turbocharger, typically from a cracked casing or a failed seal in the water-cooled sections, presents several direct and indirect indications. Prompt identification is critical to prevent catastrophic failure and engine damage.
#### Primary / Direct Indications:
1. **LT Central Cooling Water Header Tank Level Drop:** A continuous and unexplained drop in the Low Temperature (LT) central cooling water header tank level is the most common initial sign. This may trigger the low-level alarm, necessitating frequent manual top-ups.
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