Class 4 (4th Engineer) MEKG 📅 Feb 2024

Exam Question

Write short notes on the following pertaining to the use of copper alloys in seawater systems.

(a) Use of copper nickel and formation of protective film for use in seawater. (4)

(b) Cavitation (4)

(d) Marine Biofouling (4)

Reference Answer

### (a) Use of Copper Nickel and Formation of Protective Film for Use in Seawater
**1. Application and Properties:**
Copper-nickel alloys (often referred to as Cu-Ni) are specifically engineered for marine applications due to their excellent resistance to seawater corrosion. They are commonly used in:
- Seawater piping systems (e.g., central cooling, fire mains).

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