Class 4 (4th Engineer) MEKM 📅 Feb 2023

Exam Question

(a) Explain fuel oil treatment process on board, before it is fit for use in main and auxiliary engines (8)

(b) What is the sign of incompatible fuel oil? What action is taken when incompatibility or not? (4)

Reference Answer

### (a) Fuel Oil Treatment Process On Board (8 Marks)
The complete fuel oil treatment process is a multi-stage system designed to remove contaminants such as water, solid particles (sand, rust, cat-fines), and sludge-forming compounds from the fuel before it is injected into the main or auxiliary engines. This ensures engine reliability, reduces wear on components, and complies with environmental regulations.
The process can be broken down into the following stages:
**1. Bunkering and Storage:**

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