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Class 4 (4th Engineer) SSEP 📅 Sep 2023

Exam Question

What is Inert Gas and what is its function. What are the ways it is produced on ship. Waht is the normal O2 content in the IG produced from boiler flue gas. What is pyrophoric reaction and how is it controlled by using inert gas. (20)

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Reference Answer

### 1. Inert Gas: Definition and Function
**Definition:**
Inert Gas (IG) is a gas or a mixture of gases containing insufficient oxygen to support the combustion of hydrocarbons. Onboard ships, it is typically a mixture of Nitrogen (N₂), Carbon Dioxide (CO₂), with trace amounts of other gases, and a very low oxygen (O₂) content.
**Function:**

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