RAFF Exit Exam • Set 4 Question 3 of 30

Inert gas system shall be capable of maintaining oxygen level in cargo tanks to below

✓

Direct Answer

Option C: 8% by volume

SOLAS Chapter II-2 and the FSS Code regulate Inert Gas Systems to ensure the oxygen concentration inside cargo oil tanks is maintained at or below 8% by volume. This prevents the atmosphere from entering the flammable range during all operational phases.

All Options

A

5% by volume

B

7% by volume

C

8% by volume (Correct Answer)

D

10% by volume

Detailed Explanation & Context

SOLAS Chapter II-2 and the FSS Code regulate Inert Gas Systems to ensure the oxygen concentration inside cargo oil tanks is maintained at or below 8% by volume. This prevents the atmosphere from entering the flammable range during all operational phases.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Refresher Advanced Fire Fighting (RAFF).

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