AFF Exit Exam • Set 2 Question 26 of 30

What is the purpose of a flame arrestor fitted on a fuel tank vent pipe?

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Direct Answer

Option B: Prevent external flames from traveling into the fuel vapor space

Flame arrestors are safety devices fitted to fuel tank vents to prevent the propagation of external flames into the vapor space of the tank. By quenching the flame front through a fine mesh or element, they prevent internal explosions, which is a critical safety requirement for all flammable liquid storage.

All Options

A

Regulate fuel pumping speed

B

Prevent external flames from traveling into the fuel vapor space (Correct Answer)

C

Stop fuel overflow

D

Filter air dust

Detailed Explanation & Context

Flame arrestors are safety devices fitted to fuel tank vents to prevent the propagation of external flames into the vapor space of the tank. By quenching the flame front through a fine mesh or element, they prevent internal explosions, which is a critical safety requirement for all flammable liquid storage.

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

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