AFF Exit Exam • Set 5 Question 26 of 30
Why is a CO2 type of fire extinguisher preferred for electrical installations?
✓
Direct Answer
Option D: It leaves no residue and does not damage any equipment
CO2 is preferred for electrical installations because it is a non-conductive gas that extinguishes fire by displacing oxygen and cooling, and importantly, it leaves no residue that could damage sensitive electronic components.
All Options
A
It expands into a sticky visual foam barrier
B
It provides extensive long-term cooling
C
It can be safely deployed without isolating power circuits
D
It leaves no residue and does not damage any equipment
(Correct Answer)
Detailed Explanation & Context
CO2 is preferred for electrical installations because it is a non-conductive gas that extinguishes fire by displacing oxygen and cooling, and importantly, it leaves no residue that could damage sensitive electronic components.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Fire Fighting (AFF).
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