In advanced firefighting, what is the purpose of using a Class A foam?
Direct Answer
Option B: To control oil and fuel fires
Class B foam is specifically designed for flammable liquid fires (oil, fuel, grease), forming a blanket that separates the fuel from oxygen and cools the surface. This creates a vapor seal to prevent reignition. Class A foam is generally for ordinary combustibles like wood or paper.
All Options
Detailed Explanation & Context
Class B foam is specifically designed for flammable liquid fires (oil, fuel, grease), forming a blanket that separates the fuel from oxygen and cools the surface. This creates a vapor seal to prevent reignition. Class A foam is generally for ordinary combustibles like wood or paper.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Fire Fighting (AFF).
Practice Full AFF Set 1
Test yourself with 30 interactive questions, live timer, and instant score.