Which type of fire is the foam (stored-pressu...

Question 1 of 2707066636eec28f7522a1c51cfd6

Which type of fire is the foam (stored-pressure type) fire extinguisher effective on?

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Question 1 of 27070

Q

Which type of fire is the foam (stored-pressure type) fire extinguisher effective on?

🔍 Key Concepts

• Foam extinguishers and how they work (blanketing and smothering effect) • Differences between Class A, B, C fires (ordinary combustibles, flammable liquids, energized electrical) • Why water-based or conductive agents are dangerous on certain fire classes

💭 Think About

• Think about which fire classes involve flammable liquids and how a foam blanket affects vapors. • Consider whether a foam (stored-pressure) extinguisher contains water-based solution and if that should be used on energized electrical equipment. • Ask yourself: On which class of fire would using a liquid/foam agent risk spreading the fire or causing electrical shock?

✅ Before You Answer

• Verify which fire class involves energized electrical equipment (Class C) and what types of extinguishing agents are recommended or NOT recommended for it. • Confirm that foam agents are especially designed to smother flammable liquid surfaces by forming a blanket over the fuel. • Double-check whether foam extinguishers are rated for ordinary combustibles (Class A) as well as flammable liquids (Class B), or only one of those.