🔍 Key Concepts

• Fire extinguisher classes (A, B, C) and which type is used for flammable liquids like paint and solvents • Where the CFR places extinguishers for paint lockers / flammable liquid lockers (outside at the exit, not inside the locker) • Difference between extinguisher “type” (A/B/C)” and “size” (I/II)

💭 Think About

• Ask yourself: Is paint and thinner more like wood/paper trash, flammable liquids, or energized electrical equipment? That will tell you whether you need an A, B, or C type extinguisher. • Think about why the extinguisher is placed outside the paint locker exit instead of inside. What hazard is that trying to protect against? • Compare the answer choices: once you know the correct class (A, B, or C), then decide which size (I vs II) is typically required for a high‑hazard space like a paint locker.

✅ Before You Answer

• Be sure you match the extinguisher class to the fuel: paint, solvents, and thinners are flammable liquids. • Confirm that “I” and “II” refer to size/capacity, not different fire classes. • Verify in the regulations that paint lockers require an extinguisher of the correct class for flammable liquids and of sufficient capacity for that hazard.