A heavy equipment operator discovers a drum labelled 'Methyl ethyl ketone' (MEK), UN1193, on site. This substance is a Class 3 Flammable Liquid. What is a primary hazard associated with Class 3 Flammable Liquids that an operator should be highly aware of?

Question: A heavy equipment operator discovers a drum labelled 'Methyl ethyl ketone' (MEK), UN1193, on site. This substance is a Class 3 Flammable Liquid. What is a primary hazard associated with Class 3 Flammable Liquids that an operator should be highly aware of?

Answer options: ✅ They can easily ignite from a spark, open flame, or heat source.

• They are acutely toxic and can cause instant death upon skin contact.
• They are highly corrosive to human tissue and most metals.
• They react violently with water, producing toxic gases.

Correct answer: They can easily ignite from a spark, open flame, or heat source.

Explanation: Class 3 Flammable Liquids, like Methyl ethyl ketone, are characterized by their low flash point, meaning they can ignite readily from common ignition sources such as sparks, open flames, or even static electricity, posing a significant fire risk.