Coast Guard Regulations (46 CFR) divide...

🔍 Key Concepts

• Review the 46 CFR definition of flammable liquid versus combustible liquid (look for the specific flash point temperature that separates them). • Understand the difference between flash point (temperature at which vapors ignite if given a spark) and autoignition temperature (temperature at which a substance ignites by itself without a spark). • Know what Reid vapor pressure measures and whether it alone defines a liquid as flammable in Coast Guard regulations.

💭 Think About

• Which choice actually talks about flash point, and which are talking about different properties like vapor pressure or self‑ignition? • Ask yourself: does the Coast Guard definition of flammable liquid use a specific flash point temperature cutoff, and if so, is it a maximum (at or below) or a minimum (at or above)? • Which option mistakenly describes a property (like always having a certain Reid vapor pressure or self‑igniting) that is not how 46 CFR classifies flammable vs combustible liquids?

✅ Before You Answer

• Look up in 46 CFR the exact flash point temperature that separates flammable from combustible liquids and whether it is "at or below" that temperature. • Verify whether Reid vapor pressure is a supporting characteristic or the only criterion in the definition of a flammable liquid. • Confirm that autoignition temperature is a different concept from flash point and is not used in the basic Coast Guard definition of a flammable liquid.

Coast Guard Regulations (46 CFR) divide petroleum products into combustible liquids and flammable liquids. Flammable liquids __________.

give off flammable vapors at or below 80°F (26.7°C)

always have a Reid vapor pressure of 14 pounds (6.35 kg) or more

will self-ignite at temperatures below 150°F (65.6°C)

have a flash point of 150°F (65.6°C) or more

🔍 Key Concepts

💭 Think About

✅ Before You Answer