What condition must be met for transferring Class II or III liquids above a certain temperature?

For transferring Class II or III liquids above a certain temperature, the requirement that they must be dispensed using safety cans is crucial to ensuring safety and compliance with regulations. Safety cans are specifically designed to contain flammable liquids, minimizing the risk of ignition due to spills or accidents. They are constructed to prevent static charge build-up, which can occur when these liquids are being transferred, and they typically feature a flame arrestor to prevent flames from entering the can.

Using safety cans is essential when handling these liquids at elevated temperatures because the risk of vaporization increases, which can lead to the formation of flammable vapors. These vapors can ignite if they come into contact with an open flame or spark, posing a significant fire hazard. Therefore, using safety cans helps mitigate these risks, ensuring safe handling practices in environments where flammable liquids are present.