Module 9: Hazardous Materials (Flammable and Combustible Liquids

Which of the following is a characteristic of flammable liquids?

• Flash point at or above 100°F

• Flash point below 100°F

• Non-volatile nature

• Inability to vaporize

The primary hazard associated with spray finishing operations is:

• Fire and explosion

• Electrical shock

Compressed gas cylinders should always be:

• Stored horizontally

• Secured in an upright position

• Kept near heat sources

• Handled without protective equipment

Which of the following is NOT a recommended practice when handling flammable liquids?

• Using approved, sealed containers

• Storing in well-ventilated areas

• Transferring liquids near open flames

• Grounding and bonding during transfer

Dipping and coating operations involving hazardous materials require:

• No special ventilation

• Proper ventilation to remove vapors

• Use of water-based solutions only

• Operations in confined spaces

The Lower Explosive Limit (LEL) of a vapor refers to:

• The minimum concentration needed to support combustion

• The maximum concentration above which combustion cannot occur

• The temperature at which a liquid ignites

• The pressure at which a gas becomes liquid

Which class of fire extinguisher is suitable for flammable liquid fires?

• Class A

• Class B

• Class C

• Class D

Before performing maintenance on equipment used in dipping operations, it is essential to:

• Leave the equipment energized

• Drain and clean the equipment thoroughly

• Ignore manufacturer's instructions

• Use any available cleaning agent

The flash point of a liquid is defined as:

• The temperature at which it boils

• The temperature at which it emits enough vapor to ignite

• The temperature at which it freezes

• The temperature at which it decomposes

When transporting compressed gas cylinders, one should:

• Roll them on their sides

• Use a suitable hand truck or cart

• Drag them by the valve

• Carry them by hand