Mark three forms of airborne contaminants:

• Dusts

• Gases

• Odors

• Fumes

• Grease

Why are gases a dangerous airborne contaminant?

• Gas can pass quickly from the lungs into the bloodstream

• They smell bad

• You can see them in the air

• You can always taste them in your bloodstream

What are the two types of atmospheres for which respirators must be used?

• Toxic atmospheres where the worker's exposures might exceed the PEL

• Non-toxic atmospheres

• Atmospheres where the concentration of oxygen is 21.5%

• Oxygen-deficient atmospheres where the concentration of oxygen is less than 19.5%

Inhalation is the most common route of exposure.

• True

• False

There are _____ physical warning signs of exposure.

• 10

• 5

• 9

• 6

Mark three physical warning signs of exposure.

• Orange-colored skin

• Breathing difficulties

• Dizziness or drowsiness

• Odors or strange taste in mouth

What are the three commonly used exposure guides?

• Permissible Exposure Limits (PELS) enforced by OSHA

• Threshold Limit Values (TLVs) established by ACGIH

• California Department of Public Health (CDPH)

• Recommended Exposure Limits (REL), established by NIOSH

What are three physical warning signs of exposure?

• Burning pain in your feet

• Burning sensation in eyes or on the skin

• Weakness, fatigue or lack of energy

• Chills, upset stomach

What are two forms of airborne contaminants?

• Mists

• Vapors

• Scents

• Winds