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Question: 1 / 655

What does the permissible exposure limit define?

The minimum safe exposure to a contaminant

The maximum airborne concentration of a contaminant

The permissible exposure limit (PEL) defines the maximum airborne concentration of a contaminant to which a worker can be exposed over a specific period, usually during an 8-hour workday, without experiencing adverse health effects. This limit is established to protect workers from the potential hazards of exposure to toxic substances in the workplace and is often set by regulatory agencies such as the Occupational Safety and Health Administration (OSHA).

Understanding the PEL is crucial for maintaining workplace safety, as it helps ensure that exposure levels remain within safe limits, thereby reducing the risk of occupational diseases and health issues. The emphasis on "maximum" is key, as it indicates the upper threshold that should not be exceeded, rather than providing a minimum safe exposure or an average over a longer duration.

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The average concentration of a contaminant over one year

The recommended daily exposure to a contaminant

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