PELs

Definition

Permissible Exposure Limits (PELs) are standards set by OSHA that define the maximum amount or concentration of a substance that a worker can be exposed to under occupational conditions.

Purpose

PELs are established to protect workers from hazardous substances by limiting their exposure to safe levels, thereby preventing occupational illnesses and injuries.

Examples of Use

• Chemical Plants: Limiting exposure to hazardous chemicals such as benzene or asbestos.
• Construction Sites: Regulating exposure to dust and airborne contaminants.
• Laboratories: Ensuring safe handling of toxic substances like formaldehyde.

Related Terms

• Threshold Limit Value (TLV): Guidelines for occupational exposure limits set by organizations like ACGIH.
• Occupational Exposure Limits (OEL): General term for limits on the amount of a substance in workplace air.
• Time-Weighted Average (TWA): Average exposure over a specified period, typically 8 hours.

Notes

• Compliance: Employers must monitor and ensure that workers' exposure levels do not exceed PELs.
• Safety Measures: Implementing engineering controls, personal protective equipment (PPE), and work practice controls to maintain safe exposure levels.