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EspañolPERMISSIBLE EXPOSURE LIMIT
(Redirected from Permissible Exposure Limit)
The 'Permissible Exposure Limit' ('PEL' or 'OSHA PEL') is a legal limit in the United States for exposure of an employee to a substance, usually expressed in parts per million (ppm), or sometimes in milligrams per cubic metre (mg/m3). Permissible Exposure Limits are established by the Occupational Safety and Health Administration (OSHA).
A PEL is usually given as a time-weighted average (TWA), although a few Limits are Ceiling Limits. A TWA is the average exposure over a specified period of time, usually a nominal eight hours. This means that, for limited periods, a worker may be exposed to concentrations higher than the PEL, so long as the average concentration over eight hours remains lower.
A Ceiling Limit is one that may not be exceeded, and is applied to irritants and other materials that have immediate effects.
★ National Institute for Occupational Safety and Health
★ Occupational Safety and Health Administration
★ Recommended Exposure Limit
★ OSHA Permissible Exposure Limits site (includes list of PEL values, and legal references)
The 'Permissible Exposure Limit' ('PEL' or 'OSHA PEL') is a legal limit in the United States for exposure of an employee to a substance, usually expressed in parts per million (ppm), or sometimes in milligrams per cubic metre (mg/m3). Permissible Exposure Limits are established by the Occupational Safety and Health Administration (OSHA).
A PEL is usually given as a time-weighted average (TWA), although a few Limits are Ceiling Limits. A TWA is the average exposure over a specified period of time, usually a nominal eight hours. This means that, for limited periods, a worker may be exposed to concentrations higher than the PEL, so long as the average concentration over eight hours remains lower.
A Ceiling Limit is one that may not be exceeded, and is applied to irritants and other materials that have immediate effects.
| Contents |
| See also |
| External link |
See also
★ National Institute for Occupational Safety and Health
★ Occupational Safety and Health Administration
★ Recommended Exposure Limit
External link
★ OSHA Permissible Exposure Limits site (includes list of PEL values, and legal references)
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