Chemistry:Short-term exposure limit
A short-term exposure limit (STEL) is the acceptable average exposure over a short period of time, usually 15 minutes as long as the time-weighted average is not exceeded. STEL is a term used in exposure assessment, occupational health, industrial hygiene and toxicology. The STEL may be a legal limit in the United States for exposure of an employee to a chemical substance. The Occupational Safety and Health Administration (U.S. OSHA) has set OSHA-STELs for 1,3-butadiene,[1] benzene[2] and ethylene oxide.[3] For chemicals, STEL assessments are usually done for 15 minutes and expressed in parts per million (ppm), or sometimes in milligrams per cubic meter (mg/m3).[4]
The American Conference of Governmental Industrial Hygienists publishes a more extensive list of STELs as threshold limit values (TLV-STEL).[5]
Similar national exposure limits
- United Kingdom
- Australia
- OES Occupational Exposure Standard[8]
- France
- VLEP 8h00 (Valeur Limite d’Exposition Professionnelle 8h00)
- VLEP CT (Valeur Limite d’Exposition Professionnelle Court Terme)
- Netherlands
- MAC (Maximaal Aanvaarde Concentratie)
- Malaysia
- PEL (Permissible Exposure Limits)
- Poland
- NDSCh (Najwyższe dopuszczalne stężenie chwilowe)
- Russia
- ПДК (предельно допустимая концентрация)
See also
Notes
- ↑ 29CFR1910.1051
- ↑ 29CFR1910.1028
- ↑ 29CFR1910.1047
- ↑ "Coshh Assessment Guide". https://www.seton.co.uk/coshh-assessment. Sunday, March 15, 2020
- ↑ American Conference of Governmental Industrial Hygienists
- ↑ "Workplace exposure limits". http://www.hse.gov.uk/toolbox/harmful/exposure.htm.
- ↑ "EH40/2005 Workplace exposure limits". http://www.hse.gov.uk/pubns/books/eh40.htm.
- ↑ OES Occupational Exposure Standard
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