permissible exposure limit

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• 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 chemical substance or physical agent. For chemicals, the chemical regulation is usually expressed in parts per million (ppm),… …   Wikipedia

• Recommended Exposure Limit — A Recommended Exposure Limit (REL) is an occupational exposure limit that has been recommended by the U.S. National Institute for Occupational Safety and Health to OSHA for adoption as a Permissible Exposure Limit. The REL is a level that NIOSH… …   Wikipedia

• limit — A boundary or end. [L. limes, boundary] critical l. the upper or lower boundary of a laboratory test result that indicates a life threatening value. elastic l. the greatest stress to which a material may be subjected and still be capable of… …   Medical dictionary

• Threshold limit value — The threshold limit value (TLV) of a chemical substance is a level to which it is believed a worker can be exposed day after day for a working lifetime without adverse health effects. Strictly speaking, TLV is a reserved term of the American… …   Wikipedia

• Threshold Limit Value — Time Weighted Average (TLV TWA, Valor Límite Umbral Media Ponderada en el Tiempo o Telematicamente Limites Umbral). Contenido 1 Definición 2 Conceptos similares 3 Véase también 4 …   Wikipedia Español

• limit — {{Roman}}I.{{/Roman}} noun ADJECTIVE ▪ outer ▪ northern, southern, etc. ▪ three mile, etc. ▪ city …   Collocations dictionary

• Threshold Limit Value — The Threshold Limit Value (TLV) of a chemical substance is a level to which it is believed a worker can be exposed day after day for a working lifetime without adverse health effects. Strictly speaking, TLV is a reserved term of the American… …   Wikipedia

• Recommended Exposure Limits*, Table — ▪ Table type of exposure maximum permissible dose Occupational exposures (annual)** Effective dose equivalent limit (stochastic effects) 50 mSv Dose equivalent limits for tissues and organs (non stochastic effects) Lens of eye 150 mSv All others… …   Universalium

• Beryllium — (pronEng|bəˈrɪliəm) is a chemical element with the symbol Be and atomic number 4. A bivalent element, beryllium is a steel grey, strong, light weight yet brittle alkaline earth metal. It is primarily used as a hardening agent in alloys, most… …   Wikipedia

• Ammonia — For other uses, see Ammonia (disambiguation). Ammonia …   Wikipedia

• Benzene — For other uses, see Benzene (disambiguation). See also: Benzole Benzene …   Wikipedia