Search results
Results from the WOW.Com Content Network
An occupational exposure limit is an upper limit on the acceptable concentration of a hazardous substance in workplace air for a particular material or class of materials. It is typically set by competent national authorities and enforced by legislation to protect occupational safety and health .
National Institute for Occupational Safety and Health (NIOSH) RELs are designed to protect the health and well-being of workers by recommending safe exposure levels. To really use these guidelines well, safety professionals need to understand the recommended exposure levels, how to measure them, and ways to make sure workers aren't exposed to harmful stuff.
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 such as high level noise. Permissible exposure limits were established by the Occupational Safety and Health Administration (OSHA). Most of OSHA's PELs were issued shortly after adoption of ...
The U.S. Occupational Safety and Health Administration defines energy density limit for exposure periods of 0.1 hours or more to 10 mW/cm 2; for shorter periods the limit is 1 mW-hr/cm 2 with limited excursions above 10 mW/cm 2. The U.S. Food and Drug Administration (FDA) standard for microwave oven leakage puts limit to 5 mW/cm 2 at 2 inches ...
The exposure assessment is initiated by selecting the appropriate exposure limit averaging time and "decision statistic" for the agent. Typically the statistic for deciding acceptable exposure is chosen to be the majority (90%, 95% or 99%) of all exposures to be below the selected occupational exposure limit.
Chemical warfare agents have extremely low occupational exposure limits that are below the sensitivity threshold for most typical monitoring methods, and often require specialized equipment. For biological agents , some methods can determine if a suspect material is of biological origin without identifying it, while identification requires ...
In 1998, directive 80/1107/EEC was repealed and replaced by a new regime under the chemical agents directive (directive 98/24/EC). The directive defines occupational exposure limit value as "the limit of the time-weighted average of the concentration of a chemical agent in the air within the breathing zone of a worker over a specified reference ...
These exposure limits include evidence that a certain amount of a chemical exposure is linked to one or more adverse health effects. For instance, heart disease [10] is more prevalent in workers who are exposed to the chemicals found in engine exhausts. Exposure to carbon tetrachloride has shown to cause liver and kidney damage. [11]