Definitions - Short-term and Brief exposure

Randy

Super Moderator
#2
OHSA continually refers to 8hr Time Weighted Average for noise other exposure limits are set by NIOSH and other bodies and defined kinda like this...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 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. (I stole the STEL definition)

Permissible Exposure Limits (PEL) can vary though depending on the material involved.
 

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