Short-Term Exposure Limits (STELs)

Short-Term Exposure Limits (STELs) are regulatory guidelines that specify the maximum concentration of a hazardous substance a worker can be exposed to over a brief period, typically 15 minutes. They are designed to prevent immediate health effects and reduce risk during short-term exposures, especially during unexpected or temporary situations. STELs apply when exposure could be higher than the general permissible level but only for a limited time, helping ensure worker safety without causing acute health issues. These limits are established based on scientific research and are used alongside other exposure guidelines to protect worker health.