CHMM
IHMM CHMM Certified Hazardous Materials Manager
Industrial HygieneEnglish
Exam overviewPractice session
In industrial hygiene, the permissible exposure limit (PEL) is defined as an 8-hour time-weighted average (TWA) concentration of a substance that workers may be repeatedly exposed to without adverse effects. Which agency sets PELs that are legally enforceable?
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