Here is a free, fun and intriguing way to test your safety knowledge. Every week, you’ll receive an email with a question to answer. Compete for prizes, compare your score to colleagues, and enjoy!

This Week's Question

OSHA has set standards for workers’ permissible exposure limits (PELs) to airborne hazardous substances. Which of the following is the definition of the ceiling limit?

A) The employee's 15-minute time-weighted average exposure, which must not be exceeded at any time during a workday unless another time limit is specified in a parenthetical notation below the limit.
B) The employee's maximum allowable average airborne exposure in any 8-hour work shift of a 40-hour workweek.
C) An airborne concentration of a toxic substance in the work environment, which should never be exceeded.
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