Exposure Limits
Medical monitoring of workers is also required when legal limits and exposure times are exceeded.
Time-weighted average limit (TWA): The employer must ensure that no employee is exposed to an airborne concentration of asbestos in excess of 0.1 fiber per cubic centimeter of air as an eight (8) hour time-weighted average (TWA).
Excursion limit: The employer must ensure that no employee is exposed to an airborne concentration of asbestos in excess of 1.0 fiber per cubic centimeter of air (1 f/cc) as averaged over a sampling period of thirty (30) minutes.
Knowledge Check Choose the best answer for the question.
7-5. When is medical monitoring of workers required when employees are exposed to asbestos?
You forgot to answer the question!