Question 2795 Deck General

70% to pass

The airborne concentrations of substances (such as H2S) under which nearly all workers may be repeatedly exposed without adverse effects defines which of the following phrases?

A substance limit values
B concentration limits
C threshold limit values
D exposure limits
AI Explanation

The correct answer is C) threshold limit values. Threshold limit values (TLVs) refer to the airborne concentrations of substances under which nearly all workers may be repeatedly exposed without adverse health effects. TLVs are established by the American Conference of Governmental Industrial Hygienists (ACGIH) and represent the levels at which workers can be exposed without experiencing significant risk of health impairment. The other options are incorrect because: A) Substance limit values is not a commonly used term. B) Concentration limits is a more general term that does not specifically refer to the levels at which worker exposure is considered safe. D) Exposure limits is a broader term that can include various types of exposure limits, including TLVs.

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