Threshold Limit Values (TLVs) are guidelines provided by which organization?

Threshold Limit Values (TLVs) are guidelines provided by which organization?

• A. OSHA
• B. ACGIH
• C. NIOSH
• D. EPA

Answer: (B)

Threshold Limit Values are exposure guidelines developed by the American Conference of Governmental Industrial Hygienists (ACGIH). They indicate the maximum airborne concentrations to which workers can be exposed day after day without expected adverse health effects for specified exposure durations. TLVs are meant as practical guidance for industrial hygiene practice rather than legally enforceable limits, and they’re published in ACGIH’s Threshold Limit Values and Biological Exposure Indices handbook. This distinguishes them from OSHA’s enforceable PELs, NIOSH’s RELs (recommended, not enforceable), and EPA’s regulatory standards.

Threshold Limit Values are exposure guidelines developed by the American Conference of Governmental Industrial Hygienists (ACGIH). They indicate the maximum airborne concentrations to which workers can be exposed day after day without expected adverse health effects for specified exposure durations. TLVs are meant as practical guidance for industrial hygiene practice rather than legally enforceable limits, and they’re published in ACGIH’s Threshold Limit Values and Biological Exposure Indices handbook. This distinguishes them from OSHA’s enforceable PELs, NIOSH’s RELs (recommended, not enforceable), and EPA’s regulatory standards.