The threshold limit value (TLV) is a level of occupational exposure to a hazardous substance where it is believed that nearly all healthy workers can repeatedly experience at or below this level of exposure without adverse effects.

2022年4月25日 · TLVs are the maximum average airborne concentration of a hazardous material to which healthy adult workers can be exposed during an 8-hour workday and 40-hour workweek—over a working lifetime—without experiencing significant adverse health effects. A TLV has three components:

2017年5月5日 · Threshold Limit Value (TLV) is a registered and reserved term of the American Conference of Governmental Industrial Hygienists (ACGIH). It is an occupational exposure value recommended by ACGIH to which it is believed nearly all workers can be exposed for lifetime without affecting health.

Threshold Limit Values (TLVs ®) refer to airborne concentrations of chemical substances and represent conditions under which it is believed that nearly all workers may be repeatedly exposed, day after day, over a working lifetime, without adverse effects.

Threshold Limit Values (TLVs ®) refer to airborne concentrations of chemical substances and represent conditions under which it is believed that nearly all workers may be repeatedly exposed, day after day, over a working lifetime, without adverse health effects.

2019年2月8日 · What Is Threshold Limit Value? Threshold Limit Values and Biological Exposure Indices are health-based values. TLVs are based on airborne concentrations of chemical substances.

Threshold Limit Values (TLVs ®) and Biological Exposure Indices (BEIs ®) are determinations made by a voluntary body of independent knowledgeable individuals.

ACGIH ® publishes guidelines known as Threshold Limit Values (TLVs ®) and Biological Exposure Indices (BEIs ®) for use by industrial hygienists in making decisions regarding safe levels of exposure to various chemical and physical agents found in the workplace.

2024年4月8日 · Time-weighted average threshold limit values (or TLV – TWAs), then, are measures of the average concentration of a hazardous substance that a worker can safely be exposed to over the course of a typical work week or workday.

Threshold Limit Values or TLVs are air quality standards developed by the American Conference of Governmental Industrial Hygienists. They are the model for many other air quality limits such as OSHA’s permissible exposure limits (PELs).