What is the threshold limit value (TLV) for occupational noise exposure established by ACGIH?

The threshold limit value (TLV) for occupational noise exposure established by the American Conference of Governmental and Industrial Hygienists (ACGIH) is set at 85 dBA for an 8-hour time-weighted average. This guideline is crucial as it aims to protect workers from the harmful effects of prolonged exposure to high noise levels, which can lead to noise-induced hearing loss and other auditory-related issues.

The TLV is based on empirical research demonstrating that sustained noise levels at or above this threshold can pose significant health risks. The duration of exposure is an important factor; hence the 8-hour time-weighted average reflects typical work shifts, establishing a benchmark for safe listening environments in workplaces. By setting this standard, ACGIH promotes safer working conditions where employers are encouraged to monitor noise levels and implement hearing conservation measures as needed.