What noise level requires firefighters to wear hearing protection?

Firefighters are required to wear hearing protection when noise levels reach 90 dB or higher. This standard is in accordance with the guidelines set by organizations like the Occupational Safety and Health Administration (OSHA), which suggests that prolonged exposure to noise levels at or above this threshold can lead to hearing loss. At 90 dB, the potential for permanent hearing damage increases significantly with extended exposure, emphasizing the need for protective measures to safeguard the hearing of emergency responders.

The other noise levels listed, while still posing risks, do not universally require protective equipment according to the established safety standards for occupational noise exposure. Thus, 90 dB is the critical level that serves as a benchmark for when hearing protection becomes necessary.