What noise level requires the use of earplugs for protection?

The correct answer is based on established safety standards regarding noise exposure in occupational settings. Hearing protection, specifically earplugs, is recommended when noise levels reach 85 dB (decibels) or higher to prevent hearing loss. The threshold of 90 dB is significant as exposure to noise at this level can lead to hearing damage over time, particularly with prolonged or repeated exposure.

In many workplace safety guidelines, including those from organizations like the Occupational Safety and Health Administration (OSHA), it is indicated that at noise levels at or above 85 dB, employers are required to implement a hearing conservation program which includes the use of hearing protection such as earplugs. Shifting to the higher levels of noise—90 dB and above—further emphasizes the need for protective measures, as exposure time before hearing damage occurs decreases notably.

By understanding these noise levels and their implications for hearing protection, individuals can better adhere to safety protocols and maintain their auditory health in potentially hazardous environments.