Rescuers exposed to any noise in excess of what level must be provided with appropriate hearing protection devices?

• A. 85 dB
• B. 90 dB
• C. 95 dB
• D. 100 dB

Answer: (B)

Loud noises in rescue environments pose a real risk to hearing, so protection is provided once exposure reaches a level where damage can occur. The threshold used here is 90 dBA; when noise exposure is at or above that level, rescuers must be provided with hearing protection devices. This aligns with occupational safety standards that set 90 dBA as the permissible exposure limit for an 8-hour workday, and the allowable exposure time decreases as the level gets louder (for every 5 dB increase, the permissible time roughly halves). The 85 dBA level is an action level for implementing a hearing conservation program, but the explicit requirement to furnish hearing protection is tied to reaching 90 dBA.