7.1 Avoiding Overprotection
Implementation and Behaviour
What it is: Overprotection occurs when a hearing protector provides too much attenuation, reducing noise to a level so low that it isolates the worker.
This can be dangerous, as it may prevent them from hearing critical sounds like alarms, warnings, or approaching vehicles.
What it is: Overprotection occurs when a hearing protector provides too much attenuation, reducing noise to a level so low that it isolates the worker. This can be dangerous, as it may prevent them from hearing critical sounds like alarms, warnings, or approaching vehicles. It can also lead to workers removing their hearing protection, completely negating its benefit.
Best Practice: The aim is to reduce noise exposure to between 70 and 80 dB(A) at the ear. This is low enough to be safe but high enough to maintain situational awareness. Fit testing is crucial for achieving this balance, as it allows for the selection of a protector with the right amount of attenuation for the individual and their specific noise environment.