12.2.5.3-2 Limiting Noise Transmission

Steps should be taken to limit the transmission of noise.

Additional Information:
Noise can be reduced by increasing the distance of the noise source from the worker. This technique is less effective for low frequencies. Sound-attenuating barriers or enclosures should be used when workers are required to work near equipment that, despite quieting measures, produces high levels of noise. Sound-absorbing materials can absorb 70% of the noise that strikes them. These materials are effective for both low and high frequencies.