Colorado Noise Control Study and Recommendations
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FAQ
How loud is the hospital? The World Health Organization, International Noise Council, and Environmental Protection Agency have proposed noise limits for hospitals ranging from a 35-45 A-weighted decibel [dB(A)] level during the day to a 20-35 dB(A) level at night.
WHO Guidelines for NoiseUpdated On : Specific EnvironmentTime Base (hours)Standard limits as per WHO guidelinesLAeq [dB]Industrial, commercial, shopping and traffic areas, indoors and outdoors2470Ceremonies, festivals and entertainment events4100Public addresses, indoors and outdoors18511 more rows ?
The World Health Organization (WHO) recommends that noise exposure levels should not exceed 70 dB over a 24-hour period, and 85 dB over a 1-hour period to avoid hearing impairment.
The exposure to noise can be reduced by eliminating the source of noise (if possible), substituting the source with a quieter one, applying engineering modifications, using administrative controls, and by using protective equipment. The best way to reduce exposure to noise is to engineer it out at the design stage.
For a good night's sleep, the equivalent sound level should not exceed 30 dB(A) for continuous background noise, and individual noise events exceeding 45 dB(A) should be avoided. In setting limits for single night-time noise exposures, the intermittent character of the noise has to be taken into account.
Choose low-noise tools and machinery. Maintain and lubricate machinery and equipment (e.g., oil bearings) Place a barrier between the noise source and employee (e.g., sound walls or curtains) Enclose or isolate the noise source.
Allowable residential noise levels vary, but most fall within the following ranges: 55 dB(A) from 7 a.m. - 10 p.m. and 50 dB(A) from 10 p.m. - 7 a.m.
Noise Sources Regulated by EPA EPA or a designated Federal agency regulates noise sources, such as rail and motor carriers, low noise emission products, construction equipment, transport equipment, trucks, motorcycles, and the labeling of hearing protection devices.