Noise Noise is, basically, unwanted sound, and is arguably the most commonly experienced industrial hazard. Many countries have legislation in place to protect workers at risk of being exposed to dangerously loud noise, usually deemed to be 90dB(A) and above. In welding and allied industries noise levels are likely to exceed these, and it is often difficult to engineer a reduction in noise. Hearing protection, in the form of ear plugs and ear muffs, is available and must be worn in noisy areas if workers are to prevent themselves suffering noise induced industrial deafness.
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