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NOISE AND HEALTH
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NOISE AND HEALTH

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Published in: Health & Medicine

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  • 1. NOISE AND HEALTH
  • 2. INTRODUCTION• Noise – wrong sound in the wrong place in the wrong time• Daily exposure up to 85 dB is tolerable level• Worldwide, noise-induced hearing impairment is the most prevalent irreversible occupational hazard
  • 3. Acceptable noise levels(dB)• Education : class – 30-40 library – 35-40• Hospitals : wards – 20-35• Residential : bed room – 25 living room – 40• Commercial : office – 35-45 restaurant – 40-60• Industry : workshop – 40-60 lab – 40-50
  • 4. EFFECTS OF NOISEAuditory effects• Auditory fatigue – 90 dB, 4000Hz• Deafness - temporary - permanent - occupational HL Permanent deafness – repeated exposure to noise of 100dB / sudden exposure to 160dB or more
  • 5. Non auditory effects• Interference with speech - 300 - 500hz Speech sound level should exceed SIL by 12dB• Annoyance• Efficiency• Physiological changes• Economic losses
  • 6. CONTROL OF NOISE• Careful planning of cities• Control of vehicles• Industries and railways
  • 7. • Acoustic insulation of buildings• Protection of exposed persons Ear muff• Legislation - The Noise Pollution (Regulation and Control) Rules, 2000• Education Ear plugs