Noise and hearing loss prevention
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Noise and hearing loss prevention
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Noise and hearing loss prevention
- 4. Problems hearing over the telephone Straining to understand conversation Trouble following the conversation when two or more people talk at the same time Trouble hearing in a noisy background People get annoyed because you misunderstand what they say People often complain that you turn up the volume too high on the television or radio You often find yourself asking people to repeat themselves Many people you talk to seem to mumble or speak unclearly Misunderstanding what others are saying and responding inappropriately Trouble understanding the speech of women and children (Women and children typically speak in higher frequencies, which are the first frequencies to be affected by NIHL)
- 6. sound
- 14. • How We Hear • What causes hearing loss? • How hearing loss occurs
- 16. About 22 million workers are exposed to hazardous noise each year About 10 million workers are exposed to solvents An unknown number are exposed to other ototoxicants
- 18. • Anyone • All workers must be well-protected
- 20. Level of risk is influenced by differences in exposure conditions: • Noise level • As noise level increases, the risk also increases • Duration of exposure • The longer the noise lasts, the more hazardous it becomes • Impulsiveness • Noises that have very abrupt starts and stops (such as hammering, gunfire, or fireworks) are more dangerous than constant noise of the same overall level • Intermittency • Periods of relative quiet between exposures allow the ear to "rest" and reduce the risk • Ototoxic chemicals
- 22. OSHA – Occupational noise exposure 1910.95 • OSHA establishes permissible exposure limit (PEL) • 90 dB(A) for all workers for an 8 hour day NIOSH – Recommended Exposure Limits (REL) for noise based on the best available science and practice • 85 dB(A) over an 8-hour average (Time-Weighted Average orTWA)
- 24. Time to reach 100% noise dose Exposure level per NIOSH REL Exposure level per OSHA PEL 8 hours 85 dB(A) 90 dB(A) 4 hours 88 dB(A) 95 dB(A) 2 hours 91 dB(A) 100 dB(A) 1 hour 94 dB(A) 105 dB(A) 30 minutes 97 dB(A) 110 dB(A) 15 minutes 100 dB(A) 115 dB(A)
- 25. employers must provide worker must wear
- 29. preventable Noises at or above 85 decibels
- 30. • C Fitting Foam Earplugs How to ChooseThe Best Hearing Protection by UsingThe Noise Reduction Rating (NRR)
Editor's Notes
- Imagine a world without sound. Without hearing the birds sing, Without hearing the voices of your loved ones.
- End with We don’t know who will be more susceptible., but there are some risk factors that increase the odds.
- Gender- men are twice as likely to develop hearing loss than women Age- hearing loss gradually occurs in most of us as we grow older Most older people who experience hearing loss have a combination of both age-related hearing loss and noise-induced hearing loss Race/ethnicity-biological factors Genetics- Inherited genetic defects and gene mutations
- Explain what the chart means.
- Hazardous noise is present in almost all occupations.
- All are above the OSHA and NIOSH levels. Hearing protection is required?
- The good news is it’s preventable.
- Most important is that they are comfortable, so you will wear them. Just like taking off shoes that don’t fit properly, you’ll take them out, exposing yourself to hazardous noise.