O.S.H.A., (Occupational Safety & Health Administration), was created to make sure that employers keep a safe working environment for their employees. This federal law applies to all private employers, regardless of company size. Also, many states have their own OSHA type laws, which are more strict than the federal OSHA. OSHA states that sound levels should not exceed 85/90 dB SPL (decibels of sound pressure level) for no longer than 8 hours. Levels higher than that would require the exposed person to wear hearing protection.
Here is a typical breakdown of OSHA guidelines for maximum time exposure for potential hearing loss and/or permanent damage. (Regulation # 1910.95 - Occupational Noise Exposure)
90 dB SPL - 8 hours
95 dB SPL - 4 hours
100 dB SPL - 2 hours
105 dB SPL - 1 hour
110 dB SPL - 30 mins.
115 dB SPL - 15 mins.
115 dB and higher - 0 mins. - (Pain Threshold) - In other words, instant permanent hearing damage
Asa ca aviz celor care sonorizeaza!
NU ne faceti sa ne pierdem urechile; Stim ca voi sunteti deja surzi.
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