The occupational safety nurse in a manufacturing plant is developing an employee program to prevent hearing loss. Which statement by a participant indicates that more teaching is needed?
A) "I should limit exposure to 85 dB to not more than 8 hours per day."
B) "The louder the noise, the less time I should be exposed to it."
C) "I should cut exposure in half for every 3-dB increase in noise intensity."
D) "Noise outside of work will not affect my hearing."
D) "Noise outside of work will not affect my hearing."
Explanation: A) The National Institute for Occupational Safety and Health (NIOSH) promotes an allowable exposure limit of 8 hours per day for an 85-dB sound and applies a reduction in that time exposure limit as the intensity of the sound increases above 85 dB.
B) Following NIOSH calculations, time exposure is cut in half for each 3-dB increase in the noise intensity (a doubling of the energy).
C) Following NIOSH calculations, time exposure is cut in half for each 3-dB increase in the noise intensity (a doubling of the energy).
D) Noise-induced hearing loss can result either from prolonged exposure to a high-intensity noise, at work or at home, such as a jackhammer or leafblower, or from a single exposure to a brief but intense impulse sound, such as a gunshot close to the ear or a fireworks explosion.
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