HORTICULTURE SCIENCE
FUNDAMENTALS OF HORTICULTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Standards. OSHA requires employers to implement a hearing conservation program when noise exposure is at or above 85 decibels averaged over 8 working hours, or an 8-hour time-weighted average (TWA).
Detailed explanation-2: -For example, you can listen to sounds at 85 dBA for up to 8 hours. If the sound goes up to 88 dBA, it is safe to listen to those same sounds for 4 hours. And if the sound goes up to 91 dBA, your safe listening time is down to 2 hours.
Detailed explanation-3: -How much noise is too much? 85 Decibels (dB)-the “Action Level” where hearing protection is required. 90 dB-the OSHA, 8 hour average exposure limit. 100 dB-exposures longer than 15 minutes are not recommended.
Detailed explanation-4: -Between 80 and 85 dBA, hearing protection is advisable if your exposure is unusually long, or if you engage in other loud activities throughout the day. For noise under 82 dBA, hearing protection is not required but may be used.