How often must a biological calibration be performed?
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Daily if audiometry is conducted
When does OSHA enforce hearing protection device usage?
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Greater than or equal to 90 dBA
In a pure tone air conduction audiogram graph, what does the horizontal axis
represent?
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Frequency (Hz)
Name two sources of hazardous noise
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1. Occupational noise exposure
2. Non-occupational noise exposure
What are some advantages of using manual audiometer?
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1. Accommodates subjects with tinnitus
2. Best method for hard to test employees
100 dB + 100 dB = ??
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103 dB
,What is a CAOHC certified student?
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Certified occupational hearing conservationist (COHC)
Define frequency
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The number of cycles per second
What occupation has the highest percentage of noise induced hearing loss?
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Manufacturing
How many days after the retest must a recordable STS be documented on the OSHA
300 log?
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7 days
, What are the OSHA record retention requirements?
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Noise exposure documents - 2 years
Audiometric records - duration of employment
What are the OSHA requirements for hearing protection devices?
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1. HPDs shall attenuate noise to less than or equal to 90 dBA TWA or 85 dBA
TWA for employees who have experienced a STS
2. Employer shall evaluate hearing protection device attenuation for
specific noise environments
3. Employer shall insure initial fitting and supervise correct use
4. Hearing protection devices are replaced as necessary
Sloping configuration typical of ____________________
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Presbycusis
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Daily if audiometry is conducted
When does OSHA enforce hearing protection device usage?
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Greater than or equal to 90 dBA
In a pure tone air conduction audiogram graph, what does the horizontal axis
represent?
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Frequency (Hz)
Name two sources of hazardous noise
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1. Occupational noise exposure
2. Non-occupational noise exposure
What are some advantages of using manual audiometer?
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1. Accommodates subjects with tinnitus
2. Best method for hard to test employees
100 dB + 100 dB = ??
Give this one a try later!
103 dB
,What is a CAOHC certified student?
Give this one a try later!
Certified occupational hearing conservationist (COHC)
Define frequency
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The number of cycles per second
What occupation has the highest percentage of noise induced hearing loss?
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Manufacturing
How many days after the retest must a recordable STS be documented on the OSHA
300 log?
Give this one a try later!
7 days
, What are the OSHA record retention requirements?
Give this one a try later!
Noise exposure documents - 2 years
Audiometric records - duration of employment
What are the OSHA requirements for hearing protection devices?
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1. HPDs shall attenuate noise to less than or equal to 90 dBA TWA or 85 dBA
TWA for employees who have experienced a STS
2. Employer shall evaluate hearing protection device attenuation for
specific noise environments
3. Employer shall insure initial fitting and supervise correct use
4. Hearing protection devices are replaced as necessary
Sloping configuration typical of ____________________
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Presbycusis
