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CAOHC CERTIFICATION QUESTIONS WITH 100% CORRECT ANSWERS..

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CAOHC CERTIFICATION QUESTIONS WITH 100% CORRECT ANSWERS

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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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