CAOHC Bold Items Questions with
Complete Solutions
Another 5dB use would be the _____ _____ or _____ _____. Every time the sounds level
increases by 5dB, the amount of time exposed is cut in half but the dose doubles. 5dB
Exchange or Doubling Rate
When an OHC needs to be recertified. Every 5 years
How many months to get an employee's baseline if you have an onsite program and clinic. 6
months
Number to use to convert attenuation rating of hearing protection from the C-scale to the A-scale.
7 dB
Examble: NRR-7 or 28NRR - 7 dB = 21 dBA of attenuation.
Number that reflects significant change in hearing. If an employee has an average change in
hearing of ___ dB or more when baseline is compared to annual test, then they have a STS.
10 dB
, Another use of 10 dB Unacceptable range in daily calibration, 5 dB is okay.
During hearing testing, if an employee hears the test tones, you decrease in ___ dB steps. If the
tones are not heard, they are increased in ___ dB steps. 10; 5
How many months to get an employee's baseline if you use a mobile van service provider? 12
months
The amount of hours a person must avoid hazardous noise before a baseline or retest. 14
hours
The number of days an employer has to inform an employee that they have experienced a shift in
hearing from when the employer was performed. 21 days
Normal hearing levels 0-25 dB
Complete Solutions
Another 5dB use would be the _____ _____ or _____ _____. Every time the sounds level
increases by 5dB, the amount of time exposed is cut in half but the dose doubles. 5dB
Exchange or Doubling Rate
When an OHC needs to be recertified. Every 5 years
How many months to get an employee's baseline if you have an onsite program and clinic. 6
months
Number to use to convert attenuation rating of hearing protection from the C-scale to the A-scale.
7 dB
Examble: NRR-7 or 28NRR - 7 dB = 21 dBA of attenuation.
Number that reflects significant change in hearing. If an employee has an average change in
hearing of ___ dB or more when baseline is compared to annual test, then they have a STS.
10 dB
, Another use of 10 dB Unacceptable range in daily calibration, 5 dB is okay.
During hearing testing, if an employee hears the test tones, you decrease in ___ dB steps. If the
tones are not heard, they are increased in ___ dB steps. 10; 5
How many months to get an employee's baseline if you use a mobile van service provider? 12
months
The amount of hours a person must avoid hazardous noise before a baseline or retest. 14
hours
The number of days an employer has to inform an employee that they have experienced a shift in
hearing from when the employer was performed. 21 days
Normal hearing levels 0-25 dB
