CAOHC REVIEW
Unit of measurement for frequency (pitch) - Answer-Hertz (Hz) or Kilohertz (kHz)
Time-Weighted Average changes if an employee works longer than _____ hour shifts. - Answer-8 hour
Time-Weighted Average calculates ________________________ or dB____ and the ________________
of noise exposure. - Answer-Amplitude ; dB(A) ; duration
According to OSHA, the ACTION LEVEL (AL) at which workers should be included in a hearing
conservation program occurs when they are exposed to a consistent sound level of ___________
dB_____ for an entire ____-hour shift. - Answer-85dB(A) ; 8-hour shift
According to OSHA, the permissible exposure limit (PEL) for 8 hours that should not be exceeded is: -
Answer-90 dB(A)
Several government agencies, including ______, _________, FRA, and individual state and local
governments, develop and publish noise related regulations requiring compliance by employers. -
Answer-OSHA ; DoD
,If more than one regulation applies to a workplace, be sure to follow the most _______________ one. -
Answer-Stringent
Regardless of the 8-hour average, impact or impulse noise exposure should never exceed ___________
dB(P) - Answer-140 dB(P)
If the 8-hour Time-Weighted Average is 90 dB(A) or above, the Permissible Exposure Limit has been
reached and additional requirements apply. These include:
1. The use of __________ __________ becomes mandatory.
2. Employers must consider feasible ________________ or ________________ controls to reduce noise
exposure.
3. Employers must ensure hearing protection reduces sound levels reaching the ear to below ________
db_____. - Answer-1. hearing protection
2. engineering or administrative
3. 90 dB(A)
Noise exposures are considered likely to be harmful if shouting is required in order to communicate to a
person __________ feet away. - Answer-3 feet
The primary role of CAOHC is to advocate for comprehensive programs that promote _____________
________________ in occupational hearing conservation. - Answer-Best Practices
Which is true about the characteristics of sound called "frequency" (pitch, like piano notes)? It is
measured in _____________. - Answer-Hertz
What unit of measurement is used for amplitude (intensity) of sound? - Answer-Decibels
An impulse or impact sound can be described as:
1. an intense sound with __________ duration.
, 2. a sound that should be _____________ in a noise survey
3. A noise lasting less than ________ second - Answer-1. short
2. quantified
3. 1 second
A sound with varying frequency, amplitude, and temporal characteristics best describes a
______________ sound. - Answer-complex
Temporal characteristics of sound include all except:
A. Continuous
B. Intermittent
C. Steady State
D. Pure Tone - Answer-Pure Tone
The Permissible Exposure Limit is the limit that should not be _________. The Action Level (AL) is the
trigger for employers to _________________________________________. - Answer-Exceeded ; enroll
people in a Hearing Conservation Program
Explain how to determine sound levels when the sound in an area is at 85 dB(A) and another piece of
equipment is added with a sound level of 85 dB(A)... - Answer-plus 3 dB increase to larger number.
A hearing conservation program should include:
1. __________________ controls to reduce noise levels
2. The use of _______________ ___________________.
3. ________________ _________________ testing - Answer-1. engineering
2. hearing protection
3. Annual audiometric
Unit of measurement for frequency (pitch) - Answer-Hertz (Hz) or Kilohertz (kHz)
Time-Weighted Average changes if an employee works longer than _____ hour shifts. - Answer-8 hour
Time-Weighted Average calculates ________________________ or dB____ and the ________________
of noise exposure. - Answer-Amplitude ; dB(A) ; duration
According to OSHA, the ACTION LEVEL (AL) at which workers should be included in a hearing
conservation program occurs when they are exposed to a consistent sound level of ___________
dB_____ for an entire ____-hour shift. - Answer-85dB(A) ; 8-hour shift
According to OSHA, the permissible exposure limit (PEL) for 8 hours that should not be exceeded is: -
Answer-90 dB(A)
Several government agencies, including ______, _________, FRA, and individual state and local
governments, develop and publish noise related regulations requiring compliance by employers. -
Answer-OSHA ; DoD
,If more than one regulation applies to a workplace, be sure to follow the most _______________ one. -
Answer-Stringent
Regardless of the 8-hour average, impact or impulse noise exposure should never exceed ___________
dB(P) - Answer-140 dB(P)
If the 8-hour Time-Weighted Average is 90 dB(A) or above, the Permissible Exposure Limit has been
reached and additional requirements apply. These include:
1. The use of __________ __________ becomes mandatory.
2. Employers must consider feasible ________________ or ________________ controls to reduce noise
exposure.
3. Employers must ensure hearing protection reduces sound levels reaching the ear to below ________
db_____. - Answer-1. hearing protection
2. engineering or administrative
3. 90 dB(A)
Noise exposures are considered likely to be harmful if shouting is required in order to communicate to a
person __________ feet away. - Answer-3 feet
The primary role of CAOHC is to advocate for comprehensive programs that promote _____________
________________ in occupational hearing conservation. - Answer-Best Practices
Which is true about the characteristics of sound called "frequency" (pitch, like piano notes)? It is
measured in _____________. - Answer-Hertz
What unit of measurement is used for amplitude (intensity) of sound? - Answer-Decibels
An impulse or impact sound can be described as:
1. an intense sound with __________ duration.
, 2. a sound that should be _____________ in a noise survey
3. A noise lasting less than ________ second - Answer-1. short
2. quantified
3. 1 second
A sound with varying frequency, amplitude, and temporal characteristics best describes a
______________ sound. - Answer-complex
Temporal characteristics of sound include all except:
A. Continuous
B. Intermittent
C. Steady State
D. Pure Tone - Answer-Pure Tone
The Permissible Exposure Limit is the limit that should not be _________. The Action Level (AL) is the
trigger for employers to _________________________________________. - Answer-Exceeded ; enroll
people in a Hearing Conservation Program
Explain how to determine sound levels when the sound in an area is at 85 dB(A) and another piece of
equipment is added with a sound level of 85 dB(A)... - Answer-plus 3 dB increase to larger number.
A hearing conservation program should include:
1. __________________ controls to reduce noise levels
2. The use of _______________ ___________________.
3. ________________ _________________ testing - Answer-1. engineering
2. hearing protection
3. Annual audiometric
