Unit 4: Hearing Conservation Program Flashcards
The frequency or pitch of a sound is expressed in what?
Hz
From where does the external auditory canal receive sound waves?
Auricle
All the following components make up the structures of the inner ear with the exception of the
a. semicircular canals.
b. organ of Corti.
c. cochlea.
d. pinna.
d. pinna
Which part of the ear is considered tonotopic?
Basilar membrane
Hearing conservationist recertification must be renewed every
5 years
What is the generally acceptable patient no-show appointment rate for a base when monitoring the hearing conservation program (HCP)?
Less than 10 percent
After approximately what time period do individuals who have been exposed to high noise levels for a short time usually make a complete recovery?
14 to 16 hours
At what frequency range in hertz (Hz) can permanent hearing loss be diagnosed?
3000 to 6000 Hz
Which is a database application used to test hearing and manage the Hearing Conservation Program (HCP) data within the Department of Defense (DOD)?
DOHERS-HC
What form is used to refer a patient to the Hearing Conservation Diagnostic Center (HCDC)?
AF Form 1672
If workers cannot receive audiograms before they begin working in a hazardous noise environment, within how many days prior to beginning a job must the reference audiogram be performed?
30
The reference audiogram is documented on a
DD Form 2215
Who sets the standards for calibration that the Air Force uses today?
American National Standards Institute
On what form are the daily calibration checks recorded?
DD Form 2217
When compared to the baseline audiogram measured in decibels (dB) at various frequencies measured in hertz (Hz), what difference constitutes a discrepancy on a daily calibration check?
+/- 5 dB or more at 500 through 4000 Hz or +/- 10 dB at 6000 Hz
Why do we perform audiometric monitoring?
Detect hearing loss at its earliest stages
How often is the audiometer electroacoustic calibration performed?
Annually
What form is used for a referral in the Hearing Conservation Program (HCP)?
AF Form 1672
What is the recommended action for a worker who is unable to wear hearing protective devices (HPD)?
Refer to HCDC/HCC
Who must request fitness and risk evaluations?
Medical provider or line management
Which publication is used to evaluate flying personnel who exceed hearing standards for their flying class?
AFI 48–123
Occupational Safety and Health Administration (OSHA) reportable hearing loss is defined as a work related positive threshold shift, relative to the current reference audiogram of an average of how many decibels (dB) at 2000, 3000, 4000 hertz (Hz)?
10 dB
By what amount will earplugs or earmuffs generally reduce noise levels in decibels (dB)?
20 dB
What is the additional attenuation factor in decibels (dB) you can expect when earmuffs are worn in combination with earplugs?
3 dB
Initial education should be accomplished for new employees who are exposed to hazardous noise no greater than
30 days after beginning duties in a hazardous noise area
When employees are not complying with the wearing of hearing protection devices, document it on
Chronological Record of Workplace Surveillance
Which part of the cleaning process for earplugs is the most important?
Air dried
Where should personnel report if they experience irritation or discomfort of the ear canals or head as a result of routine use of hearing protection?
Public Health
A standard threshold shift found on monitoring audiometry which resolves after a 14-hour noise-free period after the first or second follow-up will be considered a
temporary threshold shift
When a standard threshold shift (STS) is found on the first 14-hours noise-free audiogram (NFA),
immediately follow with a second noise-free test
