Unit 4: Hearing Conservation Program

Question 1

The frequency or pitch of a sound is expressed in what?

Answer 1

Hz

Question 2

From where does the external auditory canal receive sound waves?

Answer 2

Auricle

Question 3

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.

Answer 3

d. pinna

Question 4

Which part of the ear is considered tonotopic?

Answer 4

Basilar membrane

Question 5

Hearing conservationist recertification must be renewed every

Answer 5

5 years

Question 6

What is the generally acceptable patient no-show appointment rate for a base when monitoring the hearing conservation program (HCP)?

Answer 6

Less than 10 percent

Question 7

After approximately what time period do individuals who have been exposed to high noise levels for a short time usually make a complete recovery?

Answer 7

14 to 16 hours

Question 8

At what frequency range in hertz (Hz) can permanent hearing loss be diagnosed?

Answer 8

3000 to 6000 Hz

Question 9

Which is a database application used to test hearing and manage the Hearing Conservation Program (HCP) data within the Department of Defense (DOD)?

Answer 9

DOHERS-HC

Question 10

What form is used to refer a patient to the Hearing Conservation Diagnostic Center (HCDC)?

Answer 10

AF Form 1672

Question 11

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?

Answer 11

30

Question 12

The reference audiogram is documented on a

Answer 12

DD Form 2215

Question 13

Who sets the standards for calibration that the Air Force uses today?

Answer 13

American National Standards Institute

Question 14

On what form are the daily calibration checks recorded?

Answer 14

DD Form 2217

Question 15

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?

Answer 15

+/- 5 dB or more at 500 through 4000 Hz or +/- 10 dB at 6000 Hz

Question 16

Why do we perform audiometric monitoring?

Answer 16

Detect hearing loss at its earliest stages

Question 17

How often is the audiometer electroacoustic calibration performed?

Answer 17

Annually

Question 18

What form is used for a referral in the Hearing Conservation Program (HCP)?

Answer 18

AF Form 1672

Question 19

What is the recommended action for a worker who is unable to wear hearing protective devices (HPD)?

Answer 19

Refer to HCDC/HCC

Question 20

Who must request fitness and risk evaluations?

Answer 20

Medical provider or line management

Question 21

Which publication is used to evaluate flying personnel who exceed hearing standards for their flying class?

Answer 21

AFI 48–123

Question 22

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)?

Answer 22

10 dB

Question 23

By what amount will earplugs or earmuffs generally reduce noise levels in decibels (dB)?

Answer 23

20 dB

Question 24

What is the additional attenuation factor in decibels (dB) you can expect when earmuffs are worn in combination with earplugs?

Answer 24

3 dB

Question 25

Initial education should be accomplished for new employees who are exposed to hazardous noise no greater than

Answer 25

30 days after beginning duties in a hazardous noise area

Question 26

When employees are not complying with the wearing of hearing protection devices, document it on

Answer 26

Chronological Record of Workplace Surveillance

Question 27

Which part of the cleaning process for earplugs is the most important?

Answer 27

Air dried

Question 28

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?

Answer 28

Public Health

Question 29

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

Answer 29

temporary threshold shift

Question 30

When a standard threshold shift (STS) is found on the first 14-hours noise-free audiogram (NFA),

Answer 30

immediately follow with a second noise-free test