ABA Safety Systems & Standards 3

Question 1

According to ANSI S3.6, audiometers must be calibrated at minimum how often for a full electroacoustic calibration?

Accepted Answer

Annually

Answer

ANSI S3.6 requires full electroacoustic calibration of audiometers at least annually to ensure accuracy of output levels.

Question 2

In an industrial hearing conservation program, a standard threshold shift (STS) is defined as an average shift of how many dB at 2000, 3000, and 4000 Hz compared to baseline?

Accepted Answer

10 dB

Answer

OSHA defines an STS as an average threshold shift of 10 dB or more at 2000, 3000, and 4000 Hz relative to the baseline audiogram.

Question 3

What is the primary purpose of a baseline audiogram in an occupational hearing conservation program?

Accepted Answer

To establish a reference for detecting future noise-induced threshold shifts

Answer

The baseline audiogram serves as a reference point against which annual audiograms are compared to detect noise-induced threshold shifts.

Question 4

Which type of hearing protection device typically provides the highest attenuation for high-frequency noise in industrial settings?

Accepted Answer

Foam earplugs

Answer

Properly inserted foam earplugs typically achieve the highest NRR values and provide superior high-frequency attenuation compared to earmuffs.

Question 5

Under OSHA 1910.95, employers must make audiometric testing available to employees exposed at or above the action level within how many months of first exposure?

Accepted Answer

6 months

Answer

OSHA requires that a baseline audiogram be obtained within 6 months of an employee's first exposure at or above the 85 dBA action level.

(ABA) American Board of Audiology Practice Test

(ABA) American Board of Audiology Practice Test

ABA Safety Systems & Standards 3