// CODE SNIPPET

Appendix C Audiometric Measuring Instruments

OSHA 1910 General Industry > G Occupational Health and Environmental Control > 1910.95 Occupational Noise Exposure > C Audiometric Measuring Instruments

JUMP TO FULL CODE CHAPTER

This Appendix is Mandatory

In the event that pulsed-tone audiometers are used, they shall have a tone on-time of at least 200 milliseconds.
Self-recording audiometers shall comply with the following requirements:
1. The chart upon which the audiogram is traced shall have lines at positions corresponding to all multiples of 10 dB hearing level within the intensity range spanned by the audiometer. The lines shall be equally spaced and shall be separated by at least 1/4 inch. Additional increments are optional. The audiogram pen tracings shall not exceed 2 dB in width.
2. It shall be possible to set the stylus manually at the 10-dB increment lines for calibration purposes.
3. The slewing rate for the audiometer attenuator shall not be more than 6 dB/sec except that an initial slewing rate greater than 6 dB/sec is permitted at the beginning of each new test frequency, but only until the second subject response.
4. The audiometer shall remain at each required test frequency for 30 seconds (+ or - 3 seconds). The audiogram shall be clearly marked at each change of frequency and the actual frequency change of the audiometer shall not deviate from the frequency boundaries marked on the audiogram by more than + or - 3 seconds.
5. It must be possible at each test frequency to place a horizontal line segment parallel to the time axis on the audiogram, such that the audiometric tracing crosses the line segment at least six times at that test frequency. At each test frequency the threshold shall be the average of the midpoints of the tracing excursions.

Related Code Sections

Appendix C Occupational Health and Environmental Control, Audiometric Measuring Instruments

axis on the audiogram, such that the audiometric tracing crosses the line segment at least six times at that test frequency. At each test frequency ...

OSHA 1910 General Industry > G Occupational Health and Environmental Control > 1910.95 Occupational Noise Exposure > C Audiometric Measuring Instruments

1910.95 Occupational Health and Environmental Control, Occupational Noise Exposure

All audiograms obtained pursuant to this section shall meet the requirements of Appendix C: "Audiometric Measuring Instruments ...

OSHA 1910 General Industry > G Occupational Health and Environmental Control > 1910.95 Occupational Noise Exposure

Appendix D Occupational Health and Environmental Control, Audiometric Test Rooms

This Appendix is Mandatory Rooms used for audiometric testing shall not have background sound pressure levels exceeding those in Table D-1 when ...

OSHA 1910 General Industry > G Occupational Health and Environmental Control > 1910.95 Occupational Noise Exposure > D Audiometric Test Rooms

1910.95(g)(7)(iii)(C) Occupational Health and Environmental Control,

Measurements of background sound pressure levels in the audiometric test room as required in Appendix D: Audiometric Test Rooms ...

OSHA 1910 General Industry > G Occupational Health and Environmental Control > 1910.95 Occupational Noise Exposure > 1910.95(g) Audiometric Testing Program > 1910.95(g)(7) Evaluation of Audiogram > 1910.95(g)(7)(iii) > 1910.95(g)(7)(iii)(C)

1910.95(m)(2)(ii)(F) Occupational Health and Environmental Control,

The employer shall maintain accurate records of the measurements of the background sound pressure levels in audiometric test rooms ...