Document 5kY6woBjYRyG9M64xbK72JBXN

46--Safety Engineering Tables TABLE 1910 95-A MAXIMUM ALLOWABLE SOUND PRESSURE LEVELS FOR AUDIOMETER ROOMS Audiometnc Test Frequency [Hz) 500 750 1000 1500 2000 3000 4000 6000 8000 Vi-Octave Band Center Frequency (Hz) 500 800 1000 1600 2000 3200 4000 6400 8000 Sound Pressure Level (dB)* 35 35 35 37 42 47 52 57 62 %-Octave Band Cut-off Frequencies (Hz) 425- 600- 850- 1200- 1700- 2400- 3400600 850 1200 1700 2400 3400 4800 48006800 68009600 Sound Pressure Level (dB)* 37 37 37 39 44 49 54 59 64 Octave Band Cut-off Frequency (Hz) 300- 600- 600- 1200- 1200- 2400- 2400600 1200 1200 2400 4800 4800 4800 480010000 480010000 Sound Pressure Level (dB)* 40 40 40 42 47 52 57 62 67 *dB re 0 00002 N/m2 For employees assigned to work covered by (e) (2) (i) and (u) [Check latest regula tions--Ed ] (h) Within 90 days of assignment for employees newly assigned or reassigned to work covered by (e) (2) (i) and (u) of this section Preferably, the baseline audiogram should be taken before assignment (iv) Audiometnc tests shall be pure tone, air conduction, hearing threshold examination, with test frequencies including as a minimum, 500,1000, 2000,3000, 4000, and 6000 Hz and shall be taken separately for the right and left ears (v) Each employee's annual audiogram shall be examined to determine if any sig nificant threshold shift, either ear (higher threshold), has occurred relative to the base line audiogram For those employees having a baseline audiogram showing (a) Not more than 25 dB (ANS S3 6 or ISO R-389) heanng level at any test frequency, either ear, a sig 1488 nificant threshold shift relative to the baseline audiogram is a shift of 20 dB or more at any test frequency, either ear, and (b) Heanng levels that are in excess of 25 dB (ANS S3 6 or ISO R-389) at one or more test frequencies, either ear, a significant threshold shift, relative to the baseline audiogram is 10 dB or more at 500 Hz, 1000 Hz, or 2000 Hz, 15 dB or more at 3000 Hz, oi 20 dB or more at 4000 and/or 6000 Hz, either ear (vi) If a threshold shift as determined in (v) of this paragraph is present, the employee shall be retested within one month If the shift persists, then (a) Employees not having hearing protectors shall be provided such in accordance with (d) (2) of this section, (b) Employees already having hearing protectors shall be specially retrained and remstructed in accoidance with (d) (2) of this section, (c) The employee shall be notified of his (her) hearing level and provided a copy of the audio-