Reference number
ISO 1999:1990
© ISO 2025
ISO 1999:1990
Acoustics — Determination of occupational noise exposure and estimation of noise-induced hearing impairment
Edition 2
1990-01
Withdrawn
Withdrawn (Edition 2, 1990)

Abstract

Prescribes a practical relation for these quanitities expressed as A-weighted noise level in dB and duration of exposure within a normal working week (40 hours) and the percentage of personnel that is to be expected to obtain a raised hearing threshold of 25 dB or more as a result of this exposure, averaged from 500, 1000 and 2000 Hz.

General information

  • Status
     : Withdrawn
    Publication date
     : 1990-01
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 2
    Number of pages
     : 17
  • Technical Committee :
    ISO/TC 43/SC 1
    ICS :
    13.140 
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