ISO 1999:1990
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ISO 1999:1990
6759

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 

  •  :  Withdrawn
     : 1990-01
  •  : 2
     : 17
  •  : ISO/TC 43/SC 1 Noise
  •  :
    13.140 Noise with respect to human beings

Life cycle


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