ISO 1999:1990
Acoustics; determination of occupational noise exposure and estimation of noise-induced hearing impairment

Standard No.

ISO 1999:1990

Release Date

1990

Published By

International Organization for Standardization (ISO)

Status

Withdraw

Replace By

ISO 1999:2013

Latest

ISO 1999:2013

Scope

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.

ISO 1999:1990 history

• 2013 ISO 1999:2013 Acoustics.Estimation of noise-induced hearing loss
• 1990 ISO 1999:1990 Acoustics; determination of occupational noise exposure and estimation of noise-induced hearing impairment
• 1975 ISO 1999:1975 Acoustics — Assessment of occupational noise exposure for hearing conservation purposes