Standard

ISO 1999:1990

[Superseded]

Acoustics — Determination of occupational noise exposure and estimation of noise-induced hearing impairment

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.

Published: 18/01/1990

Pages: 17

Content history

ISO 1999:2013

[Current]

AS ISO 1999-2003

[Obsolescent]

ISO 1999:1975

[Superseded]

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