ISO/TC 43/SC 1
| Project No. | ISO 1999:1990 |
|---|---|
| Title | <p>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.</p> |
| Registration number (WIID) | 6759 |
| Scope | <p>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.</p> |
| Status | Atcelts |
| ICS group | 13.140 |