For an employee undergoing audiometry, the following variables need to be identified before obtaining the HTLs, by a competent person: audiometric testing, in respect of—
| (a) |
occupational-acoustic history; |
| (b) |
otoscopic examination; and |
| 9.1 |
Occupational-acoustic History |
| 9.1.1 |
The occupational-acoustic history is conducted to verify— |
| (a) |
current and previous occupational exposure; |
| (b) |
protective measures taken; |
| (c) |
previous audiogrammes; |
| (d) |
noise-free preparation time for the current test; and |
| (e) |
other significant history which can affect hearing: medical history, surgical and trauma history, genetic predisposition and social factors. |
| 9.2 |
Otoscopic Examination |
| 9.2.1 |
The otoscopic examination is conducted on an employee before the HTLs are obtained to ensure that the test results are not influenced by conductive components. |
| 9.3.1 |
The competent person: audiometric testing must ensure that the employee undergoing the audiometry understands the instructions given. |
Basic Conditions of Employment Act, 1997
