Compensation for Occupational Injuries and Diseases Act, 1993 (Act No. 130 of 1993)
Circular Instruction No. 171 - Determination of Permanent Disablement resulting from Exposure to Excessive Noise and Trauma in Industry
5. Calculation of Permanent Disablement
|5.1||The better of the two diagnostic audiograms will be used: Ensure that all documentation (4) is present and correct.|
|5.2||Calculate (from PLH tables - Annexure A) a PLH for each of the following frequencies: 500, 1000, 2000, 3000 and 4000 Hz (Air conduction results to be taken except if specified otherwise by the medical officer).|
|5.3||Sum the values for each frequency to obtain the PLH.|
|5.4||If a baseline PLH is available this value is subtracted from the PLH obtained from 5.3.|
|5.5||If a baseline PLH is unavailable the PLH in 5.3 is taken as the value from which permanent disability will be calculated.
|5.6||Permanent Disablement is calculated by halving the value of the PLH obtained in either: 5.4 (if a baseline PLH is available) or 5.5 (if a baseline PLH is unavailable).|
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