|Asbestos Overview and Handling Recommendations (GTZ, 1996)|
|Part II. Asbestos|
|5. Occupational safety measures in handling Asbestos|
If the required purity of air at the workplace cannot be maintained through technical or operational means, the workers at the workplace must wear respiratory protection. This basically applies when:
1. The particulate concentration exceeds the guideline value of 1x106 fibers/m³.
2. The limit of 0.25 X106 F/m³ is exceeded, and due to the process or the spatial and climatic conditions, elevated intake of fine Asbestos dust may occur via the lungs.
The wearing of respiratory protection should not be a permanent protection measure.