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close this bookAsbestos Overview and Handling Recommendations (GTZ, 1996)
close this folderPart II. Asbestos
close this folder5. Occupational safety measures in handling Asbestos
View the document(introduction...)
View the document5.1 Suitable fiber binding
View the document5.2 Wet operations
View the document5.3 Enclosure
View the document5.4 Vacuuming of dust near the point of origin
View the document5.5 Limiting the areas in which Asbestos dust may arise
View the document5.6 Personal respiratory protection
View the document5.7 Regular and thorough cleaning of workplaces
View the document5.8 Dust-free waste collection and landfill disposal

5.1 Suitable fiber binding

Since fine Asbestos particulates arise with every type of mechanical processing of Asbestos containing materials, it is necessary to reduce the release of fibers as far as possible by suitably binding them in the matrix. This can be achieved by selection of a suitable binding agent or through the lowest possible fiber amount (fiber number / unit weight).

Due to the very weak binding of sprayed Asbestos, it is one of the most hazardous applications. In most countries sprayed Asbestos is no longer permitted to be used. A relatively strong fiber binding is found in all Asbestos containing flat packing materials, in which the fibers are bound with elastomeres. In the relevant Technical Guidelines for Asbestos (Technischen Richtlinie fur Asbest, TRGS 517), it is therefore assumed that the exposure is below the limit when working with pressing and cutting tools. Other examples of Asbestos containing materials with relatively strong fiber binding are:

- grouting compounds, which are used in the electronic industry for the manufacturing of collectors

- yarns or bands impregnated with rubber or artificial resin, which are further processed by wrapping, calendering, pressing and hardening.