Lasing: Bonding procedure, aerosol forming.
Dangers and health risks resulting from lasing processes.
During lasing processes - very much comparable to welding - several dangerous gaseous substances and particles develop. These substances form out of:
- Basic and additive material,
- coatings and
- general impurities.
Due to the high temperatures during the lasing process these substances form through different physical and/or chemical processes:
- Evaporation,
- condensation,
- oxidation,
- corrosion,
- pyrolysis and
- burning.
Particles which develop during lasing are very fine and homogenous and are exclusively alveolar. That means they penetrate even the smallest pulmonary alveoles. Substances which develop during lasing have got different effects on the human body; iron oxide, for example, can lead to increased stress on the lungs. Another negative effect may even be obstructive bronchitis or siderosis. General health hazards are:
- Stress on pulmonary function
- deposit of dust in the lungs
- siderosis
- aluminosis
Protective measurements and air filtration
Effective air filtration and cleaning is the only possibility to remove contaminants out of the respiratory aera of a worker and the workshop as a whole. Furthermore, facilities and workshops are protected against pollution of smoke particles, which very often form a greasy layer on surfaces. Air pollution control systems need special filters for extraction of lasing dust. Mostly surface-type filters such as the "TUBE"-technology is applied due to the nature of the dust.
