Of all types of dust the most harmful one is silica. Quartz is silicon dioxide and is found in sand and in the majority of natural rocks. It is also in demolition debris and many building materials. The quartz content varies by type (natural) stone or composite building material. The higher the quartz content of the material, the more silica dust may be released.
Silica dust is very fine grained, which is difficult or impossible to see. The presence of quartz-containing materials alone is not the main problem, but the inhalation of silica dust released. Silica dust is produced mainly from the deposit of sand, the handling of waste, and mechanical processing such as sorting and crushing of construction and demolition waste and debris. Measures to prevent the release of quartz dust in the industry, can often not be realized.
Silica dust consists of very small insoluble particles that enter deep into the lungs, where they cause formation of connective tissue. This is also called pulmonary fibrosis or pneumoconiosis (or silicosis). The lung tissue can absorb less oxygen and becomes less elastic. That means that someone is short of breath and stuffy during exercise. The more dust someone has inhaled, the more damage. And the damage is beyond repair. The damaging of the lungs continues even if the person is no longer exposed to quartz dust. The quartz is then in fact still present in the lungs. The insidious is that most people initially do not take notice; on the long run shortness of breath and other effects of lung disease are beginning to show.
To protect workers from exposure BMAir has a great variety of systems which can be mounted on any type of construction machine. The filter pressurization system is mounted on the cab roof, fender or deck of the machine and filter dust particles, gases and vapors from the air before it is fed into the sealed cab. The corresponding control checks for proper operation and longevity of the filters.
The systems provide by means of a slight overpressure in the cabin and the right filters for the supply of clean breathable air in dusty and contaminated work areas. This adds to the improvement of working conditions and the health of the driver.
Construction machinery today are mostly air-conditioned and equipped with expensive electronic components which are very sensitive to dust, resulting in expensive repairs. Because the system ensures that the cabin remains clean this can be a substantial savings on repair.
The leading BMAir technology not only ensures reliable compliance with statutory health and safety guidelines, but also increase productivity and profitability through improved working conditions and reduced absenteeism.