Original scientific paper
Research of fir-wood dust concentration in the working environment of cutters
Dubravko Horvat
Ankica Čavlović
Željko Zečić
Marijan Šušnjar
Ivan Bešlić
Velimira Madunić-Zečić
Abstract
This paper shows the results of measurement of daily exposure of cutters to respirable particles and total fir-wood dust during cutting and processing of dead standing fir-trees. The separators of non-respirable fraction (cyclones) are designed so as to imitate the separation of respirable particles in the respiratory system of a healthy adult person, with a medium efficiency (50 %) with aerodynamic diameter of 5 μm. The mean value of mass concentration of total fir-wood dust was (1.29 ± 0.419) mg/m3 and of respirable fraction (0.564 ± 0.154) mg/m3. The results of this research show that no measured value (N = 26) in cutting and processing fir-trees exceeds the Croatian limit values (maximum permissible concentrations) for wood dust of softwood broadleaved species and conifers.
Keywords
firwood; wood dust; mass concentration; cutter; working environment
Hrčak ID:
3992
URI
Publication date:
15.12.2005.
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