Tongchai Jithan. Designing the dust control system for cutting tile mixed with asbestos . Master's Degree(Industrial Hygiene and Safety). Mahidol University. : Mahidol University, 2003.
Designing the dust control system for cutting tile mixed with asbestos
Abstract:
This research aimed to study the efficiency of one dust control system in cutting tile mixed with asbestos. The dust control machine was designed to be portable. It consisted of a cyclone set to collect the large dust. There were three cyclones for axial entry of 100 millimeters width. The filter for collecting the small dust was Height
Efficiency Particle Air (HEPA) changeable type of filter. The cutting set consisted of a motor angle grinder and a four inch fiber cutting blade with hood and flexible pipe.
The experiment for efficiency of the dust control system was divided into two parts. The first part was to test the size and quantity of dust by collecting data from the
cutting of the tile as primary data for designing the dust control system. The second part was to test the efficiency of the control system by fixing the cutting tile distance and the speed, time and angle of the blade. Under the second part, four factors were tested for efficiency. The first factor was the quantity of total dust produced by cutting the tile. The second factor was the quantity of dust that could not be sucked into the system while operating the dust control system. The third factor consisted of the quantity of dust that could not be collected in the system while using the dust control system. These three factors concerned the chamber. The fourth factor was composed of the quantity of dust that could not be sucked into the system and could not be collected by the cyclone and filter. All four factors were tested for efficiency at various fixed distances, speeds, times and angles of the cutting blade. Results showed that the dust collecting efficiency of the control system almost met the value of the objective. The efficiency of the dust control system depends on the quantity of dust, distance and the speed, time and angle of the blade cutting the cement tile."