Dust control face ventilation

The application of the controllable circulatory ventilation, especially using it with dust removal fan will play a very significant effect on decreasing dust and improving climate in the work face. 

The improved measures were applied in the fully-mechanized face, the dust removal effect of the working face was observed, as shown in Table 1 Through observation, after the 131419 working face adopted the optimized dust removal system, the efficiency of reducing dust reached 80%, while using the traditional dust removal methods, such as ventilation and dust control, could only reach about 40%, so the optimized dust removal system can better improve the working environment, and it could be more beneficial to the health of workers, and provide guarantees for the safety production of coal mine. 

Colinet, J.F., J.J. McClelland, L.A. Erhard, and R.A. Jankowski. 1990. Laboratory evaluation of quartz dust capture of irrigated-filter collection systems for continuous miners. RI 9313. USBM. 14 pp. Colinet, J.F., and R.A. Jankowski. 1997. Dust control considerations for deep-cut faces when using exhaust ventilation and a flooded-bed scrubber. SME Transactions 302 104-111. 

PERSONAL PROTECTION wear impervious protective clothing, including boots, chemical-resistant gloves, lab coat, apron or coveralls wear dust proof-safety goggles or face shields a system of local exhaust ventilation is recommended to control emissions at the source and to pre-vent dispersion into general work area if the exposure limit is exceeded, wear self-contained breathing apparatus for extra personal protection, use a P3 filter respirator for toxic particles maintain eyewash bath and quick drench facilities in work area. 

A system of local or general exhaust is recommended to keep employee exposures as low as possible. Local exhaust ventilation is preferable because it controls the emissions of the contaminant at its source, preventing dispersion of it into the general work area. For conditions of use where exposure to the dust or mist is apparent, a half-face dust/mist respirator may be worn. 

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