Engineering environmental protection at an industrial facility

Abstract

The aim of this study is to study engineering safety at an industrial facility. The subject of the study is dangerous and harmful factors of production, which include dust and harmful gases. The objectives of the study is assessing the dispersed composition of dust, which determines the microclimate of the working area on the example of a foundry. The presence of fine dust in the air space of the workshop leads to occupational diseases, such as pneumoconiosis (silicosis), bronchitis, dermatitis, conjunctivitis. The dust dispersion assessment took into account the relationship between the particle size and the speed of movement under the action of gravitational or centrifugal forces. The granulometric composition of the provided powder sample was determined by laser diffraction, implemented on the Fritsch NanoTec “ANALISETTE 22” laser particle analyzer. Data analysis shows that almost all phases of the technological process determine the microclimate of the internal environment and in the inter-hull zone during emission dispersion. The degree of exposure depends on the dispersion and chemical composition of the dust, in particular, in the air, the dust is oxidized to form a SiO2 film. In addition, there are other harmful substances in the workshop air that can be deposited on dust particles, which makes dust more dangerous and in this case it is necessary to take into account more stringent values of maximum permissible concentrations (MPC). An increase in the SiO2 content tightens the requirements for the cleanliness of the air in the working area. In the work, on the basis of theoretical and experimental data, the most dangerous areas with the formation of industrial dust from the standpoint of environmental risk were identified, the dust dispersion was assessed, the dust collection system was finalized, and a wet cleaning system was installed.