Abstract:

In order to further improve pertinence and effectiveness of dust explosion prevention in China, statistical researches on 67 dust explosion accidents from 2005 to 2020 were carried out, including year, region, dust type and enterprise scale, and their causes, workplaces and consequences were also studied before some preventive suggestions were put forward. The results show that metal, coal, grain and wood dust are the four main dust types that cause explosion. Number of such accidents in large and medium-sized enterprises is small, but the consequences are much more severe than those in small and micro-sized ones. And major causes of the 67 dust explosion accidents are individuals' illegal operation, imperfect ventilation and dust removal facilities, defects in safety design of equipment and facilities, and other safety accidents. In terms of sites, metal polishing workshop, dust removal system, underground mine and dust drying tower should be paid more attention to prevent explosion. Moreover, the dust types causing more than 10 deaths in explosion accidents are namely coal, metal and grain.

Key words: dust explosion accident, dust type, cause of accident, accident consequence, statistical analysis