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ANALYSE OF EXPLOSION CHARACTERISTICS OF WOOD DUST CLOUDS IN DEPENDENCE OF THE PARTICLE SIZE DISTRIBUTION
Abstract
Many processes involving dusts, suspended or accumulated, have the potential to lead to fire, explosion or decomposition in the presence of oxygen and an ignition source. The risk of dust explosions increases as more and more products take the form of dusts or require the use of dusts during manufacture. In spite of extensive research and development to prevent and mitigate dust explosions in the process industries, this phenomenon continues to represent a constant hazard to industries including manufacturing, using and handling of combustible dust material. The purpose of explosion preventing and protection measures is to prevent explosion occurrence, by eliminating or avoiding the conditions leading to explosions. The dust explosion and combustion characteristics are required to be known, in order to suitably choose and draw up the preventive and protection measures. Once known, the protection/prevention measures can be correlated with the safety characteristics. The aim of this paper is to analyze of explosion and combustion characteristics of wood dust clouds in dependence of the particle size distribution. The paper shows the importance of knowing the explosive characteristics of dusts and identifying the factors of influence in obtaining the results.
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Paraian M., Gaman G.A., Lupu C., Ghicioi E., Burian S., Vatavu N., Ionescu J., Jurca A., Friedmann M., Paun F., Magyari M., Lupu L., Moldovan L., Muntean Berzan F., Csaszar T., Vlasin N., Darie M., (2014), Guidelines for evaluation of systems and personal protective equipment on the risk of explosions in environments with potentially explosive atmospheres (in Romanian), INSEMEX Publisher, Petrosani, Romania.;
Directive 2014/34/UE OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 26 February 2014 on the harmonization of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres;
Directive 1999/92/EC of the European Parliament and of the Council of 16 December 1999 on minimum requirements for improving the safety and health protection of workers potentially at risk from explosive atmospheres. Official Journal No. L 023, 2000-01-28, 57-64;
ATEX-Guidelines: Guidelines on the Application of Council Directive 2014/34/UE OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 26 February 2014 on the harmonization of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres, 3rd EDITION � May 2020.
SR EN 14034-1+A1:2011, (2011), Determination of explosion characteristics of dust clouds - Part 1: Determination of the maximum explosion pressure pmax of dust clouds (Romanian).
SR EN 14034-2+A1:2011, (2011), Determination of explosion characteristics of dust clouds - Part 2: Determination of the maximum rate of explosion pressure rise (dp/dt)max of dust clouds (Romanian).
SR EN 14034-3+A1:2011, (2011), Determination of explosion characteristics of dust clouds - Part 3: Determination of the lower explosion limit LEL of dust clouds (Romanian).
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Jurca A., Ghicioi E., Paraian M., Burian S., Darie M., Sicoi S., Paun F. (2005), Implementation and carrying out of laboratory test stands required for conformity assessment of equipment intended for use in potentially explosive atmospheres generated by combustible dusts - IRECEEX, INSEMEX Petrosani, (Romanian)C 43/2005.
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