In the field of industrial activities the actual trends shows a growing need for risk assessment. Regarding the risk of explosion assessment a rough but important qualitative step was made by defining categories and levels of protection for equipments and installations together with the zone classification of areas where combustible substances can be released and accumulated. By presented methodology, in this paper are presented theoretical models for calculation of explosive atmospheres ignition probability, starting from the parameters of the low currents electrical circuit. Are also presented some future research directions and the importance / need for a finesse quantitative assessment of explosion risk by evaluation of contribution to ignition probability of explosive atmospheres, from low currents electrical installations protected by the intrinsic safety type of protection.
The purpose of this paper is to analyse the results of a new experimental method for the evaluation of energy supply of electrical circuits used in potentially explosive atmospheres, enabling a more accurate and thorough assessment of the processes. It is expected the improvement of energy transfer parameters of circuits deserving equipment used in potentially explosive atmospheres, by keeping the security level required by the technical rules in force.
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