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The presence of flammable and/or combustible substances in various industrial production processes generates in most cases potentially explosive atmospheres, which transforms a regular work environment into an explosion risk area, directly influencing the way in which equipment intended to be used in these areas is designed, installed and maintained. In areas where potentially explosive atmospheres may form due to the presence of flammable and/or combustible substances, technical equipment must be used whose casin...

This study investigates experimentally the influence of dust thermal conductivity on the maximum surface temperature of Ex equipment operating under dust layer conditions at a fixed dissipated power of 3 W. Experiments were conducted using a purpose-built resistive test sample, designed and manufactured at INCD INSEMEX, tested with two dust materials representing boundary conditions of thermal behaviour: vermiculite, selected as a worst-case insulating material, and Portland cement dust, selected for its industria...