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Flammable liquids in motion when is transporting by pipes, is mixing, pumping, filtering, agitating or by pouring them from one vessel to another can generate static charges even if the respective pipes or vessels are bonded and earthed. Also, loads may occur if the liquid is splashes and forms a mist inside the vessel (tank, container). Accumulation of static electricity can, under certain conditions, be discharge and ignite the explosive atmosphere. In the paper are presented some aspects regarding the technical...

In the paperwork are presented new aspects regarding test results of galvanic cells used in the apparatus intended for use in explosive atmospheres. In the first part of the paper was presented the explosion risk. The explosion risk involved by the presence of technical equipment in areas endangered by the presence of flammable substances is manifested through two sources of risk. The spark ignition is due to electrical equipment, electrostatic discharges and mechanical impact. The mixtures of air with flammable s...