Explosion protection |
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In the 19th century, electrical equipment was introduced into industry and households. Immediately afterwards, because of the methane and coal dust occurring in coal mines, the basics of electrical explosion protection were developed. The advantages of electricity were so convincing, that intensive work was carried out to find the means of reliably preventing contact between an explosive atmosphere and ignition sources - originating from the use of electrical equipment - and thus preventing explosions. Explosion An explosion is defined as a sudden reaction involving a rapid physical or chemical oxidation reaction or decay generating an increase in temperature or pressure or both simultaneously. The most familiar reactions are those of flammable gases, vapours or dusts with the oxygen contained in the air. Basis for an explosion As a rule, for explosions to happen in atmospheric air, three factors have to be present at the same time:
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