Industrial processes related to oil, gas, transportation of explosive minerals, as well as their processing, is fraught with potential dangers of a volatile situation. Opportunity explosion high in the areas of oil storage, it is also present in the technological areas, warehouses, in open areas (eg, oil loading facility). Explosive atmospheres occurs when occurrence of accidents, breach of rules and technological conditions, in case of damage to equipment and piping. In such circumstances, the value of reliable communications equipment is difficult to overestimate: Timely action and Alert staff prevent huge losses and possible casualties. Accordingly, such equipment to meet advanced security requirements. Basic principles of explosion the same in all countries.
On the basis of international standards for explosion protection placing communication technology virtually identical claims based on the recommendations of iec - International Electrotechnical Commission. She has also developed a testing procedure - the so-called scheme IEC-Ex, used in the study of communication technology in the leading certification centers in the U.S. and Europe. The most common worldwide standards explosion of communications technology - en 50020 European Committee for Electrotechnical Standardization cenelec and ANSI/UL-913 American National Standards Institute include testing of electronic communication technology is on this procedure. These standards are recognized in most countries, for example, in many countries of the European Union for use of communication equipment in hazardous environments is the availability of sufficient Certificate en 50020, because in these countries, national standards for explosion completely coincide with one of these international standards. Ex code indicates that the labeled equipment has Protected against the explosion and the next below the symbol shows the type of explosion, by which is achieved by apparatus.
