Brush discharge plastics. The ability of an electrical discharge to cause an explosion in flammable atmospheres is measured by the "effective energy" of the discharge. The effective energy of brush discharges is 10-20 mJ, much larger than that of corona discharges 0.1 mJ. Therefore, brush discharges are considered an explosion hazard, while corona discharges are not. Brush discharges can occur from charged insulating plastics (for example polythene) to a conductor. Brush discharge A brush discharge is an electrical disruptive discharge similar to a corona discharge that takes place at an electrode with a high voltage applied to it, embedded in a nonconducting
Wastewater discharge standards in Latin America that produces a contamination on the water. In the case of the discharge over sewer systems the regulation is under the Chapter IV. It's stated that every company must agree with the company that provides the service of recollection of wastewater, the limits of discharge. The limits presented in this article, are those for new companies and for companies in process of identification of the type of body water that the company will discharge. Case description In August 2003, all the mining producers working in the city of Potosí must discharge their waste waters to a specific dike; otherwise they