Grounding and bonding practices for hazardous areas

摘要

Within certain industrial facilities, there are areas of atmospheric conditions that may erently harmful to humans. If an ignition source is present within those areas, an explosion or fire can take place, causing damage to equipment, and injury or death to personnel. Flammable gases or vapors, combustible dusts, or ignitable fibers and flyings produce hazardous locations and represent distinctly different fire or explosion hazards. Such conditions exist in many places, but the ignitable or combustible mixtures are usually not present in quantities that can create a fire or explosion hazard. These ignitable and combustible materials must exist in concentrations high enough to warrant a hazardous location.