Electrical equipment in hazardous areas the participation of operations, maintenance, safety, electrical and instrumentation professionals, the use of process diagrams and material flows, MSDS and any pertinent documents, information and knowledge to determine the hazards and their extent and the countermeasures to be employed. Area classification documentations are reviewed and updated to reflect process changes. Soon after the introduction of electric power into coal mines, it was discovered that lethal explosions could be initiated by electrical equipment such as lighting, signals, or motors. The hazard of fire damp or methane accumulation in mines was well known by the time electricity was introduced, along with the
2014 Kaohsiung gas explosions the area looking for survivors. Heavy construction equipment was brought to the blast site to begin removing debris from the street. Schools and offices were closed on that day and residents were asked to leave their houses to smooth out the search and rescue operations. By afternoon, hundreds of people who fled the explosion scenes had returned home after houses around the explosion areas had been declared safe by the city spokesman. They confirmed that no more explosions could happen and that all of the fire had been put out. Traffic restrictions were put in place on Sanduo, Guanghua, Yixin,