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 explosions occurred, citing the fragility of the ground or the ruined buildings around. The remaining 260 tons of propene inside the damaged pipes was vented out completely by Monday from both of their input and output points. Nitrogen gas was put into pipes ensuring all propene had been removed, a move which had been done earlier by the CPC. The Environmental Protection Administration also had dispatched personnel to Kaohsiung to assist local government in air pollution monitoring. On 5 August, the Kaohsiung District Prosecutor's Office issued the death certificates of two missing firefighters who had fought the fires caused