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
December 2007 Bocaue fire December 2007 Bocaue fire On the morning of 31 December 2007 ten fireworks stores burned in Barangay Turo, Bocaue, Bulacan, causing a series explosions within the area. The fire lasted for almost an hour and caused several traffic jams in Fortunato F. Halili Avenue and the North Luzon Expressway. Bocaue is well known in the Philippines for its fireworks production. However, because of this, the town is also susceptible to large fires every New Year. In 1988, the town was rocked by earth-shaking blasts from exploding makeshift factories that produce firecrackers and other pyrotechnic devices. Another incident in 2004 even