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
17 December 2016 Istanbul explosions Çanakkale, Hatay, Ankara, and Erzincan. 17 December 2016 Istanbul explosions On December 17, 2016, at around 21:30 (UTC+3) four masked people attacked the Peoples' Democratic Party (HDP) office in the Beylikdüzü district of Istanbul, located at a shopping mall. The attackers managed to overcome the security personnel and started a fire, which caused the explosions of the two gas tubes inside the building. One police officer and a security guard sustained minor injuries. In the same night, shots were fired by unidentified assailants at the HDP headquarters in Darıca, Kocaeli Province. Attacks towards other HDP offices across the country have