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
2015 Tianjin explosions 2015 Tianjin explosions On 12 August 2015, a series of explosions killed 173 people and injured hundreds of others at a container storage station at the Port of Tianjin. The first two explosions occurred within 30 seconds of each other at the facility, which is located in the Binhai New Area of Tianjin, China. The second explosion was far larger and involved the detonation of about 800 tonnes of ammonium nitrate. Fires caused by the initial explosions continued to burn uncontrolled throughout the weekend, resulting in eight additional explosions on August 15. The cause of the explosions was not immediately