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
Cleveland Clinic fire of 1929 Cleveland Clinic fire of 1929 The Cleveland Clinic fire was a major structure fire at Cleveland Clinic in Cleveland, Ohio on May 15, 1929. It started in the basement of the hospital and it was caused by nitrocellulose x-ray film that ignited when an exposed light bulb was too close to the film. The fire generated poisonous gas and two separate explosions. The fire claimed 123 lives, including that of one of the clinic's founders, Dr. John Phillips. Policeman Ernest Staab was killed by the gas while rescuing 21 victims. The Cleveland Clinic is a non-profit Ohio corporation, founded in