Some workplace fire hazards are obvious. You toss a match into a pile of dry sawdust, and you get a fire. Other hazards are harder to recognize. Consider the chemical reactions which can result in fires and explosions without an ordinary source of ignition such as spark or heat. That's how an explosion occurred in a wastewater treatment plant at an oil refinery. It caused burn injuries for five workers. The crew was getting ready to repair and coat the interior walls of the tank. Using a chain, they hoisted the tank cover about six inches (15 centimeters) so they could check […]