Hot work

A process which produces sparks is called hot work. Welding, plasma cutting, and grinding produces showers of sparks like fireworks. Sparks like to bounce along the floor, under shelves, and into drifts of sawdust and dust bunnies, which ignite and the flames climb up behind the shelves. Flammable vapors of solvents, fuels, and paints are often heavier than air and sit on the floor, too. There is a red metal fire safety trash can with a lid which you should use for oily paper towels, which can heat up as they dry in a day and then self-ignite. At the very least, sparks which land on surfaces burn paint and melt plastics. Keep control of which direction you are sending showers of sparks. Know what other work is going on in the space, like cleaning oily parts and painting, and make sure your hot work is compatible with it.