Ceramic fibers themselves are not inherently flammable and do not cause fires or explosions. However, they can be a contributing factor in industrial processes if they accumulate in large amounts and come into contact with an ignition source, such as electrical sparks or high heat. The risk of fire or explosion increases if the fibers are mixed with other combustible materials. Proper handling, storage, and disposal of ceramic fibers, along with maintaining a clean work environment, are crucial to minimize such risks.