combustibles

Combustibles, or combustible materials, are substances that can undergo rapid oxidation with the release of heat and light, sustaining visible flames under suitable conditions. They can be solids, liquids, or gases and are widely used as fuels or feedstocks in residential, commercial, and industrial settings.

In fire safety, a key distinction is between flammable and combustible materials. Flammable liquids typically have flash points below 38 C (100 F), whereas combustible liquids require higher temperatures to ignite. Solids include ordinary combustibles such as wood and paper, while some powders and dusts can pose explosion risks in industrial environments.

Common examples include wood, coal, petroleum products (gasoline, diesel), natural gas, propane, ethanol, and other hydrocarbon mixtures. These substances provide energy for heating, transportation, electricity generation, and various manufacturing processes.

Handling and storage of combustibles follow safety guidelines to reduce ignition risk. This includes keeping them away from open flames and hot surfaces, using appropriate containers, labeling, proper ventilation, and separation from oxidizers. Dusts from powders like flour or grain can become explosive when suspended in air and require appropriate controls.

Environmental considerations include emissions of carbon dioxide and other pollutants from combustion, efficiency improvements, and regulatory frameworks that govern storage, handling, and fire protection in workplaces and public spaces.