| Limiting Oxygen Concentration (LOC) is the minimum oxygen level in a gas mixture at which a substance, such as a flammable gas, vapor, or dust, can ignite or sustain combustion. If the oxygen concentration is reduced below this threshold, combustion cannot occur, even in the presence of an ignition source and fuel. LOC is crucial for fire and explosion prevention in industries dealing with flammable materials, such as chemical plants, oil refineries, and manufacturing facilities. It is widely used in designing inerting systems, where gases like nitrogen or carbon dioxide are introduced to lower oxygen levels and prevent ignition. Ensuring that oxygen concentration stays below the LOC enhances industrial safety, especially in environments where combustible substances are handled. Additionally, LOC is an essential parameter in regulatory standards set by organizations like OSHA and NFPA to minimize fire hazards. By controlling oxygen levels, industries can maintain safer working conditions and prevent catastrophic accidents. |
