Explosion proof situations are usually classified based on the potential explosive nature and degree of danger. The following are some common classifications of explosion-proof situations:
Regional classification:
Zone classification: Areas are classified into different “Zone” levels based on the possible presence of explosive gases, vapors, or dust, such as Zone 0, Zone 1, and Zone 2 (for gases, vapors) or Zone 20, Zone 21, and Zone 22 (for dust).
Explosion level classification:
Gas groups: Gas explosion levels are divided into different groups, such as IIA, IIB, and IIC, which represent the explosive properties and hazard levels of the gas.
Dust group: Dust is also classified into different groups based on its explosive properties.
Classification of hazardous properties:
High risk areas: areas with extremely high concentrations of combustible gases or dust, such as certain areas of chemical factories.
Medium hazardous areas: There are combustible gases or dust present, but the concentration is low and the likelihood is low.
Low risk area: usually refers to a place where there are no combustible gases or dust present.
Equipment classification:
Explosion proof level: Equipment and tools may have an explosion-proof level, such as the Ex mark, indicating that they can be used in explosive environments.
These classifications help determine the explosion-proof measures and equipment to be used in different environments. Safety measures are crucial in any potentially explosive environment.