Hazardous Area Classification

Hazardous area classification is the foundation of compliance with ATEX / DSEAR and IEC standards. It:

Identifies areas where flammable gases, vapours, or dusts may form explosive atmospheres
Defines zones (0, 1, 2 for gases and 20, 21, 22 for dusts) to guide equipment selection
Provides the baseline for safe design, equipment installation, and ongoing inspections

Without accurate classification, compliance, safety, and risk control cannot be reliably achieved.

CSI provides robust, defensible hazardous area classification reports, including:

Site surveys and data collection to assess hazardous substances and conditions
Zone classification drawings and supporting calculations
Clear, practical documentation to support design, installation, and operation
Updates and reviews in line with process or site changes

Our classifications give you the clarity and evidence you need to stay compliant and safe.

We carry out hazardous area classification projects across a wide range of industries:

Oil, gas, and petrochemical sites
Chemical and pharmaceutical manufacturing plants
Food, beverage, and agricultural facilities
Energy, utilities, and waste management sites

From small sites to complex global facilities, CSI delivers consistent, accurate classifications.

By working with CSI for hazardous area classification, you gain:

Accurate, standards-based classification reports you can rely on
Clear documentation to support safe design, installation, and inspection programmes
Reduced risk of non-compliance, incidents, and costly rework
Support from experienced consultants trusted worldwide

CSI gives you the foundation for safe, compliant, and efficient hazardous area operations.