Every decision about electrical equipment in a hazardous location starts with a sound classification. We assess where flammable gases, vapours or combustible dusts may be present, how often, and for how long — and document the result so that the right equipment is specified and installed.
A hazardous area is defined by three main criteria: the type of hazard (the gas or dust group), the auto-ignition temperature of the hazardous material (the temperature or “T” rating), and the likelihood of the hazard being present in flammable concentrations (the zone).
Getting these criteria right determines which protection concepts and equipment categories are acceptable in each part of a plant. An overly conservative classification adds cost; an under-classified area creates real ignition risk. Our role is to help you reach a classification that is defensible, practical and clearly documented.
01What’s included
- Identification of sources of release for flammable gases, vapours and combustible dusts
- Zone definition for gas (Zones 0, 1, 2) and dust (Zones 20, 21, 22) atmospheres
- Gas / dust group and temperature class (T-rating) determination
- Documentation to support Ex equipment selection, installation and inspection
02Typical applications
- Process and petrochemical plants
- Fuel storage and handling
- Facilities handling combustible dusts
- New installations, plant changes and extensions
