What Are The Different Hazardous Area Classifications?
There is a risk of fire and explosion if any electrical equipment is positioned in a location where it may come into contact with flammable liquids, gases, or vapors, ignitable fibers, or flying objects.
Hazardous regions or locales are those like the ones indicated above that may be at risk from explosive atmospheres. Depending on the nation, there are two ways used to classify hazardous areas. The class/division system is employed in North America. The zone system has been adapted in Europe, North America, and other parts of the world.
These systems would establish the necessary equipment standards and protective mechanisms. For the purposes of this study, we'll concentrate on the zone system's application on a global scale.
The Zone System: What is it?
According to the Zone system, hazardous area classifications are organized by Zone, which can be further divided into gas/vapors/mists and dust. The system is further broken down into groups and subgroups for gas/dust atmospheres.
There are three zones altogether for gases, vapors, and mists:
|
Zone |
Level of Hazardous Material Risks |
|
Zone 0 |
Where there is a presence of flammable gases or vapors that occur continuously or for long periods of time. |
|
Zone 1 |
Where there is a presence of flammable gases or vapors that are generated during regular operational conditions. |
|
Zone 2 |
Where presence of flammable gases or vapors are not likely to occur during regular operational conditions or, if they do occur, will exist only for a short period. |
|
one |
Level of Hazardous Material Risks |
|
Zone 20 |
Where there is a presence of combustible dusts or ignitable fibers/flyings that occur continuously or for long periods of time. |
|
Zone 21 |
Where there is a presence of combustible dusts or ignitable fibers/flyings that are generated during regular operational conditions. |
|
Zone 22 |
Where presence of combustible dusts or ignitable fibers/flyings are not likely to occur during regular operational conditions or, if they do occur, will exist only for a short period. |
|
Group |
Types of Hazardous Material and Location |
|
Group I |
Underground mines fall under this group and with firedamp present |
|
Group II |
All other hazardous areas that do not fall under Group I and are grouped for Explosive Gas This group is further divided into 3 categories based on the type of gas: Group A Group B Group C |
|
Group III |
This group is to categorize Explosive Dust and is further divided into 3 categories based on the type of dust: Group A Group B Group C |
Conclusion
Understanding hazardous area categorization criteria is crucial if you want to employ the right tools in the right zones. Any hazardous workplace should have safety as its first concern. Choose a partner for your needs in hazardous area products that you can rely on and trust.
To meet your needs for hazardous area classification, Supermec provides a wide selection of explosion-proof devices, including explosive proof lightning and explosive proof junction boxes. All of our goods are customized to follow the exact rules and regulations set forth by the sector. To learn more about our explosion-proof products, get in touch with our helpful sales staff at bwzm18@ledbenweilighting.com or give us a call at +86 18588981645. As an alternative, you can browse our whole inventory of explosion-proof products for different hazardous area classifications at your convenience on our e-commerce site.
