Classification of ATEX zones
ATEX zones are classified according to two parameters: - the types of combustibles that may be encountered (dust or gas) - the frequency or duration during which an explosive atmosphere is likely to occur.
Warnings
- Read the technical notice before viewing the following techniques.
- It is important to fully understand the information provided in the technical notice before using this complementary information
- Mastering these techniques requires training.
- Consult a professional before attempting to perform these techniques on your own.
Classification of ATEX zones
| Explosive atmosphere | Gas type combustible substance | Dust type combustible |
|---|---|---|
| Present permanently or for long periods (more than 1000 h per year) |
ZONE 0 | ZONE 20 |
| Present occasionally (more than 10 h and less than 1000 h per year) |
ZONE 1 | ZONE 21 |
| Present accidentally (less than 10 h per year) |
ZONE 2 | ZONE 22 |
