Meeting the ATEX 94/9/EC Directive
The ATEX Directive specifies a number of Conformity Assessment Procedures and the circumstances when they must be used.
The procedures are:
- EC type examination,
- Quality assurance,
- Verification modules,
- Internal Control of Production.
| Equipment Category |
Definition | Protection Method | Existing equivalent IEC Designation |
|---|---|---|---|
| M1 | Equipment intended for mining use and is required to remain functional in the presence of an explosive mixture | 2 levels of protection, or safe under 2 independent faults | Group I |
| M2 | Equipment intended for mining use but is intended to be de-energised in the event of an explosive atmosphere. | 1 level of protection based on normal operation | Group I |
| 1G | Non-mining equipment for use in Zone 0 | 2 levels of protection, or safe under 2 independent faults | Group II, Zone 0 – gas |
| 1D | Non-mining equipment for use in Zone 0 | Group II, Zone 20 – dust |
|
| 2G | Non-mining equipment for use in Zone 1 | 1 level of protection based on frequent disturbances; or equipment faults | Group II, Zone 1 – gas |
| 2D | Non-mining equipment for use in Zone 1 | Group II, Zone 21 – dust |
|
| 3G | Non-mining equipment for use in Zone 2 | 1 level of protection based on normal operation | Group II, Zone 2 – gas |
| 3D | Non-mining equipment for use in Zone 2 | Group II, Zone 22 - dust |
