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