Standards Development

Scope

This part of ISO/IEC 80079 specifies the explosion protection requirements for the construction , testing and marking for use in Group I of Ex Equipment that may be an individual item, or be an assembly of multiple items of Ex Equipment and Ex Components forming mining machinery.

NOTE 1 The Group I designation takes account of the fact coal dust (which is a combustible dust) is expected to be present, with or without the presence of firedamp, which is predominately methane.

NOTE 2 The definition of Group I also covers mines other than coal mines that are susceptible to firedamp

NOTE 3 The term “assembly” as used in this document is not identical in meaning to the term “Equipment Assembly” as defined in IEC 60079-46.

The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) under which it may be assumed that Ex Equipment can be operated are:

temperature -20 °C to +60 °C;

pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar);

and air with normal oxygen content, typically 21 % v/v.

This part of ISO/IEC 80079 applies for Ex Equipment and Ex Components with EPLs Ma and Mb.