Gruvdrift och mineraler

This document specifies the safety requirements for rock drill rigs and rock reinforcement rigs designed for the following underground or surface operations: a) blast hole drilling; b) rock reinforcement; c) drilling for secondary breaking; d) dimensional stone drilling; e) mineral prospecting, e.g. utilizing core drilling or reverse circulation; f) water and methane drainage drilling; g) raise boring. NOTE Rigs can be designed for more than one of the operations above. See ISO 18758-1 for vocabulary. This document is also applicable to earth-moving machinery as defined in ISO 6165, modified to become a rock drill rig or rock reinforcement rig. This document is not applicable to the following machines: drill rigs for soil and rock mixture; (geothermal drill rigs, water well drill rigs, water jet drill rigs, micro pile drill rigs; surface horizontal directional drill rigs (HDD) as defined in ISO 21467), kelly drill rigs (and casing drivers); cable tool drill rigs; pre-armouring machines; sonic drill rigs; shaft sinking drill rigs; crane attached drill rigs; drill rigs on derricks; scaling machines. This document deals with the significant hazards, hazardous situations or hazardous events, as listed in Annex E, relevant to rock drill rigs and rock reinforcement rigs (see ISO 18758‑1), when they are used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer. This document is not applicable to rigs manufactured before the date of its publication.

This part of ISO/IEC 80079 specifies the explosion protection requirements for the construction, testing and marking for Group I of Ex Equipment that can 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 can 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 a volume fraction of 21 %. This part of ISO/IEC 80079 applies for Ex Equipment and Ex Components with Explosion Protection Levels (EPLs) Ma and Mb.

This document supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this document conflicts with a requirement of IEC 60079-0, the requirement of this document takes precedence.

This document is not applicable to tunnelling situations where firedamp or coal dust might be produced if such situations are not classified as mines. However, it might be appropriate to use this document as guidance for those situations.