BS EN ISO/IEC 80079-38:2016+A1:2018
$198.66
Explosive atmospheres – Equipment and components in explosive atmospheres in underground mines
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 62 |
This part of ISO/IEC 80079 specifies the explosion protection requirements for the design, construction, assessment and information for use (maintenance, repair, marking) of equipment that may be an individual item or form an assembly.
This includes machinery and components for use in mines susceptible to explosive atmospheres of firedamp and/or combustible dust. The standard atmospheric conditions (relating to the explosion characteristics of the atmosphere) under which it may be assumed that equipment can be operated are:
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temperature -20 °C to +60 °C;
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pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and
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air with normal oxygen content, typically 21 % v/v.
This part of ISO/IEC 80079 applies for equipment and components according to EPL Mb to be used in explosive atmospheres containing firedamp and/or combustible dust.
NOTE 1 In some countries, there might be differences according to the classification, e.g. Mb is similar to category M2 in the European Union.
For equipment and components according to EPL Ma, the requirements of this standard and of ISO 80079-36 and IEC 60079-0 apply.
NOTE 2 A standard with additional requirements for EPL Ma is under preparation.
It is necessary to take account of external conditions to the equipment which may affect the hazard and the resultant protection measures. These measures may include ventilation, gas detection or gas drainage.
This part of ISO/IEC 80079 also deals with the prevention of ignitions of explosive atmospheres caused by burning (or smouldering) of combustible material such as fabric fibres, plastic ”O”-rings, rubber seals, lubricating oils or greases used in the construction of the equipment if such items could be an ignition source. For example, the mechanical failure of rotating shaft bearings can result in frictional heating that ignites its plastic cage, plastic seal or lubricating grease.
Detailed requirements and test procedures for the fire protection of conveyer belts are not part of this part of ISO/IEC 80079.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 5 | Annex ZA(informative)Relationship between this European Standard and the essential requirements of Directive 2014/34/EU aimed to be covered |
| 7 | Annex ZB(informative)Relationship between this European Standard and the essential requirements of Directive 2006/42/EC aimed to be covered |
| 9 | English CONTENTS |
| 12 | FOREWORD |
| 14 | INTRODUCTION |
| 16 | 1 Scope 2 Normative references |
| 17 | 3 Terms, definitions and abbreviated terms |
| 21 | 4 Requirements for equipment (machines) and components 4.1 General |
| 22 | 4.2 Ignition hazard assessment 4.2.1 Formal analysis 4.2.2 Assessment for equipment-group I, EPL Mb 4.2.3 Establishing the maximum surface temperature 4.2.4 Dust deposits and other material in the gap of moving parts |
| 23 | 4.2.5 Ignition hazard assessment report 4.2.6 Ignition sources 4.3 Non-electrical equipment and components 4.4 Electrical equipment and components 4.4.1 General |
| 24 | 4.4.2 Electrical equipment protection 4.4.3 Over-current protection |
| 25 | 4.4.4 Earth-fault protection |
| 26 | 4.4.5 Mechanical protection of live parts 4.4.6 Electric cables that are part of the equipment |
| 27 | 5 Additional requirements for specific equipment and components 5.1 Cutting and stripping equipment 5.1.1 General 5.1.2 Machines with cutting picks |
| 28 | 5.1.3 Stripping machines 5.2 Rope haulages for level and inclined transport 5.3 Fans 5.3.1 Ventilating fans for use in underground parts of mine |
| 30 | 5.3.2 Other fans 5.4 Internal combustion engines Table 1 – Combination of materials |
| 31 | 5.5 Air compressors 5.6 Drilling equipment and components |
| 32 | 5.7 Brakes 5.7.1 Brakes used only for stopping in emergency 5.7.2 Service brakes (including friction brakes and fluid based retarders) 5.7.3 Parking brakes 5.8 Traction batteries, starter batteries and vehicle lighting batteries |
| 33 | 5.9 Optical fibres used on machines and electromagnetic radiation from components on machines 5.9.1 External pipes/optical fibres 5.9.2 Radio-frequency radiation from equipment 5.10 Gas monitoring systems |
| 34 | 6 Fire protection 6.1 General 6.2 Non-metallic materials 6.3 Hydraulic and pneumatic equipment |
| 35 | Table 2 – Limit values for hydraulic fluids |
| 36 | 6.4 Requirements for cable-reeled equipment 6.4.1 General 6.4.2 Special requirements 6.5 Fire prevention on electric cables that are part of the machine 6.6 Conveyor belting |
| 37 | 7 Information for use 7.1 Signals and warning notices 7.2 Instructions 7.2.1 Information on use 7.2.2 Information on maintenance and repair 8 Marking |
| 39 | Annexes Annex A (informative) Example of an ignition hazard assessment for a conveyor belt intended for use in a coal mine A.1 General A.2 EPL and intended use of the equipment A.3 Construction and description of the equipment |
| 40 | A.4 Assessment Tables Table A.1 – Example of an ignition hazard assessment for a mining conveyor, EPL Mb (1 of 2) |
| 43 | Annex B (informative) Example of an ignition hazard assessment for a shearer loader intended for use in a potentially explosive atmosphere of a coal mine B.1 General B.2 EPL and intended use of equipment B.3 Construction/description of the equipment with regard to ignition protection |
| 44 | B.4 Ignition control and monitoring system B.5 Compliance with the basic methodology and requirements in ISO 80079-36 Figures Figure B.1 – Layout and construction of the coal face shearer loader |
| 45 | B.6 Ignition hazard assessment of the electrical parts of the equipment B.7 Ignition hazard assessment of non-electrical ignition sources B.8 Equipment marking |
| 46 | Table B.1 – Example of an ignition hazard assessment for a shearer loader, EPL Mb (1 of 3) |
| 49 | Annex C (normative) Ignition sources C.1 Hot surfaces C.2 Flames and hot gases (including hot particles) |
| 50 | C.3 Mechanically generated sparks C.4 Electrical equipment C.5 Stray electric currents |
| 51 | C.6 Static electricity C.7 Lightning C.8 Radio frequency (RF) electromagnetic waves from 104 Hz to 3 × 1012 Hz (high frequency) |
| 52 | C.9 Electromagnetic waves from 3 × 1011 Hz to 3 × 1015 Hz C.10 Ionizing radiation C.11 Ultrasonics C.12 Adiabatic compression and shock waves |
| 53 | C.13 Exothermic reactions, including self-ignition of dusts |
| 54 | Annex D (informative) Guidance on potential risks for converter-fed motors |
| 55 | Annex E (normative) Tests for surface protective coating for Group I hand tools of EPL Mb E.1 Incendive impact tests in explosive mixture |
| 56 | E.2 Adhesion test of the protective coating |
| 57 | Figure E.1 – Rig for impact ignition test |
| 58 | Bibliography |
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