BSI 19/30399410 DC:2019 Edition
$24.66
BS EN ISO/IEC 80079-41. Explosive atmospheres – Part 41. Reciprocating internal combustion engines
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 115 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 10 | 1 Scope |
| 11 | 2 Normative references |
| 12 | 3 Definitions |
| 14 | 4 Ignition hazards 5 Safety requirements and/or measures 5.1 For all explosion protection levels (EPLs) 5.1.1 General |
| 15 | 5.1.2 Ignition hazard assessment 5.1.3 Joints 5.1.3.1 Joint types 5.1.3.2 Closed joints |
| 16 | 5.1.3.3 Open joints 5.1.4 Electrical systems 5.1.4.1 General requirements 5.1.4.1.1 General 5.1.4.1.2 Protection against damage 5.1.4.1.3 Ingress protection |
| 17 | 5.1.4.2 Cables 5.1.4.2.1 Protection of cables and cable harnesses 5.1.4.2.2 Electrical system wiring |
| 18 | 5.1.4.3 Service temperature 5.1.5 Static electricity and bonding requirements 5.1.5.1 Equipotential bonding 5.1.5.2 Circuit resistance 5.1.5.3 Non-metallic materials 5.1.5.3.1 EPL Mb, EPL Gc and EPL Gb 5.1.5.3.2 EPL Dc and EPL Db |
| 19 | 5.1.5.4 Transmission belts 5.1.6 Safety and automation systems 5.1.6.1 Safety devices or safety systems 5.1.6.2 Safety function 5.1.6.2.1 Function of safety systems 5.1.6.2.2 Determination of the control parameters |
| 20 | 5.1.6.3 Requirements for safety devices 5.1.6.3.1 General 5.1.6.3.2 “Simple” safety devices: |
| 21 | 5.1.6.3.3 “Complex” safety devices |
| 22 | 5.1.6.4 Monitoring and alarm 5.1.6.5 Engine shutdown systems 5.1.6.5.1 General 5.1.6.5.2 Shutdown (normal stop) |
| 23 | 5.1.6.5.3 Emergency shutdown |
| 24 | 5.1.6.5.4 Gas detection systems |
| 25 | 5.1.7 Flame arresters 5.1.7.1 General 5.1.7.2 Types, construction and materials for flame arresters used in internal combustion engines 5.1.7.2.1 Types 5.1.7.2.2 Construction and materials |
| 26 | 5.1.7.3 Installation / positioning 5.1.7.4 Design of flame arresters 5.1.7.4.1 General 5.1.7.4.2 Flame arresters for Intake system |
| 27 | 5.1.7.4.3 Flame arresters for exhaust system 5.1.8 Spark arresters 5.1.8.1 General requirements 5.1.8.2 Spark arresters – Types 5.1.8.3 Spark arresters – Installation 5.1.8.4 Exemptions 5.1.8.4.1 General 5.1.8.4.2 Turbocharged Engines 5.1.8.4.3 Liquid seal flame arresters |
| 28 | 5.1.8.4.4 PM Filters 5.1.9 Engine configuration |
| 30 | 5.1.10 Fuel intake 5.2 EPL Mb 5.2.1 Maximum temperature 5.2.2 Gas path |
| 31 | 5.2.3 Air intake system 5.2.4 Exhaust system 5.2.5 Other devices 5.2.5.1 Cold start devices 5.2.5.2 Air preheating devices 5.2.5.3 Valves and venting devices 5.2.5.4 Inlet air pressure boosting devices |
| 32 | 5.2.5.5 Fuel systems 5.2.6 Mechanically generated sparks 5.2.6.1 Metallic materials 5.2.6.2 Fans and other rotating components 5.2.6.3 Motor starting systems (e. g. electrical, air, hydraulic and spring) engaging the flywheel ring gear 5.2.7 . Compressed air systems |
| 33 | 5.3 EPL Gb and EPL Gc 5.3.1 Maximum temperature 5.3.2 Gas path 5.3.3 Air intake system 5.3.3.1 EPL Gb Air ducts from a non-hazardous area 5.3.3.2 EPL Gc Air duct from the non-hazardous area |
| 34 | 5.3.3.3 Air duct from the hazardous area 5.3.4 Exhaust system 5.3.4.1 Exhaust system duct into a non-hazardous area 5.3.4.2 Exhaust system duct into a hazardous area 5.3.5 Other devices 5.3.5.1 Cold start devices 5.3.5.2 Air preheating devices 5.3.5.3 Valves and venting devices 5.3.5.4 Inlet air pressure boosting devices |
| 35 | 5.3.5.5 Crankcase 5.3.6 Mechanically generated sparks 5.3.6.1 Metallic materials 5.3.6.2 Fans and other rotating components 5.3.6.3 Starter Motors (e. g. electrical, air, hydraulic and spring) engaging the Flywheel toothed ring 5.3.7 Compressed air systems 5.4 EPL Db and EPL Dc 5.4.1 Maximum temperature 5.4.1.1 General 5.4.1.2 Maximum surface and exhaust gas temperature determined without a dust layer |
| 36 | 5.4.1.3 Maximum surface and exhaust gas temperature with respect to dust layers 5.4.2 Air intake system 5.4.2.1 Air ducts from a non hazardous area 5.4.2.2 Air duct from the hazardous area 5.4.3 Exhaust system 5.4.3.1 Exhaust system duct into a non-hazardous area 5.4.3.2 Exhaust system duct into a hazardous area 5.4.4 Cold start devices 5.4.5 Mechanically generated sparks 5.4.5.1 Metallic materials 5.4.5.2 Fans and other rotating components 5.4.5.3 Motor starting systems (e. g. electrical, air, hydraulic and spring) engaging the flywheel ring gear |
| 37 | 5.4.6 Compressed air systems 6 EPL Gc spark ignited, gaseous fuel engine 6.1 General 6.1.1 Differences between gaseous fuel ignition engines and compression ignition engines 6.1.2 Fuel System 6.2 Ignition system 6.2.1 General 6.2.2 Component requirements 6.2.2.1 General 7 Test setup for Verification of the safety requirements and/or measures 7.1 General |
| 38 | 7.2 Documentation 7.3 Engine operation 7.4 Measuring instruments 7.5 Temperature measurement 7.5.1 Purpose of the test 7.5.2 Test procedure 7.5.2.1 General |
| 39 | 7.5.2.2 Measurement points and conditions 7.5.3 Acceptance criteria |
| 40 | 7.5.4 (Type) Test report / protocol 7.6 Determination of the maximum explosion pressure (Gc, Gb and Mb) 7.6.1 General 7.6.2 Test procedure 7.6.2.1 Test gases |
| 41 | 7.6.2.2 Test apparatus |
| 42 | 7.6.2.3 Test process |
| 43 | 7.6.2.4 Acceptance criteria 7.6.3 (Type) Test report 7.7 Over pressure test (Gc, Gb and Mb) 7.7.1 General 7.7.2 Test procedure static test 7.7.2.1 Testing the full System 7.7.2.1.1 Test apparatus 7.7.2.1.2 Test procedure hydrostatic test |
| 44 | 7.7.2.1.3 Acceptance criteria 7.7.2.1.4 (Type) Test report 7.7.2.2 Testing in sections 7.7.2.2.1 General 7.7.2.2.2 Test apparatus and test procedure 7.7.2.2.3 Acceptance criteria 7.7.2.2.4 (Type) Test report 7.7.3 Test procedure alternative dynamic test 7.7.3.1 General 7.7.3.2 Testing the full system 7.7.3.2.1 Test apparatus 7.7.3.2.2 Test procedure |
| 45 | 7.7.3.2.3 Acceptance criteria 7.7.3.2.4 (Type) Test report 7.7.3.3 Testing in sections 7.7.3.3.1 General 7.7.3.3.2 Test apparatus and test procedure 7.7.3.3.3 Acceptance criteria 7.7.3.3.4 (Type) Test report 7.8 Non-transmission testing 7.8.1 General |
| 46 | 7.8.2 Test set-up 7.8.2.1 Test apparatus |
| 47 | 7.8.2.2 Temperature 7.8.2.3 Sensors / Measuring equipment inlet system |
| 48 | 7.8.2.4 Sensors / measuring equipment exhaust system 7.8.2.5 Test mixtures |
| 49 | 7.8.2.6 Ignition 7.8.3 Non-transmission test procedure intake system 7.8.3.1 Required / Minimum input information 7.8.3.1.1 Test conditions |
| 50 | 7.8.3.1.2 Intake side of turbocharged/overcharged engines 7.8.3.1.3 Intake side of naturally aspirated engines 7.8.3.2 Test procedure |
| 51 | 7.8.3.3 Acceptance criteria 7.8.3.4 Test report 7.8.4 Non-transmission test procedure exhaust side 7.8.4.1 Required / Minimum input information 7.8.4.2 Test procedure |
| 52 | 7.8.4.3 Acceptance criteria 7.8.4.4 Test result 7.8.4.5 Test report 7.9 Testing Crankcase (Gb and Mb) |
| 53 | 7.10 Spark arrester tests 7.10.1 Dry type – spark arrester tests 7.10.2 Liquid type – spark arrester tests 7.11 Static electricity / Non-metallic material |
| 54 | 7.12 Verification engine control, alarms and shutdown 7.13 Leak test for ducts 8 Instructions 8.1 Accompanying documents 8.1.1 Group I Mining 8.1.2 Group II Flammable gas and vapours |
| 55 | 8.1.3 Group III Combustible dust 8.2 Inspection check list 8.2.1 Group I Mining 8.2.2 Group II Flammable gas and vapours |
| 56 | 8.2.3 Group III Combustible dust 9 Marking 9.1.1 General |
| 57 | 9.1.2 EPL Mb 9.1.3 EPL Gb and EPL Gc 9.1.4 EPL Db and EPL Dc |
| 59 | Annex A (informative) Engine conditions and ignition sources – Group I equipment A.1 Engine conditions A.1.1 Normal operating conditions A.1.2 Expected malfunctions A.1.3 Rare malfunctions A.2 Ignition sources A.2.1 Hot surfaces |
| 60 | A.2.2 Flame and hot gases A.2.3 Sparks A.2.4 Adiabatic compression |
| 61 | Annex B (informative) Engine conditions and ignition sources – Group II and Group III equipment – Flammable gas, vapour and combustible dust atmospheres B.1 General B.2 Engine conditions B.2.1 Normal operating conditions B.2.2 Reasonably foreseeable malfunctions B.2.3 Rare malfunctions |
| 62 | B.3 Ignition sources B.3.1 Hot surfaces B.3.2 Flame and hot gases B.3.3 Sparks B.3.4 Adiabatic compression |
| 63 | Annex C (informative) Ignition hazard assessment for reciprocating internal combustion engines C.1 General requirements C.2 Procedure of ignition hazard assessment C.2.1.1 Formal Ignition hazard identification and assessment C.2.1.2 Assessment with malfunctions |
| 64 | C.2.1.3 Basic information necessary for the ignition hazard assessment C.3 Ignition hazard assessment report |
| 65 | Annex D (informative) Identification of Ignition Hazards |
| 83 | Annex E (informative) Test reports The following tables show examples for test reports. |
| 84 | Table E.1 Temperature type test report – Relevant data for protocolling |
| 101 | Annex F (normative) Test set up schematics |
| 109 | Annex G (informative) Charging test for non-conductive materials (IEC 60079-0) G.1 Test equipment G.2 Test sample |
| 110 | G.3 Test procedure |
| 111 | Annex H (informative) Spark ignition systems |
