Detail of GB 31094-2014

Introduction of GB 31094-2014

1 Scope 1.1 This standard specifies the additional safety rules for the construction and installation of lift for explosive atmospheres used in Zones 1 and 2 of explosive gas atmosphere and Zones 21 and 22 of flammable dust atmosphere defined in GB 25285.1-2010. 1.2 This standard is applicable to the design, construction, installation, inspection and maintenance of electrically-driven pull-type, forced-type and hydraulic lift for explosive atmospheres with rated speed not greater than 1m/s. 1.3 The lift for explosive atmospheres used in special circumstances (like severe climate condition and seismic condition) shall not only meet those specified in this standard， but also meet the specific requirements. 1.4 This standard is not applicable to: a) The construction and installation of lift for explosive atmospheres used in Zone 0 of explosive gas atmosphere and Zone 20 of flammable dust atmosphere defined in GB 25285.1-2010; b) The lift used in hazardous zone like explosion due to the reaction between flammable substance and oxidizer (except oxygen) in atmosphere or other hazardous reaction and the explosion generated under non-atmospheric condition; c) The lift for explosive atmospheres constructed and installed before implementation of this standard; 2 Normative References The following documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) is applicable to this document. GB 3836.1-2010 Explosive Atmospheres - Part 1: Equipment - General Requirements GB 3836.2-2010 Explosive Atmospheres - Part 2: Equipment Protection by Flameproof Enclosures “d” GB 3836.3 Explosive Atmospheres - Part 3: Equipment Protection by Increased Safety "e" GB 3836.4-2010 Explosive Atmospheres - Part 4: Equipment Protection by Intrinsic Safety "i" GB 3836.5 Electrical Apparatus for Explosive Gas Atmosphere - Part 5: Pressurized Enclosures “p” GB 3836.6 Electrical Apparatus for Explosive Gas Atmosphere - Part 6: Oil-immersion“o” GB 3836.8 Electrical Apparatus for Explosive Gas Atmospheres - Part 8: Type of Protection “n” GB 3836.9 Electrical Apparatus for Explosive Gas Atmospheres - Part 9: Encapsulation “m” GB 3836.13 Explosive Atmospheres - Part 13: Repair, Overhaul, Restoration and Renovation of Equipment GB 3836.15-2000 Electrical Apparatus for Explosive Gas Atmospheres - Part 15: Electrical Installations in Hazardous Areas (other than Mines) GB 3836.16 Electrical Apparatus for Explosive Gas Atmospheres - Part 16: Inspection and Maintenance of Electrical Installation (other than Mines) GB 3836.18 Explosive Atmospheres - Part 18: Intrinsically Safe System GB/T 7024-2008 Terminology of Lifts, Escalators, Passenger Conveyors GB 7588-2003 Safety Rules for the Construction and Installation of Electric Lifts GB l2476.1-2013 Electrical Apparatus for Use in the Presence of Combustible Dust - Part 1:General Requirements GB 12476.2 Electrical Apparatus for Use in the Presence of Combustible Dust - Part 2: Selection and Installation GB 12476.4 Electrical Apparatus for Use in the Presence of Combustible Dust - Part 4: Protection by Intrinsic Safety “iD” GB 12476.5 Electrical Apparatus for Use in the Presence of Combustible Dust - Part 5: Protection by Enclosures “tD” GB 12476.6 Electrical Apparatus for Use in the Presence of Combustible Dust - Part 6: Protection by Encapsulation “mD” GB 12476.7 Electrical Apparatus for Use in the Presence of Combustible Dust - Part 7: Type of Protection “pD" GB/T 18775 Specification for the Service of Lifts, Escalators and Moving Walks GB 21240-2007 Safety Rules for the Construction and Installation of Hydraulic Lifts GB/T 24478-2009 Traction Machine of Electric Lifts GB 25194-2010 Safety Rules for the Construction and Installation of Service Lifts GB 25285.1-2010 Explosive Atmospheres - Explosion Prevention and Protection - Part 1: Basic Concepts and Methodology GB 25286.1-2010 Non-electrical Equipment for Potentially Explosive Atmospheres - Part 1: Basic Method and Requirements GB 25286.2 Non-electrical Equipment for Potentially Explosive Atmospheres - Part 2: Protection by Flow Restricting Enclosure “fr” GB 25286.3 Non-electrical Equipment for Use in Potentially Explosive Atmospheres - Part 3: Protection by Flameproof Enclosure“d” GB 25286.5 Non-electrical Equipment for Use in Potentially Explosive Atmospheres - Part 5: Protection by Constructional Safety “c” GB 25286.6 Non-electrical Equipment for Use in Potentially Explosive Atmospheres - Part 6: Protection by Control of Ignition Source “b” GB 25286.8 Non-electrical Equipment for Potentially Explosive Atmospheres - Part 8: Protection by Liquid Immersion “k” GB 50257 Code for Construction and Acceptance of Electric Device for Explosion Atmospheres and Fire Hazard Electrical Equipment Installation Engineering IEC 60079-28 Explosive Atmospheres - Part 28: Protection of Equipment and Transmission Systems Using Optical Radiation EN 13463-1:2009 Non-electrical Equipment for Use in Potentially Explosive Atmosphere - Part 1: Basic Method and Requirements 3 Terms and Definitions For the purposes of this document, the terms and definitions specified in series standards of GB 3836, GB 12476, GB 25285 and GB 25286, GB/T 7024-2008, GB 7588-2003, GB 21240-2007 and GB 25194-2010 as well as the followings apply. 3.1

Contents of GB 31094-2014

Foreword I Introduction II 1 Scope 2 Normative References 3 Terms and Definitions 4 Significant Hazard List 5 Safety Requirements and Protective Measures 6 Information for Use 7 Inspection and Maintenance Appendix A (Normative) Ignition Hazard Assessment for Electrical Element and Non-electrical Element Appendix B (Normative) Cable Entry of Electrical Element for Explosive Atmospheres Appendix C (Normative) Daily Maintenance and Regular Inspection of Lift for Explosive Atmospheres Bibliography