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eLibrary > BS EN 14973:2015 Conveyor belts for use in underground installations. Electrical and flammability safety requirements >

BS EN 14973:2015 Conveyor belts for use in underground installations. Electrical and flammability safety requirements, 2015

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BS EN 14973:2015 Conveyor belts for use in underground installations. Electrical and flammability safety requirements, 2015

Contents Page
European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Ignition hazard assessment
5 Electrical resistance
6 Frictional heating [Go to Page]
6.1 Conveyor belts intended for general use in underground installations (Class A), and for use in hazardous installations where secondary safety devices are present (Classes B2 and C2)
6.2 Conveyor belts intended for use in installations where there is a potentially flammable atmosphere and where secondary safety devices are not present (Class B1)
6.3 Conveyor belts intended for use in installations where there is a potentially flammable atmosphere plus combustible dust or material conveyed, and where secondary safety devices are not present (Class C1)
7 Resistance to ignition [Go to Page]
7.1 Conveyor belts intended for general use in underground installations (Class A), for use where there is a potentially flammable atmosphere (Classes B1 and B2), and for use in hazardous installations where secondary safety devices are present (Class...
7.2 Conveyor belts intended for use in installations where there is a potentially flammable atmosphere plus combustible dust or material conveyed, and where secondary safety devices are not present (Class C1)
8 Fire propagation [Go to Page]
8.1 Introduction
8.2 Conveyor belts intended for general use in underground installations (Class A) and for use where there is a potentially flammable atmosphere (Classes B1 and B2) [Go to Page]
8.2.1 General
8.2.2 Two metre propane burner test
8.2.3 Double burner test
8.2.4 Mid-scale high energy test
8.3 Conveyor belts intended for use in installations where there is a potentially flammable atmosphere plus combustible dust or material conveyed, and where secondary safety devices are not present (Class C1)
8.4 Conveyor belts intended for use in installations where there is a potentially flammable atmosphere plus combustible dust or material conveyed, plus additional fuel sources (fire load) and where secondary safety devices are present (Class C2) [Go to Page]
8.4.1 Full scale gallery
8.4.2 Laboratory scale gallery
Table 1 – Requirements when tested in accordance with EN 12881–1:2014, Method D
9 Marking
Table 2 — Summary of safety classes for conveyor belts for underground installations
Annex A (informative) Hazards and risk assessment
A.1 Identification of hazards
A.2 Risk assessment
A.3 Methods for addressing hazards
Annex B (informative) Example of an ignition hazard assessment for a conveyor belt intended for use in a potentially explosive atmosphere
Table B.1 — Example of an ignition hazard assessment
Annex C (informative) Suggested conveyor belt approval / compliance options
Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 94/9/EC
Table ZA.1 — Correspondence between this European Standard and Directive 94/9/EC
Annex ZB (informative) Relationship between this European Standard and the Essential Requirements of EC Directive 2006/42/EC
Bibliography [Go to Page]

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BS EN 14973:2015 Conveyor belts for use in underground installations. Electrical and flammability safety requirements, 2015

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