EN 13463-1:2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Equipment categories and explosion groups
5 Ignition hazard assessment
6 Assessment of possible ignition sources
7 Additional considerations
8 Verification and tests
9 Documentation and information for use
Annex A (normative) Methodology for confirming the category
Annex B (informative) Explanation of the ignition hazard
        assessment procedure
Annex C (informative) Examples of ignition hazard assessment
Annex D (informative) Charging tests with non conductive materials
Annex E (informative) Example of rig for resistance to impact test
Annex F (normative) Rig for impact ignition test
Annex G (informative) Consideration of misuse which can
        reasonably be anticipated during ignition hazard
        assessment procedure
Annex H (informative) Significant changes between this
        European Standard and the previous edition
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 94/9/EC
Bibliography

This European Standard specifies the basic method and requirements for design, construction, testing and marking of non-electrical equipment intended for use in potentially explosive atmospheres in air of gas, vapour, mist and dusts. Such atmospheres can also exist inside the equipment. In addition, the external atmosphere can be drawn inside the equipment by natural breathing produced as a result of fluctuations in the equipment’s internal operating pressure, and/or temperature.This European Standard is valid for atmospheres having pressures ranging from 0,8 bar to 1,1 bar and temperatures ranging from - 20 °C to + 60 °C., i.e. equipment built to this European Standard will be satisfactory to any service conditions within this range unless otherwise specified.NOTE 1The requirements of this European Standard can also be helpful for the design, construction, testing and marking of equipment intended for use in atmospheres outside the validity range stated above. In this case however, the ignition hazard assessment, ignition protection provided, additional testing (if necessary), manufacturer’s technical documentation and instructions to the user, should clearly demonstrate and indicate the equipment’s suitability for the conditions it may encounter. It should also be recognized that changes in temperature and pressure can have a significant influence on ignitability.This European Standard does not cover additional marking for equipment intended for use outside the scope of its validity such as an oxygen-enriched atmosphere.This European Standard is also applicable for the design, construction, testing and marking of components, protective systems, devices and assemblies of these products which have possible ignition sources and are intended for use in potentially explosive atmospheres.