Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Equipment categories and explosion groups
   4.1 Equipment category
   4.2 Explosion groups (subdivisions)
   4.3 Specific explosive atmospheres
5 General
   5.1 General requirements
   5.2 Ignition hazard assessment
        5.2.1 Formal analysis
        5.2.2 Assessment for equipment Group 1
        5.2.3 Assessment for equipment Group 2
        5.2.4 Assessment with faults
        5.2.5 Establishing the maximum surface
               temperature
        5.2.6 Dust deposits and other material in the
               gap of moving parts
        5.2.7 Ignition hazard assessment
        5.2.8 Ignition hazard assessment report
   5.3 Openings of enclosures
   5.4 Category 1 equipment
   5.5 Category M1 equipment
6 Temperatures
   6.1 Maximum surface temperature
        6.1.1 Equipment Group 1
        6.1.2 Equipment Group 2G
        6.1.3 Equipment Group 2D
        6.1.4 Design temperatures
7 Non-metallic parts of the equipment
   7.1 General
   7.2 Specification of the materials
   7.3 Thermal endurance
   7.4 Electrostatic charges of parts of the equipment
        7.4.1 General
        7.4.2 Occurrence of highly efficient
               charge-generating mechanisms (leading to
               propagating brush discharges on
               non-conductive layers and coatings)
        7.4.3 Equipment Group 1
        7.4.4 Equipment Group 2
8 Equipment containing light metals
   8.1 Equipment Group 1
   8.2 Equipment Group 2
9 Removable parts
10 Materials used for cementing
11 Connection facilities for earthing conducting parts
12 Light-transmitting parts
13 Verification and tests
   13.1 General
   13.2 Technical documentation
   13.3 Tests
        13.3.1 General
        13.3.2 Mechanical tests
        13.3.3 Measurement of the maximum
        13.3.4 Tests of non-metallic parts of the
               equipment relevant to the level of
               protection
        13.3.5 Thermal shock test
14 Marking
   14.1 General
   14.2 Marking of equipment complying with this
        standard
   14.3 Examples of the full marking (informative)
        14.3.1 Example showing an item of Group 2,
               non-electrical equipment certified to
               this standard
        14.3.2 Example showing an item of Group 2,
               category 2 equipment
   14.4 Further examples of the ignition protection
        marking only (informative)
        14.4.1 Example of equipment Group 2, category
               2 for gas ignition protection flame-proof
               suitable for explosion gas Group 2B with
               a maximum surface temperature class T4
        14.4.2 Example of equipment Group 2, category
               3 for gas explosive atmospheres, with a
               maximum surface temperature class T4
               without any type of ignition protection
        14.4.3 Example of equipment Group 2, category
               2 for dust explosion atmospheres with
               ignition protection constructional
               safety and a minimum surface temperature
               110 degree C
        14.4.4 Example for marking for gas and dust
               atmospheres
        14.4.5 Example for marking of equipment having
               two categories, e.g. for different parts
               of the equipment
15 Information for use
Annex A (normative) Methodology for confirming the
        category
   A.1 Methodology for confirming the category of
        equipment Group 1
        A.1.1 Category M1 equipment
        A.1.2 Category M2 equipment
   A.2 Methodology for confirming the category of
        equipment Group 2
        A.2.1 Category 1 equipment
        A.2.2 Category 2 equipment
        A.2.3 Category 3 equipment
Annex B (informative) Ignition hazard assessment
   B.1 Example of an ignition hazard assessment for
        the non-electrical part of a solenoid valve
   B.2 Example of an ignition risk assessment document
        for a conveyor belt intended for use in a
        potentially explosive atmosphere
        B.2.1 Intended usage of the equipment
        B.2.2 Description of the equipment
        B.2.3 Assessment
Annex c (normative) Charging tests with non-conductive
        materials
   C.1 Introduction
   C.2 Principle of the test
   C.3 Samples and apparatus
   C.4 Procedure
        C.4.1 Conditioning
        C.4.2 Determination of the most efficient
               charging method
Annex D (informative) Example of rig for resistance to
        impact test
Annex ZA (informative) Clauses of this European Standard
         addressing essential requirements or other
         provisions of EU Directives
Bibliography