CONTENTS
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Level of protection (equipment protection level, EPL)
5 Flameproof joints
6 Sealed joints
7 Operating rods
8 Supplementary requirements for shafts and bearings
9 Light-transmitting parts
10 Breathing and draining devices which form part
   of a flameproof enclosure
11 Fasteners, associated holes and blanking elements
   and openings
12 Materials and mechanical strength of enclosures -
   Materials inside the enclosures
13 Entries for flameproof enclosures
14 Verification and tests
15 Type tests
16 Routine tests
17 Switchgear for Group I
18 Lampholders and Iamp caps
19 Non-metallic enclosures and non-metallic parts of
   enclosures
20 Marking
21 Instructions
Annex A (normative) - Additional requirements for crimped
        ribbon elements and multiple screen elements of
        breathing and draining devices
Annex B (normative) - Additional requirements for elements,
        with non-measurable paths of breathing and draining
        devices
Annex C (normative) - Additional requirements for flameproof
        entry devices
Annex D (normative) - Empty flameproof enclosures as Ex
        components
Annex E (normative) - Cells and batteries used in flameproof
        'd' enclosures
Annex F (informative) - Mechanical properties for screws
        and nuts
Annex G (normative) - Additional requirements for flameproof
        enclosures with an internal source of release
        (containment system)
Annex H (normative) - Requirements for machines with
        flameproof 'd' enclosures fed from converters
Bibliography