Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General
   4.1 Determination of suitability
   4.2 General requirements for equipment
   4.3 Definition of "potential ignition source" and
       "effective ignition source"
   4.4 Ingress Protection
       4.4.1 General
   4.5 Seals for moving parts
       4.5.1 Unlubricated gaskets, seals, sleeves,
             bellows and diaphragms
       4.5.2 Stuffing box seals
       4.5.3 Lubricated seals
   4.6 Equipment lubricants/Coolants/Fluids
   4.7 Vibration
5 Requirements for moving parts
   5.1 General
   5.2 Clearance
   5.3 Lubrication
6 Requirements for bearings
   6.1 General
   6.2 Lubrication
   6.3 Chemical compatibility
7 Requirements for power transmission systems
   7.1 Gear drives
   7.2 Belt drives
   7.3 Chain drives
   7.4 Other Drives
   7.5 Hydrostatic/Hydrokinetic/Pneumatic - equipment
8 Requirements for clutches and couplings
9 Requirements for brakes and braking systems
   9.1 Brakes used only for stopping in emergency
   9.2 Service brakes (including friction brakes and
       fluid based retarders)
   9.3 Parking brakes
10 Requirements for springs and absorbing elements
11 Requirements for conveyor belts
12 Marking
Annex A (informative) - Examples of some of the thought
        processes and principles used in the construction
        of items of equipment protected by 'Constructional
        Safety' protection
  A.1 Ignition hazard assessment relating to a Group II,
      category 2 pump, normally used in chemical industry
      A.1.1 Description of use
      A.1.2 Construction
      A.1.3 Ignition hazard assessment
      A.1.4 Determining the ignition protection
      A.1.5 The ignition hazard assessment document
      A.1.6 Marking with regard to the ignition protection
  A.2 Ignition hazard assessment relating to a Group II,
      category 1 stirrer
  A.3 Ignition hazard assessment relating to a Group II,
      category 1 compressed air motor used for tank cleaning
Annex B (normative) - Test requirements
  B.1 "Dry run" test for lubricated sealing arrangements
  B.2 Type test for determining the maximum engaging
      time of clutch assembly
      B.2.1 Apparatus
      B.2.2 Procedure
      B.2.3 Results
      B.2.4 Reporting
  B.3 Conductivity criteria for transmission belts
Annex C (informative) - Significant technical changes between
        this document and the previous edition of this European
        Standard
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 94/9 EC
Bibliography