PD 60079-14:2000

Foreword to PD 60079-14
Foreword
Introduction
1 Scope and object
2 Normative references
3 Definitions and terms [see IEC 50(426)]
4 General
      4.1 General requirements
      4.2 Documentation
5 Selection of electrical apparatus (excluding cables
      and conduits)
      5.1 Specific information
      5.2 Selection according to zones
      5.3 Selection according to the ignition temperature
             of the gas or vapour
      5.4 Selection according to apparatus grouping
      5.5 External influences
6 Protection from dangerous (incendive) sparking
      6.1 Danger from live parts
      6.2 Danger from exposed and extraneous conductive
             parts
      6.3 Potential equalization
      6.4 Static electricity
      6.5 Lightning protection
      6.6 Electromagnetic radiation
      6.7 Cathodically protected metallic parts
7 Electrical protection
8 Emergency switch-off and electrical isolation
      8.1 Emergency switch-off
      8.2 Electrical isolation
9 Wiring systems
      9.1 General
      9.2 Cable systems for Zone 0
      9.3 Cable systems for Zones 1 and 2
      9.4 Conduit systems
10 Additional requirements for type of protection "d"
      - Flameproof enclosures
      10.1 Solid obstacles
      10.2 Protection of flameproof joints
      10.3 Cable entry systems
      10.4 Motors supplied at varying frequency and
             voltage
      10.5 Conduit systems
11 Additional requirements for type of protection "e"
      - Increased safety
      11.1 Degree of production of enclosures (IEC 34-5
             and IEC 529)
      11.2 Cage induction motors - Thermal protection in
             operation
      11.3 Wiring systems
      11.4 Resistance heating devices
12 Additional requirements for type of protection "i"
      - Intrinsic safety
      12.1 Introduction
      12.2 Installation for Zones 1 and 2
      12.3 Installations for Zone 0
13 Additional requirements for type of protection "p"
      - Pressurized apparatus
      13.1 Ducting
      13.2 Actions to be taken on failure of
             pressurization
      13.3 Multiple pressurized enclosures with a common
             safety device
      13.4 Purging
14 Additional requirements for apparatus for use in
      Zone 2
      14.1 Degree of protection of enclosures (IEC 34-5
             and IEC 529)
      14.2 Energy-limited apparatus and circuits
      14.3 Wiring systems
      14.4 Motors supplied at varying frequency and voltage
15 Special applications (additional clause)
      15.1 Battery operated vehicles
      15.2 Personal electrical apparatus
Annex A (normative) Verification of intrinsically safe
                    circuits with more than one associated
                    apparatus with linear current/voltage
                    characteristics
Annex B (informative) Methods of determining the maximum
                      system voltages and currents in
                      intrinsically safe circuits with more
                      than one associated apparatus with
                      linear current/voltage characteristics
                      (as required by Annex A)
Annex C (informative) Frictional sparking risks with light
                      metals and their alloys
Annex D (informative) Determination of cable parameters
Annex ZA (normative) Normative references to international
                     publications with their corresponding
                     European publications
Bibliography

Gives requirements for design, selection and erection of electrical installations in explosive gas atmospheres, which are in addition to requirements for installations in non-hazardous areas. Applicable to all electrical equipment and installations in hazardous areas whether, temporary, permanent, portable, transportable or hand-held. Applicable to installations at all voltages.