BIS IS/IEC 60079-2 : 2007

NATIONAL FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Protection types
5 Constructional requirements for pressurized
   enclosures
6 Temperature limits
7 Safety provisions and safety devices (except
   for static pressurization)
8 Safety provisions and safety devices for static
   pressurization
9 Supply of protective gas
10 Pressurized equipment with an internal
   source of release
11 Release conditions
12 Design requirements for the containment system
13 Protective gas and pressurizing techniques
14 Ignition-capable apparatus
15 Internal hot surfaces
16 Type verification and tests
17 Routine tests
18 Marking
19 Instructions
Annex A (normative) - Purging and dilution
        tests
Annex B (informative) - Examples of functional
        sequence diagram
Annex C (informative) - Examples of the changes
        in pressure in ducts and enclosures
Annex D (informative) - Information to be provided
        to the user
Annex E (normative) - Classification of the type of
        release within enclosures
Annex F (informative) - Examples for the use of the
        dilution area concept
Annex G (normative) - Infallibility test for containment
        system
Annex H (informative) - Introduction of an alternative
        risk assessment method encompassing 'equipment
        protection levels' for Ex equipment

Covers the specific requirements for the construction and testing of electrical equipment with pressurized enclosures, of type of protection 'p', intended for use in explosive gas atmospheres or explosive dust atmospheres.