I.S. EN 14994:2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Venting of enclosures
5 Venting of isolated compact enclosures
  5.1 General
  5.2 Venting of isolated compact enclosures
  5.3 Situations outside the constraints of the basic method
      (turbulence inducing elements, partially filled enclosures)
      5.3.1 General
      5.3.2 Elevated initial pressure
      5.3.3 Effect of initial turbulence
      5.3.4 Effect of partial filling
      5.3.5 Venting of enclosures containing turbulence inducing
            elements
  5.4 Elongated enclosures
      5.4.1 General
      5.4.2 Venting of elongated enclosures vented at each end
      5.4.3 Venting of elongated enclosures vented along the
            enclosure
  5.5 Pipes
  5.6 Interconnected enclosures
  5.7 Vent ducts
6 Supplementary design aspects
  6.1 General
  6.2 Positioning and shape of explosion vents
  6.3 Choice of venting device
  6.4 External effects
      6.4.1 General
      6.4.2 Flame effects
      6.4.3 Pressure effects
      6.4.4 Deflectors
  6.5 Recoil forces
7 Information for use
  7.1 Marking
  7.2 Accompanying documents
Annex A (informative) Assessment of the level of congestion in
        rooms containing turbulence including elements
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 94/9/EC
Bibliography

Describes the basic design requirements for the selection of a gas explosion venting protective system.