prEN 14994 rev

Gas explosion venting protective systems prEN 14994 rev

Scope

This document specifies the basic design requirements for the sizing of a gas explosion venting protective system. EN 14994, EN 14797 and EN 14460 form a series of three standards which are used together.
NOTE 1 These three standards together represent the concept of gas explosion venting.
NOTE 2 To avoid transfer of explosions to other communicating equipment one should also consider applying explosion isolation, see EN ISO 16852 and EN 15089.
This document specifies:
 how to size an explosion vent area
 the internal pressure effects of a gas explosion;
 flame and pressure effects outside the enclosure;
 recoil forces;
 influence of vent ducts;
 influence of initial temperature and pressure.

This document does not provide design and application rules against effects generated by detonation reactions or runaway exothermic reactions including decomposition in the gas phase.
This document is not applicable to:
 fire risks arising either from materials processed, used or released by the equipment or from materials that make up equipment and buildings;
 design, construction and testing of explosion venting devices, which are used to achieve explosion venting1;
 protection against overpressures caused by events such as overfilling, overpressurisation, fire engulfment, overheating etc.

NOTE 3 Protection by venting against dust and hybrid explosions is specified in EN 14491.

Related legislation

Legislation related to this standard