This European Standard specifies the basic design requirements for the selection of a gas explosion venting protective system. This European Standard, 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 prEN 15089.This European Standard is applicable to:- vent sizing to protect against the internal pressure effects of a gas explosion;- flame and pressure effects outside the enclosure;- recoil forces;- influence of vent ducts;- influence of i