This European Standard specifies minimum requirements for free flow surface supplied and free flow surface oriented diving apparatus to ensure a minimum level of safe operation of the apparatus. It applies toThe following:a maximum depth of 50 m for apparatus using:a) air or; b) oxygen or; c) oxygen in nitrogen mixtures (Nitrox) or; d) oxygen in helium mixtures (Heliox) or; e) oxygen, nitrogen and helium mixtures (Trimix); water temperatures between 4 ℃ and 34 ℃ or outsideThese temperatures as specified byThe manufacturer; environmental temperatures between-20 ℃ and 50 ℃ or outsideThese temperatures as specified byThe manufacturer.The requirements of this European Standard are intended to take account of the interaction betweenThe wearer,The apparatus, and where possibleThe environment in whichThe apparatus is likely to be used.This European Standard does not cover saturation diving systems, mini bell systems or apparatus used for oxygen decompression only.
EN 15333-2:2009 history
2009EN 15333-2:2009 Respiratory equipment - Open-circuit umbilical supplied compressed gas diving apparatus - Part 2: Free flow apparatus