EN 50223:2015

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 List of significant hazards
5 Safety requirements and/or measures
6 Testing
7 Information for use
Annex A (normative) - Determination of the concentration
        of ignitable flock material in terms of LEL
Annex B (normative) - Determination of concentration of
        organic solvents
Annex C (informative) - Classification of areas with potential
        explosion hazard
Annex D (informative) - Example of marking
Annex ZY (informative) - Significant changes between this
         European Standard and EN 50223:2010
Annex ZZA (informative) - Coverage of Essential Requirements
          of EU Directive 2006/42/EC
Annex ZZB (informative) - Coverage of Essential Requirements
          of EU Directive 94/9/EC
Bibliography

1.1This European Standard specifies requirements for automatic electrostatic flock application equipment which is designed for applying ignitable flock which may form explosive atmospheres in the flock application area. In this context a distinction is made between flock application devices which due to their type of construction comply with the requirements as laid down in EN 50050-3, as applicable, and those for which higher discharge energies are stipulated. This European Standard also specifies the constructional requirements for a safe operation of the stationary equipment of flock application booths, including the electrical installations and the accessories. This European Standard deals with all significant hazards, hazardous situations and events relevant to flock application booths, when they are used as intended and under conditions which are foreseeable as malfunction by the manufacturer (see Clause 4). 1.2This European Standard considers three types of electrostatic flock systems. For more details, see Table 1. 1.3This European Standard deals with those hazards occurring during stationary automatic electrostatic flocking. Among these hazards are, above all, ignition hazards of the generated explosive atmosphere and hazard to persons. 1.4The stationary equipment dealt with in this European Standard is considered to be equipment of group II, category 3D for the use in areas with potential explosion hazards of zone 22. 1.5This European Standard is not applicable for -flock systems in which mixtures of solvent vapours in air occur with a concentration of > 20 % of the LEL, -flock systems operated with AC voltage, -the application system for liquid or pasty substances (e.g. adhesives, primer), -the cleaning of flock application booths, -the storage and handling of ignitable substances outside the coating plant.