Measurement of the discharge of electrostatic charges from the surface of clothing materials. Discharge of charges = the transfer of a charge via or through a material, as a result of which the charge density or the surface potential at the point at which the charge was located is reduced. Typical areas of application are supply companies (e.g. gas, liquid fuels, fuels), the petrochemical industry, petrol stations, tank cleaning companies, etc.
Safe earthing, e.g. through the wearing of conductive shoes must be ensured. (Resistance of the shoe < = 10ex8) must be ensured. Please ensure that your entire body is covered (even the clothing worn underneath the protective clothing), do not undress in potentially explosive areas. Always keep clothing closed when worn. Application in explosion zone 0 and for gas/ vapour and air mixtures of explosion group IIC requires additional work-specific risk analyses.
EN 1149-5 Performance requirements for electrostatic properties
This standard is one of a series of standard test methods and requirements for the electrostatic properties of protective garments. It specifies the requirements for avoiding flammable discharges for electrostatic dissipative protective garments. In flammable atmospheres that are enriched with oxygen, the requirements may not be sufficient. This standard is not applicable for protection against mains voltages.