EN 1149 Electrostatic Properties of Protective Clothing

This is the European Standard for garments that protect against electrostatic discharge in areas where there is a risk of explosion.

EN 1149: Electrostatic properties of protective clothing (antistatic)

EN1149

EN1149

This is the European Standard for garments that protect against electrostatic discharge in areas where there is a risk of explosion (ATEX Environments) such as petrochemical refineries and fuel distribution companies.

Annex II, art. 2.3. of the ATEX directive 99/92/CE concerning the protection of workers likely to be exposed to the risk of explosive atmospheres says: “Workers must be provided with appropriate working clothing consisting of materials which do not give rise to electrical discharges that can ignite explosive atmospheres”.

 

Under the scope of the PPE manufacturers Directive 89/686/Ce a series of protective clothing standards have been developed relating to electrostatic properties:

  • EN 1149-5:2008 – Performance Requirements

Anti-static PPE are certified to EN 1149-5 as this standard covers the performance requirements and refers to the choice of 2 different test methods (EN 1149-1 or EN 1149-3)

  • EN 1149-1:2006 – Measurements of Surface Resistivity

This test method is most appropriate for materials for which the electrostatic dissipative behaviour is based on surface conductivity (for instance containing surface conductive yarns or a homogenous conductive outside PVC coating layer). This method is not appropriate for core conductive fibres.

  • EN 1149-3:2004 – Measurements of Surface Resistivity.

This test method is referenced for materials for which the electrostatic dissipative behaviour is based on core conducting fibres but can also be used for surface conducting materials.

In the 1149 series, there is also an EN 1149-2 (measurement of the electrical resistance through a material; the vertical resistance) which is used as a test method in EN ISO 11611 (welders clothing) and which is also mentioned in Annex H of EN 469:2005.