ANTI-STATIC

Symbol EN 1149-5

EN 1149-5 
Protective clothing with Electrostatic properties

This standard specifies PPE Clothing used in explosive environments (i.e. ATEX) where there is a risk that the garments could create sparks (source of ignition), which in turn could ignite explosive materials. 


To certify garments to this standard, the Anti-Static properties of the fabric are tested according to EN 1149-1 (surface resistivity) or EN 1149-3 (charge decay). The design of the garment is also a parameter in the certification and CE marking of Anti-Static/ATEX garments.

 

With Anti-Static properties and the right design of the garment, you can remove the source of ignition and minimise the risk. ATEX-environments are divided in to different zones with different levels of risks. Anti-Static garments marked EN 1149-5 are intended to be worn in Atex zones 1, 2, 20, 21 and 22. In oxygen enriched atmospheres or in zone 0, the Anti-Static garments should not be used without first being approved by a qualified Safety Engineer, as wear and tear can affect the protection of the garment and it is crucial that they are worn the correct way in these environments..

 

Atex zone classifications for gas, mist and vapours
Zone 0Environment where a mixture of air and flammable gas, mist or vapour occurs often and persists for long periods of time.
Zone 1Environment where a mixture of air and flammable gas, mist or vapour is likely to occur under normal conditions.
Zone 2 Environment where a mixture of air and flammable gas, mist or vapour can occur under normal conditions but dilutes quickly.

 

Atex zone classifications for dust
Zone 20Environment where explosive clouds of dust appear often and for extended periods.
Zone 21Environment where explosive clouds of dust can appear under normal conditions.
Zone 22 Environment where explosive clouds of dust is not likely to appear and if they do, dissapears quickly.
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