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The new ISO11612 Standard : How it works

Publié le 16 May 2014

The new international EN ISO 11612 standard replaces the EN551 standard and now applies to your heat and flame protective wear. The new performance requirements for your PPE clothing are outlined below.

This new international standard specifies the performance criteria for assembling materials and clothing with limited flame spread. The aim is to reduce the risk of the clothing burning and becoming a hazard in itself; this standard is designed to prevent the wearer from suffering additional injury caused by their clothing.

What are the requirements laid down by the EN ISO 11612 standard ?

The product model must always satisfy the flame propagation code A1 and A2 and at least one of the following codifications (from B to F). The label should indicate the classification awarded. The material should be covered on one side, with a sufficient overlap between the jacket and the trousers (20cm when standing).

Several requirements, as for the EN 531 standard, only apply if the product model has a D and/or E coding:

  • no turn-ups around the sleeves or legs
  • external pockets must have flaps wider than the 10mm pocket on either side

This requirement does not apply to side pockets below the waist, the opening of which should be on an angle of less than 10° compared with the vertical seam. This point corresponds to the requirement laid down by the ISO 11611 standard for soldering wear (and constitutes a relaxing of the rules compared with the specifications outlined in the EN 531 D/E standard).

Closures should :

  • have a protective flap
  • have a maximum distance of 15cm between buttons
  • necklines must be fitted with a fastening
  • trouser legs can have a side split, provided that the split can be done up again and that the split and closure are covered by a flap

What’s changed from the previous EN 531 standard ?

  • The lining must be flame retardant, as with the external Code A fabric (without igniting, melting or holing)
  • These flame retardant properties are (also) tested after the maximum number of washes (=50)
  • Requirements concerning seam durability (min. 225 N) as well as its flame retardant properties