EN ISO 14116:2015

PROTECTIVE CLOTHING - PROTECTION AGAINST FLAME - LIMITED FLAME SPREAD MATERIALS, MATERIAL ASSEMBLIES AND CLOTHING

This International Standard specifies the performance requirements for the limited flame spread properties of all materials, all material assemblies, and protective clothing in order to reduce the possibility of the clothing burning when in occasional and brief contact with small flames and thereby constituting a hazard. Additional requirements for clothing are also specified, including design requirements, mechanical requirements, marking, and information supplied by the manufacturer.

When protection against heat hazards is necessary, in addition to protection against flame, this International Standard is not appropriate. International Standards such as ISO 11612 are to be used instead.
A classification system is given for materials, material assemblies, and garments which are tested according to ISO 15025, Procedure A.

The limited flame spread index, which shall always be quoted together with the cleaning index, e.g.

• 3/5I/75 indicates material that meets flammability index 3, five times industrially-washed at 75°C
• 2/5H/60 indicates a material that meets flammability index 2, five times home-washed at 60°C
• 3/5C/P indicates a material that meets flammability index 3, five times dry-cleaned with perchlorethylene
• 2/0/0 indicates aluminized material, leather or material for single use only that meets flammability index 2, that has not
  been pre-treated
• 2/25H/75 indicates a material that meets flammability index 2, 25 times home-washed at 75°C

Demands

• If a single layer garment contains index 1 materials, those have to be worn over index 2 or 3 garments, and may not
  come into contact with the skin, e.g. in the neck and wrist area;
• Where protection is provided by an outer two-piece suit, overlap of at least 20 cm shall be maintained when wearer is
  Standing;
• Trousers shall not have turn-ups.