EN533

Similar Terms: ISO14116

This international standard specifies the performance requirements for the limited flame spread properties of materials and protective clothing.

 

This standard only covers resistance of a material or assemblies of materials to flame spread, no other properties are considered. It is a basic standard which demonstrates that the fabric tested has flame resistant properties and gives an indication as to the degree of resistance.

 

The testing consists of the application for a fixed time (10 seconds) of a specific propane gas flame, placed horizontally at a fixed distance from the bottom of a vertically suspended strip of the fabric of fixed width (50mm). Once the fabric has been exposed to the flame it is observed for holes in the fabric, the formation of flaming debris and the spread of afterglow (continued burning without flame). The test specimen is then awarded an index level according to its performance with regard to the three properties mentioned above.

 

Index 1; After testing any remaining flame or any hole in the fabric formed by the flame during testing must not reach the edge of the fabric. There must be no flaming debris. Any afterglow (residual burning) must not spread beyond the area affected by the flame during the test.

Index 2; As index 1 but there must not be any holes in the fabric.

Index 3; As Index 2 but any flaming of the fabric after the flame source has been removed must cease within 2 seconds of the sources removal

Related Products

2 Item(s)

per page

2 Item(s)

per page