UNI VF 8456 Combustible Products Combustible on Both Surfaces - Reaction to Fire by Applying a Small Flame

In the UNI VF 8456 standard developed by the Italian National Standards Institute (UNI), a test sample exposed to the effect of a small flame applied to its lower edge Describes a test method for detecting post-burn time, post-incandescence time, damaged area, and dripping.

Flame spread during testing is measured along the edges of a vertical or horizontal surface of a sample exposed to a flame and a radiant panel. After flashing, the damaged area and dripping condition are observed. Based on observations of flame spread, damaged area, and dripping and burning debris, materials are classified as:

Level 1: Flame propagation velocity was not measured (flame did not reach the third mark), damaged area is less than 300mm, post-flare period is less than 180 seconds, no drips or flame residues.
Level 2: Flame propagation velocity less than 30 mm/min, damaged area greater than 300 mm less than 600 mm, post-flare period more than 180 seconds Less than 360 seconds, there are drops or burning debris that extinguish after 3 seconds.
Level 3: Flame propagation velocity is more than 30 mm/min, damaged area is greater than 600 mm, post-flare period is more than 180 seconds less than 360 seconds, there are droplets or burning debris that do not go out around 3 seconds.

This standard is valid for all products that are vertically suspended or that can catch fire on both sides at the same time, suitable for their intended use. This standard does not apply to building materials with test methods defined in the UNI EN 13501-1 standard.

This test method provides an indication of the fire response of a product in the initial stage of a fire under the influence of a limited volume ignition source.

The UNI VF 8456 standard is considered among the important international fire protection standards.

Among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, our organization, with its trained and expert staff and advanced technological equipment, aims to determine the reaction to fire by applying a small flame to combustible products that can strike fire on both surfaces, within the scope of the UNI VF 8456 standard. It also provides testing services.