The Fire Propagation Apparatus (FPA) is used to evaluate the flammability of materials and products; however, unlike the cone calorimeter, the heat is supplied by infrared heating lamps.

The FPA also provides control over the oxygen environment around the sample; it is designed to obtain the transient response of such materials subject to prescribed heat fluxes in low oxygen or high oxygen environments.

The instrument can be used to determine “Fire Propagation Index” and the same parameters that can be obtained using the cone calorimeter. The FPA is specially designed for testing semiconductor fabrication materials, underground mine belts and cables.

The FPA was developed by FTT and FM global and has been standardised in accordance ISO 12136.

Fire Propagation Apparatus