LIFT, IMO Spread of Flame Apparatus
ISO 5658-2; IMO Resolution A.653(16); ASTM E1317; ASTM E1321
This instrument uses a gas-fired radiant heat panel with pilot flame ignition to ignite a test specimen.
Following ignition, any flame front which develops is noted and a record is made of the progression of the flame front horizontally along the length of the specimen in terms of the time it takes to travel to various distances.
The results are expressed in terms of the flame spread distance/time history, the flame front velocity versus heat flux, the critical heat flux at extinguishment and the average heat for sustained burning.
To meet the IMO specification a stack is fitted complete with thermopile for estimating heat release rate.
The apparatus is supplied with all necessary controls, flux meter and specimen holder.
The complete test apparatus consists essentially of three main components, a radiant panel support framework and a specimen support framework which are linked together to bring the test specimen into the required configuration in relation to the radiant panel, and the specimen holder, which carries the test specimen.
The radiant burner system is fully automatic, with spark ignition and safety interlocks.