This test provides methods for evaluating flammability characteristics
of 155 mm x 800 mm specimens in vertical orientation. The specimens
are exposed to a graded radiant flux field supplied by a gas-fired
radiant panel. Means are provided for observing the times to ignition,
spread and extinguishment of flame along the length of the specimen
as well as for measuring the compensated millivolt signal of the stack
gas thermocouples as the burning progresses. Experimental results
are reported in terms of: heat for ignition, heat for sustained burning,
critical flux at extinguishment and heat release of specimen during
burning.