Standard Method of Test for Critical Radiant Flux of Floor Covering Systems Using a Radiant Heat Energy Source
What is NFPA 253?
This standard presents a method for evaluating critical radiant flux of floor coverings in corridors or exitways, thus providing a basis for estimating one aspect of the fire exposure behavior of floor covering systems.
Official document scope
What does NFPA 253 address?
This fire test response standard describes a procedure for measuring the critical radiant flux of horizontally mounted floor covering systems exposed to a flaming ignition source in a graded, radiant heat energy environment within a test chamber. Annexes discuss how to calibrate an apparatus, mounting methods, sample data logs, application and interpretation of results, safety precautions, and more.