ULC-S128-1992

1.1 This test method determines the degree of combustibility of building materials by measuring the rate of heat release from specimens exposed to radiant heat using the test apparatus, specimen configurations, and procedures described. 1.2 This test method provides for radiant thermal exposure of a specimen together with application of a pilot flame on the specimen. 1.3 Heat release is measured from a specimen inserted into a controlled exposure chamber. The measurements are taken through a period of ignition and until such time as the heat release has ceased, but the duration of the test shall not exceed 10 min. 1.4 This test method is used to test materials and products under an external heat flux exposure of 40 kW/m². ULC unable to provide withdrawal date. Nov. 13, 2009