Standard Test Method for Unsteady-State Heat Transfer Evaluation of Flame Resistant Materials for Clothing with Burn Injury Prediction
This test method determines the thermal performance estimate value (TPP) of materials used in flame resistant clothing for workers exposed to combined convective and radiant thermal hazards. This test method maintains the specimen in a static, horizontal position, and measures the non-steady state heat transfer through flame resistant clothing materials subjected to a combined convective and radiant heat exposure.
The test evaluates a material’s heat transfer properties when exposed to a heat exposure at a constant value and specific duration – then accounting for the thermal energy stored in the exposed test specimen after the heat exposure has ceased. Higher values of Thermal Performance Estimate ratings determined in this test associate to higher values of thermal (convective and radiative) energy protection against a predicted skin burn injury.