توضیحات :
NFPA 272 – Standard Method of Test for Heat and Visible Smoke Release Rates for Upholstered Furniture Components or Composites and Mattresses Using an Oxygen Consumption Calorimeter
۲۰۰۳ Edition
Chapter 1 Administration
۱-۱ Scope.
۱-۱-۱ This test method shall be used to determine the ignitability and release rates of heat and visible smoke from components or composite structures of upholstered furniture and mattresses using an oxygen consumption calorimeter.
۱-۱-۲ In this test method, a horizontally oriented specimen shall undergo radiant thermal exposure using an external igniter.
۱-۱-۳ Radiant exposure shall be maintained at a constant rate of 35 kW/m2 to determine time to sustained flaming, rate of heat release per unit area (kW/m2), specific extinction area, and effective heat of combustion (MJ/kg).
۱-۱-۴ The rate of heat release shall be determined by measurement of oxygen consumption as determined by the level of oxygen concentration and the flow rate in the combustion product stream.
۱-۱-۵ The effective heat of combustion shall be determined from a concomitant measurement of specimen mass loss rate, in combination with the heat release rate.
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