توضیحات :
NFPA 271 – Standard Method of Test for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter
۲۰۰۹ Edition
Chapter 1 Administration
۱-۱ Scope.
۱-۱-۱* This test method measures the response of materials exposed to controlled levels of radiant heating, with or without an external igniter.
۱-۱-۲ This test method determines the ignitibility, heat release rate, mass loss rates, effective heat of combustion, and visible smoke development of materials and products.
۱-۱-۳* This test method tests the specimen in the horizontal orientation.
۱-۲ Purpose.
۱-۲-۱* This test method provides measurements of the behavior of material and product specimens under a specified radiant heat exposure in terms of the rate of heat release, effective heat of combustion, mass loss rate, time to ignition, and smoke production.
۱-۲-۲ The data obtained for a specific test describe the rate of heat and smoke release of the specimen when exposed to the specific conditions and procedures used in performance of that test.
۱-۲-۳ Release rate measurements provide a quantitative measure of specific changes in performance caused by product modification.
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