ASTM-F1939 › Standard Test Method for Radiant Heat Resistance of Flame Resistant Clothing Materials with Continuous Heating
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1.1 This test method rates the non-steady state thermal resistance or insulating characteristics of flame resistant clothing materials subjected to a continuous, standardized radiant heat exposure.
1.1.1 This test method is not applicable to clothing materials that are not flame resistant.
Note 1: The determination of a clothing material's flame resistance shall be made prior to testing and done in accordance with the applicable performance standard, specification standard, or both, for the clothing material's end-use.
1.1.2 This test method does not predict skin burn injury from the standardized radiant heat exposure as it does not account for the thermal energy contained in the test specimen after the exposure has ceased.
Note 2: See for additional information regarding this test method and predicted skin burn injury.
1.2 This test method is used to measure and describe the response of materials, products, or assemblies to heat under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound or other units that are commonly used for thermal testing.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
apparel; flame resistance; protective clothing; radiant heat protection; radiant heat resistance;; ICS Number Code 13.340.10 (Protective clothing)
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March 1, 2015