1.1 This test method is used to measure the convective thermal protective performance of up to six layers of textile materials. 1.1.1 Convective thermocouple response is measured at the exterior between all layers and at the inside of the innermost layer. 1.2 This test method shall be used to measure and describe the response of materials, products, or assemblies to high convective heat under controlled laboratory conditions and shall not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. 1.3 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 to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.4 NOTE 1-The flame resistance of the materials shall be determined before testing. If the materials are not flame resistant, care should be taken to keep the temperature below the softening point of the materials.
Today, we evaluate/measure fire resistance by either radiant heat or a combination of radiant flame impingement. Until the development of this equipment, we were unable to measure the ability of a single layer or a composite strictly against convective heat. Convective heat is the everyday type of heat that a fire fighter is exposed to when entering a burning building. This new test method will be a tool in developing improved fire fighters clothing. You will be able to evaluate the heat as it passes through every layer.
Keywordsconvective heat; thermal performance; heat resistance; heat transmission
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top