Development of a Midscale Test for Flame Resistant Protection

Abstract : This report details the development of a novel test for assessment of the flame resistant performance of textiles and garment design details during flame engulfment. It provides step by step information on how to prepare the test apparatus and carry out the test. It also includes a systematic enumeration of the key decisions made during test development. The test employs a propane cell similar to that used for the ASTM F1930, Standard Test Method for Evaluation of Flame Resistant Clothing for Protection against Fire Simulations Using an Instrumented Manikin, which provides both radiant and convective heat flux to produce a realistic flame engulfment fire scenario. The test apparatus can accommodate a range of test forms including an instrumented flat plate, cylinder, head form, and others. The results of the test include transmitted heat flux, fluence, depth of burn, predicted burn injury, and Energy Transmission Factor measured at each heat flux sensor to characterize the protection provided. A standard ASTM test method for the Midscale Test for FR Protection is under development.