Standard Test Method for Radiant Heat Resistance of Flame Resistant Clothing Materials with Continuous Heating. This revision is to address a persuasive negative from the F23 (13-01) ballot (F1939 revalidation) by Harry Winer. He noted that an earlier study of instrument performance (done around 1980) showed that the age of the lamps and the variation of the color temperatures of the lamps in the array could affect the results. At 80 kW/m2 [1.9 cal/cm2s], the study noted that due to closeness of the test sample to the quartz lamp array, large differences in color temperatures resulted in a significant bias for the measured specimen performance. Essentially, the new text addresses radiant quartz lamp output quality (uniformity), calibration, and fitness for use.
Keywordsapparel; flame resistance; protective clothing; radiant heat protection; radiant heat resistance; Burning characteristics--textile materials/products; Flame-resistant (FR) clothing/materials; Performance--protective clothing/materials applications; Protective clothing; Radiant protective performance;
Ballot Item Approved as F1939-2015 and Pending Publication