Study to Determine Optimum Fire Protective Garments

  1. Crown, E.M.
  2. Dale, J.D.
  3. Rigkis, K.B.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Alberta Univ, Edmonton ALTA (CAN) Dept of Human Ecology
The purpose of this research was to design and evaluate garment systems for optimum thermal protection for Canadian military flight personnel, and to determine the effect of garment design parameters on thermal protection. The research followed a functional design process which incorporated an extensive literature search, material analysis, focused group interviews and movement analysis to develop design critera and specifications for alternative flightsuits. Eight different flightsuits which incorporated variation on four parameters of interest (one-piece vs two-piece style, loosed vs close fit, closure system and seam type) were desgined, made up in a Nomex™ IIIA fabric, and tested without underwear on an instrumented mannequin exposed to an average heat flux of 75 KW/square m for 3.5 seconds. In a second round of testing, modified designs incorporating the best features of the first round garments were made up in a FR rayon/aramid fabric and tested without underwear at the same conditions. In a third round, garments were made up in these two fabrics as well as a lighter-weight Nomex™ IIIPBI™ fabric and tested with underwear at the same heat flux, but for both 3.5 and 4.5 second exposures. It is concluded that the best assurance of thermnal protection is to ensure that flight personnel wear long protective underwear under the flightsuits at all times.
Nomex;Thermal protection;Thermal protective clothing;Thermally instrumented mannequins;Military flightsuits;Garment systems;Flame retardant materials
Date of publication
01 Nov 1993
Number of Pages
Hardcopy;Originator's fiche received by DSIS

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