EFFECTS UPON TANK CREWS OF SEVERAL METHODS OF PROTECTION AGAINST CHEMICAL WARFARE AGENTS
ARMY MEDICAL RESEARCH LAB FORT KNOX KY
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Previous tests have shown that tank crews can be adequately protected against Chemical Warfare Agents by three methods 1 individual combat masks, 2 individual ventilated facepieces supplied with purified air from central motor-blower-canister units and 3 collective protection of the entire tank with purified air under positive-pressure ventilation. The first two methods require the crew to wear impregnated clothing at all times the third method does not require impregnated clothing so long as the tank and protective system are intact. Accepting the fact that the three methods adequately protect against Chemical Warfare Agents, the relative merits of these methods were determined in a field test carried out for the purpose of determining the heat loads and limitations and advantages of the three methods in terms of physiologic effects upon the crew and upon their ability to discharge their duties. The heat load and the respiratory load appeared to impose the greatest stresses. Impairment of vision, interference with the proper use of visual equipment particularly fire control and restriction of movement appeared to constitute the greatest limitations.
- Chemical, Biological and Radiological Warfare
- Escape, Rescue and Survival