Methods of Assessing Thermal Protective Qualities of Immersion Suits

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  • イマーションスーツの耐寒性能評価法
  • イマーションスーツ ノ タイカン セイノウ ヒョウカホウ

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This paper deals with the methods of assessing thermal protective qualities of immersion suits which shall be fitted for the ships under Chapter III of 1983 SOLAS, and for the crew of fishing boats in the course of cold water of their voyage. The Rule requires the test for thermal protective qualities of immersion suits by using human subjects in the water of 0℃ for 6 hours. But, such a test is dangerous to be done for the subjects, and not reasonable to get reliable results for the reason of the diversity of coldproof property of subjects. The developed thermal manikin was used for measuring thermal resistance of immersion suits in the air and water. Seventy six tests by 21 subjects clothed in the immersion suits were conducted to investigate the allowed time in the cold water. Thermal resistance of immersion suits measured with manikin was correlated with allowed time of subjects in the cold water. The thermal protective qualities of immersion suits for the prototype test can be properly evaluated with the thermal manikin, not with the subjects.

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