船舶救命設備の耐熱・耐寒性能評価法に関する研究

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International Convention for the Safety of Life at Sea 1983 requires the cold resistance test for immersion suits by using human subjects in the cold water and the oil fire test for actual fire-protected lifeboats in the pooi on the water surface. But the tests might be dangerous to be done under these severe surroundings, and may cause environmental pollution. Accordingly, the results have to be evaluated in a small number of tests, and must be unreliable. To begin with, general simulation methods of assesing heat and cold resistance of life-saving appliances are proposed, where technical parameters obtained from the simple tests such as model tank tests are considered. Subsequently, assesing methods of thermal protective qualities of immersion suits and fire resistance of fire-protected lifeboat are proposed in great detail through a series of experiments and its analysis. The main results are summarized as follows: 1) Simulation methods of assessing heat and cold resistance are proposed for life-saving appliances. 2) Spectral absorption coefficient of liquid water and absorptance of sprayed water were measured to know the effectiveness of sprayed water over the external surface of lifeboat in a fire. 3) Four kinds of fire tests were conducted in the pooi for the actual lifeboat. The measured temperatures of inside surface of boat and inboard air were in good agreement with the temperatures calculated from the simulation model of heat flow into lifeboat. 4) Simulation method to evaluate fire resistance of lifeboat was proposed without conducting fire test for actual lifeboat. 5) Thermal manikin was developed for measuring thermal resistane of immersion suits. 6) Seventy-six tests by twenty-one human subjects clad in immersion suits were conducted to investigate allowed-time of subjects in the cold water. 7) Thermal resistances of twelve immersion suits were measured with manikin, and correlated with allowed time of subjects in the cold water. 8) Alternative manikin method to evaluate thermal protective qualities of immersion suits was proposed without conducting cold-proof test by human subjects.
独立行政法人海上技術安全研究所の論文
1988-07-30

船舶救命設備の耐熱・耐寒性能評価法に関する研究

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