同時多発火災リスク評価手法の研究

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In Japan, frequent earthquakes occur. Actually, we had a very big earthquake "Hanshin Kobe Daishinsai" in 1995, at that time, many people lived there were also struck by secondary disasters, fires, which were caused by this big earthquake. It cannot be ignored that the possibility of accident of a nuclear reactor caused by the loss of safety functions, even if the earthquake is not so strong as surpassing the tolerance of equipment. Then it is necessary to establish the assessment method for the risk of fires caused by earthquakes. The purpose of this research is to establish the assessment method for the fire risk caused by earthquakes by using the ideas of Probabilistic Safety Assessment (PSA). For this purpose, we have set four tasks. In Task 1, we obtained detailed, necessary and sufficient information about earthquakes and fires for the fire risk assessment, because scenario is very important. In Task 2 and 3, two codes, a ignition code and a fire progress analysis code, were developed. The ignition code is the code that assesses equipment damages by earthquakes and its possibility of catching fire. On the other hand, the fire progress analysis code simulates the fire started by this ignition. Especially, we made experiments for the fire progress analysis code. These experiments were good use of verification for parameters. In Task 4, we examined these methods developed in this study with the assessment of a sample plant. The results of this study will be useful not only for the assessment of nuclear power plants but also for chemical plants, traffic systems etc.
独立行政法人海上技術安全研究所の論文
2005-04-28

同時多発火災リスク評価手法の研究

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