発電プラントにおける高温高圧流体の漏洩を想定した人体への衝撃影響評価

抄録

Assuming damage to the piping system due to deterioration or damage at a power plant site, the fluid held inside the system will be dispersed into the surrounding area, which may affect the function of peripheral equipment and work safety at the site. In particular, if the piping is held under high pressure, the high-speed impact of the leaked fluid may increase operational risks due to external injuries. In this study, among the indicators that contribute to the importance of maintenance, we focused on human external wounds, which can be a risk to work safety, and conducted experiments to measure the impinging pressure of jets under various flow conditions. The obtained experimental data were assigned to the AIS (Abbreviated Injury Scale) model to evaluate the probability of a serious injury level when a jet impinged a human body. The results suggest that low-temperature water with high fluid density, in particular, has a relatively higher risk of serious injury due to external wounds than high-temperature steam or flashing.