OS0903-305 火山灰が堆積したオーステナイト系ステンレス鋼の損傷評価に関する研究

Abstract

Japan has the special feature that there are a lot of natural disasters compared with other country. The volcanic explosion at Mt Fuji has been paid attention recently. If aerosol-like volcanic ash is inhaled from the air intake in those land-based gas turbines, all generators would be stopped and then a blackout would be occurred in the whole Kanto area. In this study, deposition behavior of volcanic ash under a high-temperature gas flow was examined. In order to achieve this purpose, the volcanic ash deposit simulator, which can simulate a combustion flow, was developed. Subsequently, the volcanic ash deposition test was conducted, and a high-temperature exposure test was also performed for the ash-deposited sample.