| 发明名称 | Holding device | ||
| 摘要 | There is provided a holding device which can hold a molten corium for a predetermined period even when the molten corium is exposed to heat or undergoes any chemical reaction and which is applicable to practical use. There is provided a holding device provided below a nuclear reactor pressure vessel for holding a molten corium, wherein the holding device includes a base material in contact with a cooling medium, and a multilayer stack structure on the base material. The multilayer stack structure has a first layer having heat-resistant property, a second layer formed on the first layer and having heat-resistant property with lower heat conductivity than that of the first layer, and a third layer formed on the second layer and having corrosion-resistant property and impact-absorbing property. | ||
| 申请公布号 | US9025721(B2) | 申请公布日期 | 2015.05.05 |
| 申请号 | US201213618641 | 申请日期 | 2012.09.14 |
| 申请人 | Kabushiki Kaisha Toshiba | 发明人 | Wada Kunihiko;Kuno Fumiyo;Ishiwata Yutaka;Kameda Tsuneji;Hamazaki Ryoichi;Katagiri Noriyuki |
| 分类号 | G21C9/00;G21C9/016 | 主分类号 | G21C9/00 |
| 代理机构 | Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. | 代理人 | Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. |
| 主权项 | 1. A holding device provided below a nuclear reactor pressure vessel for holding a molten corium, comprising: a base material configured to contact with a cooling medium; a first layer made of ceramic material formed on the base material, the first layer having heat-resistant property; a second layer made of ceramic material formed on the first layer, the second layer having higher porosity than porosity of the first layer so as to have lower heat conductivity than heat conductivity of the first layer, the second layer having porosity from 10 mass % to 60 mass %; and a third layer formed on the second layer, the third layer having corrosion-resistant property and impact-absorbing property. | ||
| 地址 | Tokyo JP | ||