Title:
原子炉格納容器内ドレンサンプ
Document Type and Number:
Japanese Patent JP6393744
Kind Code:
B2
Abstract:
A nuclear-reactor-containment-vessel drain sump (9) formed through digging into a portion of the floor (10) of a lower dry well (5) in the lower part of a nuclear reactor pressure vessel (2) is provided with a vessel-shaped cover (11) defining an outer shell and a water path (15) for guiding drain water from the lower dry well (5) to the inside of the cover (11). The water path (15) extends along the floor (10) of the lower dry well (5), is provided with a flow path expansion part (17), and is such that the flow path width is wider on a drain water inlet side than on a drain water outlet side. As a result, it is possible to slow the progression of a molten core spread on the floor of the lower dry well, suppress the inflow of the molten core, keep the molten core in the lower dry well, and effectively cool the molten core using cooling water.
More Like This:
| JP2012020260 | APPARATUS FOR REMOVING FOREIGN MATTER IN SEAWATER |
| JPS58170611 | 【考案の名称】圧力容器の内部検査装置 |
Inventors:
Ken Sakai
Tadashi Fujii
Tadashi Fujii
Application Number:
JP2016510065A
Publication Date:
September 19, 2018
Filing Date:
January 09, 2015
Export Citation:
Assignee:
Hitachi ge Nuclear Energy Co., Ltd.
International Classes:
G21D1/00; G21C9/016
Domestic Patent References:
| JP7140288A | ||||
| JP2011007613A |
Foreign References:
| US5402456 |
Attorney, Agent or Firm:
Yuji Toda
Previous Patent: グラフェン強化ポリマーマトリクス複合体を製造するためのｉｎｓｉｔｕ...
Next Patent: PRODUCTION OF M-HYDROXYBENZALDEHYDE
Next Patent: PRODUCTION OF M-HYDROXYBENZALDEHYDE