| 发明名称 |
Fuel assembly and reactor core |
| 摘要 |
A fuel assembly of the present invention comprises fuel rods which are arranged in 9 rows and 9 columns (9x9) in a channel box. The channel box has a width L between outer walls thereof and a width D between inner walls thereof, both of which satisfy the following equation: 0.12</=(P-L)/D wherein P denotes the fuel assembly pitch in a reactor core. A sufficient cold shutdown margin for a reactor core can be secured by determining the widths L and D so as to satisfy the above-described equation, even if the average enrichment of the fuel assembly is increased to 4 wt % or more.
|
| 申请公布号 |
US4871510(A) |
申请公布日期 |
1989.10.03 |
| 申请号 |
US19880178902 |
申请日期 |
1988.04.07 |
| 申请人 |
HITACHI, LTD. |
发明人 |
AOYAMA, MOTOO;TAKEDA, RENZO |
| 分类号 |
G21C3/328;G21C3/322;G21C3/324 |
主分类号 |
G21C3/328 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
