发明名称 |
Core loading strategy |
摘要 |
A core of boiling water reactor is divided into a central region and a peripheral region surrounding it in the radial direction thereof. The loading fraction of new first fuel assemblies containing burnable poison and loaded in the central region is greater than the loading fraction of the new first fuel assemblies loaded in the peripheral region. The loading fraction of second fuel assemblies loaded in the central region of the core and operating in a second operation cycle is smaller than the loading fraction of the second fuel assemblies loaded in the peripheral region of the core and operating in the second operation cycle. The second fuel assemblies contain no burnable poison. In such a core, the reactivity of the peripheral region is greater than that of the central region in the beginning of an operation cycle. Contrary, the reactivity of the central region is greater than that of the peripheral region in the end of an operation cycle.
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申请公布号 |
US5093070(A) |
申请公布日期 |
1992.03.03 |
申请号 |
US19890448209 |
申请日期 |
1989.12.08 |
申请人 |
HITACHI, LTD. |
发明人 |
KOYAMA, JUNICHI;AOYAMA, MOTOO;NAKAJIMA, AKINOBU;MARUYAMA, HIROMI |
分类号 |
G21C5/00;G21C5/18;G21C7/00;G21C19/20 |
主分类号 |
G21C5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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