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1. 发明授权

EP3010024B1 TUBULAR BODY AND METHOD FOR MANUFACTURING TUBULAR BODY 有权
标题翻译：管状体和制造管状体的方法
公开(公告)号：EP3010024B1
公开(公告)日：2017-11-08
申请号：EP13886864.1
申请日：2013-06-12
申请人： Hitachi, Ltd.
发明人： ISHIBASHI, Ryou , HINO, Tetsushi , KITO, Kazuaki , KAMOSHIDA, Mamoru , CHAKI, Masao , AOYAMA, Motoo , NAKANO, Hiroshi , TAKAHASHI, Katsuhito , HASHIMOTO, Tsuneyuki , KAWAMURA, Toshinori , SEKIHARA, Masaru , NAKANE, Motoki
IPC分类号： G21C3/06 , C04B35/80 , C04B41/89 , G21C3/326
CPC分类号： C04B41/52 , C04B35/565 , C04B35/806 , C04B37/021 , C04B41/009 , C04B41/90 , C04B2235/5244 , C04B2235/94 , C04B2237/365 , C04B2237/40 , G21C3/07 , G21C3/17 , Y02E30/40 , C04B41/457 , C04B41/4572 , C04B41/51 , C04B41/4529 , C04B41/4574 , C04B41/5059 , C04B41/5024

2. 发明公开

EP3062312A1 NUCLEAR REACTOR CORE 审中-公开
标题翻译： KERN EINES KERNREAKTORS
公开(公告)号：EP3062312A1
公开(公告)日：2016-08-31
申请号：EP13896080.2
申请日：2013-10-21
申请人： Hitachi, Ltd.
发明人： MITSUYASU, Takeshi , AOYAMA, Motoo
IPC分类号： G21C5/18 , G21C5/00
CPC分类号： G21C5/18 , G21C1/084 , G21C5/00 , G21D3/001 , G21D2003/002 , G21Y2002/201 , G21Y2004/30 , Y02E30/40
摘要： The initial-core economical efficiency is improved by loading the medium enriched fuel in the peripheral or lacing it adjacent to the low enriched fuel and the highly enriched fuel. According to the present invention, in an initial core of a Boiling Water Reactor loaded with at least three types of fuel including highly enriched fuel with a fission-material content of 3.0wt% or more, medium enriched fuel with a fission-material content of a range from 1.5wt% or more to less than 3.0wt%, and low enriched fuel with a fission-material content of less than 1.5wt%, when a region of an outermost peripheral of a core occupied by the fuel having no face adjoining another fuel in a horizontal direction is defined as an outermost peripheral region, a region outside a line at 80% of a radius of a circumcircle of the core and except for the outermost peripheral region is defined as a peripheral region and the remainder is defined as an inner region, 50% or more of the fuel loaded in the peripheral region is the medium enriched fuel.
摘要翻译：通过将富含介质的燃料装载在周边或将其附加到低浓度燃料和高浓缩燃料上来提高初始核心经济效率。根据本发明，在装有至少三种类型燃料的沸水反应堆的初始核心中，包括裂变材料含量为3.0wt％或更高的富含高浓度燃料，具有裂变材料含量的中等浓度燃料在1.5重量％以上至小于3.0重量％的范围内，以及当燃料所占据的核的最外周的区域没有面临相邻时，裂解材料含量小于1.5重量％的低浓度燃料将水平方向上的另一种燃料定义为最外周区域，将芯的外接圆的半径的80％以外的直线以外的区域除外周区域作为周边区域，其余部分定义为内部区域，装载在周边区域中的燃料的50％以上是富集燃料的燃料。

3. 发明公开

EP3608919A1 FUEL ASSEMBLY AND METHOD FOR PRODUCING FUEL ASSEMBLY 有权
公开(公告)号：EP3608919A1
公开(公告)日：2020-02-12
申请号：EP18781209.4
申请日：2018-02-21
申请人： Hitachi, Ltd.
发明人： MITSUYASU, Takeshi , AOYAMA, Motoo , ONO, Michitaka
IPC分类号： G21C3/328
摘要： There is provided a fuel assembly and a method for producing the same that can ensure safety of a fuel production process and effectively utilize recovered uranium after reprocessing while using fuel having a uranium enrichment exceeding 5 wt% for the purpose of a high burnup. The fuel assembly includes a plurality of fuel rods containing uranium, in which at least one fuel rod among the plurality of fuel rods has a content of uranium 236 with respect to uranium 235 in a range defined by expression (1): U 236 U 235 ≥ − 0.006951 e 3 + 0.223385 e 2 − 1.591844 ⁢ e + 3.243469 and expression (2): U 236 U 235 ≤ 0.3975 e 2 − 3.4946 ⁢ e + 7.5355 where e is a uranium 235 enrichment.

4. 发明公开

EP3422359A1 FUEL ASSEMBLY AND REACTOR CORE INTO WHICH SAME IS LOADED 有权
公开(公告)号：EP3422359A1
公开(公告)日：2019-01-02
申请号：EP16891426.5
申请日：2016-02-23
申请人： Hitachi, Ltd.
发明人： MITSUYASU, Takeshi , AOYAMA, Motoo
IPC分类号： G21C3/328 , G21C3/62
摘要： A fuel assembly capable of linearizing change of an infinite multiplication factor of a fuel and flattening excess reactivity while increasing average fissile plutonium enrichment of a MOX fuel, and a reactor loaded with the fuel assembly can be provided.
A fuel assembly 1 includes first fuel rods (21a to 21c, and 31a) containing Pu and not containing burnable poison, a second fuel rod 41 containing uranium and burnable poison and not containing Pu, a water rod WR, and a channel box 7 accommodating the first and second fuel rods and the water rod in a bundle. The second fuel rod is disposed on an outermost periphery and/or adjacent to the water rod, of a fuel rod array in a horizontal section, N2

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