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1. 发明授权

EP0284016B1 Fuel assembly 失效
标题翻译：燃油总成
公开(公告)号：EP0284016B1
公开(公告)日：1992-01-29
申请号：EP88104556.1
申请日：1988-03-22
申请人： HITACHI, LTD.
发明人： Aoyama, Motoo , Bessho, Yasunori , Uchikawa, Sadao , Takeda, Renzo , Ishii, Yoshihiko
IPC分类号： G21C3/00
CPC分类号： G21C3/322 , G21C2003/3225 , G21Y2002/201 , G21Y2004/30 , Y02E30/38

2. 发明授权

EP1384991B1 CT apparatus, CT imaging method and method of providing service using the same 有权
标题翻译： CT扫描仪，CT成像方法和它们在服务的方法使用
公开(公告)号：EP1384991B1
公开(公告)日：2007-03-14
申请号：EP03011047.2
申请日：2003-05-20
申请人： Hitachi, Ltd.
发明人： Takagi, Tarou, , Kamimura, Hiroshi , Uchikawa, Sadao
IPC分类号： G01N23/04 , G06T7/00
CPC分类号： G06K9/3216 , G01N23/046 , G01N2223/419 , G06K2009/3225 , G06K2209/05 , G06T7/73 , G06T2207/30004

3. 发明授权

EP0389219B1 Nuclear fuel assemblies and reactor cores including them 失效
标题翻译：核燃料组件和这些含反应堆芯
公开(公告)号：EP0389219B1
公开(公告)日：1995-12-20
申请号：EP90302927.0
申请日：1990-03-19
申请人： HITACHI, LTD.
发明人： Koyama, Junichi , Aoyama, Motoo , Nakajima, Akinobu , Bessho, Yasunori , Yamashita, Junichi , Uchikawa, Sadao , Maruyama, Hiromi , Ozawa, Michihiro , Nakamura, Mitsunari
IPC分类号： G21C3/326
CPC分类号： G21C3/326 , G21Y2002/201 , G21Y2004/30 , Y02E30/38

4. 发明公开

EP0315929A3 Fuel assembly 失效
标题翻译：燃油总成
公开(公告)号：EP0315929A3
公开(公告)日：1990-03-07
申请号：EP88118513.6
申请日：1988-11-07
申请人： HITACHI, LTD.
发明人： Aoyama, Motoo , Koyama, Junichi , Uchikawa, Sadao , Bessho, Yasunori , Ozawa, Michihiro , Nakamura, Mitsunari , Nakajima, Akinobu , Maruyama, Hiromi
IPC分类号： G21C3/32
CPC分类号： G21C3/326 , G21Y2002/201 , G21Y2004/30 , Y02E30/38
摘要： A fuel assembly has a plurality of first fuel rods (1 to 4, 22 and 23, 31 to 34) each of which contains nuclear fuel material but does not contain burnable poison, and a plurality of second fuel rods (G₁ to G₁₁) each of which includes nuclear fuel material and burnable poison. The amount of burnable poison in a lower region of the fuel assembly is smaller than that in an upper region thereof. When each of the second fuel rods is divided into an upper region and a lower region, a region of the divided regions in the second fuel rods containing a maximum burnable poison concentration Gmax and a region of the divided regions in the second fuel rods containing a minimum burnable poison concentration Gmin are located in the lower region of the fuel assembly. The burnable poison concentration of the upper region of each second fuel rod is between Gmax and Gmin. The fuel assembly may moderate a maximum linear heat rating with an increased spectral shift effect.

5. 发明公开

EP0283935A3 Nuclear fuel assembly 失效
标题翻译：核燃料组件
公开(公告)号：EP0283935A3
公开(公告)日：1989-11-08
申请号：EP88104261.8
申请日：1988-03-17
申请人： HITACHI, LTD.
发明人： Masuhara, Yasuhiro , Yokomizo, Osamu , Inoue, Kotaro , Uchikawa, Sadao , Aoyama, Motoo , Yamashita, Junichi , Yoshimoto, Yuichiro , Yasuda, Tetsuo , Hirakawa, Hiromasa
IPC分类号： G21C3/32
CPC分类号： G21C3/322 , G21C2003/3225 , G21Y2002/201 , G21Y2004/30 , Y02E30/38
摘要： Herein disclosed is a fuel assembly which includes a plurality of fuel rods (2) and water rods (3). The sum A w (cm²) of the cross sectional areas of the water rods (3) in the fuel assembly, the cross-sectional area A CH (cm²) of the fuel assembly (7), the sum A rod (cm²) of the cross-sectional areas of the fuel rods (2) in the fuel assembly and the cladding thickness δ (mm) are set so that the ratio A rod /A CH satisfies the following three formulas:
(A rod /A CH )
≦ -1.050 (A W /A CH ) + 0.469;
(A rod /A CH )
≦ (0.337δ + 0.1421)(A W /A CH ) + 0.0804δ + 0.302;
and
(A rod /A CH )
> (-0.0428δ - 0.0359) × (A W /A CH ) + 0.1449δ + 0.2745.
Thus, it is possible to augment the stability margin of the fuel assembly and to reduce the fuel cycle cost drastically.
摘要翻译：本文公开了一种包括多个燃料棒（2）和水棒（3）的燃料组件。燃料组件中的水杆（3）的横截面积的总和Aw（cm 2），燃料组件的横截面积ACH（cm 2），横截面面积的总和（cm 2）燃料组件中的燃料棒（2）的横截面积和包层厚度δ（mm）被设定为使得比值Arod / ACH满足以下三个公式：（Arod / ACH）≤-1.050（AW / ACH）+ 0.469; （Arod / ACH）≤（0.337δ+ 0.1421）（AW / ACH）+0.0804δ+ 0.302; 和（Arod / ACH）>（ - 0.0428δ-0.0359）×（AW / ACH）+0.1449δ+ 0.2745。因此，可以增加燃料组件的稳定裕度并大幅降低燃料循环成本。

6. 发明公开

EP0136709A2 Fuel assembly 失效
标题翻译：燃料组件。
公开(公告)号：EP0136709A2
公开(公告)日：1985-04-10
申请号：EP84111828.4
申请日：1984-10-03
申请人： HITACHI, LTD.
发明人： Aoyama, Motoo 4-103, Ishinazaka-Apartment House , Maruyama, Hiromi , Umegaki, Kikuo , Uchikawa, Sadao
IPC分类号： G21C3/32
CPC分类号： G21C3/328 , G21Y2002/201 , G21Y2004/10 , G21Y2004/30 , G21Y2004/60 , Y02E30/38
摘要： A fuel assembly having a plurality of fuel rods arranged in a lattice state and being charged into a core of a nuclear reactor using light water as a coolant, which comprises the fuel rods consisting of a first group of fuel rods and a second group of fuel rods, an average concentration of U 236 in the first group being lower than an average concentration of U 236 in the second group, and the first group and the second group being arranged unevenly in the fuel assembly, preferably, a fuel assembly wherein the first group is arranged at the peripheral side of the fuel assembly, and the second group being arranged at the other position than the peripheral side, has a low reactivity penalty due to U 236 and can reduce the requirements for natural uranium.

7. 发明授权

EP0315929B1 Fuel assembly 失效
标题翻译：燃料组件
公开(公告)号：EP0315929B1
公开(公告)日：1996-02-07
申请号：EP88118513.6
申请日：1988-11-07
申请人： HITACHI, LTD.
发明人： Aoyama, Motoo , Koyama, Junichi , Uchikawa, Sadao , Bessho, Yasunori , Ozawa, Michihiro , Nakamura, Mitsunari , Nakajima, Akinobu , Maruyama, Hiromi
IPC分类号： G21C3/32
CPC分类号： G21C3/326 , G21Y2002/201 , G21Y2004/30 , Y02E30/38

8. 发明授权

EP0184134B1 Method of operating of a light water moderated and cooled nuclear reactor 失效
标题翻译：一种轻水改性和冷却核反应堆的操作方法
公开(公告)号：EP0184134B1
公开(公告)日：1990-03-28
申请号：EP85115059.9
申请日：1985-11-27
申请人： HITACHI, LTD.
发明人： Takeda, Renzo , Kato, Kanji , Ohnishi, Tadahiro , Uchikawa, Sadao , Maruyama, Hiromi , Aoyama, Motoo , Umegaki, Kikuo , Bessho, Yasunori , Fuse, Motomasa , Yokomi, Michiro
IPC分类号： G21C5/18
CPC分类号： G21C5/18 , Y02E30/40

9. 发明授权

EP0199197B1 Fuel assembly 失效
标题翻译：燃料组件
公开(公告)号：EP0199197B1
公开(公告)日：1989-01-04
申请号：EP86104919.5
申请日：1986-04-10
申请人： HITACHI, LTD.
发明人： Aoyama, Motoo , Maruyama, Hiromi , Bessho, Yasunori , Uchikawa, Sadao
IPC分类号： G21C3/32
CPC分类号： G21C3/328 , G21Y2002/201 , G21Y2002/301 , G21Y2004/10 , G21Y2004/30 , Y02E30/38 , Y10S376/903 , Y10S376/917

10. 发明公开

EP0257337A1 Fuel assembly and nuclear reactor 失效
标题翻译： Brennstoffanordnung und Kernreaktor。
公开(公告)号：EP0257337A1
公开(公告)日：1988-03-02
申请号：EP87111042.5
申请日：1987-07-30
申请人： HITACHI, LTD.
发明人： Morimoto, Yuichi , Maruyama, Hiromi , Aoyama, Motoo , Zukeran, Atsushi , Bessho, Yasunori , Matsumoto, Tomoyuki , Ishii, Yoshihiko , Fujimura, Kouji , Uchikawa, Sadao
IPC分类号： G21C3/00
CPC分类号： G21C3/328 , G21Y2002/20 , G21Y2004/10 , G21Y2004/30 , Y02E30/38
摘要： A fuel assembly (A1; A2; A3) is composed of first fuel rods (15B) containing nuclear fuel material and burnable poison material and second fuel rods (15A) containing nuclear fuel material but no burnable poison material. The fuel assembly (A1; A2; A3) is charged in a high conversion area (59) of a boiling water type nuclear reactor (50) having a reactor core (58) having the high conversion area (59) and a burner area (60) surrounding the high conversion area (59). A ratio V C /V F is not greater than 1.5 in the fuel assembly (A1; A2; A3) where V c is the volume occupied by coolant flow paths and V F is the volume occupied by the nuclear fuel material per unit length in an axial direction of the fuel assembly (A1; A2; A3). In addition, the burnable poison material is composed of neutron absorption nuclides having at least one resonant energy in a neutron energy region of one electron volt or less.
摘要翻译：燃料组件（A1; A2; A3）由包含核燃料材料和可燃毒物的第一燃料棒（15B）和包含核燃料材料但不含可燃毒物的第二燃料棒（15A）组成。将燃料组件（A1; A2; A3）装入具有高转换区域（59）的反应堆堆芯（58）和燃烧器区域（59）的沸水型核反应堆（50）的高转化区域（59）围绕高转换区域（59）。燃料组件（A1; A2; A3）中的VC / VF的比率不大于1.5，其中VC是冷却剂流动路径占据的体积，VF是每单位长度在轴向上的核燃料材料占据的体积燃料组件（A1; A2; A3）。此外，可燃毒物由中子吸收核素组成，中子吸收核素在一个电子伏特以下的中子能区域具有至少一个共振能。

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