公开(公告)号：US4963200A

公开(公告)日：1990-10-16

申请号：US338932

申请日：1989-04-11

申请人： Takanari Okuda ,  Shigeo Nomura ,  Itaru Shibahara ,  Yuji Enokido ,  Masayuki Fujiwara ,  Toshio Nishida ,  Hiroshi Teranishi ,  Susumu Hirano ,  Aturou Iseda ,  Motoharu Nakajima

发明人： Takanari Okuda ,  Shigeo Nomura ,  Itaru Shibahara ,  Yuji Enokido ,  Masayuki Fujiwara ,  Toshio Nishida ,  Hiroshi Teranishi ,  Susumu Hirano ,  Aturou Iseda ,  Motoharu Nakajima

IPC分类号： C22C32/00 ,  C22C33/02

CPC分类号： C22C33/0228 ,  C22C32/0026 ,  C22C33/0285 ,  B22F2003/208 ,  B22F2003/248 ,  B22F2009/041 ,  B22F2998/10

摘要： A dispersion strenghened ferritic steel having excellent ductility and toughness which has been heat treated to produce a matrix having a tempered martensitic structure composed of 0.05 to 0.25% by weight of carbon, 0.1% by weight or less of silicon , 0.1% by weight or less of manganese, 8 to 12% by weight of chromium, 0.1 to 4.0% by weight in total of molybdenum and tungsten, and 0.02% by weight or less of oxygen (exclusive of oxide particles) with the balance being iron and inevitable impurities and, homogeneously dispersed in the matrix, composite oxide particles comprising Y.sub.2 O.sub.3 and TiO.sub.2 in an amount of 0.1 to 1.0% by weight in total of Y.sub.2 O.sub.3 and TiO.sub.2 and a TiO.sub.2 to Y.sub.2 O.sub.3 molar ratio of 0.5 to 2.0.

摘要翻译： 分散强化了具有优异的延展性和韧性的铁素体钢，其经过热处理以制备具有由0.05-0.25重量％的碳，0.1重量％或更少的硅，0.1重量％以下的回火马氏体组成的基体 的锰，8〜12重量％的铬，0.1〜4.0重量％的钼和钨，0.02重量％以下的氧（不包含氧化物粒子），余量为铁和不可避免的杂质， 均匀分散在基质中，包含Y2O3和TiO2的总重量为0.1〜1.0重量％，TiO 2与Y 2 O 3摩尔比为0.5〜2.0的Y2O3和TiO2的复合氧化物粒子。

公开(公告)号：US5638414A

公开(公告)日：1997-06-10

申请号：US631128

申请日：1996-04-12

申请人： Yuji Enokido ,  Kuniaki Ara ,  Hiroshi Hiroi

发明人： Yuji Enokido ,  Kuniaki Ara ,  Hiroshi Hiroi

IPC分类号： G21C17/06 ,  G21C17/07 ,  G21C17/00

CPC分类号： G21C17/07 ,  G21Y2002/201 ,  G21Y2002/204 ,  G21Y2004/403

摘要： The present invention provides a method for identifying failed fuel elements and the scale of damage accurately, quickly and at low cost without disassembling a fuel assembly and without discharging radioactive waste. Radiation detector(s) for measurement of gamma radiation emitted from surface of the irradiated fuel assembly and the fuel assembly are rotated and translated relative to each other, the dectected data of the radiation emitted from the surface of the fuel assembly is acquired, processed, a tomographic image is constructed from the radiation intensity distribution and is prepared and displayed, and a failed fuel element is finally confirmed from the tomographic image of the fuel assembly cross-section.

摘要翻译： 本发明提供了一种用于在不拆卸燃料组件并且不排放放射性废物的情况下，快速且低成本地识别故障燃料元件和损坏规模的方法。 用于测量从被照射的燃料组件和燃料组件的表面发射的γ辐射的辐射检测器相对于彼此旋转和平移，从燃料组件的表面发射的辐射的被检测数据被获取， 根据辐射强度分布构建断层图像，并且准备和显示，并且从燃料组件横截面的断层图像中最终确认失效的燃料元件。