公开(公告)号：US5749384A

公开(公告)日：1998-05-12

申请号：US409689

申请日：1995-03-24

申请人： Eisaku Hayashi ,  Koichi Kurosawa ,  Fujio Yoshikubo ,  Hideyasu Furukawa ,  Ren Morinaka ,  Kunio Enomoto ,  Masahiro Otaka ,  Noboru Chiba ,  Kazunori Sato

发明人： Eisaku Hayashi ,  Koichi Kurosawa ,  Fujio Yoshikubo ,  Hideyasu Furukawa ,  Ren Morinaka ,  Kunio Enomoto ,  Masahiro Otaka ,  Noboru Chiba ,  Kazunori Sato

IPC分类号： G21D1/00 ,  B08B9/02 ,  B08B9/093 ,  C21D7/06 ,  G21C13/00 ,  G21C13/036 ,  G21C19/02

CPC分类号： B08B9/023 ,  B08B9/093 ,  C21D7/06 ,  G21C13/036 ,  G21Y2002/103 ,  G21Y2004/20 ,  Y02E30/40

摘要： An apparatus preventive maintenance having a driving mechanism capable of driving a jet nozzle 24 to cause it to travel upward-and-downward, to rotate and to swing is settled on the top of a housing in the bottom portion of a reactor pressure vessel and on a hole for a fuel support piece, water pumped by a high pressure pump is spouted from a jet nozzle, and cavitation bubbles generated during the spouting are supplied to the positions to be treated for preventive maintenance, such as housings in the bottom portion of the reactor pressure vessel. Therewith, the residual tensile stress in the position to be treated is improved in a releasing direction by the energy generated by the collapsing of the cavitation bubbles.

摘要翻译： 具有能够驱动喷嘴24以使其上下移动以旋转和摆动的驱动机构的装置预防性维护在反应堆压力容器的底部的壳体的顶部上沉降，并且在 用于燃料支撑件的孔，由高压泵泵送的水从喷嘴喷出，并且在喷射期间产生的空化气泡被供给到预防性维护的待处理位置，例如在底部的壳体 反应堆压力容器。 因此，通过由空化气泡塌缩产生的能量，在待处理位置的残余拉伸应力在释放方向上得到改善。

公开(公告)号：US5119598A

公开(公告)日：1992-06-09

申请号：US590172

申请日：1990-09-28

申请人： Akinori Tajiri ,  Tadao Suzuki ,  Kouichi Ushiroda ,  Hideyasu Furukawa ,  Yasuyoshi Shimazaki ,  Kenji Sekiguchi ,  Keiji Nakanishi ,  Masami Hosoda

发明人： Akinori Tajiri ,  Tadao Suzuki ,  Kouichi Ushiroda ,  Hideyasu Furukawa ,  Yasuyoshi Shimazaki ,  Kenji Sekiguchi ,  Keiji Nakanishi ,  Masami Hosoda

IPC分类号： E04B5/00 ,  G21C13/00

CPC分类号： G21C13/00 ,  Y02E30/40

摘要： A method of constructing a top slab to provide a containment roof over a nuclear-power generating building, in particular, a method for utilizing overhead spaces bounded by a wall of the containment building and a shielding wall of the pressure vessel building, wherein the sequential steps involve; erecting a plurality of paired support columns on tops of the wall and of the shielding wall; building upper structural components across said paired support columns; installing a slab liner equipped with slab anchors beneath said lower structural components by suitable joining means; constucting a reinforcing network above said lower structural components; encasing said lower structural components and said reinforcing network; and pouring concrete over the slab liner to a suitable depth.

摘要翻译： 一种构造顶板以在核能发电建筑物上提供安全壳屋顶的方法，特别是一种利用由密闭建筑物的墙壁和压力容器建筑物的屏蔽壁限定的顶部空间的方法，其中顺序地 步骤涉及; 在壁和屏蔽壁的顶部上竖立多个成对的支撑柱; 在所述成对的支撑柱上建立上部结构部件; 通过适当的接合方式在所述下部结构部件下面安装装有板锚的板坯衬板; 在上述下部结构部件的上方形成加强网络; 包围所述下部结构部件和所述加强网络; 并将混凝土浇筑在板坯衬套上至合适的深度。