公开(公告)号：US5343506A

公开(公告)日：1994-08-30

申请号：US80405

申请日：1993-06-21

申请人： Josef Artnik ,  Dietmar Bittermann ,  Jurgen Eyink ,  Ulrich Fischer ,  Andreas Gobel ,  Sieghard Hellmann ,  Wolfgang Kohler ,  Walter Korn ,  Hermann Plank ,  Manfred Scholz ,  Horst Weisshaupl

发明人： Josef Artnik ,  Dietmar Bittermann ,  Jurgen Eyink ,  Ulrich Fischer ,  Andreas Gobel ,  Sieghard Hellmann ,  Wolfgang Kohler ,  Walter Korn ,  Hermann Plank ,  Manfred Scholz ,  Horst Weisshaupl

IPC分类号： G21C9/016 ,  B01F5/06 ,  F28F3/04 ,  G21C15/18

CPC分类号： G21C15/18 ,  B01F5/061 ,  F28F3/04 ,  G21C9/016 ,  Y02E30/40

摘要： A nuclear reactor installation includes a reactor pressure vessel and a reactor core in the reactor pressure vessel. A supporting and protective structure supporting the reactor pressure vessel and surrounding the reactor pressure vessel on the bottom and laterally, has a bottom region and a circumferential wall. A core catcher device for the reactor core has a collecting basin for a core melt being installed below the reactor pressure vessel. The collecting basin has a bottom wall and a jacket wall being respectively separated from the bottom region and the circumferential wall of the supporting and protective structure by a spacing gap. Cooling channels are disposed in the spacing gap at the bottom wall and the jacket wall for exterior cooling of the collecting basin with a cooling liquid. Turbulence bodies are disposed in a surface region of the bottom wall for generating a turbulent flow of the cooling liquid flowing from the inside to the outside over the bottom wall toward the jacket wall. There is also a method for starting and maintaining exterior cooling of a core catcher device of a nuclear reactor installation.

摘要翻译： 核反应堆装置包括反应堆压力容器和反应堆压力容器中的反应堆堆芯。 支撑反应堆压力容器并且围绕反应器压力容器在底部和侧面的支撑和保护结构具有底部区域和周向壁。 用于反应堆芯的核心捕集装置具有用于芯熔体的集水池，其被安装在反应堆压力容器下方。 收集池具有底壁和夹套壁，分别通过间隔间隙从支撑和保护结构的底部区域和周壁分开。 冷却通道设置在底壁和夹套壁上的间隔间隙中，用于冷却液体的收集池的外部冷却。 湍流体设置在底壁的表面区域中，用于产生冷却液从内侧向外侧流过底壁朝向夹套壁的湍流。 还有一种用于启动和维持核反应堆装置的核心捕集装置的外部冷却的方法。

公开(公告)号：US4816193A

公开(公告)日：1989-03-28

申请号：US99687

申请日：1987-09-18

申请人： Martin Peehs ,  Heinrich Bayer ,  Ulrich Jenczio ,  Jurgen Laucht ,  Sieghard Hellmann ,  Gerhard Dichtjar ,  Wolfgang Dorr ,  Georg Maier

发明人： Martin Peehs ,  Heinrich Bayer ,  Ulrich Jenczio ,  Jurgen Laucht ,  Sieghard Hellmann ,  Gerhard Dichtjar ,  Wolfgang Dorr ,  Georg Maier

IPC分类号： G21C3/62 ,  G21C21/00 ,  C09K11/04 ,  G21G4/00

CPC分类号： G21C3/623 ,  Y02E30/38

摘要： Method for manufacturing sintered oxidic nuclear fuel bodies by molding uranium oxide starting powder, a mixture of uranium oxide and plutonium oxide starting powder or of uranium-plutonium oxide mixed-crystal starting powder to form blanks and by a heat treatment of these blanks with a U.sub.4 O.sub.9 or (U, Pu).sub.4 O.sub.9 crystal phase developed in them to a degree which can be crystallographically detected at a sintering temperature in the range of 1000.degree. to 1400.degree. C. in an oxidizing and subsequently in a reducing gas atmosphere. The starting powder and/or the blanks are preroasted at a roasting temperature below the sintering temperature in a roasting gas atmosphere with oxidizing action and with an oxygen potential in which the U.sub.4 O.sub.9 (U, Pu).sub.4 O.sub.9 crystal phase is developed and cooled down subsequently to a starting temperature below the roasting temperature in an inert or oxidizing cooling-down gas atmosphere. Starting from this starting temperature, the blanks are heated to the sintering temperature in an inert or oxidizing heating gas atmosphere while maintaining the U.sub.4 O.sub.9 or the (U, Pu).sub.4 O.sub.9 crystal phase.

摘要翻译： 通过模制氧化铀原料粉末，氧化铀和钚氧化物起始粉末或铀 - 钚氧化物混合起始粉末的混合物来形成烧结氧化物核燃料体的方法以形成坯料并且通过用U4O9热处理这些坯料 或（U，Pu）4 O 9结晶相在一定程度上可以在氧化并随后在还原气体气氛中在1000-1400℃范围内的烧结温度下进行晶体学检测。 起始粉末和/或坯料在具有氧化作用的焙烧气体气氛中的焙烧温度下焙烧，并且其中U4O9（U，Pu）4 O9晶相的氧电位被开发并随后冷却 在惰性或氧化冷却气氛中的起始温度低于焙烧温度。 从该起始温度开始，将坯料在惰性或氧化加热气体气氛中加热至烧结温度，同时保持U4O9或（U，Pu）4 O9晶相。