公开(公告)号：US06757351B1

公开(公告)日：2004-06-29

申请号：US09232897

申请日：1999-01-15

申请人： Perng-Fei Gou ,  Craig D. Sawyer ,  Larry E. Fennern

发明人： Perng-Fei Gou ,  Craig D. Sawyer ,  Larry E. Fennern

IPC分类号： G21C13093

CPC分类号： G21C13/093 ,  G21Y2002/303 ,  G21Y2002/304 ,  G21Y2004/30 ,  Y02E30/40

摘要： The present invention, in one form, is a natural circulation reactor having, in one embodiment, a layer of high aluminate cement concrete disposed between an uninsulated steel liner and a prestressed concrete reactor vessel. The prestressed concrete reactor vessel includes a concrete shell having a cavity therein. The steel liner is positioned in the cavity and spaced from the concrete shell so that an insulating chamber is formed between the steel liner and the concrete shell. The insulating chamber is filled with high aluminate cement concrete which is configured to substantially insulate the concrete shell from the steel liner and to transfer loads such as pressure from the liner to the concrete shell.

摘要翻译： 在一种形式中，本发明是一种天然循环反应器，在一个实施方案中，其具有设置在未绝缘钢衬套和预应力混凝土反应器容器之间的高铝酸盐水泥混凝土层。 预应力混凝土反应堆容器包括其中具有空腔的混凝土壳体。 钢衬套位于空腔中并与混凝土外壳隔开，从而在钢衬套和混凝土外壳之间形成绝缘室。 绝缘室中填充有高铝酸盐水泥混凝土，其被配置为使混凝土壳体与钢衬套基本上绝缘，并将诸如压力的负载从衬套传递到混凝土壳体。

公开(公告)号：US5577085A

公开(公告)日：1996-11-19

申请号：US428810

申请日：1995-04-24

申请人： Perng-Fei Gou ,  Larry E. Fennern ,  Charles W. Dillmann ,  Craig D. Sawyer ,  Momtaz M. Aburomia ,  Charles W. Relf ,  Mark W. Siewert ,  John C. Walther

发明人： Perng-Fei Gou ,  Larry E. Fennern ,  Charles W. Dillmann ,  Craig D. Sawyer ,  Momtaz M. Aburomia ,  Charles W. Relf ,  Mark W. Siewert ,  John C. Walther

IPC分类号： G21C9/004 ,  G21C1/08 ,  G21C9/00 ,  G21C13/00 ,  G21C13/093 ,  G21C15/18

CPC分类号： G21C1/08 ,  G21C1/084 ,  G21C13/00 ,  G21C13/0933 ,  G21C9/00 ,  G21Y2002/30 ,  G21Y2002/301 ,  G21Y2004/30 ,  G21Y2004/304 ,  Y02E30/31

摘要： A nuclear reactor having a pressure vessel which is open at the top. The open top of the pressure vessel is closed by a steel dome. A containment, which is open at the top, extends upward from and is joined to the top of the pressure vessel and has an open containment head at the top thereof. The open top of the containment is closed by a steel dome, thereby forming a containment well bounded laterally by the containment, on the bottom by the vessel closure and on the top by the containment closure. The pressure vessel can be a steel-lined prestressed concrete vessel, while the containment is formed by an extension of the prestressed concrete vessel. Alternatively, the pressure vessel and the containment are parts of a unitary steel vessel. Isolation valves are installed on each penetration pipeline to isolate the system in the event of a loss-of-coolant accident. An isolation valve located external to the pressure vessel and the portion of the pipeline between that external isolation valve and the interior of the pressure vessel are encased in guard piping. The space between the pipeline and the guard piping is pressurized and monitored to detect any leak in either the pipeline or the guard piping.

摘要翻译： 具有在顶部开口的压力容器的核反应堆。 压力容器的开口顶部由钢制圆顶封闭。 在顶部开口的容纳物从压力容器的顶部向上延伸并连接到压力容器的顶部，并且在其顶部具有敞开的容纳头。 容器的敞开的顶部由钢制圆顶封闭，从而通过容器形成横向封闭的容器，底部由容器封闭件形成，顶部由容器封闭件形成。 压力容器可以是钢衬里的预应力混凝土容器，而容器由预应力混凝土容器的延伸部分形成。 或者，压力容器和容器是单一钢容器的部件。 在每个穿透管道上安装有隔离阀，以便在发生冷却剂损失事故时隔离系统。 位于压力容器外部的隔离阀和该外部隔离阀与压力容器内部之间的管道部分被封装在防护管道中。 管道和保护管道之间的空间被加压和监控，以检测管道或保护管道中的任何泄漏。

公开(公告)号：US4285769A

公开(公告)日：1981-08-25

申请号：US952846

申请日：1978-10-19

申请人： Steven R. Specker ,  Craig D. Sawyer ,  Russell L. Crowther ,  Bennett J. Gitnick ,  Kenneth V. Walters ,  Robert E. Brown ,  Larry E. Fennern

发明人： Steven R. Specker ,  Craig D. Sawyer ,  Russell L. Crowther ,  Bennett J. Gitnick ,  Kenneth V. Walters ,  Robert E. Brown ,  Larry E. Fennern

IPC分类号： G21C1/00 ,  G21C3/328 ,  G21C5/00 ,  G21C7/00 ,  G21C7/10 ,  G21C7/113 ,  G21C19/00 ,  G21C19/20

CPC分类号： G21C1/00 ,  G21C7/00 ,  G21C7/113 ,  G21C19/00 ,  G21Y2002/104 ,  G21Y2002/201 ,  G21Y2004/10 ,  G21Y2004/40 ,  Y02E30/39

摘要： A method and arrangement for operating a boiling water nuclear reactor and fuel assembly designs for such reactor wherein the reactor is operated with uniquely located control rods that serve the primary functions of power shaping and reactivity control. A second and separate distinct group of control rods is withdrawn when the reactor is at power and the control rods of this group serve the primary function of reactor shutdown. The design of the fuel assemblies and the selected patterns of fuel assemblies and control rods make the separation of control functions feasible. The power shaping and reactivity control control rods are located in low power regions of the core designated control cells. The design of the fuel is such that the control rods of the control cells may remain in fixed positions in these cells during the operating cycle until withdrawal for burnup reactivity compensation.

摘要翻译： 用于操作这种反应器的沸水核反应堆和燃料组件设计的方法和装置，其中反应器以独特的位置控制棒操作，其用于功率整形和反应性控制的主要功能。 当反应堆处于动力状态时，撤回第二个独立的不同组的控制棒，并且该组的控制棒用于反应堆关闭的主要功能。 燃料组件的设计和所选择的燃料组件和控制棒的模式使控制功能的分离成为可能。 功率整形和反应控制控制棒位于核心指定控制单元的低功率区域。 燃料的设计使得控制电池的控制棒可以在操作循环期间保持在这些电池中的固定位置，直到取消燃烧反应性补偿。

公开(公告)号：US5204053A

公开(公告)日：1993-04-20

申请号：US804301

申请日：1991-12-09

申请人： Larry E. Fennern

发明人： Larry E. Fennern

IPC分类号： F04D7/08 ,  F04D13/04 ,  F04D15/00 ,  F04D29/04 ,  F04D29/047 ,  F04D29/42 ,  F04D29/44 ,  G21C1/08 ,  G21C1/28 ,  G21C5/02 ,  G21C15/24 ,  G21C15/243

CPC分类号： F04D29/047 ,  F04D13/043 ,  F04D15/0005 ,  F04D29/426 ,  F04D29/448 ,  F04D7/08 ,  G21C1/084 ,  G21C15/24 ,  G21C15/243 ,  G21C1/28 ,  G21C5/02 ,  G21Y2002/201 ,  G21Y2002/601 ,  G21Y2004/40 ,  Y02E30/31

摘要： Fuel management in a boiling-water nuclear reactor involves arranging fuel bundles in upper and lower matrices of the reactor core. During a refueling operation, some bundles in the upper matrix are removed and retired, while fresh bundles are inserted in the lower matrix and some bundles originally in the lower matrix are transferred to the upper matrix. In the transfer, fuel bundles are inverted so that included fuel rods in the lower matrix have their plenums oriented downward, while fuel rods in the upper matrix have their plenums oriented upward. This method provides greater flexibility in repositioning fuel bundles for longer burnups and lower high-level waste. In particular, problems with axial spectral variations in neutron flux can be compensated for using the disclosed refueling procedure.

摘要翻译： 沸水核反应堆中的燃料管理涉及将燃料束布置在反应堆堆芯的上下基质中。 在加油操作期间，上部矩阵中的一些束被去除并退出，而新鲜的束被插入下部矩阵中，并且最初在下部矩阵中的一些束被转移到上部矩阵。 在转移中，燃料束被倒置，使得下部基体中包括的燃料棒具有朝向下方的集气室，而上部矩阵中的燃料棒具有朝向上方的气室。 该方法提供了更大的灵活性来重新定位燃料束以用于较长的燃耗和较低的高水平废物。 特别地，使用所公开的加油程序可以补偿中子通量的轴向光谱变化的问题。

公开(公告)号：US5406597A

公开(公告)日：1995-04-11

申请号：US908119

申请日：1992-07-02

申请人： Larry E. Fennern ,  Roy C. Challberg ,  Nilkanth T. Patel ,  Russell M. Fawcett ,  Richard A. Ose ,  Charles W. Dillmann ,  Steven A. Hucik

发明人： Larry E. Fennern ,  Roy C. Challberg ,  Nilkanth T. Patel ,  Russell M. Fawcett ,  Richard A. Ose ,  Charles W. Dillmann ,  Steven A. Hucik

IPC分类号： G21C1/08 ,  G21C7/08 ,  G21C7/113 ,  G21C7/12 ,  G21C7/16 ,  G21C9/02 ,  G21C15/18 ,  G21C7/06

CPC分类号： G21C7/08 ,  G21C1/084 ,  G21C9/02 ,  G21Y2002/301 ,  G21Y2004/30 ,  Y02E30/31 ,  Y02E30/39

摘要： A boiling water reactor includes a pressure vessel containing a reactor core, chimney, steam separator assembly, and steam dryer assembly therein, with the vessel being filled with reactor water to a normal water level through the steam separator assembly. A plurality of control rod drives extend downwardly from the bottom of the pressure vessel and are operatively joined to control rods extending downwardly into the reactor core. The chimney includes a plurality of channels disposed above the core and laterally spaced apart to define guide slots for receiving the control rods as they are selectively translated upwardly out of the core by the control rod drives. The chimney has a vertical height for increasing the normal water level above the reactor core and for providing a space for the control rods withdrawn from the reactor core by the bottom-mounted control rod drives. The control rods are selectively withdrawn upwardly from the core and inserted downwardly into the core by the control rod drives, which also are effective for selectively releasing the control rods for allowing gravity to insert the control rods into the core.

摘要翻译： 沸水反应器包括含有反应堆芯，烟囱，蒸汽分离器组件和其中的蒸汽干燥器组件的压力容器，其中容器通过蒸汽分离器组件填充有反应器水至正常水位。 多个控制棒驱动器从压力容器的底部向下延伸并且可操作地连接到向下延伸到反应堆芯中的控制杆。 烟囱包括多个通道，设置在芯部上方并横向间隔开，以限定用于接收控制棒的引导槽，当它们被控制杆驱动器选择性地向上移出离开芯时。 烟囱具有垂直高度，用于增加反应堆堆芯上方的正常水位，并为由底部安装的控制杆驱动器提供从反应堆堆芯取出的控制杆提供一个空间。 控制杆选择性地从芯部向上取出，并通过控制杆驱动器向下插入到芯体中，这对于选择性地释放控制杆是有效的，以允许重力将控制棒插入到芯中。

公开(公告)号：US5082620A

公开(公告)日：1992-01-21

申请号：US699428

申请日：1991-05-13

申请人： Larry E. Fennern

发明人： Larry E. Fennern

IPC分类号： G21C15/243 ,  G21C1/08 ,  G21C15/24 ,  G21C15/25 ,  G21C15/26

CPC分类号： G21C1/084 ,  G21C15/24 ,  Y02E30/31

摘要： A recirculation system for a boiling water reactor includes a plurality of circumferentially spaced impeller-driven reactor internal pumps disposed in a downcomer for pumping a first portion of reactor coolant, and a plurality of circumferentially spaced fluid-driven jet pumps disposed in the downcomer for pumping a remaining portion of the coolant in the downcomer. In an exemplary embodiment, the jet pumps are driven by a portion of feedwater provided to the reactor.

公开(公告)号：US4957690A

公开(公告)日：1990-09-18

申请号：US280800

申请日：1988-12-07

申请人： Larry E. Fennern

发明人： Larry E. Fennern

IPC分类号： G21C17/00 ,  G21D3/00

CPC分类号： G21D3/008 ,  G21C17/00 ,  Y02E30/39

摘要： A safety qualified interface device is interposed between an operator manned control position having an operator interface and qualified safety system logic monitoring and control devices. This microprocessor driven interface incorporates a memory carrying a library collection of valid safety directives as well as valid parameter inputs and permissible parameter deviation ranges. Control or parameter requests are asserted by the operator from non-safety related but conveniently positioned interface devices at the control position which are treated as trial inputs which are matched at the interface with memory retained valid directives and parameters. Where a match between memory retained data and the trial input signals occurs, then the operator is apprised through a qualified safety related display and a corresponding acknowledgement is made to the interface. The interface then transmits either the directive or parameter request to the associated divisional safety related components for execution and/or retrieval.

公开(公告)号：US5317613A

公开(公告)日：1994-05-31

申请号：US785839

申请日：1991-10-31

申请人： Larry E. Fennern

发明人： Larry E. Fennern

IPC分类号： G21C3/324 ,  G21C3/32 ,  G21C3/322 ,  G21C3/336 ,  G21C3/344 ,  G21C5/00 ,  G21C15/02 ,  G21C3/34

CPC分类号： G21C3/322 ,  G21C3/32 ,  G21C3/336 ,  G21Y2002/201 ,  G21Y2002/301 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/31 ,  Y02E30/38

摘要： A reactor core with each fuel rod surrounded by an individual cylindrical channel is disclosed. This individual channel on each fuel rod provides thermal hydraulic and heat transfer advantages to enable all fuel rods within the fuel bundle to uniformly approach their own thermal limits. The preferred fuel rod pitch is a triangular pitch between the individual fuel rods as they are discretely surrounded by their own channel. The new triangular geometry provides for more uniform (flat) power distributions within all fuel rods--and hence all groups of fuel rods. Bypass flow is introduced uniformly between the fuel rod channels, rather than heterogeneously in the channel gap and water rods as in present BWR fuel designs. Individual fuel rod channels can be orificed differently, as required, to match inlet flow to fuel rod power output to maintain uniformity between all fuel rods as they approach their respective thermal limits. Gaps between bundles can be eliminated, or at least minimized, yielding even higher power density. Spacers with flow diverting structure vanes are applied within the fuel rod channel to limit relative displacement between the channel wall and fuel rod cladding and to serve as turbulent flow promoters.

摘要翻译： 公开了具有由单独的圆柱形通道包围的每个燃料棒的反应堆芯。 每个燃料棒上的这个单独的通道提供热液压和传热优点，使得燃料束内的所有燃料棒能够均匀地接近其自身的热限制。 优选的燃料棒间距是各个燃料棒之间的三角形间距，它们被它们自己的通道离散地包围。 新的三角形几何形状提供了在所有燃料棒内以及所有燃料棒组中的更均匀（平坦的）功率分布。 旁路流量在燃料棒通道之间均匀地引入，而不是像现在的BWR燃料设计中那样在通道间隙和水棒中不均匀地引入。 根据需要，单独的燃料棒通道可以不同地进行喷孔，以将入口流量与燃料棒功率输出相匹配，以在所有燃料棒接近其各自的热限制时保持均匀性。 束之间的间隙可以消除，或至少最小化，产生更高的功率密度。 具有分流结构叶片的间隔件被施加在燃料棒通道内以限制通道壁和燃料棒包层之间的相对位移并且用作湍流促进器。

公开(公告)号：US5213756A

公开(公告)日：1993-05-25

申请号：US694526

申请日：1991-05-01

申请人： Larry E. Fennern

发明人： Larry E. Fennern

IPC分类号： G21C5/00 ,  G21C1/08 ,  G21C7/00 ,  G21C7/10 ,  G21C7/113

CPC分类号： G21C1/084 ,  G21C7/113 ,  Y02E30/31 ,  Y02E30/39

摘要： An expanded reactor core capacity is achieved within the constraints imposed by the diametric extent of the current advanced boiling reactor (ABWR). This enhanced core capacity is achieved through the utilization of a scalloped shroud structure in conjunction with modified control rod designs. The core diameter is expanded toward the reactor vessel interior wall to establish a minimum distance therebetween representing a minimum value thereof avoiding neutron fluence induced vessel embrittlement. The control rods servicing peripheral fuel assemblies are configured having either a T-shaped blade configuration or an L-shaped blade configuration depending upon the parallel orientations of the peripheral fuel assemblies.

公开(公告)号：US5171522A

公开(公告)日：1992-12-15

申请号：US783804

申请日：1991-10-28

申请人： Larry E. Fennern

发明人： Larry E. Fennern

IPC分类号： G21C3/326 ,  G21C3/322

CPC分类号： G21C3/322 ,  Y02E30/31 ,  Y02E30/38

摘要： A fuel bundle of square cross section and standard vertical dimension is disclosed. The fuel bundle includes a matrix of upstanding vertical rods, a lower tie plate for supporting the matrix of vertical rods and permitting the inflow of liquid moderator coolant (preferably light water), and upper tie plate for holding the matrix of vertical fuel rods upright and permitting the outflow of liquid and vapor moderator coolant (water and steam), and a preferably square sectioned channel extending between the tie plate for confining the flow path between the tie plate around the fuel bundle. The novel characteristics of the invention is the introduction of a corresponding matrix of water rods (cylindrical rods with liquid phase water flow) positioned between the fuel rods, as opposed to the current practice of using or displacing a subset of fuel rods with large central water rod(s) for this purpose. This matrix of water rods preferably has each water rod of smaller diameter than the adjoining fuel rods and is dispersed at intervals uniformly in the matrix of fuel rods. This geometry provides for more uniform (flat) power distributions within the bundle, as a result of the greater similarity of the neutron spectrum in the vicinity of the individual fuel rods. This geometry yields increased design margins for MLGHR and MCPR relative to current fuel designs. The design margins can be traded off to permit achievement of higher core power density. The design also results in less negative void coefficients, which improves core stability.

摘要翻译： 公开了一种方形横截面和标准垂直尺寸的燃料束。 燃料束包括直立杆的基体，用于支撑垂直杆的基体并允许液体慢化剂冷却剂（优选轻水）的流入的下连接板，以及用于将垂直燃料棒的基体竖直保持的上部连接板 允许液体和蒸汽缓和剂冷却剂（水和蒸汽）的流出，以及在连接板之间延伸的优选方形截面的通道，用于限制围绕燃料束的连接板之间的流动路径。 本发明的新颖特征是引入位于燃料棒之间的水棒（具有液相水流的圆柱棒）的相应矩阵，与目前使用或置换具有大中心水的燃料棒子集的实践相反 杆为此目的。 水杆的这种矩阵优选地具有比邻接的燃料棒小的直径的每个水杆，并且以均匀的间隔分散在燃料棒的基体中。 由于各个燃料棒附近的中子谱更相似，所以这种几何形状提供了束内更均匀（平坦）的功率分布。 相对于目前的燃料设计，这种几何形状提高了MLGHR和MCPR的设计余量。 设计利润可以交易，以实现更高的核心功率密度。 该设计还导致较少的空隙系数，这提高了核心的稳定性。