Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 8077824 | Support arrangement A nuclear reactor includes a reactor pressure vessel 12 and a core barrel 14, contained within the reactor pressure vessel 12. The reactor 10 further includes a single vertical support 16, for transmitting vertical load from the co... | 12/13/2011 |
| 7822167 | Nuclear facility and method for operating a nuclear facility A technical installation, especially a nuclear power plant, has a number of system components that are respectively supported by a number of beams, and a number of pressurized conduits. The technical installation is designed in such a way that secondary damage occur... | 10/26/2010 |
| 7418072 | Spacer A spacer for a fuel assembly for a light water nuclear reactor contains a plurality of intercrossed segments, which form a grid. The segments are formed from first and second metal strips which are assembled and provided with protruding parts or corrugations in such... | 08/26/2008 |
| 7357100 | Heat exchanger tube panel module, and method of constructing exhaust heat recovery boiler using the same A necessary size and number of modules each obtained by housing a member including heat exchanger tube panels each comprising a heat exchanger tube bundle and headers for the heat exchanger tube bundle, an upper casing of an exhaust heat recovery boiler (HRSG), prov... | 04/15/2008 |
| 6813327 | Core support for an F-lattice core of a boiling water nuclear reactor A core plate assembly for a nuclear reactor includes a plurality of support beams, a flat plate positioned on top of the support beams, a plurality of control rod guide tube openings arranged in staggered rows, and a plurality of fuel supports extending through the ... | 11/02/2004 |
| 6594333 | Thermal load reducing system for nuclear reactor vessel The present invention is used to reduce thermal load itself, being the cause to generate stress, which develops near liquid surface in a nuclear reactor wall and to contribute to further improvement of safety. A partition member (5) is arranged above a co... | 07/15/2003 |
| 6570950 | Nuclear plant containment with prefabricated component support structure A nuclear steam supply containment system employing prefabricated component supports that are surrounded by steel concrete forms and anchored to the floor liner of a nuclear containment. The prefabricated component supports extend through the concrete for... | 05/27/2003 |
| 6520123 | Expansion cage An open-webbed cage support device providing support that enabling a mechanical device such as a thermal expansion tank to be suspended or mounted adjacent to the thermal water heating device without the need to improvise a "made in the field" support str... | 02/18/2003 |
| 6389094 | Integral forged shroud flange for a boiling water reactor A forged upper shroud section which may be machined from a single piece rectangular cross-section ring forging and includes a circular flange and a cylindrical shell is described. Openings and slots are machined into the flange to align and support the sh... | 05/14/2002 |
| 6351510 | Nuclear plant A nuclear power plant comprising a casing which encloses a primary space, a reactor vessel arranged in the primary space, and a reactor core provided in the reactor vessel. The plant further comprises an upper space provided above the casing. The reactor ... | 02/26/2002 |
| 6233301 | Jet pump sensing line T-bolt clamp electrode discharge machining tool An electrode discharge machining (EDM) apparatus for machining slots in a jet pump diffuser in a nuclear reactor pressure vessel is described. The apparatus is configured to machine a plurality of slots in the diffuser at positions behind the diffuser sen... | 05/15/2001 |
| 6173027 | Primary containment vessel A primary containment vessel comprises an outer peripheral concrete wall surrounding a reactor pressure vessel, a pipe arrangement of a reactor water recirculation system and other reactor systems and equipments, a mat concrete wall positioned below the o... | 01/09/2001 |
| 6160864 | Seismic isolators A seismic load suppressing system for a nuclear reactor that reduces the seismic input to the reactor and the internal components of the reactor including the fuel is described. The seismic load suppressing system includes, in one embodiment, a plurality ... | 12/12/2000 |
| 6091791 | Shroud attachment for a boiling water reactor A shroud attachment assembly which provides both structural support for the shroud and a seal between the shroud and shroud support is described. In one specific embodiment, the shroud attachment assembly includes a shroud flange formed integral with the ... | 07/18/2000 |
| 6021170 | Nuclear reactor plant having a reactor pressure vessel with a core barrel and method for mounting the core barrel A nuclear reactor plant includes a reactor pressure vessel having a core barrel supported on a cylindrical holding structure fixed in the reactor pressure vessel. The core barrel has a lower part with at least one elastically resilient segment. A projecti... | 02/01/2000 |
| 6009137 | Mid-shroud joint for a boiling water reactor A mid-shroud joint which improves the replaceability of the shroud is described. In one embodiment, the shroud includes a core shroud and a lower shroud. A core plate support flange is clamped between the core shroud and the lower shroud, and the core pla... | 12/28/1999 |
| 5930320 | Assemblies and methods for mitigating effects of reactor pressure vessel expansion Support assemblies for allowing RPV radial expansion while simultaneously limiting horizontal, vertical, and azimuthal movement of the RPV within a nuclear reactor are described. In one embodiment, the support assembly includes a support block and a guide... | 07/27/1999 |
| 5864594 | Apparatus and method for replacing internal components in a nuclear reactor An apparatus and method are provided for replacing the existing lower internal components in a nuclear reactor vessel with new components. The alignment of the new lower internals to the pressure vessel and the existing upper internals is achieved by cust... | 01/26/1999 |
| 5802129 | Mechanically joined replacement shroud for boiling water nuclear reactor In a pressure vessel of a nuclear reactor containing a core assembly enclosed within a core shroud, the core shroud spaced radially inwardly of a pressure vessel wall, with an annular shroud support plate fixed to the pressure vessel wall, wherein a lower... | 09/01/1998 |
| 5781603 | Method and apparatus for repair of nuclear reactor shroud In order to support a shroud against bending, shear, stress and torsion, straps which are preferably formed of the same material as the shroud, are placed in strategic positions with respect to cracks or the like type of weaknesses which have been detecte... | 07/14/1998 |
| 5746540 | Method of isolating a nuclear reactor or other large structures A method of entombing a nuclear reactor where the reactor with its bio-shield remains intact. An access shaft, several lateral adits, and several chambers below the reactor location are excavated to provide access at underground locations below the reacto... | 05/05/1998 |
| 5740216 | Vertical seismic isolation structure of common deck system for nuclear reactor components A vertical seismic isolation structure is capable of achieving vertical seismic isolation of nuclear reactor components connected to each other by primary pipings, while suppressing the relative displacement with respect to the primary pipings. A nuclear ... | 04/14/1998 |
| 5683216 | Spring latching mechanisms for preventing relative movement of assembled components Spring latching mechanisms for preventing relative rotation or relative displacement of assembled components during operation of a nuclear reactor. The first type of mechanism prevents rotation of a threaded fastener which fastens a first component to a s... | 11/04/1997 |
| 5640434 | Miniaturized nuclear reactor utilizing improved pressure tube structural members The present invention relates to a miniaturized nuclear utilizing improved pressure tube structural members. More particularly, the present invention relates to a new miniaturized nuclear reactor utilizing novel structural members that are used to support... | 06/17/1997 |
| 5610962 | Construction of nuclear power plants on deep rock overlain by weak soil deposits A nuclear power generation complex constructed on a stratum of rock overlain by soil deposits. All major structures in the power generation complex (i.e., reactor, turbine, radwaste and control buildings) are located on a common mat foundation that houses... | 03/11/1997 |
| 5608767 | Neutron-activated direct current source A device for generating direct current by neutron activation of a plurality of series-connected beta-emitter (nuclear decay electron) cells, located in the out-of-core region of a light water nuclear reactor. The device can be used as either a current sou... | 03/04/1997 |
| 5574760 | Method and apparatus for supporting a shroud in a nuclear reactor In order to eliminate the need to weld, drill or otherwise machine a shroud structure which is used to surround a plurality of fuel assemblies in a nuclear reactor, a plurality of upper hanger rods interconnect a structure above the shroud to a support ri... | 11/12/1996 |
| 5550883 | Vessel of a nuclear reactor, including means for holding its lower internals and method of adjusting the holding means The vessel of the nuclear reactor includes at least three assemblies (22) distributed around the periphery of the core support plate (25), each comprising a key (26) fixed to the inner surface of the wall (21) of the vessel at the core support plate (25) ... | 08/27/1996 |
| 5488643 | Method and apparatus for supporting a shroud in a nuclear reactor In order to eliminate the need to weld, drill or otherwise machine a shroud structure which is used to surround a plurality of fuel assemblies in a nuclear reactor, a plurality of upper hanger rods interconnect a structure above the shroud to a support ri... | 01/30/1996 |
| 5430779 | Apparatus for supporting a shroud in a nuclear reactor In order to eliminate the need to weld, drill or otherwise machine a shroud structure which is used to surround a plurality of fuel assemblies in a nuclear reactor, a support ring which either seats on top of the upper edge of the shroud, or is formed in ... | 07/04/1995 |
| 5379331 | Transverse holding device for a steam generator of a pressurized water nuclear reactor, and for its adjustment An adjusting and positioning assembly for a bearing element (55), constituted by a nut (52) carried by a base plate, (40) fixed on a wall of a concrete structure in which the component is arranged, and a screw-jack (54) engaged with and blockable with res... | 01/03/1995 |
| 5301212 | Apparatus for dismantling an irradiated component of a nuclear reactor by the cutting of its wall The irradiated component (1) comprises at least one tubular wall with its axis vertical and fastened inside a well (2) in a concrete structure (3). The connecting elements between the concrete structure (3) and the component (1) are destroyed, the compone... | 04/05/1994 |
| 5278880 | Pressurizer tank upper support A pressurizer tank in a pressurized water nuclear reactor is mounted between structural walls of the reactor on a substructure of the reactor, the tank extending upwardly from the substructure. For bearing lateral loads such as seismic shocks, a girder su... | 01/11/1994 |
| 5268944 | Nuclear reactor having a polyhedral primary shield and removable vessel insulation A nuclear reactor is provided having a generally cylindrical reactor vessel disposed within an opening in a primary shield. The opening in the primary shield is defined by a plurality of generally planar side walls forming a generally polyhedral-shaped op... | 12/07/1993 |
| 5223210 | Passive cooling system for liquid metal cooled nuclear reactors with backup coolant flow path A liquid metal cooled nuclear fission reactor plant having a passive auxiliary safety cooling system for removing residual heat resulting from fuel decay during reactor shutdown, or heat produced during a mishap. This reactor plant is enhanced by a backup... | 06/29/1993 |
| 5217681 | Special enclosure for a pressure vessel A prestressed pressure vessel safety enclosure is used as a pressure safety enclosure for a nuclear reactor pressure vessel or other primary system vessel containing fluid or gaseous material under high pressure, such as, steam generators, pressurizers an... | 06/08/1993 |
| 5204054 | Nuclear reactor pressure vessel A nuclear reactor system pressure vessel comprises a steel inner liner part, an intermediate insulative layer part and an outer pre-stressed concrete part encasing these parts. Use of the pre-stressed construction allows for construction of pressure vesse... | 04/20/1993 |
| 5198184 | Reactor containment vessel A reactor pressure vessel is disposed in a reactor containment vessel and is supported by a pedestal having a cylindrical structure. The inside of the reactor containment vessel is divided into upper and lower drywells by means of a diaphragm floor. A lin... | 03/30/1993 |
| 5124114 | Movement detection system In a system for detecting abnormal movement of a part of a gas-cooled nuclear reactor, for example abnormal tilting of a boiler unit caused by failure of a boiler support, a tracer material is released into the gas coolant path in response to the movement... | 06/23/1992 |
| 5075073 | Foreign object separator for a reactor cooling system A nuclear reactor includes a spaced sidewall and a core shroud defining a flow passage for channeling a coolant. A foreign object separator includes an arcuate endwall extending from the sidewall, with the core shroud including an intermediate portion spa... | 12/24/1991 |
