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7139352 |
Reactivity control rod for core
A reactivity control rod adapted to be used in a reactor core of a fast reactor and disposed at a substantially central portion of the reactor core for controlling a reactivity therein. The...
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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...
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6526115 |
Supercritical-pressure water cooled reactor and power generation plant
A supercritical pressure water cooled reactor comprising: a reactor vessel including: a shell part for containing sub-critical pressure coolant, and an end part for containing...
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5528641 |
Fuel assembly
A fuel assembly is provided with a coolant ascending path for making coolant rise and a water rod having a coolant descending path for conducting the coolant. A ratio of a flow area in a coolant...
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5200138 |
Spectral shift-producing subassembly for use in a nuclear fuel assembly
A spectral shift-producing subassembly is composed of a plurality of sealed empty water displacement rodlets incorporating a spectral shift-producing capability. Each of the rodlets includes an...
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5196159 |
Fast reactor
A fast reactor comprises a reactor vessel to be arranged vertically in a reactor building, a reactor vessel upper structure disposed on an upper portion in the reactor vessel, a drum structure...
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5183628 |
Nuclear reactor internals with cluster guides
Internal equipments suitable for use in a nuclear reactor comprise a lower plate provided with openings for the coolant leaving the core, an upper plate, support columns connecting the plates...
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5167906 |
Apparatus for increasing fuel efficiency in nuclear reactors
An apparatus for achieving increased fuel efficiency in a nuclear reactor wherein spectral shift is utilized to adjust for excess reactivity. This feature is achieved by stationary displacer rods...
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5075069 |
Method and apparatus for increasing fuel efficiency in nuclear reactors
A method and apparatus for achieving increased fuel efficiency in a nuclear reactor wherein spectral shift is utilized to adjust for excess reactivity. This feature is achieved by stationary...
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5023047 |
Nuclear reactor having an ascending cooling path much greater than the descending cooling path
A fuel assembly has a water rod which consists of a coolant ascending path and a coolant descending path, the coolant ascending path opening below a fuel support of a lower tie plate, the coolant...
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RE33030 |
Self rupturing gas moderator rod for a nuclear reactor
An arrangement for controlling the moderation of a nuclear reactor which includes multiple fuel assemblies each of which includes top and bottom nozzles with fuel rods and control rod guide...
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4728480 |
Apparatus and method for refurbishing a spectral shift mechanism for a nuclear reactor fuel assembly
A fuel assembly in a nuclear reactor has a spectral shift apparatus including a plurality of displacer rods for controlling reactivity in the assembly and an apparatus for refurbishing the...
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4717527 |
Fuel assembly
A fuel assembly for a pressurized water nuclear reactor incorporating fluid moderator spectral shift control means. During the first part of the fuel cycle when there is excess reactivity, neutron...
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4693862 |
Gas displacement spectral shift reactor and control method
A method and apparatus for extending the life of a core of a water moderated nuclear reactor by spectral shift comprising the displacement of a portion of the moderator in the core by a gas having...
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4683103 |
Spectral shift apparatus and method for a nuclear reactor fuel assembly
A fuel assembly in a nuclear reactor has a spectral shift apparatus including a plurality of displacer rods for controlling reactivity in the assembly and an apparatus for refurbishing the...
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4661306 |
Fluid moderator control system reactor internals distribution system
Apparatus is disclosed for introducing a low neutron moderating fluid into the reactor vessel of a spectral shift pressurized water nuclear reactor and for distributing the moderating fluid through...
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4657726 |
Moderator control apparatus for a nuclear reactor fuel assembly
A moderator control apparatus is provided for use with a fuel assembly to improve fuel utilization in thereby reducing fuel cycle costs. The apparatus includes a plurality of displacer rods filled...
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4642214 |
Nuclear pebble bed reactor with inherent passive stabilization in the event of damage
A high-temperature nuclear reactor having spherical fuel elements which are rranged approximately ring-shaped about a graphite core, and in particular, a massed-sphere nuclear reactor providing for...
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4575448 |
Moderation of neutron energy
A nuclear reactor system in which the neutron-energy spectrum is displaced towards lower energy (enthalpy) by a control selectively operable by commands outside of the reactor. The core of the...
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4545954 |
Device for shutting down a high-temperature nuclear reactor
Device for shutting down a high-temperature nuclear reactor having a reactor core, including a reflector disposed outside the reactor core, channels being disposed in the reflector and having lower...
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T101204 |
Compact fast nuclear reactor using heat pipes
A fast nuclear reactor is described which comprises a conical reactor core surrounding an embedded array of heat pipes of, per se, novel structure, carrying either moderator or nuclear fuel...
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4188795 |
Hydrogen-hydride absorption systems and methods for refrigeration and heat pump cycles
Improved hydrogen-hydride absorption systems for improving the energy utilization in refrigeration and heat pump cycles comprise reactor systems for chemically forming three or more hydride...
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3910818 |
Method for increasing the burn-up capability of boiling water nuclear reactors containing plutonium-bearing fuel assemblies
The burn-up capability of a boiling water nuclear reactor containing plutonium-bearing fuel assemblies is significantly increased by reducing the void fraction in the core toward the end of the...
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3802992 |
INHERENT AUTOMATIC REACTOR CONTROL
This invention relates to an automatic control means for a nuclear reactor, pecifically to a means for regulating the energy release rate within the core of a liquid moderated reactor. The...
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3793144 |
FUEL ELEMENT FOR A NUCLEAR REACTOR OF THE PASSIVE METHOD HYDRIDE CONTROL TYPE
A fuel element for a nuclear reactor of the passive metal hydride control type comprises a porous pellet of zirconium hydride and uranium of hexagon or other shape, thereby permitting assembly into...
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3620315 |
NUCLEAR REACTOR WITH OSCILLATING LIQUID COOLANT MODERATOR
A nuclear reactor having a negative temperature coefficient of reactivity and having coolant moderator means wherein as the temperature of the core decreases below a mean value more cooling effect...
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3607633 |
BOILING HEAVY WATER INDIRECT-CYCLE REACTOR
The boiling heavy water reactor has heat exchangers located in the pressure vessel around a tank containing part of the heavy water inventory which constitutes the moderator. The flow of heavy...
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3510399 |
CONTROL SYSTEM FOR FAST REACTORS
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3434926 |
INDIRECT-CYCLE INTEGRAL STEAM COOLED NUCLEAR REACTOR
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3420738 |
FUEL ELEMENT ASSEMBLY FOR A NUCLEAR REACTOR
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3392087 |
Heterogeneous nuclear reactor of the pressure vessel type
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3383285 |
Liquid reflector control for nuclear reactors
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3373082 |
Control of nuclear power reactor
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3365369 |
Liquid moderated nuclear reactor core
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3284307 |
Fluid control system for boiling nuclear reactor
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3274064 |
Activation analysis nuclear reactor and spool-like fuel element therefor
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3258405 |
Nuclear reactor hydropulse system
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3247075 |
Nuclear reactor operating with hydrogen-bearing moderator and cooling vapor
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3238107 |
Flux-trap research and testing nuclear reactor
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3235464 |
Liquid moderated nuclear reactor core including annular control element movable about moderator filler rod
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3218237 |
Fuel element for a steam superheat boiling water nuclear reactor
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3210253 |
Self-limiting radiant nuclear boiler and superheater
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3206368 |
Cooling circuit for a liquid-moderator nuclear reactor
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3174907 |
Method of operating a steam generating nuclear reactor
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3152047 |
Liquid moderated nuclear reactors subject to varying movements
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3151031 |
Method of regulating the operation of homogeneous nuclear reactors
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3132076 |
Nuclear reactor
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3099616 |
Steam cooled reactor and fuel channel
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3091582 |
Nuclear reactor systems
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3046212 |
Nuclear reactor
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