|
Match
|
Document |
Document Title |
|
|
7477719 |
Control rod and a control rod blade for a boiling water reactor
The present invention relates to a control rod blade for a boiling water reactor. The control rod blade comprises a plurality of channels, which are arranged to receive an absorber material, a free...
|
|
|
7460632 |
Control rod absorber stack support
An absorber rod for a nuclear reactor having a rod cladding defining an internal volume, the rod cladding having an upper end and a lower end, an upper end fitting positioned in the upper end of...
|
|
|
7447291 |
Nuclear reactor and means for inserting liquid neutron absorber into the core
A nuclear reactor including: a vessel including at least two parts; a reactor core placed in the vessel and containing fuel rod assemblies; at least one internal structure located within the vessel...
|
|
|
7424085 |
Cluster for adjusting a nuclear reactor core reactivity, absorber rod of the cluster and method for protecting the absorber rod against wear
A control cluster for a pressurized water nuclear reactor comprising a bundle of neutron-absorbing rods each of which comprises a metal tube called cladding which is sealed off by a top end plug at...
|
|
|
7412021 |
Advanced gray rod control assembly
An advanced gray rod control assembly (GRCA) is for a nuclear reactor. The reactor has a plurality of fuel assemblies each including numerous elongated fuel rods supported in an organized array by...
|
|
|
7295646 |
Method for producing a coating for absorption of neutrons produced in nuclear reactions of radioactive materials
The invention relates to a method for producing a coating for absorption of neutrons produced in nuclear reactions of radioactive material which can be applied in an economically feasible and...
|
|
|
7286626 |
Neutron absorbing coating for nuclear criticality control
A neutron absorbing coating for use on a substrate, and which provides nuclear criticality control is described and which includes a nickel, chromium, molybdenum, and gadolinium alloy having less...
|
|
|
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...
|
|
|
6925138 |
Reactor core and method for operating nuclear reactor
The present invention is to provide a reactor core that allows a nuclear plant to continuously operate for a long term period, for example 15 years or longer, without requiring any fuel exchange,...
|
|
|
6882696 |
Control rod for boiling water reactor and method for manufacturing the same
A tie rod having a cruciform cross section is provided with steps for fixing sheaths at tips of cruciform arms of the tie rod; the tips of each of sheaths are fitted onto the steps of the tie rod,...
|
|
|
6823035 |
Control rod
A control rod ( 2 ) for boiling water reactor comprising four absorber blades ( 6, 7, 8, 9 ) which form an orthogonal cross with a cruciform centre ( 10 ). The width of the absorber blades...
|
|
|
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...
|
|
|
6741669 |
Neutron absorber systems and method for absorbing neutrons
A neutron absorber system for a nuclear fuel storage rack includes a neutron absorber, which is adapted to attach to a plurality of cell walls of a cell of the nuclear fuel storage rack. The...
|
|
|
6728328 |
Safety control circuit for a neutronic reactor
A neutronic reactor comprising an active portion containing material fissionable by neutrons of thermal energy, means to control a neutronic chain reaction within the reactor comprising a safety...
|
|
|
6654438 |
Control rod for boiling water reactor, unit for control rod and production method of control rod
A control rod for a BWR according to the present invention comprises a first unit composed of a tie rod, a handle mounted on an axially upper portion of the tie rod and a lower support member or...
|
|
|
6647082 |
Manufacturing method and device of control rods for nuclear reactors
A method for manufacturing a control rod of a nuclear reactor, the control rod having a blade including neutron absorbers and a sheath, a tie rod for fixing the blade, a handle and a lower-blade...
|
|
|
6636580 |
Control rod for nuclear reactor
A control rod for a nuclear reactor has a structure which is capable of suppressing expansion of a reduced-diameter portion of a neutron absorber in a radial direction under shocks applied upon...
|
|
|
6631176 |
Fuel assembly
A fuel assembly for a pressurized water reactor having control rod guide thimbles ( 5 ) each having a dashpot ( 12 ) for protecting against flexural deformation which may impair insatiability of a...
|
|
|
6614869 |
Absorber rod for nuclear reactor control cluster
The absorber rod comprises cladding ( 12 ) of stainless steel closed by plugs ( 14, 16 ) and containing a column of absorber pellets ( 24 ) e.g. of boron carbide. It also has an end bar ( 26 ) of...
|
|
|
6574295 |
Boiling water type nuclear reactor use control rod
In order to provide a boiling water type nuclear reactor use control rod with a guide use roller which improves corrosive environment at a clearance in the guide use roller and suppresses a...
|
|
|
6506483 |
Ceramic fiber debond coatings
Non-oxide debond coated reinforcing fibers that are resistant to oxidation at temperatures above about 1200° C. are described. The debond coatings are non-hygroscopic, and exhibit debond...
|
|
|
6470061 |
Control rod for nuclear reactor
The invention relates to a control rod for a boiling water reactor. The control rod comprises a top piece and a bottom piece between which an absorber part is arranged. The absorber part comprises...
|
|
|
6442227 |
Sleeve assembly for nuclear fuel racks
A sleeve assembly for refurbishing a fuel rack having cells in which fresh or spent nuclear fuel assemblies may be stored, in which the cells have elongate rack walls extending from a rack base...
|
|
|
6411668 |
Guide tube of a nuclear reactor fuel assembly
A tubular blank ( 22 ) is rolled on a mandrel ( 14 ) in a pilgrim rolling mill. In a first rolling stage, a first part of the blank ( 22 ) is rolled on a first part ( 18, 19 ) of the mandrel ( 14...
|
|
|
6409440 |
Method for cutting a piece of sheet metal used to hold a layer of neutron-absorbing material on a wall of an atomic fuel assembly storage rack cell
The present invention relates to a method for refurbishing an atomic fuel assembly storage rack the partitions ( 10 ) of which include a layer ( 14 ) of neutron-absorbing material between a wall (...
|
|
|
6396893 |
Apparatus and method for adjusting the weight of a velocity limiter for a control rod of a nuclear reactor
The control rod includes an upper absorber section and a lower velocity limiter comprised of a socket, a vane, a transition piece and a set of fins. To adjust the weight of the control rod, lighter...
|
|
|
6333955 |
Control rod and manufacturing method for the control rod
To reduce the manufacturing processes of a control rod and shorten the time required for manufacturing a control rod, for the lower part support member 7, the thin parts 11A and 11B are formed in...
|
|
|
6327322 |
Interlock assembly for burnable poison rod transfer device
A transfer device for moving a poison rod assembly between fuel cells in a nuclear fuel storage facility coupleable to an overhead crane. The poison rod assembly has a plurality of poison rods...
|
|
|
6301320 |
Nuclear fuel assembly having MOX rods and MOX-gadolinia rods
Nuclear fuel assembly configurations are provided for mixed oxide fuels. Neutron poisons are provided within the MOX of certain fuel rods in the fuel assembly, those fuel rods being preferentially...
|
|
|
6285728 |
Control rod for nuclear reactor
A control rod for a nuclear reactor is composed of a center structural member, a plurality of wings each composed of a sheath member of long plate structure having a U-shaped cross section and...
|
|
|
6246740 |
SIC-composite material sleeve and process for producing the same
A cylindrical thin-wall sleeve including an SiC fiber-reinforced SiC composite material (SiC/SiC), which has a porosity of 40% or less and a wall thickness of 5 mm or less.
|
|
|
6226341 |
Safety device for a neutronic reactor
A neutronic reactor comprising an active portion containing material fissionable by neutrons of thermal energy, means to control a neutronic chain reaction within the reactor comprising a safety...
|
|
|
6205196 |
Boiling water type nuclear reactor core and operation method thereof
A boiling water type nuclear reactor core, in which a plurality of fuel assemblies, each enclosed in a channel box, are loaded and a plurality of control rods, each having control blades, are...
|
|
|
6167104 |
Pressurized water reactor fuel assembly with a guide tube and method for producing the guide tube
A pressurized water reactor fuel assembly with a guide tube and a method for producing a guide tube for control elements are provided. Such guide tubes in pressurized water nuclear reactors which...
|
|
|
6137854 |
Reactor control rod and method of manufacturing the same
There is provided a reactor control rod which is capable of suppressing an excessive frictional force acting on passive state oxide films formed on the surfaces of neutron absorber elements, and...
|
|
|
6128361 |
Coating for reducing corrosion of zirconium-based alloys induced by . .beta-particle irradiation
A technique for reducing the shadow corrosion effect in zirconium-based alloys caused by β-particles emitted by adjacent components containing one or more elements that emit β-particle flux when...
|
|
|
6028906 |
Manufacturing method of control rod for boiling water reactor
The present invention relates to a control rod installed in a boiling water reactor (BWR), and particularly to a control rod using metal. An object of the present invention is to provide a...
|
|
|
5946367 |
Reactor control rod element
A neutron absorbing pin including at least, a neutron absorber, a thin-wall pipe surrounding the neutron absorber, and a cladding disposed at a distance from the thin-wall pipe. In the neutron...
|
|
|
5914995 |
Nuclear reactor fuel assembly
A nuclear reactor fuel assembly includes a fuel assembly base, a fuel assembly head and mutually parallel fuel rods containing nuclear fuel and extending between the fuel assembly head and the fuel...
|
|
|
5889832 |
Nuclear reactor control cluster having removable rods
The control cluster has a spider constituted by a hub connectable to a drive shaft. Fins radiate from a bottom portion of the hub and provided with vertical fingers distributed in a regular array....
|
|
|
5883931 |
Control rod for a nuclear reactor having mounting structures for replacing/rearranging/inverting absorber tubes
A control rod includes four panels in cruciform section each containing a plurality of absorber tubes. The absorber tubes are mounted between upper and lower mounting structures having generally...
|
|
|
5841825 |
Neutron absorbing apparatus
A neutron absorbing apparatus which includes two adjacent neutron absorbing plates and a mounting assembly with latching means configured to be easily secured to fuel assemblies while the fuel...
|
|
|
5812623 |
Self-aligning absorber tube for a control rod in a nuclear reactor
A control rod assembly for a nuclear reactor, wherein a plurality of absorber tubes are arranged and welded in a side-by-side array, the improvement wherein each absorber tube is formed with an...
|
|
|
5742651 |
Method of increasing depletion capacity of a control rod for a nuclear reactor
The control rod for a nuclear reactor includes a plurality of wings each having segments of neutron absorbing material exposed along the length of the rod. During refueling, the segments of neutron...
|
|
|
5719912 |
Control rod for a nuclear reactor
The control rod includes a plurality of elongated tubes containing neutron-absorbing material in a planar array to form wings on opposite sides of a central axis of the control rod. Each tube is...
|
|
|
5706318 |
Rectangular absorber tube for a control rod in a nuclear reactor
A control rod for a nuclear reactor incorporates a plurality of neutron absorber tubes containing neutron absorbing materials. The absorber tubes are substantially rectangular inside and outside,...
|
|
|
5684847 |
Silver-based alloy containing indium and cadmium for the production of neutron-absorber components, and use
The alloy contains, expressed in atomic percentages, 9 to 12% of indium and 4 to 5.35% of cadmium, the remainder consisting of silver with the exception of unavoidable impurities in very low...
|
|
|
5629965 |
Diving bell type control rod equipped with sodium inflow port
A diving bell type control rod of sodium bond type. The control rod including a plurality of control elements each comprising a pellet chamber for packing B 4 C pellets and disposed in a cladding...
|
|
|
5610959 |
Hafnium doped replacement rod for nuclear fuel reconstitution
A replacement rod for insertion into a nuclear fuel assembly to replace a fuel rod containing a neutron absorbing, fissile fuel, includes Hafnium sufficient to substantially replace the neutron...
|
|
|
5610956 |
Fast reactor core
A fast reactor core in which a coolant flows comprises a plurality of fuel assemblies each loaded with a fissionable material and a plurality of gas sealed assemblies disposed between the fuel...
|