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7620139 |
Method of improving nuclear reactor performance during reactor core operation
In the method, performance of a nuclear reactor may be improved by implementing an operational solution for the nuclear reactor using at least one control rod criteria in order to increase scram...
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7616727 |
Methods of editing fuel bundle groups
A method of fuel bundle consideration in a reactor. The method includes creating or editing bundle groups including fuel bundles.
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7613272 |
Methods of using fuel bundle groups as evaluation constraints
A method of fuel bundle consideration in a reactor. The method includes creating or editing bundle groups including fuel bundles.
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7596198 |
Over temperature and over power delta temperature operating margin recovery method and reactor system employing the same
A method is provided for recovering operating margin in a nuclear reactor. The reactor includes a steam generator, a Reactor Coolant System (RCS) having a hot leg with a temperature, T hot , and a...
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7593501 |
Segment make-up system and method for manufacturing nuclear fuel rods
A method to insert nuclear fuel pellets into a fuel rod cladding tube, having the steps of providing a cladding tube, providing at least one nuclear fuel pellet to be incorporated into the cladding...
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7574337 |
Method of determining a fresh fuel bundle design for a core of a nuclear reactor
A method for determining a fresh fuel bundle design for a core of a nuclear reactor may include defining a plurality of inputs including user-defined target conditions for evaluating one or more...
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7532698 |
Systems and methods of predicting a critical effective k for a nuclear reactor
Systems and methods for a method for determining a critical effective k at an off-rated core state of a nuclear power plant includes determining, for the off-rated core state a control rod density,...
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7512207 |
Apparatus for delivering a tool into a submerged bore
An apparatus for delivering a tool into a nuclear reactor jet pump submerged in a reactor pool includes a frame, and a propulsion unit for controlling the movement of the tool delivery apparatus...
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7505545 |
Method for recognizing step movement sequence of control rod drive mechanism of nuclear reactor
A method for recognizing the step movement sequence of a control rod drive mechanism of a nuclear reactor, which withdraws and inserts a control rod of a nuclear reactor, includes the steps of:...
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7426458 |
Nuclear reactor reload licensing analysis system and method
A system and computer implemented method for automatically performing reload licensing analysis of a nuclear reactor and preparing and generating a reload licensing report. The system and method...
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7420165 |
Method of determining the power transfer of nuclear component with a layer of material placed upon a heating surface of the component
A method to characterize the power transfer of a nuclear component is provided including the steps of obtaining a sample of a deposit layer on a side of a nuclear component, obtaining a scanning...
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7409032 |
Method of fuel bundle consideration in a reactor
A method of fuel bundle consideration in a reactor. The method includes creating or editing bundle groups including fuel bundles.
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7388369 |
Method and apparatus for measuring hydrogen concentration in zirconium alloy components in the fuel pool of a nuclear power plant
The present invention provides a method for measuring hydrogen concentration in an electrically conductive material, such as a nuclear fuel rod, comprising calibrating an eddy current probe at a...
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7386086 |
Printed circuit card
A nuclear reactor plant protection system printed circuit card comprises a first logic device having a number of basic logic circuits, and a second logic device operatively connected with the first...
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7349517 |
System for measuring burn-out of fuel elements of a high-temperature reactor
The burnout of a fuel element in a reactor is determined by first transferring a fuel element from a reactor to a measuring position and then subjecting the transferred fuel element at the position...
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7340387 |
Control rod driving simulator for verification of control rod driving mechanism control system of atomic power plant
A control rod driving simulator has a control rod driving unit having a plurality of coil members vertically mounted therein, a control rod mounted vertically movably through the centers of the...
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7333585 |
Radiation measurement device
A radiation measurement device includes a radiation detector generating an analog signal containing pulse components, an A/D converter converting the analog signal into sampled data, an n-th power...
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7308069 |
Device and method for controlling the exterior aspect of fuel rods for nuclear reactors
The invention concerns a device ( 1 ) for controlling the exterior aspect of fuel rods ( 2 ) for nuclear reactors, said device comprising optical means ( 40 ) having at least one camera ( 42, 42′...
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7222061 |
Method and arrangement for developing rod patterns in nuclear reactors
In the method, a set of limits applicable to a test rod pattern design are defined, and a sequence strategy for positioning one or more subsets of the test rod pattern design is established....
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7158919 |
Remote monitoring system
A remote monitoring system including a sub-system, local to a nuclear power plant and a remote sub-system at an operations base. Process data is collected manually by a hand-held computer and...
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7155715 |
Distributed software system visualization
A data management system stores and visualizes data generated during process management. The data management system provides different data management services and definitions of these are stored...
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7139355 |
Method of operating a nuclear power plant at multiple power levels
A method of operating a nuclear power plant includes determining and licensing a maximum power level at which the power plant can be operated subsequent to the beginning of a fuel cycle, and with...
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7139354 |
Radiation measurement device
A radiation measurement device includes a radiation detector generating an analog signal containing pulse components, an A/D converter converting the analog signal into sampled data, an n-th power...
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7092477 |
BWR inspection manipulator
A reactor service manipulator delivery system supported on a remotely operated trolley that travels on top of a track attached to the steam dam of a BWR shroud. The trolley has a mast and pulley...
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6987826 |
Maximum extended load line limit analysis for a boiling water nuclear reactor
A method for expanding the operating domain of a boiling water nuclear reactor that permits safe operation of the reactor at low core flows is described. The operating domain is characterized by a...
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6937686 |
Iron control in BWR's with sacrificial electrodes
Method for controlling the level of iron in feedwater of a BWR wherein an iron-containing sacrificial electrode in placed contact with the feed water dissolution of the electrode is induced at a...
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6928132 |
Methods and apparatus for operating a system
A method for operating a system having a plurality of modes and interlocks between the modes is provided. The method includes operating the system in a first mode and switching the system to a...
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6917044 |
High power high yield target for production of all radioisotopes for positron emission tomography
A high power high yield target for the positron emission tomography applications is introduced. For production of Curie level of Fluorine-18 isotope from a beam of proton it uses about one tenth of...
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6895066 |
Measuring head and measuring assembly for a nuclear fuel rod
A measuring head is used in measuring an assembly part of a nuclear facility, such as a fuel rod, a fuel assembly box, or a spacer of the fuel assembly. The measuring head is capable of augmenting...
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6895065 |
Method and apparatus for identifying nuclear fuels
The device comprises a detector ( 15 ) of radiation that could be neutron radiation and a detector ( 16 ) of another type of radiation, for example gamma radiation. The process consists in deducing...
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6879653 |
Method and device for measuring the diameter of a peripheral rod in a fuel assembly of a nuclear reactor
The diameter of a segment of a peripheral rod in a fuel assembly is measured between two successive spacer grids. A measuring tool is positioned at a level situated between the two successive...
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6876715 |
Measurement system of torsion vibration for reactor internal pump
Object of this invention is to provide an axial torsional vibration measurement device of the reactor internal pump capable of measuring the axial torsional vibration easily. The vibration detector...
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6873671 |
Reactor manual control system
In a boiling water reactor controlling each control rod hydraulically by driving a solenoid valve, the control system comprises an operation control means 41 having a duplicated data processing...
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6865243 |
Method of detecting cracks in jet pump beams of a nuclear reactor
A method of inspecting a jet pump beam in a nuclear reactor is provided. The reactor includes at least one jet pump assembly with each jet pump assembly including at least one jet pump beam. Each...
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6801885 |
Process for synthesizing a database for nuclear power plant containment evaluation
A method of evaluating a containment building design includes the steps of assembling a first database of test results; selecting models (algorithms) for the design to be evaluated; comparing a...
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6801593 |
Subcritical reactivity measurement method
A method of monitoring reactivity changes in a nuclear reaction when the nuclear reaction is subcritical. The method controls the parameter of the nuclear reaction that affects reactivity of the...
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6795801 |
Apparatus and method for analyzing anisotropic particle scattering in three-dimensional geometries
The disclosed method, a technique for analyzing anisotropic particle scattering, includes the step of establishing a three-dimensional geometric representation of an object. A set of rays is then...
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6785692 |
Systems and methods for coordinating QA events
A method is provided for coordinating QA event schedules using a network-based system. The system includes a server system coupled to a database and at least one client system. The method includes...
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6744840 |
Incore monitoring method and incore monitoring equipment
An incore monitoring method of a nuclear reactor, includes, measuring neutron flux levels at pitch levels corresponding to local power range monitor sensors arranged along an axial direction inside...
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6721381 |
Seal arrangement for in-core instrument housing
A seal arrangement for providing a seal between a nuclear reactor in-core instrument housing and an instrument contained within the housing includes a lower seal assembly surrounding an outer...
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6707870 |
Method for determining friction forces occurring on an object moving in a guide on an inaccessible site
With this method it is possible to evaluate opposing friction forces occurring after a certain operating time on a mobile object in a guide. The method consists of measuring the variations in the...
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6704385 |
Method for simulating the response of a detector of radiation emitted by radioactive objects and method for controlling nuclear fuel elements using said simulation
Process for simulation of the response of a detector of radiation emitted by radioactive objects and process for inspection of nuclear fuel elements using this simulation. The objects ( 16 )...
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6680994 |
Monitoring the contents of a container by ultrasonic means
The contents of a container 1 are non-intrusively monitored by probing the container with an ultrasonic signal, and measuring changes in the ultrasound signature of the received signal after the...
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6680686 |
Remote ionizing radiation detector
A method and apparatus for the detection of radioactive material in an area is disclosed. The apparatus comprises a transmitter operatively arranged to transmit electromagnetic radiation, a...
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6665363 |
Method of inspecting the welding of a sealed closure plug of a nuclear reactor fuel element
Before welding, the plug and the sleeve of the fuel rod being in the welding position at the welding station, the sleeve and the plug of the fuel rod are rotated about their common axis with the...
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6636577 |
Laser induced fluorescence water measurement system for nuclear reactors
A water monitoring system for a nuclear reactor is provided. In an exemplary embodiment, the water monitoring system includes a fiber optic cable having a first end and a second end, with the first...
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6633622 |
Reactor power output measurement device
A reactor power output measurement device measuring a neutron flux with a traversing incore probe (TIP) traversing in a vertical direction in a core of a reactor, and calibrating a detection...
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6625244 |
Inspection apparatus for examining jet pump beams in nuclear reactors
An inspection apparatus for inspecting jet pump beams of nuclear reactors is provided. The inspection apparatus includes a base straddlingly mountable on a jet pump beam. The base includes a beam...
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6610185 |
Electrochemical corrosion potential sensor and method of making
A sensor for measuring electrochemical corrosion potential, and a method for manufacturing a sensor, the sensor comprising a tubular ceramic probe having a closed tip at one end, the probe at least...
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6606367 |
Device for measuring the drop time of control rods into the core of a nuclear reactor
The measurement device comprises a real-time measurement-signal acquisition module ( 25 ) and means ( 23, 24 ) for connecting the cables for picking up the voltage from electrical windings for...
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