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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7368726 | Method and apparatus for detecting high-energy radiation using a pulse mode ion chamber A method for measuring high-energy radiation flux includes applying a positive voltage to electrodes in an ion chamber filled with a gas capable of forming charged ions by a high-energy radiation, measuring a positive ion current signal related to ion currents induc... | 05/06/2008 |
| 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 pulse discrimination unit calculating n-th power values of the sample... | 02/19/2008 |
| 7302028 | Instrumented capsule for nuclear fuel irradiation tests in research reactors An instrumented capsule for nuclear fuel irradiation tests in research reactors includes an outer shell; a rod tip assembly assembled to a lower end plate of the shell, thus absorbing impact; fuel rod assemblies supported in the shell by means of support tubes and h... | 11/27/2007 |
| 7294840 | Apparatus and method for reducing microphonic susceptibility in a radiation detector The invention provides a system for removing or minimizing microphonic noise from a radiation detector signal, such as from a neutron detector, without creating excessive false counts in the electronics that count the radiation events. The system solves the micropho... | 11/13/2007 |
| 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. Reactor operation on a subset of the test rod pattern design, which may be ... | 05/22/2007 |
| 7193482 | Integrated circuit with tamper detection circuit A tamper detection circuit for an integrated circuit includes a pseudo-random generator. A first line is connected to the output of the generator and a second line is connected in parallel via an inverter. A number of XOR gates are coupled to the first and second li... | 03/20/2007 |
| 7183550 | Method and apparatus for analogue processing of the signal emitted by a particle detector Devices and methods for processing a signal emitted by a particle detector in which the methods include detecting in the signal the portions where the signal is greater than a predetermined value V1, measuring the maximum value Vmax reached by the signal in e... | 02/27/2007 |
| 7180055 | Nuclear sensor signal processing circuit An apparatus and method are disclosed for a compact and temperature-insensitive nuclear sensor that can be calibrated with a non-hazardous radioactive sample. The nuclear sensor includes a gamma ray sensor that generates tail pulses from radioactive samples. An anal... | 02/20/2007 |
| 7164130 | Signal enhancement module Events of interest are detected within a gamma ray detection system. Characteristics of undesired signals, including a multiplicity of events within the signal, a density of events within the signal, and other aspects are determined. The signal is filtered based on ... | 01/16/2007 |
| 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 pulse discrimination unit calculating n-th power values of the sample... | 11/21/2006 |
| 6836523 | 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 pulse discrimination unit calculating n-th power values of the sample... | 12/28/2004 |
| 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 reaction to slightly alter the reactivity while monitoring an output of... | 10/05/2004 |
| 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 a detector assembly installed in a nuclear reactor; performing power... | 06/01/2004 |
| 6535568 | Method and system for generating thermal-mechanical limits for the operation of nuclear fuel rods A method and system for demonstrating compliance of nuclear fuel rods with fundamental licensing criteria for fuel rod internal pressure during nuclear reactor operation is presented. A nuclear fuel rod evaluation process is performed during the fuel cycl... | 03/18/2003 |
| 6522709 | Nuclear in-core instrument (ICI) assembly with compressed flexible hose sheath A protective hose, and a method of making the same, for an in-core instrument assembly used in a nuclear reactor, including a first end that is hermetically sealed to a first member of in-core instrument assembly such as a bullet nose, a second end that i... | 02/18/2003 |
| 6477219 | Nuclear reactor power distribution monitoring system and method including nuclear reactor instrumentation system A nuclear reactor instrumentation system including a plurality of incore nuclear instrumentation assemblies arranged in a gap between a number of fuel assemblies charged in a reactor core. The incore nuclear instrumentation assemblies each include a fixed... | 11/05/2002 |
| 6477218 | Control system of nuclear power plant, and control method thereof A control system, and a control method, of a nuclear power plant capable of easily executing automatic output regulation by an automatic power regulator system even when a lower-accuracy maximum linear heat generation rate and a lower-accuracy minimum cri... | 11/05/2002 |
| 6430247 | Method and system for monitoring at least one operating parameter of the core of a nuclear reactor Neutron flux is measured using a subset of detectors (8) selected from a set of detectors (8) introduced into fuel assemblies (2) of the core (1) to obtain measurement signals, the number n of detectors (8) of the subset being at most equal to 15% of the ... | 08/06/2002 |
| 6406064 | Positive locking device for reactor instrumentation protection sleeve assembly A locking device for a reactor instrumentation protective sleeve and reactor instrumentation column assembly. The locking device includes a protective sleeve coupled to the instrumentation column by a selectively operable and closeable clip assembly. The ... | 06/18/2002 |
| 6400786 | Process and device for monitoring at least one operating parameter of the core of a nuclear reactor During operation of the nuclear reactor, at specified time intervals, a neutron flux is measured using a set of neutron flux detectors which are fixed and arranged in the core (1) of the nuclear reactor, the maximum number n of detectors (8) being 15% of ... | 06/04/2002 |
| 6339629 | System for monitoring power of nuclear reactor In a system for monitoring power of a nuclear reactor, a plurality of neutron flux measuring devices are arranged in a reactor core of the nuclear reactor for measuring neutron flux so as to generate neutron flux signals on the basis of the measured neutr... | 01/15/2002 |
| 6236698 | Nuclear reactor power distribution monitoring system and method including nuclear reactor instrumentation system A nuclear reactor instrumentation system including a plurality of in core nuclear instrumentation assemblies arranged in a gap between a number of fuel assemblies charged in a reactor core. The income nuclear instrumentation assemblies each include a fixe... | 05/22/2001 |
| 5793827 | Material surveillance specimen holder for core shroud of boiling water reactor A device for carrying out a surveillance program to monitor the environmental effect of radiation and high-temperature oxygenated water on the shroud material in an operating reactor. The device is a holder containing shroud material specimens and encapsu... | 08/11/1998 |
| 5774515 | Particle measuring apparatus, method for particle measurement, and nuclear power plant A neutron particle measuring apparatus includes a neutron converter to generate alpha rays in response to incidence of neutron, a scintillator to receive as input the alpha rays generated from the neutron converter so as to emit and transmit scintillation... | 06/30/1998 |
| 5680423 | Method and apparatus for detecting neutrons The instant invention is a method for making and using an apparatus for detecting neutrons. Scintillating optical fibers are fabricated by melting SiO2 with a thermal neutron capturing substance and a scintillating material in a reducing atmosp... | 10/21/1997 |
| 5596612 | Testing arrangement for materials testing, particularly in a pressurized-water reactor A testing arrangement (14) and a method for materials testing at lead-throughs in a cap of a pressurized-water reactor, comprising a flexible sword (85) which at one end is equipped with a probe. Since the lead-throughs consists of a first tube passing th... | 01/21/1997 |
| 5579354 | Method of measuring a corrosion potential, method of simulating potential characteristics of a reaction rate, and plant monitoring system adopting them A system for monitoring the operation of a plant, which includes the facility of simulating the corrosion potential of a material and which can assess the effect of a countermeasure for mitigating the corrosion environment of the material, with the corros... | 11/26/1996 |
| 5577083 | Method and apparatus for electro-protection of piping systems and reactor-internals from stress corrosion cracking A method and an apparatus for electrically suppressing electrochemical potential near highly susceptible components of a boiling water reactor. A small self-powered, electrical device is affixed to the metal area to be protected, which device has the capa... | 11/19/1996 |
| 5535253 | Method and device for detecting leaks in penetrations of a nuclear reactor vessel head during operation The method and the device are applicable to the penetrations (2) of a pressurised water nuclear reactor vessel head (1) during operation. The device includes a double circuit for picking off two gas samples (100, 16, 17; 12, 13, 14, 15) and a measurement assem... | 07/09/1996 |
| 5517537 | Integrated acoustic leak detection beamforming system A system for mapping absolute acoustic noise intensity in a three-dimensional acoustic noise field, and using three-dimensional absolute noise intensities to infer operational or performance characteristics of components or structures within the monitored... | 05/14/1996 |
| 5485491 | Online diagnostic system for rotating electrical apparatus An online system for diagnosing operability of a rotating electrical apparatus includes sensors producing electrical variables corresponding to operating conditions of the apparatus, data converters for converting the electrical variables to digital value... | 01/16/1996 |
| 5481575 | Method and a device for detecting core oscillations in a nuclear reactor A method and a device for detecting oscillations in the core of a boiling-water nuclear reactor (BWR) comprising a plurality of neutron detectors, wherein instability is detected based on oscillations in the output signals of the neutron detectors. For ea... | 01/02/1996 |
| 5442555 | Combined expert system/neural networks method for process fault diagnosis A two-level hierarchical approach for process fault diagnosis is an operating system employs a function-oriented approach at a first level and a component characteristic-oriented approach at a second level, where the decision-making procedure is structure... | 08/15/1995 |
| 5406598 | System for monitoring power of nuclear reactor A system for monitoring power, particularly a power distribution, of a nuclear reactor includes a plurality of neutron flux measuring units disposed in a core of the nuclear reactor for measuring neutron flux in the core and generating neutron flux signal... | 04/11/1995 |
| 5341678 | Method for determining thickness of ferromagnetic material deposition on nuclear fuel rods A method for determining the thickness of ferromagnetic material deposited on a nuclear fuel rod. Calibration samples of known thickness and known permeability are placed between the probe of an eddy current sensor and a conductive surface. A plurality of... | 08/30/1994 |
| 5333159 | Radiation gauge A radiation gauge is provided which comprises a casing having an evacuated inside, a pair of electrode plates contained within the casing, and an insulating material of aluminum oxide disposed between the pair of electrode plates, the insulating material ... | 07/26/1994 |
| 5309485 | Core automated monitoring system An automated monitoring system and method of operation is provided for a nuclear reactor having a pressure vessel containing a reactor core for boiling water to generate steam. A plurality of monitors provide signals for respective monitoring parameters f... | 05/03/1994 |
| 5295166 | Start-up range neutron monitor system A start-up range neutron monitor system for monitoring neutrons generated from a neutron source comprises a neutron detector disposed in a non-earthed state and adapted to detect neutrons generated from the neutron source, a coaxial cable for externally t... | 03/15/1994 |
| 5249207 | Apparatus for monitoring the neutron flux of a nuclear reactor Apparatus for monitoring the neutron flux of a nuclear reactor in biological protection concrete (6) surrounding the vessel (4) containing the reactor core (2) and having, in vertical shafts (8 to 22) located in the concrete in the vicinity of said vessel... | 09/28/1993 |
| 5229066 | Control rod position indication system The present invention is a system which determines nuclear reactor control rod axial position using a deviation signature database generated from a current or reference signal pattern produced by one or more strings of axially dispersed fixed incore detec... | 07/20/1993 |
