Patents
Patents for G21C 17 - Monitoring; Testing (7,065)
05/1991
05/14/1991US5015434 Fixed in-core calibration devices for BWR flux monitors
05/14/1991US5015433 Neutron activated switch
05/14/1991US5014439 Quality assurance apparatus for dimensionally inspecting elongated components
05/14/1991US5014368 Method for monitoring the discharge of liquids and apparatus therefor
05/08/1991EP0426554A1 Intervention vehicle with tiltable propulsion units
05/08/1991EP0426519A1 Blocking device for a vertical conduit supporting and guiding an elongate-shaped element
05/08/1991EP0426453A2 Sensor for controlling water quality of reactor and method of controlling said water chemistry
05/07/1991US5012672 Hydrogen gas sensor and method of manufacture
05/01/1991CA2028984A1 Handling apparatus with tiltable thrusters
04/1991
04/30/1991US5011650 Nuclear power generating station equipment qualification apparatus
04/30/1991US5011206 Device for extracting foreign pieces or particles from fuel assemblies of a nuclear reactor
04/23/1991US5009835 Nuclear fuel rod helium leak inspection apparatus and method
04/23/1991US5009833 Expert system for surveillance, diagnosis and prognosis of plant operation
04/23/1991US5009105 Apparatus for ultrasonic examination of BWR shroud access cover plate retaining welds
04/23/1991US5008996 Machine for remotely lining the inside of a heat exchanger tube end with a sleeve
04/17/1991EP0423085A2 Automatic leak detection apparatus for process fluids from production and/or research plants, in particular energy plants
04/09/1991US5006301 Method and apparatus for control rod drop monitoring
04/09/1991US5006268 Device for laser welding inside a tubular element
04/03/1991EP0419994A1 Method for monitoring the activity of a gaseous or liquid means in a control-volume in nuclear plants and device for carrying it out
04/02/1991US5004354 Heat transfer measurement
04/02/1991CA1282249C Calibration impact hammer
03/1991
03/27/1991EP0419158A1 Device for magnetic identifications of a component such as a nuclear fuelassembly in a nuclear reactor, nuclear fuel assembly provided with such a magnetic identification device and method for the magnetic identification of a component such as a fuel assembly in a nuclear reactor
03/27/1991EP0418710A1 Positioning device for an inspection and/or repair mast of a water cooled nuclear reactor core barrel
03/27/1991EP0418708A2 Method and apparatus for remote positioning of an inspection device with a video camera attached to the device
03/26/1991US5002721 Apparatus for determining number of neutrons emitted by fissile material during induced fissile
03/26/1991US5001841 Apparatus for inspecting a profile of a rod
03/20/1991EP0417571A1 System and electrode for "in situ" monitoring the quality of high temperature water in power plants
03/19/1991CA2021080A1 System for identification of components
03/06/1991EP0415711A1 Median signal selector for feedwater control systems
03/06/1991CN1049743A Measurement equipment of boron concentration in water by means of double-channel neutron leakage and compensated absorption
03/05/1991US4998269 Device for on-line measurement of the gamma radiation emitted by the water in a nuclear reactor circuit, in particular the primary cooling circuit of a pressurized water nuclear reactor
03/05/1991US4997617 Real-time reactor coolant system pressure/temperature limit system
02/1991
02/26/1991US4996018 High pressure thimble/guide tube seal fitting with built-in low pressure seal especially suitable for facilitated and more efficient nuclear reactor refueling service
02/21/1991DE4014771A1 Pressure testing and purging of nuclear reactor pressure vessels - using dummy restrictor for empty vessels to allow normal circulation equipment for testing
02/20/1991CN2071821U Antiinterference unit of gas detector
02/19/1991US4994232 Method of inspecting the quality of nuclear fuel rod ends
02/12/1991US4992735 Remotely
02/12/1991US4991428 Ion chromatography method for low concentrations
02/06/1991EP0411874A2 System and method for remotely inspecting the interior walls of a cavity
02/06/1991EP0411873A2 Improved plant operating system employing a deterministic, probabilistic and subjective modeling system
02/06/1991EP0411869A2 Expert advice display processing system
02/05/1991US4990855 Conductivity probe for use in the presence of high intensity nuclear radiation
02/05/1991US4990304 Instrumentation tube features for reduction of coolant flow-induced vibration of flux thimble tube
02/05/1991US4990302 Apparatus for measuring nuclear reactor power distribution
01/1991
01/30/1991EP0410580A2 Scanning outer profiles of control rods
01/30/1991CN1048947A Method of determining distribution of power in core of nuclear reactor and method of calibrating neutron detectors around core of nuclear reactor
01/29/1991US4988476 Method of and apparatus for evaluating deformation of channel box of fuel assembly for use in nuclear reactor
01/29/1991US4988475 Device for checking the axial retention force on a peripheral fuel rod of a fuel assembly of a nuclear reactor
01/24/1991DE3923401A1 Remote controlled measuring device for submerged use - has measuring head retracted into a ring gauge for calibration before each measurement operation
01/24/1991DE3920856A1 Remote removal of foreign material from heat of PWR exchanger - has preformed tube to position suction tube or gripper inserted through it
01/23/1991EP0408939A1 Process and apparatus for sampling the air of the containment of a nuclear power station
01/22/1991US4987367 Method and apparatus for predicting deterioration of a member constituting a part of equipment
01/22/1991US4986954 Device for measuring parameters in the core of a nuclear reactor in operation
01/22/1991US4986953 Device for the support and positioning of means for checking and tools for working on fuel assemblies
01/22/1991US4986952 Protection system for protecting a nuclear reactor in the event of a reaction-inhibiting element falling
01/22/1991US4986112 Composite pressure vessel for a nuclear environment
01/16/1991EP0408405A1 Device for laser welding inside a tubular element
01/15/1991US4984627 Intervention device, particularly for checking, inspecting and maintaining heat exchangers
01/10/1991DE3942471C1 Sodium removal from surface of construction parts - by cleaning parts using ultrasonics in liq. hydrocarbon cleaning medium
01/08/1991US4983796 Method and apparatus for remote welding inside a tube, in particular in a steam generator in a nuclear power station
01/08/1991US4983351 Top head penetration, hydro-ball in-core instrumentation system
01/08/1991US4983350 Method and apparatus for detecting the fall of a control cluster in a nuclear reactor
01/03/1991DE4014777A1 Safety sensor for damage detection in gas cooled reactors - has movement detection by piston punctured container releasing trace element into gas circulation
01/02/1991EP0406075A1 Procedure for determining the power distribution in a nuclear reactor core and calibration procedure of neutron detectors around a nuclear reactor core
01/02/1991EP0406043A1 Tool bit working inside a tubular element
01/02/1991EP0405863A2 Automated thermal limit monitor
01/02/1991EP0405792A2 Movement detection system
01/01/1991US4981641 Purification of coolant water
01/01/1991US4981353 Position locating apparatus for an underwater moving body
01/01/1991US4981044 Ultrasonic sensor for testing U-shaped tubes of a heat exchanger
12/1990
12/31/1990CA2020213A1 Movement detection system
12/28/1990CA2019906A1 Laser welding device working inside a tubular element
12/28/1990CA2019905A1 Tool for working inside a tubular element
12/27/1990WO1990015948A1 Pneumatic operated valve data acquisitioner
12/27/1990EP0404637A1 Sealing plug for a steam generator tube
12/27/1990EP0403819A2 Conductivity probe for use in the presence of high intensity nuclear radiation
12/25/1990US4980118 Nuclear power generating station equipment qualification method and apparatus
12/19/1990EP0403223A2 Measuring thermal neutron flux
12/19/1990EP0403049A2 An assembly for facilitating inservice inspection of a reactor coolant pump rotor
12/18/1990US4978921 Electrode probe for use in aqueous environments of high temperature and high radiation
12/18/1990US4978917 Method for nondestructive measurement of heat affected zone of identification code on nuclear fuel rod
12/18/1990US4978834 Method and apparatus for remotely welding a bush inside a tube, in particular in a steam generator in a nuclear power station
12/18/1990US4978506 Corrosion product monitoring method and system
12/18/1990US4978495 Nuclear fuel pellet surface defect inspection apparatus
12/18/1990CA1278108C Filtration device for the cooling circuit of a nuclear reactor
12/11/1990US4976911 Using helium isotope
12/06/1990DE4017100A1 Fuel rod content inspection unit - has gamma radiation for excitation of low gamma emitting materials
12/05/1990EP0400813A2 Reference electrode probe
12/05/1990EP0400315A2 Sample container for radiation
12/04/1990US4975855 Shaft crack detection method
12/04/1990US4975241 Wear-reduction-sleeve for thimbles
12/04/1990US4975239 BWR core flow measurement enhancements
11/1990
11/28/1990EP0399725A1 Automatic transducer excitation source testing system
11/28/1990CN1010639B Method of connecting mineral-insulated electric cable, in particular in reactor building of nuclear boiler
11/22/1990EP0398792A1 Apparatus for the positioning of equipment in a cylindric cavity having perforations arranged in a regular pattern
11/21/1990CN1010523B Nuclear reactor having a longitudinally elongated vessel
11/20/1990US4971749 Nuclear excitation laser type intra-reactor neutron flux measuring system
11/07/1990EP0396366A2 Electrode probe
11/07/1990EP0396365A2 Electrode probe
11/07/1990EP0396321A2 A nuclear reactor core model updating method
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