| Patents for G21C 19 - Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel (6,229) |
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| 07/31/1991 | EP0439292A1 Fuel assembly transfer basket for pool type nuclear reactor vessels |
| 07/31/1991 | CN1053414A Waterglass precipitate recovery process |
| 07/30/1991 | US5035875 In a container for radioactive material for combining hydrogen and oxygen to form water; prevents explosion |
| 07/30/1991 | US5035852 Tapered leaf support pin for operating plant guide tubes |
| 07/24/1991 | EP0437436A1 Process and device for removing flammable gaseous mixtures from a container |
| 07/17/1991 | EP0437394A1 Agitator-drive unit, especially for a device for the reprocessing of irradiated fuel by means of a mixer-setler equipment |
| 07/17/1991 | EP0436942A2 Device for removing hydrogen from hydrogen, oxygen and aerosol containing gaseous mixture |
| 07/16/1991 | US5032348 Stowage rack for nuclear fuel elements |
| 07/11/1991 | WO1991009996A2 Transport system, in particular for transporting silicon monocrystals through the tank of a research reactor |
| 07/11/1991 | DE4003833A1 Catalytic hydrogen gas absorption unit for nuclear reactors - has filter enclosure to protect catalytic coating from aerosol fat and steam pollution before working temp. is reached |
| 07/09/1991 | US5030411 Removal of impurities from coolant of a nuclear reactor |
| 07/03/1991 | EP0435744A1 Fuel assembly bottom nozzle for nuclear light water reactor |
| 07/03/1991 | CN1013026B Filter with boiler-shaped filtering elements |
| 07/02/1991 | US5028402 Process for separating by means of crown ethers the uranium and plutonium present in an aqueous medium resulting from the reprocessing of irradiated nuclear fuels |
| 07/02/1991 | US5028384 Oxidation of Volatile Nitrogen Compounds |
| 07/02/1991 | US5028379 Fuel handling system for nuclear reactor plants |
| 06/27/1991 | DE3942387A1 Transportsystem, insbesondere zum transportieren von siliziumeinkristallen durch das becken eines forschungsreaktors Transport system, particularly for transport of silicon single crystals by the pool of a research reactor |
| 06/26/1991 | EP0434513A1 Method for separating plutonium and uranium from fission products using crown ethers, in the first stages of treating irradiated nuclear fuel |
| 06/26/1991 | EP0434291A1 Fuel handling system for nuclear reactor plants |
| 06/26/1991 | EP0433860A2 Waterglass precipitate recovery process |
| 06/26/1991 | EP0433620A1 Reduced flow resistance cast lower end fitting |
| 06/19/1991 | EP0433175A1 Process for recovering plutonium (IV) by means of crown-ether from solutions like aqueous waste solutions, concentrated solutions of fission products and concentrated solutions of plutonium |
| 06/19/1991 | EP0432739A1 Fuel assembly for a lightwater nuclear reactor |
| 06/19/1991 | EP0432738A1 Fuel assembly for a boiling water nuclear reactor |
| 06/18/1991 | US5024807 Debris catching spring detent spacer grid |
| 06/18/1991 | US5024806 Enhanced debris filter bottom nozzle for a nuclear fuel assembly |
| 06/18/1991 | US5024803 Emergency device for the control of the displacement for a carrier conveying a nuclear fuel assembly |
| 06/18/1991 | US5024574 Random fuel pellet vacuum transfer apparatus |
| 06/16/1991 | CA2031750A1 Method for separating by using crown compounds plutonium from uranium and from fission products in the initial stages for the reprocessing of irradiated nuclear fuels |
| 06/16/1991 | CA2031749A1 Method for recovering with the aid of a crown compound plutonium (iv) present in solutions, such as aqueous effluents, concentrated solutions of fission products and concentrated solutions of plutonium |
| 05/28/1991 | US5019327 Fuel assembly transfer basket for pool type nuclear reactor vessels |
| 05/28/1991 | US5019325 Method for removing and installing a control rod drive |
| 05/28/1991 | US5019324 Centering arrangement for aligning the mutually adjacent openings of a lock and a container for holding radioactive materials |
| 05/28/1991 | US5018772 Latching device for securing a closure to a cask for transporting radioactive waste |
| 05/21/1991 | US5017330 Device for opening and closing a filter in a nuclear plant and process for replacing the filter packing |
| 05/21/1991 | US5016776 Nuclear fuel container tamper-proof closure |
| 05/07/1991 | USH920 Method of removing cesium from steam |
| 05/07/1991 | US5013520 Apparatus for inserting fuel rods into a can |
| 05/07/1991 | CA1283821C Gas wall oven |
| 05/02/1991 | DE3935916A1 Ignition unit for hydrogen pockets in nuclear reactor vessel - has only mechanical and electrical parts with no semiconductor material for automatic operation at threshold levels or by hand |
| 05/02/1991 | DE3935645A1 Underwater disposal of spent nuclear fuel elements - by entering fuel elements into shaft for cutting and circulating water using filter as barrier against pollution entering pond |
| 04/30/1991 | US5011651 Arrangement for transferring fuel rods from a first receptacle to a second receptacle |
| 04/30/1991 | US5011206 Device for extracting foreign pieces or particles from fuel assemblies of a nuclear reactor |
| 04/25/1991 | DE3934826A1 Processing nuclear pebble pile elements - by crushing and adding to steel melt |
| 04/24/1991 | EP0423945A1 Purifier for nuclear reactor cooling water and method of purification |
| 04/23/1991 | US5009839 Nuclear fuel assembly bottom nozzle plate |
| 04/23/1991 | US5009836 Method for temporary shielding of reactor vessel internals |
| 04/17/1991 | EP0422950A1 Nuclear fuel assembly with debris filter |
| 04/16/1991 | US5007213 Lock system for passing objects from a radioactively contaminated chamber into a container |
| 04/11/1991 | DE3932486A1 Neutron flux sensor for nuclear fuel recovery plants - is positioned and shielded for isolation from radiation from adjacent containers and background gamma radiation |
| 04/03/1991 | EP0420723A2 Method of compacting radioactive metal wastes |
| 04/03/1991 | EP0419777A1 Actinide recovery |
| 03/30/1991 | CA2020601A1 Actinide recovery |
| 03/28/1991 | DE3931075A1 Swarf free underwater service machining for nuclear reactor parts - has tank with work piece machined, from beneath by tool holer with traverse mechanism and interchangeable cutters |
| 03/27/1991 | EP0419364A1 Pulsating annular column functioning in continuous heavy phase with means for limiting the drag of heavy phase into the light phase in presence of gaseous evaporation |
| 03/27/1991 | EP0419158A1 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 |
| 03/27/1991 | EP0418710A1 Positioning device for an inspection and/or repair mast of a water cooled nuclear reactor core barrel |
| 03/27/1991 | EP0418628A1 Enhanced debris filter bottom nozzle for a nuclear fuel assembly |
| 03/26/1991 | US5001949 Apparatus and method for removing nuclear fuel assembly end pieces |
| 03/26/1991 | US5001840 Control rod housing alignment apparatus |
| 03/26/1991 | US5001818 Underwater milling machine system for core barrel repair |
| 03/19/1991 | US5000927 Method of regulating a purex solvent extraction process |
| 03/19/1991 | US5000908 Pulsed high-pressure (PHP) drain-down of steam generating system |
| 03/19/1991 | US5000906 System and method for removing and consolidating the fuel rods of a nuclear fuel assembly |
| 03/19/1991 | US5000617 Store |
| 03/19/1991 | CA2021080A1 System for identification of components |
| 03/13/1991 | EP0416143A1 Device for the removal of hydrogen and dissolution of barrier layers |
| 03/13/1991 | EP0416140A1 Device for removing hydrogen and harmful substances from a gas mixture containing hydrogen and oxygen |
| 03/06/1991 | EP0414761A1 Device for controlled combustion of an ignitable hydrogen/air mixture in a nuclear power plant |
| 03/06/1991 | CN1011930B Method and apparatus for taking ball fuel elements from ball reactors |
| 02/26/1991 | US4996018 High pressure thimble/guide tube seal fitting with built-in low pressure seal especially suitable for facilitated and more efficient nuclear reactor refueling service |
| 02/26/1991 | US4995158 Apparatus for servicing a jet pump hold down beam in a nuclear reactor |
| 02/14/1991 | DE4023793A1 Nuclear sepn. from fission prods. - in nitric acid soln. using pure tri:butyl-phosphate extractant |
| 02/14/1991 | DE3935646A1 Disposal of radioactive parts from nuclear power plant - using dry cell to house tools for compression and chopping to avoid water purificn., tooling problems and swarf in ponds |
| 02/14/1991 | DE3926155A1 Flange seal for pipework in nuclear and no-go areas - has metal free carbon seals in carrier, clipped to remote controlled free flange for ease of assembly to fixed flange |
| 02/13/1991 | EP0412753A1 Method for enhancing personnel safety in operating a nuclear reactor plant, and means therefor |
| 02/12/1991 | US4992407 Catalyst consisting of a metal layer system for the removal of hydrogen from a gas mixture |
| 02/12/1991 | US4992232 Method to control N-16 radiation levels in steam phase BWRs |
| 02/12/1991 | US4991280 Method for replacing bolts on core components in nuclear reactors |
| 02/07/1991 | WO1991001559A1 Improved device for eliminating combustible gaseous mixtures |
| 02/06/1991 | EP0411870A1 Cleaning and excavating tool for control rod canopy seals |
| 02/06/1991 | EP0411841A1 Cylindrical refueling mast |
| 01/31/1991 | DE3924553A1 Ergaenzte vorrichtung zur beseitigung brennbarer gasgemische Supplemented device for removal of combustible gas mixtures |
| 01/29/1991 | US4988474 Process and holding component for repair of a nuclear fuel assembly damaged at the periphery of a spacer support |
| 01/29/1991 | US4988473 Self-latching reactivity-reducing device for use in on-site spent fuel assembly storage |
| 01/22/1991 | US4986955 Device for removing peripheral fuel rods from a fuel assembly of a nuclear reactor |
| 01/15/1991 | CA1279002C Retracting, aligning, and fixing device |
| 01/10/1991 | DE3920534A1 Nuclear waste container transfer unit - has equipment for direct transfer into ambient air cooled containers in concrete silos |
| 01/08/1991 | US4983300 Process for the reextraction in aqueous solution of the plutonium present in an organic solvent, more particularly usable for splitting uranium and plutonium |
| 01/02/1991 | EP0405171A1 Random fuel pellet vacuum transfer apparatus |
| 01/01/1991 | US4981641 Purification of coolant water |
| 01/01/1991 | US4981640 Nuclear fuel assembly reception and dismantling cell |
| 01/01/1991 | US4981616 Spent fuel treatment method |
| 12/27/1990 | WO1990015759A1 Nuclear fuel container tamper-proof closure |
| 12/27/1990 | EP0404431A2 Annealing unit insertion and removal system |
| 12/27/1990 | EP0404429A1 Coffer dam for temporary shielding of reactor vessel internals and method of assembly |
| 12/27/1990 | EP0404428A1 Water filled tanks for temporary shielding of reactor vessel internals and method of assembly |
| 12/27/1990 | EP0403746A1 Shipping device for heater unit assembly |
| 12/27/1990 | CA1278177C Method of manufacturing a double-wall container including a neutron-absorbing screen for transporting and storing radio-active material |
| 12/13/1990 | DE3918444A1 Heat exchanger for coolant loops of nuclear waste storage - gives improved performance from shrouded tube bundle design |