Patents Assigned to Framatome GmbH
  • Patent number: 11060718
    Abstract: The invention relates to a flexible lance for machining or inspecting a tubesheet of a boiler, having a first strip made of a flexible, metallic material and a second strip made of a flexible, metallic material, wherein the second strip is arranged on the first strip in the longitudinal direction, and wherein at least the second strip has a shaped portion extending in the longitudinal direction for receiving a supply line for a machining or inspection head arranged at the free end of the flexible lance, and wherein the first strip is connected to the second strip such that an open side of the shaped portion is covered by the first strip so as to form a guide channel, and wherein at least one edge region of the flexible lance, extending in the longitudinal direction, is formed only by the first strip or the second strip.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: July 13, 2021
    Assignee: FRAMATOME GMBH
    Inventor: Zafer Alaz
  • Patent number: 10954107
    Abstract: A gripper a fuel element, comprises a housing, an inner part arranged inside the housing, the inner part and the housing being displaceable relative to one another in an axial direction, with the inner part movable between a first end position and a second end position, a catch member movable between a gripping position and a release position, a gripper spring between the housing inner part counteracting movement of the inner part from the second end position, or an intermediate position (Z) between the first and second end position, to the first end position, and a damping system comprising a first and second connecting member for connecting the damping system to the housing, inner part and/or the fuel element loading machine, and a spring member arranged on the first and/or the second connecting member counteracting movement of the inner part from an intermediate position (Z) to the second end position.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 23, 2021
    Assignee: FRAMATOME GMBH
    Inventors: Peter Forster, Christian Gratz, Stefan Stark
  • Patent number: 10950360
    Abstract: A method for treating waste water from the decontamination of a metal surface in a primary coolant circuit of a nuclear reactor comprises discharging a predetermined amount of an oxidation solution from the primary coolant circuit into a reduction zone connected to the primary coolant circuit and reacting the oxidation solution with a reducing agent to form a reaction solution that is freed of oxidizing agent, and passing the reaction solution over an ion-exchange resin in order to form a desalinated solution, and returning the desalinated solution to the primary coolant and/or disposing of the desalinated solution. A waste water treatment apparatus for carrying out the method is also provided.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: March 16, 2021
    Assignee: FRAMATOME GMBH
    Inventors: Christian Topf, Luis Sempere Belda
  • Patent number: 10820403
    Abstract: The invention provides a sintered rare earth metal oxide target for producing a radioisotope in an instrumentation tube of a nuclear power reactor, wherein the sintered target has a density of at least 90 percent of the theoretical density, and wherein the sintered target contains chromium in an amount of from 500 to 2000 ?g/g, and Mg and/or Ca in an amount of from 1000 to 6000 ?g/g. The sintered target is prepared by providing a rare earth metal oxide powder, blending the rare earth metal oxide powder with chromium oxide, dry granulating and consolidating the powder in a mold to form a spheroidal green body, and sintering the green body in solid phase to form a spheroidal ytterbia target.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: October 27, 2020
    Assignee: FRAMATOME GMBH
    Inventor: Beatrice Schuster
  • Patent number: 10770190
    Abstract: A catalytic recombiner and filter apparatus is especially suited for placement in a containment of a nuclear reactor. The apparatus has a natural convection flow duct with a number of catalytic elements for recombining hydrogen and oxygen contained in a gas flow through the flow duct. The catalytic recombiner and filter apparatus provides for reliable hydrogen reduction and iodine filtering for a gas flow even for a comparatively long period of operation. The catalytic recombiner and filter apparatus includes a number of adsorber elements with iodine adsorbing surfaces and with macroscopic flow channels in between. The iodine adsorbing surfaces are flown over by the gas flow, and the adsorber elements are arranged, when in use, downstream of the catalytic elements in a direction of the gas flow.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: September 8, 2020
    Assignee: Framatome GmbH
    Inventors: Axel Hill, Stefan Rosenberger
  • Patent number: 10741295
    Abstract: A nuclear facility includes a fuel element pool which is filled with a cooling liquid. A fuel element rack, which is disposed in the fuel element pool, includes compartments for receiving fuel elements. The fuel elements received in the compartments are in direct contact with the cooling liquid in the fuel element pool. At least one cooling element is disposed in one of the compartments instead of a fuel element. The cooling element acts as a heat exchanger through which a coolant can flow, the cooling element is connected into a cooling circuit and the cooling element is immersed in the cooling liquid.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: August 11, 2020
    Assignee: Framatome GmbH
    Inventors: Thomas Fuchs, Leo Ornot, Markus Reck, Matthias Reuter
  • Patent number: 10734127
    Abstract: A method of producing radionuclides from irradiation targets in a nuclear reactor uses at least one instrumentation tube system of a commercial nuclear reactor. Irradiation targets and dummy targets are inserted into an instrumentation finger and the irradiation targets are activated by exposing them to neutron flux in the nuclear reactor core to form a radionuclide. The dummy targets hold the irradiation targets at a predetermined axial position in the reactor core corresponding to a pre-calculated neutron flux density sufficient for converting the irradiation targets to the radionuclide. Separating the dummy targets from the activated irradiation targets includes exposure to a magnetic field to retain either the dummy targets or the activated irradiation targets in the instrumentation tube system and release the other one of the activated irradiation target or the dummy target from the instrumentation tube system. An apparatus adapted to the above method is also provided.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: August 4, 2020
    Assignee: Framatome GmbH
    Inventors: Thomas Fabian Richter, Alexander Sykora, Lothar Wistuba
  • Patent number: 10714224
    Abstract: The invention provides a method of preparing irradiation targets for radioisotope production in instrumentation tubes of a nuclear power reactor, the method comprising the steps of: providing a powder consisting of an oxide of a rare earth metal having a purity of greater than 99% and, optionally, an organic binder; pelletizing the powder and optionally the organic binder to form a substantially spherical green body having a diameter of from between 1 to 10 mm; and sintering the spherical green body in solid phase at a temperature of at least 70 percent of a solidus temperature of the rare earth metal oxide powder and for a time sufficient to form a round sintered rare earth metal oxide target having a sintered density of at least 80 percent of the theoretical density.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: July 14, 2020
    Assignee: FRAMATOME GMBH
    Inventors: Beatrice Schuster, Wolfgang Schmid
  • Patent number: 10670746
    Abstract: A sample container, sampling system and operating methods permit representative sampling from a liquid phase or boiling liquid, a gaseous phase, a containment sump, containment atmosphere, or condensation chamber of a nuclear power plant following a severe accident. A sample container obtaining an environmental sample includes an outer chamber surrounded by an outer container wall, being directly fluidically connected to the environment through a passage opening in the outer container wall and being fillable with a liquid at least in a base region. An inner chamber surrounded by an inner container wall is fluidically connected to the base region through a passage opening in the inner container wall, has connections for sampling and conveyor medium lines and is otherwise pressure and media tightly sealed from the environment. A pneumatically or hydraulically actuatable closure device for the passage opening between the outer and inner chambers has an actuation medium line connection.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: June 2, 2020
    Assignee: Framatome GmbH
    Inventor: Axel Hill
  • Publication number: 20200132613
    Abstract: A method for a multielement analysis via neutron activation. The method includes generating fast neutrons with an energy in the range of 10 keV to 20 MeV and moderating the neutrons, irradiating the sample with the neutrons, and measuring the gamma radiation emitted by the irradiated sample using a detector to determine at least one element of the sample. The sample continuously irradiated in a non-pulsed fashion. The measurement is implemented during the irradiation. The determination of the at least one element includes an evaluation of the measured gamma radiation. The sample is subdivided into individual partitions and the measurement is implemented using a collimator. The evaluation includes a spatially resolved and energy-resolved determination of the neutron flux within the respective partition of the sample and calculation of energy-dependent photopeak efficiencies and neutron flux and neutron spectrum within a single partition of the sample by an approximation method.
    Type: Application
    Filed: May 28, 2018
    Publication date: April 30, 2020
    Applicants: AACHEN INSTITUTE FOR NUCLEAR TRAINING GMBH, FRAMATOME GMBH
    Inventors: KAI KRYCKI, JOHN KETTLER, ANDREAS HAVENITH
  • Patent number: 10566099
    Abstract: The disclosure relates to a device for checking a fuel rod comprising a testing container having first and second chambers, a first checking device arranged in the testing container, wherein the testing container has at least one inlet opening, at least one outlet opening, and an insertion opening for inserting the fuel rod into the second chamber, and wherein a valve is arranged in a connecting channel connecting the first and the second chamber. A method is disclosed for checking a fuel rod in a water-filled basin of a submerged nuclear plant having such a device, wherein the fuel rod is inserted into the second chamber of the testing container through the insertion opening while the valve is closed, wherein a fluid is fed in via the at least one inlet opening, and wherein the valve is opened in order to check the fuel rod with the first checking device.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: February 18, 2020
    Assignee: Framatome GmbH
    Inventor: Wolfgang Hummel
  • Patent number: 10559391
    Abstract: An irradiation target processing system for insertion and retrieving irradiation targets into and from an instrumentation tube in a nuclear reactor core comprises, a target retrieving system, target insertion system and transport gas supply system, mounted on a movable support, wherein: the target retrieving system comprises a target exit port coupled to a target storage container and exhaust system; the target insertion system comprises a target filling device, target retention tubing with target supply junction connectable to the instrumentation tube, and a target diverter coupled to the target filling device, target retention tubing and target retrieving system; and the transport gas supply system comprises a first gas supply tubing coupled to the exit port of the target retrieving system, a second gas supply tubing coupled to a junction for supplying gas to the instrumentation tube, and a transport gas supply junction coupled to the first and second gas supply tubing.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: February 11, 2020
    Assignee: FRAMATOME GMBH
    Inventors: Thomas Fabian Richter, Alexander Sykora, Wilfried Kannwischer, Leila Jaafar
  • Patent number: 10438706
    Abstract: A pressure-relief system for a containment of a nuclear plant has a pressure-relief line which is led through the containment and is closed by a shutoff device, and a wet scrubber being switched into the pressure-relief line lying outside the containment, for the pressure-relief gas flow developing in the pressure-relief operating mode with the shutoff device being open. An effective, reliable operation of the wet scrubber with a compact structural configuration is made possible. This is achieved by a reservoir, arranged in the containment or fluidically connected therewith such that an overpressure, as compared with the outer environment, present in the containment, is transferred to the reservoir, and a feeding line which is led from the reservoir to the wet scrubber and can be closed by a shutoff device, for feeding a liquid active as a scrubbing liquid from the reservoir to the wet scrubber.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: October 8, 2019
    Assignee: Framatome GmbH
    Inventors: Bernd Eckardt, Norbert Losch, Frank Zehe
  • Patent number: 10424417
    Abstract: Irradiation targets, useful in preparing radioisotopes by exposure of the target to a neutron flux in instrumentation tubes of a nuclear power reactor, are prepared by a method comprising the steps of: providing a powder of an oxide of a rare earth metal having a purity of greater than 99%; consolidating the powder in a mold to form a round green body having a green density of at least 50 percent of the theoretical density; and sintering the spherical green body in solid phase at a temperature of at least 70 percent of a solidus temperature of the rare earth metal oxide powder to form a round sintered rare earth metal oxide target having a sintered density of at least 80 percent of the theoretical density.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: September 24, 2019
    Assignee: FRAMATOME GMBH
    Inventors: Beatrice Schuster, Robert Bathelt, Karl Goesswein
  • Patent number: 10352053
    Abstract: A device for repairing damage to a bottom of a container filled with water is disclosed. The device comprises a guiding device, which can be placed on the bottom of the container and which has a centering device for centering the guiding device between wall sections of the bottom elements. The devices further comprises a fixing device for fixing the guiding device on the bottom of the container, a carrier, which can be guided along the guiding device and on which at least one pivot arm is arranged, and an accommodating element arranged at a free end of the pivot arm, for accommodating adhesive, with which part of a wall section of the bottom elements can be covered.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: July 16, 2019
    Assignee: FRAMATOME GMBH
    Inventors: Georg Krämer, Konrad Meier-Hynek
  • Patent number: 10345189
    Abstract: The invention relates to a device for performing a leak test on a fuel rod capsule, which contains at least one fuel rod and test gas, which device comprises a test container, which is designed to accommodate at least one fuel rod capsule and can be lowered into a pool of a nuclear plant flooded with water. According to the invention, a mass spectrometer is fluidically connected to the interior of the test container in such a way that a gas flow can be fed to the mass spectrometer in order to sense the concentration of the test gas that has diffused into the test container from the fuel rod capsule.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: July 9, 2019
    Assignee: FRAMATOME GMBH
    Inventor: Wolfgang Hummel
  • Patent number: 10340050
    Abstract: A method of decontaminating metal surfaces in a cooling system of a nuclear reactor comprises: an oxidation step, comprising at least one acidic oxidation step and at least one alkaline oxidation step wherein metal oxides and radioisotopes on the metal surfaces are contacted with aqueous permanganate oxidant solutions; followed by a decontamination step wherein an aqueous solution comprising oxalic acid, formic acid, citric acid, tartaric acid, picolinic acid, gluconic acid glyoxylic acid or mixtures thereof is used to dissolve at least part of the metal oxides and radioisotopes; and a cleaning step wherein radioisotopes are immobilized on an ion exchange resin; wherein at least one treatment cycle includes a high temperature oxidation step, wherein the permanganate oxidant solution is kept at a temperature of at least 100° C.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: July 2, 2019
    Assignee: FRAMATOME GMBH
    Inventors: Luis Sempere-Belda, Christian Guenther Topf
  • Patent number: 10332645
    Abstract: A method for encapsulating a fuel rod or a fuel rod section in a container includes inserting the fuel rod or fuel rod section into the container. One of the ends of the container is connected to a purging-gas line. The container is dehydrated and purged by use of a purging gas. The ends of the container are connected to a bypass line in such a way that a closed gas circuit is produced and a hot gas is circulated in the gas circuit until the absolute moisture content reaches an end value at which the absolute moisture content no longer rises. The container is disconnected from the gas circuit and subsequently the container is closed in a fluid-tight manner at both ends.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: June 25, 2019
    Assignee: Framatome GmbH
    Inventors: Wolfgang Hummel, Egon Neubauer, Werner Hoefers, Klaus Kurzer
  • Patent number: 10315234
    Abstract: A method for conditioning the circulatory system (1) of a power plant is especially suited for a nuclear power plant. An amine, which is a film-forming agent, is metered into the working medium circulating in the circulatory system. The film-forming agent forms a hydrophobic film on the surfaces of the circulatory system. During the process, the concentration of the film-forming agent is monitored in at least one measuring point by way of measurement, and metering of the film-forming agent is stopped once its concentration in the working medium has reached a value of 1 ppm to 2 ppm in at least one measuring point M1.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: June 11, 2019
    Assignee: Framatome GmbH
    Inventors: Ute Ramminger, Joerg Fandrich, Fernando-Mario Roumiguiere
  • Patent number: 10304573
    Abstract: A method and a corresponding device for the pressure relief of a nuclear power plant having an outlet for a relief flow. The relief flow is guided out of a containment into the atmosphere via a relief line provided with a filter system. The filter system has a filter chamber with a filter-chamber inlet and outlet and a sorbent filter arranged therebetween. The relief flow is guided in a high-pressure section of the relief line past the filter chamber, with the latter being heated, and the relief flow is expanded at the end of the high-pressure section and dried. In order for efficient retention of iodine-containing organic compounds, the relief flow is guided through a bed filter, guided in a superheating section past the high-pressure section of the relief line and in the process is heated, guided in this state directly thereafter through the filter chamber having the sorbent filter.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: May 28, 2019
    Assignee: Framatome GmbH
    Inventors: Bernd Eckardt, Norbert Losch, Carsten Pasler