Charging Or Discharging Means Adapted For Use In A Radioactive Environment Patents (Class 414/146)
  • Patent number: 10677169
    Abstract: The present disclosure relates to a geared turbofan engine.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: June 9, 2020
    Assignee: ROLLS-ROYCE plc
    Inventor: Clive Breen
  • Patent number: 10544678
    Abstract: A gas turbine engine rotor disk includes a web that extends inward in a radial direction from a rim to a bore that circumscribes an axis. An annular ridge extends axially from the side of the web. A balancing cut is in the annular ridge that includes a fillet that extends in the radial direction.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: January 28, 2020
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Michael Espinoza
  • Patent number: 10434645
    Abstract: The embodiments relate to a method for operating a medical robotic device with an end effector for performing a diagnostic and/or therapeutic measure, involving predetermining at least one position to be reached by the end effector, evaluating at least two movement sequences of the medical robotic device, by which the end effector reaches the respectively predetermined at least one position, using an optimization criterion to select the movement sequence with the best evaluation result as the optimum movement sequence and implementing the optimum movement sequence, so that the respective predetermined position is reached by the end effector, in order to improve the reaching of the predetermined position.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: October 8, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Philip Mewes
  • Patent number: 10062461
    Abstract: Provided is a device for transferring spent fuel between spent fuel storage pools. The device includes a transfer container extending in a direction, disposed in a vertical direction, and containing spent fuel therein; a guide frame configured to guide the transfer container while maintaining a vertical orientation of the transfer container; and a transfer unit configured to transfer the transfer container along the guide frame.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: August 28, 2018
    Assignee: KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.
    Inventors: Kwang Jeok Ko, Ho Jung Lee, Il Seon Hwang, Min Gyu Kim, Sang Gyoon Chang
  • Patent number: 9624775
    Abstract: A method of reducing dynamic imbalance in a bladed rotor assembly by axially adjusting one or more of the blades so as to redistribute mass along the geometric axis of the assembly. The blades may be axially adjusted to form a counterbalancing couple. Additional correction masses may be added for supplemental correction of couple imbalance or residual static imbalance in the bladed rotor assembly. The invention offers a reduction in the weight penalty associated with conventional balancing corrections carried out on the bladed rotor assembly.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: April 18, 2017
    Assignee: ROLLS-ROYCE plc
    Inventor: Andrew Iain James Rix
  • Patent number: 9595358
    Abstract: The invention relates to a long-term storage device (1) intended to receive a containment case (3) containing radioactive materials, where this device includes a main body (2) having an inner surface delimiting a housing (7). According to the invention, in an unloaded configuration, in which the containment case containing radioactive materials is absent from the storage device, the latter includes a storage case (9) delimiting a cavity (4) to receive the containment case, where the storage device also includes ventilation means allowing air to circulate between the exterior of the storage device and a space delimited between the inner surface of the main body and the storage case (9).
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: March 14, 2017
    Assignee: TN INTERNATIONAL
    Inventors: Justo Garcia, Pascal Prud'homme, Dai Yokoe
  • Patent number: 9127556
    Abstract: A rotor disc, such as one made of a damage intolerant material or other material sensitive to stress concentrations, has at least one balancing assembly which includes a plurality of circumferentially spaced-apart sacrificial protrusions projecting between adjacent stress-relieving slots. Selective material removal is permitted from the rotor disc, while managing stress concentrations in the rotor disc created by such material removal, such that the rotor disc may be balanced without detrimentally affecting its service life.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: September 8, 2015
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Christian Pronovost, Joseph Daniel Lecuyer
  • Publication number: 20140369790
    Abstract: Device for handling objects in a glove box comprising a carriage (2) to support the objects to be handled, a base (6) relative to which the carriage (2) can be moved along a horizontal axis (X), means of driving the carriage (2) along the first axis (X), these drive means comprising an electric motor (14) arranged such that its drive shaft is orthogonal to the axis (X) and projects opposite the base (6), a transmission shaft (18) parallel to the motor (14), a rack (22) fixed to the base (6) along the axis (X) and a pinion (24) directly fixed in rotation to the transmission shaft (18) and engaging with the rack (22), a transmission belt (20) mechanically connecting the drive shaft of the motor (14) to the transmission shaft (18), the electric motor (14) being declutchable and the carriage possibly being moved manually along the axis (X).
    Type: Application
    Filed: December 21, 2012
    Publication date: December 18, 2014
    Inventors: Patrice Duval, Jean-Jacques Marchal, Luc Collette
  • Patent number: 8824618
    Abstract: Disclosed is an unlatching tool that may be used to unlatch a control rod from a control drive. The unlatching tool may include a baseplate, a first guide member and a second guide member attached to the baseplate, a first frame and a second frame attached to the baseplate, a stepper motor attached to the first frame, a worm drive attached to the first frame, a cable reel shaft attached to the first and second frame, a hose wrapped around the cable reel shaft, and a hook attached to a first end of the hose. The hook may include a cylindrical sleeve having a at least one finger configured to fold and unfold. Disclosed also is a method of unlatching a control rod from a control drive.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: September 2, 2014
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Jack Matsumoto, Robert W. Whitling, Christopher M. Welsh, Gregory A. Francisco
  • Patent number: 8792605
    Abstract: Disclosed is an unlatching tool that may be used to unlatch a control rod from a control drive. The unlatching tool may include a baseplate, a first guide member and a second guide member attached to the baseplate, a first frame and a second frame attached to the baseplate, a stepper motor attached to the first frame, a worm drive attached to the first frame, a cable reel shaft attached to the first and second frame, a hose wrapped around the cable reel shaft, and a hook attached to a first end of the hose. The hook may include a cylindrical sleeve having a at least one finger configured to fold and unfold. Disclosed also is a method of unlatching a control rod from a control drive.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: July 29, 2014
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Jack Matsumoto, Robert W. Whitling, Christopher M. Welsh, Gregory A. Francisco
  • Publication number: 20140186144
    Abstract: An apparatus system and method for handling and translating high level radioactive waste. The apparatus comprises a body for supporting the cask close to the ground so that the cask and the apparatus can pass underneath over head doors. The apparatus further comprises rollers for translating the cask. The apparatus additionally supports the storage cask during spent nuclear fuel transfer procedures.
    Type: Application
    Filed: December 31, 2012
    Publication date: July 3, 2014
    Inventor: Krishna P. Singh
  • Publication number: 20140072389
    Abstract: An apparatus for automatically loading a fuel pellet for manufacturing a nuclear fuel rod includes a tray transfer unit that horizontally transfers a tray; a fuel pellet alignment unit that aligns fuel pellets arranged in the tray; a measurement unit that measures an entire length of the fuel pellets arranged in a row on the tray; a controller that compares an accumulated measured length with a set length; and a waiting table located adjacent to the tray transfer unit to store a redundancy fuel pellet; and a fuel pellet movement unit configured to be driven by the controller and configured to move the fuel pellet between a tray of which length measurement is completed by the measurement unit and the waiting table to increase or decrease the fuel pellet arranged on the tray.
    Type: Application
    Filed: January 3, 2013
    Publication date: March 13, 2014
    Applicant: KEPCO NUCLEAR FUEL CO., LTD.
    Inventors: Se Yong SHIN, Chang Hwan HWANG, Hung Soon CHANG, Tae Hyung NA, Bong Sik MOON, Young Seok YOON
  • Patent number: 8657549
    Abstract: A long-term storage facility has an array of storage packages receiving respective cases containing radioactive materials. Each storage package has a lateral body delimiting a housing for receiving a case, the package body being closed at its top end and at its low end respectively by a removable head cover, and by a package base. The package base has a removable base cover, allowing insertion of the case via the low end of the body. The packages can be moved inside the facility by a mechanical lift. The facility includes a pivoting frame for swinging a storage package from a horizontal orientation in which the storage package is loaded to a vertical position in which the storage package is stored.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: February 25, 2014
    Assignees: Transnuclear, Inc., TN International
    Inventors: Robert L. Grubb, Jayant R. Bondre, Lise Wattez
  • Patent number: 8599988
    Abstract: A telescoping rod control cluster assembly change tool for moving control rod assemblies among fuel assemblies in a nuclear facility. The operation of the tool is completely mechanical and the telescoping feature enables the tool to have a relatively low profile when it is being moved and stored without housing a control rod assembly. Rigidly supported alignment cards guide a gripper that attaches to the control rod assembly as the control rod assembly is withdrawn into the tool with the alignment cards preventing any lateral or rotational movement of the gripper.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: December 3, 2013
    Assignee: Westinghouse Electric Company LLC
    Inventors: David J. Stefko, Jason A. Hartle, Craig Deah
  • Patent number: 8526565
    Abstract: A fuel transfer system is used for transporting spent fuel from a first room to a second room. The system includes a carriage configured for travel between the first room and the second room, and a boom assembly that extends and retracts between the first room and the second room, wherein the boom assembly facilitates travel of the carriage. The system also includes a hoist system positioned in the first room. The hoist system includes at least one boom cable interconnected with the boom assembly to extend and retract the boom assembly. The hoist system also includes at least one carriage cable interconnected with the carriage to move the carriage.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: September 3, 2013
    Assignee: MHE Technologies, Inc.
    Inventor: Steven K. Waisanen
  • Publication number: 20130202385
    Abstract: An apparatus configured to receive material from a first isotope enrichment module and feed the received material into a second isotope enrichment module and a first storage region of a material storage apparatus; and receive material from the second isotope enrichment module and feed the received material into a second storage region of the material storage apparatus. A corresponding method is also described and an apparatus and corresponding method for controlling feed rates of material into the storage apparatus are also described.
    Type: Application
    Filed: February 1, 2013
    Publication date: August 8, 2013
    Applicant: URENCO Limited
    Inventor: URENCO Limited
  • Publication number: 20120183375
    Abstract: A method of transferring radioactive material from a contaminated area to a container assembly generally includes acquiring radioactive material in a contaminated area, wherein the contaminated area includes at least one shielding wall, and moving the material in the substantially horizontal orientation through an aperture in a shielding wall into a container assembly. Other systems, methods, and components for transferring radioactive material are provided.
    Type: Application
    Filed: November 18, 2011
    Publication date: July 19, 2012
    Applicant: TRANSNUCLEAR, INC.
    Inventors: William Bracey, Jayant R. Bondre, Aleksandr Kofman, Robert L. Grubb
  • Publication number: 20110044788
    Abstract: The present invention provides a system and method for a system for accommodating a solid target in an accelerator. The system and method includes a target changer having at least one port for accommodating the solid target, an insert for receiving the solid target in the target changer, a piston for providing a vacuum and a cooling system for the solid target, a cylinder for displacing the piston in one of three positions; and a bracket for securing the insert, piston and cylinder to the target changer.
    Type: Application
    Filed: October 5, 2010
    Publication date: February 24, 2011
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventor: Andrew C. Williamson
  • Patent number: 7861882
    Abstract: The invention relates to a device for the sealed docking (14) of mobile containers (42) equipped with plugs (44) of various diameters on a containment box (10). The device includes a center disk (22) and at least one docking flange (20a, 20b, 20c) that are concentric to each other, normally plugging the access opening (18) of the containment box. A locking/unlocking mechanism (24) makes it possible to only unlock the center disk (22) alone or the center disk and one or more of the docking flanges (20a, 20b, 20c), according to the diameter of the plug (44). This arrangement makes it possible, in particular, to clean the plug (44) of a mobile container (42) serving to transport contaminated nuclear equipment.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: January 4, 2011
    Assignee: Compagnie Generale des Matieres Nucleaires
    Inventors: Luc Tumolo, Pascal Le Chevalier
  • Publication number: 20100254785
    Abstract: An overall to long-term storage package intended to receive a case containing radioactive materials, the package comprising a lateral body delimiting a housing for receiving the case, the package body being closed at its top end and at its low end respectively by a removable head cover, and by a package base. According to the invention, the package base takes the form of a removable base cover, allowing insertion of the case via the low end of the body. The invention also relates to a process for transfer of such a case.
    Type: Application
    Filed: July 8, 2008
    Publication date: October 7, 2010
    Applicants: TRANSNUCLEAR, INC., TN INTERNATIONAL
    Inventors: Robert L. Grubb, Jayant R. Bondre, Lise Wattez
  • Patent number: 7771156
    Abstract: A method for delivering a plurality of reactor monoliths into an interior of a reactor includes providing at least one tubular member having an outer wall defining an interior space adapted to allow sliding movement of reactor monolith therethrough, and providing a plurality of engagement members located within the interior space of the at least one tubular member and spaced along a length thereof, wherein each engagement member is actuable between an extended position and a retracted position. The at least one tubular member is extended into an interior of a reactor such that a first end of the at least one tubular member is located near an opening in the reactor, and a second end of the at least one tubular member is insert into the interior of the reactor.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: August 10, 2010
    Assignee: Corning Incorporated
    Inventors: Gilbert Deangelis, Jerome T Firlik, Michael G Shultz
  • Publication number: 20090123255
    Abstract: A transfer system for spent fuel canisters includes a carrier, a shielded bell trolley movable along the carrier and carrying a shielded bell, and a canister trolley movable along the carrier and carrying a lifting mechanism for raising and lowering the spent fuel canister into and out of the shielded bell. The canister trolley can move along the carrier independent of the shielded bell trolley and the shielded bell trolley can move along the carrier independent of the canister trolley. The shielded bell trolley and the canister trolley can be selectively interlocked for selected transfer operations.
    Type: Application
    Filed: October 24, 2008
    Publication date: May 14, 2009
    Inventor: Steven K. Waisanen
  • Publication number: 20090003975
    Abstract: A robotic treatment delivery system including a linear accelerator (LINAC), and a robotic arm coupled to the LINAC. The robotic arm is configured to move the LINAC along at least four rotational degrees of freedom and one substantially linear degree of freedom.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Inventors: Gopinath R. Kuduvalli, Sohail Sayeh
  • Patent number: 7139358
    Abstract: A system and method for transferring a canister of spent nuclear fuel from a transfer cask to a receiving cask. In one aspect, the system comprises a below grade opening adapted for receiving a cask; a platform positioned within the opening, the platform capable of vertical movement; and at least two jacks for vertically moving the platform; wherein the platform is capable of lowering the cask within the opening. In another aspect, the invention is a method of transferring a canister of spent nuclear fuel to a cask comprising the steps of: lowering a receiving cask having a height into a below grade opening so that a portion of the receiving cask's height is below grade level; and transferring the canister to the receiving cask.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: November 21, 2006
    Assignee: Holtec International, Inc.
    Inventors: Krishna P. Singh, Stephen J. Agace
  • Patent number: 6793450
    Abstract: A system and method for transferring a canister of spent nuclear fuel from a transfer cask to a receiving cask. In one aspect, the system comprises a below grade opening adapted for receiving a cask; a platform positioned within the opening, the platform capable of vertical movement; and at least two jacks for vertically moving the platform; wherein the platform is capable of lowering the cask within the opening.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: September 21, 2004
    Assignee: Holtec International, Inc.
    Inventors: Krishna P. Singh, Stephen J. Agace
  • Patent number: 6788755
    Abstract: A system and method for moving a canister of spent nuclear fuel from a first location, which may be within a nuclear power generation facility to a second location such as a storage cask that is used for short-term or long-term storage of spent nuclear fuel includes a first lifting mechanism for engaging a transfer cask and a second lifting mechanism for engaging and lifting the canister of spent nuclear fuel. Preferably, the method is practiced by first positioning a canister of spent nuclear fuel within the transfer cask and then engaging the transfer cask with the first lifting mechanism. The canister is engaged with the second lifting mechanism. The transfer cask having the canister positioned within is moved to the vicinity of a storage cask, and the canister is lowered from the transfer cask into the storage cask by the second lifting mechanism without disengagement of the first lifting mechanism from the transfer cask.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: September 7, 2004
    Assignee: American Crane & Equipment Corporation
    Inventors: David P. Weber, Oddvar Norheim
  • Patent number: 6773219
    Abstract: A positioning apparatus for a CRD handling assembly for a nuclear reactor. The positioning apparatus includes at least one linear slide rail, a drive screw coupled to the at least one slide rail, an elevator movably coupled to the drive screw, and at least one linear bearing attached to the elevator. The linear bearing is slidably coupled to the at least one slide rail.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: August 10, 2004
    Assignee: General Electric Company
    Inventor: James E. Burner
  • Patent number: 6723037
    Abstract: A protective tool for a therapeutic material delivery device prevents wrong sticking of the outer needle of the device after use and prevents dissipation of blood adhering to the outer needle and comprises a cover (8′A) and a cap (61) or stopper (65) attached to a forward end of said cover for protecting the forward end of the outer tubular needle (2A), wherein said cover (8′A) is formed of a plurality of tubes (8′A1, 8′A2, 8′A3, . . .
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: April 20, 2004
    Assignee: Kawasumi Laboratories, Inc.
    Inventors: Kuniharu Hamazaki, Tetsuya Otsuka
  • Patent number: 6674828
    Abstract: A system and method for moving a canister of spent nuclear fuel from a first location, which may be within a nuclear power generation facility to a second location such as a storage cask that is used for short-term or long-term storage of spent nuclear fuel includes a first lifting mechanism for engaging a transfer cask and a second lifting mechanism for engaging and lifting the canister of spent nuclear fuel. Preferably, the method is practiced by first positioning a canister of spent nuclear fuel within the transfer cask and then engaging the transfer cask with the first lifting mechanism. The canister is engaged with the second lifting mechanism. The transfer cask having the canister positioned within is moved to the vicinity of a storage cask, and the canister is lowered from the transfer cask into the storage cask by the second lifting mechanism without disengagement of the first lifting mechanism from the transfer cask.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: January 6, 2004
    Inventors: David P. Weber, Oddvar Norheim
  • Patent number: 6639961
    Abstract: An automated machine for loading nuclear reactor fuel, BP, or APSR pellets from small trays having rows of pellets into reactor rods of long length wherein the pellets are individually counted and loaded into rows of a loading tray according to the desired number of pellets per row and total number of pellets per tray with the loading tray controls being moved to a que tray where they may be weighted and there from to an unloading tray for sequential row loading into the reactor rod.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: October 28, 2003
    Assignee: Framatome Cogema Fuel Co.
    Inventors: William E. Bailey, Dimick D. Heller, Steven D. Overby
  • Patent number: 6625248
    Abstract: A process for the treatment of radioactive graphite which includes the following steps: (i) reacting the radioactive graphite at a temperature in the range of from 250° C. to 900° C. with superheated steam or gases containing water vapor to form hydrogen and carbon monoxide; (ii) reacting the hydrogen and carbon monoxide from step (i) to form water and carbon dioxide; and (iii) reacting the carbon dioxide of step (ii) with metal oxides to for carbonate salts. The process enables radioactive graphite, such as graphite moderator, to be treated either in-situ or externally of a decommissioned nuclear reactor.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: September 23, 2003
    Assignee: Studsvik, Inc.
    Inventors: J. Bradley Mason, David Bradbury
  • Publication number: 20030118426
    Abstract: A positioning apparatus for a CRD handling assembly for a nuclear reactor. The positioning apparatus includes at least one linear slide rail, a drive screw coupled to the at least one slide rail, an elevator movably coupled to the drive screw, and at least one linear bearing attached to the elevator. The linear bearing is slidably coupled to the at least one slide rail.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 26, 2003
    Inventor: James E. Burner
  • Patent number: 6474923
    Abstract: This invention generally relates to the remote removal of pelletized samples from cylindrical containment capsules. V-blocks are used to receive the samples and provide guidance to push out rods. Stainless steel liners fit into the v-channels on the v-blocks which permits them to be remotely removed and replaced or cleaned to prevent cross contamination between capsules and samples. A capsule holder securely holds the capsule while allowing manual up/down and in/out movement to align each sample hole with the v-blocks. Both end sections contain identical v-blocks; one that guides the drive out screw and rods or manual push out rods and the other to receive the samples as they are driven out of the capsule.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: November 5, 2002
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: John L. Biernat
  • Patent number: 6459749
    Abstract: A fuel rod extracting machine which can extract the fuel rods one by one from a Korean type 17×17 Light Water Reactor fuel assembly comprises a multi-functional rotary head including a camera for measuring the positions of the fuel rods and securing nuts being fastened on the bottom end piece of fuel assembly, an impact wrench for unfastening the securing nuts, and a gripper for gripping and extracting the fuel rods one by one. All of these are installed on a single rotary disc, which is driven by a tool rotating motor, at intervals of 90 degrees. To improve the reliability and safety in using the multi-functional rotary head, a load cell and a remote compliance center are installed at the rear of the gripper. The load cell monitors a state of insertion of the fuel rod into a collet and measures a fuel rod extracting force. The remote compliance center provides the smooth insertion of the fuel rod onto the collet, even though there exists a small misalignment between them.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: October 1, 2002
    Assignees: Korea Atomic Energy Research Institution, Korea Electric Power Corporation
    Inventors: Myoung-Wui Cho, Ji-Sup Yoon
  • Patent number: 6354780
    Abstract: A blisk includes a disk having a rim from which extends a row of blades. The rim includes axially opposite overhangs one of which includes an arcuate balance land disposed eccentrically to the centerline axis of the disk for balancing the blisk.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: March 12, 2002
    Assignee: General Electric Company
    Inventors: Brian Michael Davis, Steven Mark Ballman, Albert Everett McDaniel, James Edward Gutknecht
  • Patent number: 6327320
    Abstract: An apparatus for succesively loading solid objects (19) into a tube (27), for instance, nuclear fuel pellets into a nuclear fuel tube, includes means (17) for feeding the objects towards one, open end (29) of the tube. A reduced pressure is induced between each solid object and the tube end prior to entry of the object into the tube.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: December 4, 2001
    Assignee: British Nuclear Fuels plc
    Inventor: David Clifford Hunter
  • Patent number: 5906574
    Abstract: A vacuum assisted handling and loading of radioactive seeds into implant needles from a lead glass shielded glass tube and with seeds manipulated within an enclosed visible radiation shield. Radioactive seeds and spacers are located on a loading platform within a shield having at least two transparent side walls for viewing into the interior of the shield. A vacuum pickup probe is inserted into the shield to manipulate the radioactive seeds and spacers to lift and drop the radioactive seeds and spacers into the funnel leading to a glass tube, behind a lead glass window. The manipulation of the vacuum pickup probe is performed from outside of the shield and vacuum force exerted through the pickup probe and the glass tube on the radioactive seeds or spacers.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: May 25, 1999
    Inventor: William C. Kan
  • Patent number: 5862195
    Abstract: A conveyance system provides for storing, monitoring, and retrieving (multi-purpose) canisters "MPC" for intermediate storage of spent fuel rods from nuclear power plants. The system includes a shielded transport system, an access corridor shielded for radiation, a lifting transport conveyance, an elevation chase, a dry-pool, seismic bracing to support the canisters in storage, associated shielding to confine radiation to the dry-pool, and air manifold system for cooling, and facilities to add alternative liquid radiation shielding around the canisters in the dry pool.A RR-locomotive moves a RR-car having a radiation shielded transport container to communicate with a dry-pool access corridor. A bridge crane carries an "MPC" through the corridor to a vertical chase which accesses to the dry-pool. The bridge crane places the "MPC" at a cooling vent manifold. A seismic brace engages the "MPC" secure to the dry-pool wall. A configuration of radiation shielding confines emissions.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: January 19, 1999
    Inventor: William Donald Peterson, II
  • Patent number: 5733088
    Abstract: The disclosure relates to packaging and storage containers suitable particularly for the packaging and storage, with optimum filling, of remote-handled hazardous waste; a process for filling the containers; and the implementation of the process for the packaging and storage of compacted nuclear waste. The containers are equipped inside, along one or more axial walls, over substantially the whole of their height h, with locking elements capable of undergoing elastic radial deformation on direct contact with the products introduced therein, the locking elements allowing the introduction and movement of products inside the containers only when force is applied to the products.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: March 31, 1998
    Assignee: Compagnie Generale des Matieres Nucleaires
    Inventors: Philippe Kerrien, Franck Tricot
  • Patent number: 5646969
    Abstract: A tool for protecting a boiling water reactor component against damage by a shroud repair assembly suspended from a cable and lowered into the downcomer annulus. The tool has a roller with an outer surface made of a material which will not scratch the surface of a tie rod of the shroud repair assembly as the latter is lowered relative to the roller. The tool has sets of opposing grippers made of aluminum alloy which are pressed against opposing surfaces of the shroud and the reactor pressure vessel with sufficient force to clamp the tool in the annulus. The pressing force is generated by air-actuated cylinders which are actuated remotely. In one embodiment, the roller is fixed and acts as a stop to limit tangential travel of the suspended assembly. In another embodiment, the roller is displaceable in a tangential direction in response to remote actuation of a pair of air-actuated positioning cylinders.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: July 8, 1997
    Assignee: General Electric Company
    Inventor: Grant Clark Jensen
  • Patent number: 5607353
    Abstract: In an airlock system, through which drums containing radioactive material are transferred into a containment area, a passage has an intermediate region, of reduced cross section relative to the inlet and outlet ends of the passage. The passage has a convergent inlet region and a divergent outlet region leading, respectively, to and from the intermediate region. The passage functions in the manner of a venturi so that an airstream is caused to flow along the passage towards the containment so as to inhibit the escape of atmosphere therefrom. A roller conveyor transfers the items through the airlock system and a detector monitors the atmosphere in the passage.
    Type: Grant
    Filed: August 19, 1994
    Date of Patent: March 4, 1997
    Assignee: British Nuclear Fuels plc
    Inventors: Adrian C. Hutchings, John Grimes, Kevin Shaw
  • Patent number: 5504343
    Abstract: A device for storing cylindrical objects, such as small containers (14) containing radioactive material samples, includes one or more superimposed rotary racks (30, 30'). Each of the racks has circumferentially distributed cavities (32, 32') in which the objects are received. The cavities are radially outwardly open with respect to the vertical rotation axis of the racks (30, 30'). Moreover, their axis is inclined so as to intersect the rotation axis above the cavity. Thus, an accidental escape of the objects is prevented.
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: April 2, 1996
    Assignee: Compagnie Generale Des Matieres Nucleaires
    Inventor: Joseph Besnier
  • Patent number: 5491737
    Abstract: According to the present invention, a material handling system for transporting a device to or from a radiation chamber in which the device is inspected is provided. The system includes a shuttle carriage having a base and two opposing walls, a conveyor mounted between the two opposing walls of the shuttle carriage, and means for moving the shuttle carriage along a path between a loading position and an unloading position. The system also includes a housing that encloses the shuttle carriage and the moving means. The housing has an internal cavity that is fitted to the two opposing walls. The housing also has a first opening coincident with the loading position and a second opening coincident with the unloading position. Further, a drive mechanism is provided for extending the conveyor partially through the first opening and the second opening.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: February 13, 1996
    Assignee: ThermoSpectra Corporation
    Inventors: Ransom A. Yarnall, J. Paul Axford, Dale D. Thayer
  • Patent number: 5482169
    Abstract: A lifting device makes it possible to manipulate loads within a tight enclosure with an operator remaining outside the enclosure. The device includes a main arm fitted so as to slide in an opening of a wall surrounding the enclosure, by way of a hose or sleeve. An articulated beam is mounted so as to pivot at the end of the main arm. This pivoting action can be controlled by two parallel rods mounted within the arm. The device is applicable to, for example, the handling of heavy loads within tight enclosures in the nuclear field.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: January 9, 1996
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Alain Simon, Bernard Dirollo
  • Patent number: 5448604
    Abstract: A transport, storage, monitoring, and retrieval system for casks including intermediate storage of spent fuel rods from nuclear power plants. The system consists of a powered rail transport car which carries a cask standing on its end. A cross-ways traveling powered rail "under car" unit carries the rail transport car and loaded cask transversely on rails underneath to align with a bay rail which the powered rail car traverses to the cask storage location. Bridge cranes off-load the casks and with monitoring equipment perform remote cask inspections. Bay rails and a pair of cross-ways traveling "under car" units serve for movement of both the transport car and the bridge units. Casks are located automatically at specific addresses for inventory control and data logging of radioactive emissions. The system may operate remotely and cask conditions are monitored from automated retrieved collected at an off-site data base.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: September 5, 1995
    Inventor: William D. Peterson, II
  • Patent number: 5347554
    Abstract: An improved tool for removing a highly contaminated outer filter from a control rod drive during a maintenance operation. The tool slides onto the control rod drive and surrounds the outer filter with a shield. The shield has a window for removing the screws used to mount the outer filter on the control rod drive. The tool has a support for the spud on the inside thereof. A U-shaped handle is slidably inserted into guideways so that it interlocks with circumferential slots in the shield. The arms of the inserted U-handle latch underneath the ring flange of the outer filter, whereby the outer filter is captured by the tool. The filter-mounting screws are then removed by unscrewing through the aligned window in the shield. Thereafter, the outer filter is removed from the CRD when the outer filter removal tool is lifted.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: September 13, 1994
    Assignee: General Electric Company
    Inventors: Thomas W. White, Edward J. Pulpan, Robert S. Tsukida, Edward W. Saxon, Frank Ortega
  • Patent number: 5342158
    Abstract: A radioactive source is mounted at one end of a rod and a ball-shaped coupler is disposed at the other end of the rod. An apparatus for handling a plurality of radioactive sources respectively mounted at one end of a plurality of rods having a ball-shaped coupler disposed at the other end of each said rod includes a shaft having a canister at one end of the shaft and a clip at another position on the shaft. The canister defines a plurality of compartments for respectively receiving a plurality of said mounted radioactive sources. The clip defines a plurality of chambers for respectively receiving a plurality of the ball-shaped couplers. The rods are flexible and semirigid and the distance between the canister and the clip is such in relation to the distance between the radioactive source and the ball-shaped coupler on the rod that the rods must be flexed after the radioactive sources are received in the compartments in order to insert the ball-shaped couplers into the chambers of the clip.
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: August 30, 1994
    Assignee: Gamma-Metrics
    Inventor: Chris A. Isaacson
  • Patent number: 5326211
    Abstract: An air lock system for the transfer of large containers into a containment comprises a set of horizontally and vertically slidable doors adapted to define a variable opening for the passage of containers. The set of doors cooperate with a further preceding set, which can be a single slidable door, to form an airlock. Ventilation means in the containment provide an inward air flow through the opening into the containment.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: July 5, 1994
    Assignee: British Nuclear Fuels plc
    Inventor: Richard J. Critchley
  • Patent number: 5324331
    Abstract: The invention pertains to a transport system for transporting containers or products within and along an essentially vertical tube with concurrent rotation of the containers on the axis of the tube. In order to facilitate simple construction despite conditions of limited space, it is proposed that the tube be designed as a vertical rotary tube, to which a rotatably retained worm sleeve is connected at the end of the transport path. Provided within the rotary tube are longitudinal guide grooves, in which dogs carried by the containers engage. These dogs also engage in the screw thread of the worm sleeve. On their upper and lower sides, the containers have couplings, e.g., an end toothing, which, during the transport of a group of adjoining containers, impart a rotary movement from container to container but also make possible a separation of one container from another in the direction of the axis of the tube.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: June 28, 1994
    Inventor: Florian Fischer
  • Patent number: 5297917
    Abstract: A method of remote control of a mobile carriage including at least one transmit and receive antenna for movement into an underground gallery connected to the surface by a shaft provided with an elevator for effecting deep storage of radioactive wastes. The method involves fitting the site with a plurality of waveguides from a control station which includes a signal generator and a signal receiver and being situated on the surface. The plurality of waveguides are disposed with at least one first waveguide at the surface extending from the control station to the entrance to the shaft. At least one second waveguide is disposed along the shaft and connected at its top end to the first waveguide. At least one third waveguide is disposed along the gallery and connected to the second waveguide in the vicinity of the entrance to the gallery.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: March 29, 1994
    Assignee: ACB
    Inventor: Gerard Freneix