Patents
Patents for G21C 7 - Control of nuclear reaction (2,764)
04/1989
04/18/1989CA1252919A1 Actuating device for linearly moving a cluster of control elements in a nuclear reactor
04/11/1989US4820478 Nuclear reactor control rod with uniformly changeable axial worth
04/11/1989US4820475 Burnable absorber rod push out attachment joint
04/11/1989US4820058 Control rod end plug with a stabilizing configuration
04/05/1989EP0309925A2 Method for reducing wear on the control rods of a nuclear reactor control element and apparatus for carrying out the method.
04/04/1989CA1252231A1 Device and method for retaining a linearly movable element in a nuclear reactor
04/04/1989CA1252230A1 Device for displacing and latching a cluster of control elements in a nuclear reactor
03/1989
03/28/1989US4816212 Graphite side reflector
03/28/1989US4816206 Nuclear reactor control bar drive device
03/21/1989US4815014 Machine assisted execution of process operating procedures
03/21/1989CA1251580A1 Apparatus and method for closed loop control of reactor power
03/08/1989EP0305719A2 Centrifugal brake for control rod drive
03/02/1989DE3727529A1 Swimming-pool nuclear reactor
03/01/1989EP0305159A2 Rod cluster spider having improved vane configuration
01/1989
01/31/1989US4801422 Apparatus for installing and removing a control rod drive in a nuclear reactor
01/25/1989EP0300745A2 Reactivity control method of light-water cooled, lightwater moderated nuclear reactor core and apparatus therefor
01/17/1989US4798700 Ceramic installations
01/17/1989US4798699 Wear sleeve for a control rod end plug
01/17/1989CA1249079A1 Installation comprising a nuclear reactor
12/1988
12/28/1988EP0296954A1 Modular neutron absorber element and modular capsule for such an element
12/28/1988CA1247758A Control rod driveline and grapple
12/27/1988US4793965 Simplified, flexible top end support for cantilever-mounted rod guides of a pressurized water reactor
12/15/1988DE3817486A1 Control rod for a nuclear reactor
12/07/1988EP0153240B1 Submoderated nuclear reactor
11/1988
11/29/1988US4788027 Die and cylinder punch mechanism
11/08/1988US4783307 Reactor control system verification
11/02/1988EP0288745A2 Sealing device
11/01/1988US4781881 Power levels altered by adjusting rate of change of reactivity; computers
10/1988
10/26/1988EP0288381A1 Nuclear reactor control procedure
10/25/1988US4780268 Neutron absorber articles
10/19/1988CN88102423A Method of and apparatus for controlling output power of nuclear reactor
10/18/1988US4778645 Pressurized water reactor having disconnectable two-piece drive rod assemblies, and related methods of assembly and maintenance operations
10/11/1988US4777012 Enclosing the metal removal tubes with graphite and boron
10/11/1988US4777010 Rod drive control system for nuclear reactors
10/06/1988DE3810202A1 Core of a light water reactor
10/05/1988EP0285380A2 Control rod
10/05/1988EP0285258A2 Reactivity control in nuclear reactors
10/04/1988US4775506 Nuclear reactor having control clusters with hydraulic actuation
09/1988
09/28/1988EP0284016A2 Fuel assembly
09/21/1988EP0282600A1 Fuel assembly and reactor
09/21/1988CN88101263A Power control method and apparaturs for natural circulating reactors
09/20/1988US4772448 Crimpable cylinder integrally connected to an internally threaded section; sidewalls; nuclear reactors
09/14/1988EP0281805A1 Method of detecting a rod breakdown in a nuclear reactor, and power plant with protection against such a breakdown
09/13/1988US4770846 Replacement support pin for guide tubes in operating plants
09/13/1988US4770845 Self-actuating reactor shutdown system
09/13/1988US4770843 Controlling fuel assembly stability in a boiling water reactor
09/13/1988US4770840 Fuel assemblies having same configuration may contain fertile or depleted fuels
09/07/1988WO1988006796A1 Reactor control system verification
09/07/1988CN88100686A Method of measurement of reaction component falling into reactor in nuclear power plant
08/1988
08/31/1988EP0280553A2 Computer assisted execution of process operating procedures
08/30/1988US4767595 Repositioned fuel assembly
08/17/1988EP0278799A1 Reactor core and fuelling process for this core
08/16/1988US4764339 High flux reactor
08/10/1988EP0277594A1 Method of determining the alarm level of the critical heat-up and device for carrying it out.
08/10/1988CN88101339A Method of determining the alarm threshold of over-heating ratio, device for implementing the method, and method of controlling nuclear reactor
08/09/1988US4762673 Burnable poison rod for use in a nuclear reactor
08/09/1988US4762672 Fast breeder reactor
08/09/1988US4762670 Cleaning apparatus for atomic reactor control rod driving means (CRD)
08/09/1988US4762662 Thermally activated trigger device
08/09/1988US4762661 Upper end piece for nuclear fuel assemblies
08/09/1988US4762266 Method for performing remotely-manipulated work on a conduit of a nuclear facility
08/03/1988EP0276361A1 Installation with a nuclear reactor, especially a heating reactor
07/1988
07/28/1988WO1988005595A1 Plant with nuclear reactor, in particular a thermal reactor
07/26/1988US4759904 Pressurized water reactor having improved calandria assembly
07/13/1988EP0274311A1 Shock absorber for the control rods of a nuclear fuel assembly
07/12/1988US4756868 Electromagnetically controlled means placed outside enclosure, hydraulic means controlled by the controller for reducing pressure of the coolant
07/12/1988US4756067 Manual replacement of old split-pin assemblies by new split-pin assemblies
07/05/1988US4755346 Device for displacing and latching a cluster of control elements in a nuclear reactor
06/1988
06/28/1988US4753769 Device and method for retaining a linearly movable element in a nuclear reactor
06/21/1988US4752440 Absorber plates with channels, material which gives off gas and swells on irradiation
06/21/1988US4752438 Cluster guide with centering and antivibratory positioning device for nuclear reactors
06/21/1988US4752434 Vertical movement, positioning
06/21/1988US4752433 For selective positioning of water dispacer rods
06/16/1988DE3641504A1 Low-output nuclear reactor located in the cavern of a pressure vessel
06/14/1988US4751042 Removable control rod drive shaft guide
06/14/1988US4751041 Sealed zirconium alloy tube containing zirconium hydride and boron compound
06/07/1988US4748733 Removal of old split-pin assemblies from guide tubes and replacement by new split-pin assemblies
06/01/1988EP0268899A2 Pressurized water nuclear reactor
06/01/1988EP0268863A1 Control and shut-down device with subdivided travel for a nuclear reactor
05/1988
05/31/1988US4747994 For switchgear mechanisms in pressurized light water reactor
05/17/1988US4744922 Neutron-absorbing material and method of making same
05/11/1988EP0266593A2 Frictionally loaded top end supports for cantilever-mounted rod guides of a pressurized water reactor
05/11/1988EP0266592A2 Simplified, flexible top end support for cantilever-mounted rod guides of a pressurized water reactor
05/11/1988EP0266591A2 Resiliently loaded lateral supports for cantilever-mounted rod guides of a pressurized water reactor
04/1988
04/19/1988US4738023 Hooking apparatus for a removable constriction plug
04/06/1988CN87104769A Hydraulischer steuerstabantrieb fur wassergekuhlte kernreaktoren insbesondere heizreaktoren
04/05/1988US4735767 Method and device for reducing the activity of a gas-cooled stacked-ball nuclear reactor
03/1988
03/29/1988US4734252 Nuclear reactor shutdown control rod assembly
03/29/1988US4734249 Boiling water type in cold shut-down state
03/24/1988WO1988002176A1 Fuel assembly and reactor
03/24/1988DE3632503A1 Core structure for nuclear reactors with hexagonal fuel-element grid of round piping
03/24/1988DE3631020A1 Drive device
03/24/1988DE3631018A1 Method and device for shutting down and moderating nuclear reactors with a side reflector
03/24/1988DE3631017A1 Drive device
03/17/1988DE3630853A1 Nuclear reactor, in particular nuclear boiling-water heating reactor, with a liquid poison system for injecting a neutron-absorbing liquid
03/08/1988US4729868 Vibration arrestor for rod guide support structure of the inner barrel assembly of a pressurized water reactor
03/01/1988US4728488 Chromium carbide, nuclear reactors
03/01/1988US4728487 Standardized reduced length burnable absorber rods for a nuclear reactor
03/01/1988US4728480 Apparatus and method for refurbishing a spectral shift mechanism for a nuclear reactor fuel assembly
02/1988
02/24/1988EP0256934A1 Absorber rod comprising integrated shock absorber device
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