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Match Document Document Title
US20120114090 GEROCS Control Rod Blade Unlatching Tool  
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...
US20140362967 Reactor Measurement-Pipe Maintenance Clamp Apparatus  
A reactor measurement-pipe maintenance clamp apparatus includes a first clamp mechanism and a second clamp mechanism. The first clamp mechanism includes clamps to fix the measurement pipe between...
US20110026662 Instrument Removal System  
An instrument removal system for removing detector cables from a nuclear reactor includes a removal cart and a disposal cask. in an exemplary embodiment, the removal cart includes a base including...
US20140328444 NUCLEAR FISSION REACTOR, A VENTED NUCLEAR FISSION FUEL MODULE, METHODS THEREFOR, AND A VENTED NUCLEAR FISSION FUEL MODULE SYSTEM  
Illustrative embodiments provide a nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system.
US20110280359 SELF LOCKING MAST ASSEMBLY AND METHOD OF MAKING  
A mast arrangement having two elongate individual masts. The first elongate individual mast comprises a hollow connector comprising an inner diameter. The second elongate individual mast comprises...
US20120014493 REACTOR HEAD SEISMIC SUPPORT TIE ROD SYSTEM  
A quick disconnect for a control rod drive mechanism seismic support tie rod system that is remotely operable from a nuclear power plant's operating deck. A wall mounted anchor in the reactor...
US20120236978 TOOL FOR DELIVERY OF TESTING ELEMENT TO A LIMITED ACCESS LOCATION WITHIN A NUCLEAR CONTAINMENT  
An improved tool for delivery of a testing element to a limited access location within a nuclear containment includes a rotation apparatus having a connection element that is configured to have an...
US20130195238 Method of Repairing Shroud Support and Repair Apparatus Thereof  
A shroud support of a BWR includes a shroud support cylinder, shroud support legs welded to a bottom of a reactor pressure vessel (RPV) and a shroud support cylinder, and an annular shroud support...
US20110007861 Machinery system allowing replacement of old reactor with a new reactor in nuclear power electric generating station  
The machinery system and its application herewith, intended to create an opening in the roof of a Reactor Primary Containment of Generation II and III Nuclear Power Electric Generating Station....
US20120224663 NUCLEAR STEAM GENERATOR SUPPORT AND ALIGNMENT STRUCTURE  
A nuclear steam generator support and alignment system that supports the entire weight of a nuclear steam generator on the walls of the shielding compartment in which the steam generator is...
US20120269311 IN-REACTOR PIPING WORK DEVICE AND IN-REACTOR PIPING WORK METHOD  
According to an embodiment, a horizontally moving stage is mounted on a cylindrical structure within a reactor pressure vessel, travels horizontally along the surface of the cylindrical structure...
US20070140404 Instrument removal system  
An instrument removal system for removing detector cables from a nuclear reactor includes a removal cart and a disposal cask. in an exemplary embodiment, the removal cart includes a base including...
US20130170597 PREVENTIVE MAINTENANCE/REPAIR DEVICE AND PREVENTIVE MAINENANCE/REPAIR METHOD FOR CYLINDRICAL STRUCTURE  
A preventive maintenance/repair device 10 of the present invention includes: a device body 11, and holding mechanisms 13a and 13b connected to the device body 11, the holding mechanisms 13a and...
US20110142187 METHOD FOR REMOVING THERMAL SLEEVE FROM COLD LEG OF REACTOR COOLANT SYSTEM  
Disclosed is a method for removing a thermal sleeve from a cold leg of a reactor coolant system, which enables removal of an unintentionally separated thermal sleeve without implementation of a...
US20100014622 Nut assembly for handling poles and method thereof  
An apparatus and method for manufacturing a handling pole including a pole section, a pole adapter connected to one end of the pole section, a spade member connected to the other end of the pole...
US20120099692 SUBMERSIBLE MACHINE STRUCTURED TO CARRY A TOOL TO A LIMITED ACCESS LOCATION WITHIN A NUCLEAR CONTAINMENT  
A tool for delivery of a testing element to a limited access location within a nuclear containment includes a rotation apparatus having a connection element that is configured to have an aperture...
US20090245451 MOBILE RIGGING STRUCTURE  
A U-framed structure that spans a reactor vessel of a pressurized water reactor power plant and rides on wheels that fit on the rails of the nuclear plant's refueling machine. A curved monorail is...
US20080008287 Method of providing and evaluating a mid-wall repair  
A method of repairing a connection between a first nozzle and a closed vessel includes cutting through an entire thickness of the first nozzle at a location adjacent to the mid-wall of the vessel....
US20050105672 Device permitting the modulation of absorption, emission, moderation or reflection of radiation or a particle flow  
A device comprising a bundle of channels (8, 23), tubes or similar units permanently is arranged in the reacotr and designed to contain a neutrophage fluid that absorbs neutrons. In addition, this...
US20130259182 TRAVELING REACTOR POWER MONITORING SYSTEM AND METHOD FOR CONTROLING RETRACTING A TRAVELING PROBE  
A traveling reactor power monitoring system includes a traveling reactor power monitoring system including a drive control unit configured to move a traveling probe in a guide tube by rotating a...
US20090067564 System For Exchanging A Control Rod Drive  
A system for exchanging a control rod drive of a nuclear reactor is provided. The system may include an integrated drive exchange assembly system (IDEAS). The IDEAS may include a trunnion cart...
US20150228364 SYSTEMS AND METHODS FOR DISMANTLING A NUCLEAR REACTOR  
Systems and methods for dismantling a nuclear reactor are described. In one aspect the system includes a remotely controlled heavy manipulator (“manipulator”) operatively coupled to a support...
US20110235768 SYSTEMS AND METHODS FOR DISMANTLING A NUCLEAR REACTOR  
Systems and methods for dismantling a nuclear reactor are described. In one aspect the system includes a remotely controlled heavy manipulator (“manipulator”) operatively coupled to a support...
US20100020914 REACTOR SERVICING PLATFORM  
A servicing platform for a nuclear reactor refueling floor is provided. In various embodiments, the servicing platform includes a base structured to be anchored to a refueling floor of the nuclear...
US20100002825 AUTOMATIC CONNECTION DEVICE AND METHOD FOR REMOTELY CONNECTING THE DUCTS FOR GUIDING A THERMOCOUPLE FOR THE UPPER INTERNALS OF A NUCLEAR REACTOR  
The invention relates to a device for connecting the upper (21) and lower (23) guide ducts for guiding a thermocouple for the upper internals of a nuclear reactor. The device comprises a plug (41)...
US20110235769 CONTROL ROD TRANSFER DEVICE  
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...
US20130070884 MAINTENANCE AND REPAIR DEVICE FOR STRUCTURE INSIDE NUCLEAR REACTOR  
A maintenance/repair device for reactor internal structure 6 of the present invention includes a device body 6a configured to be fixed on a reactor internal structure 49. Connected to the device...
US20120294405 PRESSURIZED WATER REACTOR WITH UPPER VESSEL SECTION PROVIDING BOTH PRESSURE AND FLOW CONTROL  
A pressurized water reactor (PWR) includes a vertical cylindrical pressure vessel having a lower portion containing a nuclear reactor core and a vessel head defining an internal pressurizer. A...
US20100054388 Sealing Means, Transfer Device Comprising Such a Sealing Means, Arrangement Comprising Such a Transfer Device and a Method for Producing Said Sealing Means  
Sealing means comprising a seal carrier and a seal connected thereto, wherein the seal carrier is removably fixable between two areas insulated from each other, and a transfer device between two...
US20150200027 PRESSURIZED WATER REACTOR WITH UPPER VESSEL SECTION PROVIDING BOTH PRESSURE AND FLOW CONTROL  
A pressurized water reactor (PWR) includes a vertical cylindrical pressure vessel having a lower portion containing a nuclear reactor core and a vessel head defining an internal pressurizer. A...
US20050238130 Refueling work platform  
The present invention comprises a refueling work platform for use during reactor refueling operation to allow inspection/repair of the reactor vessel simultaneously with the removal and insertion...
US20110096889 INDEXING DEVICE INSTALLATION UNIT  
Maintainability of a traversing in-core probe is improved without any hindrance to passage and the like in an access tunnel in which an indexing device of a TIP system is installed. An indexing...
US20140126681 SUPPORT PIN REPLACING APPARATUS FOR CONTROL ROD CLUSTER GUIDE TUBE  
The support pin replacing apparatus for a control rod cluster guide tube includes a frame submerged in water, a movement device that holds the control rod cluster guide tube and moves the control...
US20110299648 CONTROL ROD DRIVE SHAFT UNLATCHING TOOL  
A CRDS unlatching tool includes a support assembly and a latching assembly, wherein the support assembly is received within the latching assembly in a manner wherein the latching assembly is...
US20110274231 DUAL DRIVE WINCH AND NUCLEAR REACTOR VESSEL MAINTENANCE APPARATUS EMPLOYING SAME  
A dual drive winch having a drive assembly having a first shaft that is selectively movable between a first engaged position and a first disengaged position, and a second shaft that is selectively...
US20100046691 METHOD FOR DISMANTLING A CONTROL ELEMENT OF A BOILING WATER REACTOR  
A method enables dismantling of a control element of a boiling water reactor. Two control element leaves that are disposed opposite one another are separated by means of a roll-cutting method from...
US20090116606 JOINT TONG APPARATUS FOR RADIATION SHIELDING FACILITY  
A joint tong apparatus for a radiation shielding facility. A spherical ball has a through-hole. An inner spherical socket and an outer spherical socket are installed in a hole formed in a...
US20070253518 Working device and working method  
A working apparatus has: a working equipment for doing works on a structure; a folding/unfolding mechanism for conveying the working equipment to the working position in a folded state; a...
US20090323882 Method for providing a dry environment for underwater repair of the reactor bottom head using a segmented caisson  
Welding repairs are performed in an underwater environment adjacent the bottom head of the nuclear reactor vessel. To provide a dry welding environment, segments of a lower caisson are passed...
US20100150296 PREVENTIVE MAINTENANCE/REPAIR DEVICE AND PREVENTIVE MAINTENANCE/REPAIR METHOD FOR CYLINDRICAL STRUCTURE  
A preventive maintenance/repair device 10 of the present invention includes: a device body 11, and holding mechanisms 13a and 13b connected to the device body 11, the holding mechanisms 13a and...
US20060188053 Method and device for loading nuclear fuel pellets  
Method and device for loading nuclear fuel pellets into a cladding provided with its first plug, by means of an introduction element and using limited forces.
US20120027154 NOZZLE STUB WORKING SYSTEM FOR REACTOR VESSEL  
Disclosed is a nozzle stub working system for a reactor vessel that performs work inside a nozzle stub of the reactor vessel, the nozzle stub working system for the reactor vessel including: a...
US20050220254 Method and device for dismantling a control element of a boiling water reactor  
A method and device enables dismantling of a control element of a boiling water reactor. Two control element leaves that are disposed opposite one another are separated by means of a roll-cutting...
US20120063559 CLAMPING JIG AND SYSTEM FOR MEASURING SPACER GRIDS FOR NUCLEAR FUEL ASSEMBLY  
In a clamping jig and system for inspecting spacer grids for a nuclear fuel assembly, the jig firmly and precisely clamps a variety of grids on a measurement stage moving at high speed so that,...
US20150016582 COOLING DUCT ASSEMBLY FOR CONTROL ELEMENT DRIVE MECHANISM  
The cooling duct assembly for a control element drive mechanism (CEDM) includes a skirt that is combined on a circumference of a reactor head and has first air channels in an inner side thereof; a...
US20050265510 Multi-plant adaptable boiling water reactor inspection work platform  
The present invention provides a multiple section work platform capable of being installed in various BWRs with each section being easily transported in sea-land containers and easily assembled on...
US20130287160 RISER TRANSITION ELEMENT FOR COMPACT NUCLEAR REACTOR  
A nuclear reactor core is disposed in a pressure vessel along with upper internals disposed in the pressure vessel above the reactor core. The upper internals include internal control rod drive...
US20140185728 SYSTEMS AND METHODS FOR DISPOSING OF ONE OR MORE RADIOACTIVE COMPONENTS FROM NUCLEAR REACTORS OF NUCLEAR PLANTS  
A system for disposing of one or more radioactive components from a nuclear reactor may include a first receptacle configured to receive the one or more radioactive components, a frame configured...
US20060171499 Protection of reactor cores from unstable density wave oscillations  
The present invention provides a method of operating a Boiling Water Reactor, having the steps of analyzing LPRM signals for oscilliatory behavior indicative of neutron-flux-coupled density wave...
US20100310032 METHOD FOR FILLING THE MAIN PRIMARY COOLANT SYSTEM OF A NUCLEAR POWER PLANT WITH WATER AND FOR DRAINING IT OF AIR, AND HEAD FOR IMPLEMENTING THIS METHOD  
The invention relates to a method for the water filling and air blow-off of a main primary circuit (1) of a nuclear unit after stopping the same, said main primary circuit (1) including a tank (2)...

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