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Areva NP GmbH Patents
Assignee:
Areva NP GmbH
Address:
Erlangen, DE
No. of patents:
43
Patents:












Patent Number Title Of Patent Date Issued
8295427 Control rod for a pressurized water nuclear reactor October 23, 2012
A control rod for a pressurized-water nuclear reactor contains an absorber rod which is arranged in a casing tube. At least in a lower section, the absorber rod is provided with at least one recess which takes up at most a portion of the circumferential surface of this section. This
8290111 Electrochemical corrosion potential device and method October 16, 2012
The invention provides at least two electrochemical sensors positioned in a nuclear reactor or in a system adjacent to the nuclear reactor, wherein at least one of the at least two electrochemical sensors has a heated zirconium electrode, and the at least two electrochemical sensors prod
8282137 End piece for a corrugated hose and parts set containing such an end piece October 9, 2012
An end piece for a corrugated hose contains a bushing having a front region and a rear region opposite of a longitudinal direction. The rear region is located inside the hose in a mounted state of the bushing. The front region has a collar forming a groove for receiving the free end of
8234911 Method and apparatus for detecting a leak in a double pipe August 7, 2012
In a method for detecting a leak in a double pipe, a medium located in an intermediate chamber between the interior and exterior pipe is moved toward a first end of the pipe, whereupon the medium flows in from the second end. On the first end the medium is examined for any leakage of a
8218709 Nuclear plant and method for the pressure relief in a nuclear plant July 10, 2012
A nuclear installation has a reactor containment which is connected to a pressure relief line. A Venturi scrubber, which is arranged in a vessel containing a washing liquid, and a throttle device are connected in series in the pressure relief line. The novel system restrains, with pa
8217295 Method for producing a welded connection for use in a corrosive environment July 10, 2012
A method produces a welded connection between first and second components each having inner and outer sides interconnected by an end face. The first component has a ferritic basic body carrying a plating at the inside and having an end face with a buffer layer of Ni-based alloy. The
8194816 Boiling water reactor nuclear power plant with alcohol injection June 5, 2012
A nuclear power plant is provided including a BWR, a reactor cooling system cooling the BWR, an HWC hydrogen injection system connected to the reactor cooling system and an alcohol injection system connected to the reactor cooling system. Methods for providing methanol and hydrogen are
8191406 Method and device for pretreating a fuel rod cladding tube for material tests, test body and met June 5, 2012
A method for treating or preparing a fuel rod cladding tube in such a way that an influence of iron oxide deposits on its surface can be studied and assessed precisely under virtually operational conditions with as little risk as possible, includes at least partially coating the fuel rod
8126107 Nuclear engineering plant and closure apparatus for its containment February 28, 2012
A nuclear engineering plant has a containment, whose interior chamber is subdivided by a wall into a systems chamber and an operating chamber which is accessible during normal operation. The containment ensures a particularly high operational reliability, in particular also in incident
8045671 Injection system and associated operating method October 25, 2011
A feeding system for an absorber liquid containing a neutron poison, in particular for a quick shut-down of a nuclear reactor, has a storage container for the absorber liquid and is configured for high operational reliability with simple construction. In particular, a chemical decomp
8027424 Fuel element for a boiling water reactor September 27, 2011
A fuel assembly for a boiling-water reactor has a water channel and a fuel assembly base, made from a sieve plate and a frame section enclosing the same. The water channel supports a plug with a bore running therethrough, at the lower end thereof, to which the fuel assembly base is f
8021494 Method for the decontamination of an oxide layer-containing surface of a component or a system o September 20, 2011
A method of decontaminating an oxide layer-comprising surface of a component or a system of a nuclear facility. An acidic water film is produced on the surface, the film of water is brought into contact with a gaseous acid anhydride, and the oxide layer is treated with gaseous ozone
7931753 Method for removing deposits containing magnetite and copper from containers in industrial and p April 26, 2011
A method to remove deposits containing magnetite and copper from a container, particularly from a steam generator of a nuclear power plant. In a first step, the container is treated using an alkaline cleaning solution containing a complexing agent forming a soluble complex with iron
7926345 Apparatus for measuring a filling level April 19, 2011
An apparatus for measuring the filling level in a liquid vessel, in particular in a reactor vessel of a nuclear-engineering plant, with a plurality of elongate, spaced-apart measurement tubes. Each measurement tube has a number of thermocouples which are distributed in the longitudin
7873136 Injection system and associated operating method January 18, 2011
A feeding system for an absorber liquid containing a neutron poison, in particular for a quick shut-down of a nuclear reactor, has a storage container for the absorber liquid and is configured for high operational reliability with simple construction. In particular, a chemical decomp
7822167 Nuclear facility and method for operating a nuclear facility October 26, 2010
A technical installation, especially a nuclear power plant, has a number of system components that are respectively supported by a number of beams, and a number of pressurized conduits. The technical installation is designed in such a way that secondary damage occurring in the surrou
7822166 Fuel assembly for a boiling water reactor October 26, 2010
A fuel assembly for a boiling water reactor contains a plurality of fuel rods maintained laterally by spacers and surrounded by a fuel assembly case. The outer walls of a spacer are provided with projecting elements that maintain a minimum space between the outer surface of the spacer an
7802465 Collecting conduit, apparatus and method for leakage monitoring and leakage location September 28, 2010
A collecting conduit for leakage monitoring and leakage location at an installation, includes a support pipe having openings. An outer surface of the support pipe is covered by a layer being permeable to a substance to be monitored, at least on a segment extending in longitudinal dir
7789966 Method for cleaning the pipes of a heat exchanger by use of an abrasive and device suitable for September 7, 2010
A method and device for cleaning pipes of a heat exchanger includes placing a throttle-free jet nozzle against an end of a pipe. The throttle-free jet nozzle has an outlet opening of a same size or slightly smaller than an inner cross-sectional area of the pipe. A stream of air conta
7779526 Method for the production of a collecting line for detecting and locating an agent discharging i August 24, 2010
A method for producing a collecting line, and a collecting line produced according to the method is provided for detecting and locating an agent discharging into the environment of the collecting line in case of leakage. Such a collecting line has a carrier pipe, the wall of which is
7778378 Leak detection method for testing fuel rods of fuel assemblies of a boiling water reactor for le August 17, 2010
Fuel rods of fuel assemblies of a boiling water reactor are tested for leaks. A plurality of fuel assemblies are each arranged adjacent to one another in a cell of the upper core grid of the boiling water reactor. A hood is placed above a plurality of cells A water sample is taken from
7770435 Pipeline having a collector line and method for leakage monitoring and leakage location August 10, 2010
A collector line for leakage monitoring and leakage location at a plant includes a carrier tube having a wall with openings formed therein, which are sealed with silicone rubber. This makes it possible to use the collector line during low ambient temperatures. A device and a method for
7751522 Covering element for a reactor core of a nuclear installation, and nuclear reactor July 6, 2010
A covering element for a reactor core of a nuclear installation provides a secure and tight closure of the reactor core in an operating state and at the same time being simple and cost effective to produce. The covering element is easily disassemblable during maintenance or loading proce
7684951 Method and device for detecting a pulse-type mechanical effect on a system part March 23, 2010
A method and a device for detecting a pulse-type mechanical effect at a system component, include continuously recording an operating noise in the system component with a sensor disposed at the system component and converting the operating noise with the sensor into a measured signal
7680237 Containment vessel and method of operating a condenser in a nuclear power plant March 16, 2010
A containment vessel of a boiling-water nuclear power plant and a method of operating a condenser in a nuclear power plant, include a drain pipe which connects a top region of the containment vessel to a condensing chamber disposed in the containment vessel. The drain pipe draws off
7668282 Method for assembling a pressurized water reactor core, and reactor core configuration February 23, 2010
The core of a pressurized water reactor is assembled in such a way that if the fuel elements on the edge of the core are bent, these fuel elements are oriented such that the bending of the fuel elements points outwards in a convex manner. When the reactor is in operation, forces arise wh
7606344 Containment of a nuclear power plant October 20, 2009
A containment of a nuclear power plant has a pressure chamber, a condensation chamber, and a substantially vertically running condensation tube. The upper end of the tube is connected to the pressure chamber and the lower end of the tube is immersed in a cooling liquid in the condens
7591285 Pipeline configuration for the transport of a liquid, especially petroleum September 22, 2009
A pipeline configuration for the transport of a liquid, especially petroleum, contains a pipeline laid above ground, beneath which is disposed a sensor line for detection of a leak, extending along the pipeline in its longitudinal direction. The sensor line is disposed in a catchment
7573315 Control device and method of operating the control device having controller chips and change-ove August 11, 2009
A control device contains a plurality of controllers, a common signal output, and a change-over unit. The controllers are coupled on an output side to the common signal output through the change-over unit. A plurality of differentiating elements are disposed upstream of the change-ov
7555093 Spacer for a fuel assembly of a boiling water reactor June 30, 2009
A spacer for a fuel assembly of a boiling water reactor has a frame formed of outer webs and inner webs disposed crosswise relative each other. Gills are disposed on the exterior of the outer webs. The exterior of the outer webs of the spacer is provided with a plurality of projections i
7553422 Method and device for purifying water of nuclear installations June 30, 2009
A method of purifying water in a nuclear installation includes an ion exchange mechanism in which the water is purified with an ion exchanger. Before being guided over the ion exchanger, the water is brought into contact with a catalyst in order to decompose hydrogen peroxide that is
7542860 Method and device for detecting the location of a pulse-type mechanical effect on a system part June 2, 2009
A method and device detect a position of a pulsed mechanical effect on a plant component. An operating noise in the plant component is continuously recorded by sensors which are arranged on the plant component and converted by the above into a measured signal. The measured signals of
7532699 Nuclear facility and method for operating a nuclear facility May 12, 2009
A nuclear facility contains a flood tank, which is provided for holding a cooling liquid, a condensation chamber, and an overflow device, which leads from the flood tank to the condensation chamber and which serves to discharge excess cooling liquid. The overflow device is provided for
7495197 Method and apparatus utilizing first and second heating devices for heat treating a fuel assembl February 24, 2009
In a method for heat treating a fuel assembly channel made of zircaloy, the channel is continuously moved relative to a heat-treatment device and, longitudinal sections of it are heated to the beta phase range in an inductive heating zone. The longitudinal section of the channel heated i
7455818 Method for treating a flow of gas and gas treatment system November 25, 2008
A method treats a flow gas that is guided via a catalytic adsorber module to oxidize contaminants carried in the flow gas. The method reliably purifies the flow gas using equipment that is held to a comparatively low level of complexity. To this end, the flow gas is guided in a first
7441485 Apparatus for dismantling a radioactively contaminated installation part and method for dismantl October 28, 2008
An apparatus for dismantling a radioactively contaminated tubular installation part which is located under water contains a base part which can be fixed to the installation part and in which a rolling cutting apparatus is mounted. The rolling cutting apparatus can be positioned in or
7428479 Method for computer modeling the core of a nuclear reactor September 23, 2008
In a computer modeling method for the core of a nuclear reactor the core is divided into a plurality of primary grids in the form of coarse mesh cells. A sub-section of the core relating to at least one grid is assigned to that grid. The sub-section includes that grid and a buffer zo
7424086 Fuel assembly for a pressurized-water nuclear reactor September 9, 2008
A fuel element for a pressurized water reactor has fuel rods guided through a number of axially spaced spacers. The spacers form a square grid with mesh openings arranged in rows and columns. Support tubes that do not contain fuel pass through a number of the mesh holes and are joine
7421056 Fuel assembly for a boiling water reactor September 2, 2008
A spacer for a fuel element of a boiling water reactor contains cells that are formed by inner partitions, which are disposed in a crisscross manner, and by outer partitions, which surround the inner partitions in a frame-like manner. A guiding device is placed on the spacer and contains
7418072 Spacer August 26, 2008
A spacer for a fuel assembly for a light water nuclear reactor contains a plurality of intercrossed segments, which form a grid. The segments are formed from first and second metal strips which are assembled and provided with protruding parts or corrugations in such a way that the ad
7397884 Aligning device for fuel elements of a pressurized water reactor July 8, 2008
An aligning device for fuel elements allows fuel elements of a pressurized water reactor to be aligned in a comparatively easy and quick manner. To this end, the aligning device for fuel elements includes an aligning body, which extends in a longitudinal direction and whose lateral faces
7352838 Reactor pressure vessel of a boiling water reactor and method for water vapor separation in a re April 1, 2008
A pressure vessel of a reactor has a flow space between the reactor core and a separation device for separating water from water steam. The cross-section area of the flow section of the space expands upstream of the separation device. This makes it possible to pre-separate a water-wa
7270019 Collecting line assembly for monitoring and locating leaks September 18, 2007
An assembly for monitoring and locating leaks in an installation includes a collecting line formed of a material that is impermeable to a substance to be monitored. The collecting line has a multiplicity of openings spaced apart in its longitudinal direction. The openings are closed with

 
 
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