AREVA GMBH Patent applications |
Patent application number | Title | Published |
20150369472 | LANCE FOR REMOVING DEPOSITS ADHERING TO THE TUBE SHEET OF A STEAM GENERATOR - The invention relates to a lance for removing deposits adhering to the tube sheet of a steam generator, comprising a flexible strip which is introducing into intermediate tube areas of the steam generator, which has a cleaning head at the free end of the strip, and which comprises at least one water hose that is used to supply a flow of water to the cleaning head. In a use situation, the cleaning head comprises a working face which faces the tube sheet or deposits present thereon, an outlet opening which is fluidically connected to the water hose and opens into the working face, and a mechanical tool which acts on the deposits and removes material. | 12-24-2015 |
20140169514 | NUCLEAR REACTOR ASSEMBLY HAVING A CONNECTION BETWEEN A CONTROL ROD GUIDE TUBE AND A DRIVE HOUSING PIPE - A boiling water reactor assembly includes a bayonet plate closure between a control rod guide tube and a drive housing pipe. The bayonet plate closure has a bayonet plate constructed in two parts including a central bayonet ring mounted rotatably about its longitudinal axis and an outer ring completely surrounding the bayonet ring. The outer ring is mounted on the periphery of the bayonet ring and reaches inwards under the bayonet ring periphery. The ring is furthermore permanently supported in the axial direction on the drive housing pipe by spring pressure acting on the control rod guide tube, in order to produce a frictional connection. The spring pressure can be released unhindered from the reactor side by tools. | 06-19-2014 |
20140102482 | METHOD FOR CLEANING AND CONDITIONING THE WATER-STEAM CIRCUIT OF A POWER PLANT, ESPECIALLY OF A NUCLEAR POWER PLANT - A method for cleaning and conditioning the water-steam circuit of a power plant, especially of a nuclear power plant, uses an amine as a film-forming agent. The amine is metered into the working medium circulating in the water-steam circuit. The film-forming agent forms a hydrophobic film on the surfaces of the circuit. During the process, the concentration of at least one impurity contained in the water and the concentration of the film-forming agent in at least in the feed water of the steam generator are measured and monitored. The concentration of the film-forming agent is varied, as needed, subject to the concentration of the impurity. | 04-17-2014 |
20140102481 | METHOD FOR CONDITIONING A POWER-GENERATING CIRCULATORY SYSTEM OF A POWER PLANT - A method for conditioning the circulatory system ( | 04-17-2014 |
20140090730 | DEVICE FOR SEPARATING A FLUID MASS FLOW - A device separates a fluid mass flow in a nuclear plant. The device contains a primary end piece for conducting the fluid mass flow and a plurality of secondary end pieces for conducting a plurality of separate partial flows of the fluid mass flow. A number of separating elements is provided in the area within the primary end piece, and each of the partial areas defined by the separating element or the separating elements opens in a secondary end piece clearly assigned to the partial area. | 04-03-2014 |
20140083044 | ANCHORING SYSTEM BETWEEN A CONCRETE COMPONENT AND A STEEL COMPONENT - An anchoring system for forming a non-releasable connection between a concrete component, has a reinforcement containing at least one steel bar mesh, and a steel component. At least one anchoring element formed of an anchor strip is cast into the concrete component in such a way that at least one connecting surface projects at least partially from the concrete component. This improves the loadability of the anchoring. For this purpose, the anchor strip has a number of recesses which extend at least partially into the concrete component and which are each traversed by at least one steel bar of the steel bar mesh. | 03-27-2014 |
20140062464 | APPARATUS FOR DETECTING A MAGNETICALLY CONDUCTIVE OBJECT AND POSITION MEASURING SYSTEM FOR MEASURING THE POSITION OF A GUIDE ROD AND ASSOCIATED POSITION MEASURING METHOD - An apparatus for detecting a magnetically conductive object in a detection area has an electrical coil and at least one sensor element. The apparatus is intended to be as free of degradation processes as possible and thus requires little maintenance and is configured and set up with the highest possible degree of redundancy and measurement reliability. For this purpose, the coil is set up to form a magnetic field in the detection area and the sensor element is configured to detect a magnetic field with a field strength, the magnitude of which is greater than a predefined threshold value. The threshold value is set to be higher than the field strength present in the detection area when the magnetically conductive object is absent and lower than the field strength present therein when the object is present. | 03-06-2014 |
20140013699 | WALL MODULE FOR BUILDING A STRUCTURE, ASSOCIATED STRUCTURE AND CONNECTOR SYSTEM - A wall module is configured as a concrete prefabricated building element for building a structure and can be connected to further wall modules to form a structure and is configured to withstand improbable extreme loads. The wall module has a wall body with multiple edges, a plurality of reinforcement rods which all together form a regular reinforcement grid, and each extend parallel to the edges, and which are cast into the wall body. The reinforcement rods each penetrate the wall body substantially from edge to edge, and provided at their ends with connecting elements configured to establish a connection with complementary connecting elements of an immediately adjacent wall element. Each of the connecting elements is connected with clearance to the associated reinforcement rod such that it can be moved in a plane which is perpendicular to the longitudinal direction on all sides by at least 2 mm. | 01-16-2014 |