Siemens Aktiengesellschaft

Framatome Anp Gmbh

J&uuml;rgen Model

Erwin Laurer

Hermann-Josef Conrads

Karl F&auml;ser

Dietmar Bittermann

Heinz-Werner Hartmann

The fitting, in particular a safety valve, operates according to the relief principle or according to the loading principle. The fitting is opened and closed by a plurality of control parts. The control parts are connected in series in the control line of the fitting and are each actuated by a control valve. The control parts open the fitting only when all the control parts are in a position which opens the fitting. The fitting closes as soon as even only one of the control parts is in a position which closes the fitting.

Assembly having a spring-loaded tandem control valve

A reactor pressure vessel with an upper support plate, in which an equalization opening is provided as a bypass is described. A process for temperature equalization between an upper dome chamber above a support plate and a lower chamber below it is described. It is proposed that the cross section of the equalization opening be variable as a function of the temperature, so that the flow of medium between the upper dome chamber and the lower chamber is varied as a function of the temperature.

Reactor pressure vessel and process for temperature equalization in a reactor pressure vessel

The fitting, in particular a safety valve, operates according to the relief principle or according to the loading principle. The fitting is opened and closed by a plurality of pilot parts. The pilot parts are connected in series in the control line of the fitting and are each actuated by a pilot valve. The pilot parts open the fitting only when all the pilot parts are in a position which opens the fitting. The fitting closes as soon as even only one of the pilot parts is in a position which closes the fitting.

Spring-loaded tandem control valve

A control device includes a pressure-displacement transducer for triggering a control part for activating a safety valve of a pressure vessel. A space in the pressure-displacement transducer can be connected to a blow-off tank through a drainage line. A first embodiment includes a switchover valve device which is associated with the drainage line and connects the space to a take-off line instead of to the blow-off tank when the pressure in the blow-off tank is above a limiting pressure. A second embodiment includes a hydraulic compensating system which exerts a first force on the pressure-displacement transducer, from a pressure in the blow-off tank. That force counteracts a second force produced in the space by that pressure and in particular compensates for that force.

Pilot device for a safety valve

A loading machine for simultaneously transferring fuel elements between a reactor core and a storage rack in a nuclear power station has a mast divided into individual mast parts. Each mast part has its own gripping and guiding devices for gripping and holding the individual fuel elements. The mast is provided on a trolley. At least one of the mast parts is movable horizontally on the trolley and is rotatable about its longitudinal axis. The individual fuel elements can be lifted out of the reactor core simultaneously, their position relative to each other can be changed, and the fuel elements can be set down on a storage rack or a workplace. A method for transferring fuel elements in a nuclear power station is also provided.

Loading machine for transferring closely adjacent elongate articles, in particular fuel elements, and method for simultaneously transferring fuel elements

A blow-off device for live steam includes a filter for radioactive substances in order to increase operational safety in a nuclear power plant. The filter is preferably integrated in a housing of a muffler or sound absorber and is disposed on a slide which is movable along an axis under the effect of gravitational force and in particular also serves as a closure for an outlet opening of the muffler or sound absorber. A method of blowing off live steam is also provided.

Blow-off device and method of blowing off live steam

A pressurizer includes a casing in which at least one spray line ends. The spray line is guided through a wall in a lower region of the casing and is disposed in such a way as to run upward inside the casing. The spray line ends at its geodetically highest point.

Growing community of inventors

Erlangen, Germany

Jürgen Model

Growing community of inventors

Erlangen, Germany

J&uuml;rgen Model

Jürgen Model