Areva Np Gmbh

Siemens Aktiengesellschaft

Bernd Block

Erhard Friedrich

Dirk Blavius

Hans-Joachim Lippert

Klaus Kurzer

Gregor Munsterjohann

Thomas Schubert

Maximilian Körzendörfer

Andreas Möckel

Otto Porzelt

Martin-Benno Buttner

Michael Gessler

Markus Mindt

Michael Walker

Corey Long

A connecting device including a nut, a screw, a body having a bore for screwing the screw to the nut through the bore with the screw abutting an abutment surface of the body, a screw locking device for preventing loosening of the screw. According to one aspect of the invention, the locking device is adapted for axially retaining the screw into the body after unscrewing the screw.

Connecting device for connecting a guide tube to a lower end nozzle in a nuclear fuel assembly

A nuclear fuel assembly is provided for a boiling water reactor. The nuclear fuel assembly includes a base, a head, and a bundle of full length fuel rods and partial length fuel rods, said bundle extending upwardly and longitudinally from the base to the head. The nuclear fuel assembly includes at least one clamp for longitudinally retaining a lower plug of a partial length fuel rod with respect to the base. The clamp is an additional part fitted to the base, the clamp is at least partially received in a housing provided in the base, and the clamp is assembled to the base by mechanical engagement of complementary assemblies.

BWR nuclear fuel assembly with snap-in sleeve spring

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 in this manner is than cooled in a cooling zone to a temperature within an alpha phase range. The heat treatment is effected by at least two heating devices, which are spaced apart from one another, operate independently of each other, and each contain at least one induction coil and together form a heating zone. The channel section is first heated using a first heating device and then heat-treated using a second heating device which has less power and in that cooling is effected using a stream of inert gas applied to the outer surface of the channel.

Method and apparatus utilizing first and second heating devices for heat treating a fuel assembly channel with induction heating

A grid-shaped spacer includes a sheet-metal web having a web aperture formed therein defining two spaced mutually opposite aperture edges. The aperture edges oppose an elongation of an elongate spring which is curved about a direction transverse to its own longitudinal direction and which has a tab that engages through the web aperture at each of two spring ends. At least one of the tabs is snapped into a notch formed in one of the spring edges opposing the elongation of the spring.

Grid-shaped spacer for a nuclear-reactor fuel assembly

Growing community of inventors

Erlangen, Germany

Bernd Block