Deutsche Gesellschaft Fur Wiederaufarbeitung Von Kernbrennstoffen Mbh

Nuken Gmbh

Brennelementlager Gorleben Gmbh

Franz W Popp

Wolfgang Madle

Norbert Gawlik

Gunter Geisert

Apparatus for welding and testing a weld on a cover for a container for radioactive material. Two carriages are mounted on a bridge extending across and above the container. Gas shielded arc welders are mounted on the carriages. The carriages move across the bridge to accurately locate the welder with respect to the joint being welded. The container is mounted on a rotating platform to move the weld area past the welder and the test devices which are fixed when in working position.

Apparatus for sealing a container for the storage of radioactive material

A method is disclosed for loading and sealing a double container for tranrt and storage of radioactive material in which an inner cover is screwed into the inner container while said inner container is in a hot cell, and welding a second cover on the inner container outside the hot cell.

Method and device for the loading and sealing of a double container

The invention relates to an apparatus for automatic or remotely operated welding of the cover and/or the bottom of the walls of a container for receiving and storing radioactive fuel elements and wastes in a hot cell by employing the narrow joint welding technique, comprising at least one sensor sensing the course of the weld line between the container wall and the container cover and/or bottom effective to assist at least one three-dimensionally movable welding head controlled by control means utilizing signals supplied by the sensor to guide it along the joint for producing a continuous welding seam consisting of a plurality of super-imposed and offset weld beads or passes, respectively. to obtain improved welding results and for safe and trouble-free automatic and/or remotely operated welding, the loaded container including the attached cover and/or bottom is caused to rotate about its longitudinal axis, and the joint between the container wall and cover and/or bottom is caused to move past the sensors and the welding heads. Upon completion of the welding operation the welding slag is removed. Sensors are provided for the lateral and vertical guidance of the welding head. The welding is effected under flux. A chisel and a nailer are employed to loosen the welding slag which is removed from the weld by a suction nozzle.

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Wedemark, Germany

Franz W Popp