Abstract: A method for dismantling a steam generator or heat exchanger, such as found in nuclear power plants, which steam generator or heat exchanger includes a plurality of primary circuit tubes with a contaminated inner surface and wherein one or more tubes are sealed with a plug at both end is provided, the method comprising a) opening one or both ends of each sealed tube by creating an opening in or removing, the plug (13); b) introducing a viscous polymer to cure inside the tube wherein the polymer fills the tube across the full tube cross-section at least at the tube ends, immobilizing contaminations in the filled portion inside the tube (11); c) curing the polymer, then detaching the tubes with cured polymer the detached tubes being sealed by the polymer d) sorting out the detached tubes with polymer.

Abstract: A repairing system (2) is used for applying an adhesive to a location to be repaired underwater in a container. The repairing system (2) comprises a movable and remotely controlled repairing robot (10) that is configured to be driven underwater. The repairing robot (10) comprises a repairing module (12) that is configured to be coupled with an adhesive applying module (34). The adhesive applying module (34) is configured to dispense an adhesive on the location to be repaired. Further, a repairing method is described.

Abstract: A method for dismantling a steam generator or heat exchanger, such as found in nuclear power plants, which steam generator or heat exchanger includes a plurality of primary circuit tubes with a contaminated inner surface and wherein one or more tubes are sealed with a plug at both end is provided, the method comprising a) opening one or both ends of each sealed tube by creating an opening in or removing, the plug (13); b) introducing a viscous polymer to cure inside the tube wherein the polymer fills the tube across the full tube cross-section at least at the tube ends, immobilizing contaminations in the filled portion inside the tube (11); c) curing the polymer, then detaching the tubes with cured polymer the detached tubes being sealed by the polymer d) sorting out the detached tubes with polymer.

Abstract: A device for repairing damage to a bottom of a container filled with water is disclosed. The device comprises a guiding device, which can be placed on the bottom of the container and which has a centering device for centering the guiding device between wall sections of the bottom elements. The devices further comprises a fixing device for fixing the guiding device on the bottom of the container, a carrier, which can be guided along the guiding device and on which at least one pivot arm is arranged, and an accommodating element arranged at a free end of the pivot arm, for accommodating adhesive, with which part of a wall section of the bottom elements can be covered.

Abstract: The invention relates to a method and a device for repairing damage to a container wall located under water. A repair device has a carrier having means for fastening the carrier to the container wall, a repair die that has at least one injection opening and at least one outlet opening and can be pressed against the container wall in a remotely controlled manner in order to cover the damage to the container wall and to seal off a chamber formed by the repair die and the container wall, a reservoir for an adhesive, a remotely controllable injection device is arranged on the carrier, which remotely controllable injection device is provided in order to inject adhesive from the reservoir into the injection opening of the repair die so that the chamber formed by the repair die and the container wall is filled by means of the adhesive.

Abstract: A device of repairing a damaged area in an underwater wall region of a container or tank, in particular in the wall region of a tank of a nuclear reactor installation. The device has a guide system that can be mounted along a side wall, at a distance therefrom, and can be secured thereto. At least one first carriage is fitted onto the track of the guide system and movable in a longitudinal direction of the guide system. On the carriage there is displaceably mounted a receptacle for a repair overlay, which can be applied with an adhesive surface to the wall region containing the damaged area. At least one suction mount that is connected to a suction line is disposed on the first carriage and can be suctioned to the side wall.

Abstract: A device for repairing damage to a bottom of a container filled with water is disclosed The device comprises a guiding device, which can be placed on the bottom of the container and which has a centering device for centering the guiding device between wall sections of the bottom elements. The devices further comprises a fixing device for fixing the guiding device on the bottom of the container, a carrier, which can be guided along the guiding device and on which at least one pivot arm is arranged, and an accommodating element arranged at a free end of the pivot arm, for accommodating adhesive, with which part of a wall section of the bottom elements can be covered.

Abstract: The invention relates to a method and a device for repairing damage to a container wall located under water. A repair device has a carrier having means for fastening the carrier to the container wall, a repair die that has at least one injection opening and at least one outlet opening and can be pressed against the container wall in a remotely controlled manner in order to cover the damage to the container wall and to seal off a chamber formed by the repair die and the container wall, a reservoir for an adhesive, a remotely controllable injection device is arranged on the carrier, which remotely controllable injection device is provided in order to inject adhesive from the reservoir into the injection opening of the repair die so that the chamber formed by the repair die and the container wall is filled by means of the adhesive.

Abstract: The invention relates to a gripper for raising and lowering loads and having the following configuration:—it comprises a coupling part and a connecting part,—the connecting part is guided on the coupling part for movement along a movement axis between a first end position and a second end position, wherein those ends of the aforementioned parts which are oriented away from one another are further apart from one another in the first end position than in the second end position,—at least two catch elements are present on the coupling part and can be moved between a gripping position, in which they use a rear-engagement surface to engage behind a mating element of the load, and a release position, in which they release the mating element,—the connecting part is connected to the at least two catch elements via at least one gear mechanism.

Abstract: The invention relates to a gripper for raising and lowering loads and having the following configuration:—it comprises a coupling part and a connecting part,—the connecting part is guided on the coupling part for movement along a movement axis between a first end position and a second end position, wherein those ends of the aforementioned parts which are oriented away from one another are further apart from one another in the first end position than in the second end position,—at least two catch elements are present on the coupling part and can be moved between a gripping position, in which they use a rear-engagement surface to engage behind a mating element of the load, and a release position, in which they release the mating element,—the connecting part is connected to the at least two catch elements via at least one gear mechanism.

Abstract: A device of repairing a damaged area in an underwater wall region of a container or tank, in particular in the wall region of a tank of a nuclear reactor installation. The device has a guide system that can be mounted along a side wall, at a distance therefrom, and can be secured thereto. At least one first carriage is fitted onto the track of the guide system and movable in a longitudinal direction of the guide system. On the carriage there is displaceably mounted a receptacle for a repair overlay, which can be applied with an adhesive surface to the wall region containing the damaged area. At least one suction mount that is connected to a suction line is disposed on the first carriage and can be suctioned to the side wall.

Abstract: A device is provided for repairing a damaged location in an underwater region of a wall of a vessel or pool, in particular in the region of a wall of a pool of a nuclear reactor plant. The device includes a guiding system, which can be attached along a side wall at a distance therefrom and can be fixed thereto, for guiding a carriage which can be made to move in a longitudinal direction of the guiding system. Arranged on the carriage is a displaceably mounted holder for a repair support, which can be placed with an adhesive surface against the wall region containing the damaged location. With such a device, wall regions that are at a great depth and can only be accessed through narrow gaps can be repaired quickly and reliably.

Abstract: 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 containing an abrasive is blown through the pipe for cleaning the pipe.

Abstract: A gypsum-based building material containing from 1 to 25% by weight of zeolites.

Abstract: A polyolefin-containing material including an internal additive, where the internal additive is a triglyceride according to the structure (T): CH2(OR1)—CH(OR2)—CH2(OR3) ??(T) where R1, R2 and R3 are, independently of one another, saturated, mono- or poly-olefinically unsaturated acyl groups containing 8 to 24 carbon atoms, the chain lengths of the acyl groups are the same or different, and the polyolefin-containing material exhibits improved softness is provided. A process for the softening finishing of articles including polyolefins is also provided and includes adding a triglyceride to polymer granules including a polyolefin present in an amount of from about 0.1% to about 40% by weight, based on the weight of the granules, and subjecting to further processing to form a fiber or film.

Abstract: A polyolefin-containing material including an internal additive, where the internal additive is a triglyceride according to the structure (T): CH2(OR1)—CH(OR2)—CH2(OR3) ??(T) where R1, R2 and R3 are, independently of one another, saturated, mono- or poly-olefinically unsaturated acyl groups containing 8 to 24 carbon atoms, the chain lengths of the acyl groups are the same or different, and the polyolefin-containing material exhibits improved softness is provided. A process for the softening finishing of articles including polyolefins is also provided and includes adding a triglyceride to polymer granules including a polyolefin present in an amount of from about 0.1% to about 40% by weight, based on the weight of the granules, and subjecting to further processing to form a fiber or film.

Abstract: A method for the cleaning of heat exchange tubes and a collecting device for the collection of deposits from heat exchange tubes, include releasing deposits and collecting the deposits with a collecting vessel. The collecting vessel has an inlet orifice that completely encloses the underside of a tube plate in which exit-side tube ends are disposed. The collecting vessel has an inflatable hose for sealing off the collecting vessel. The collecting vessel is capable of being folded together, so that it can be introduced through a service orifice into the heat exchanger. The collecting vessel provides simple handling and positioning and serves, in particular, for use in a nuclear plant.