Abstract: Method for the manufacture of oxidic sintered nuclear fuel bodies by compacting UO.sub.2 -starting powder or a mixture of UO.sub.2 -and PuO.sub.2 starting powder which contains up to 10% by weight rare-earth oxide, especially Gd.sub.2 O.sub.3, as an additive into blanks and subsequent densification of these blanks by a heat treatment in a sintering atomsphere with reducing action. The UO.sub.2 -starting powder used for compacting has a specific surface in the range of 2 to 4.5 m.sup.2 /g and/or a mean crystallite diameter in the range of 80 nm to 250 nm, and the heat treatment in the sintering atmosphere with reducing action is carried out at a temperature in the range of 1,500.degree. C. to 1,750.degree. C.

Abstract: Method for manufacturing a cladding tube of a zirconium alloy for the nuclear reactor fuel of a nuclear reactor fuel assembly by deformation of a starting tube and subsequent post-treatment of the deformed starting tube. The deformed starting tube is first ground on the outside surface for the post-treatment and is then subjected to a final annealing treatment.

Abstract: Disclosed is a process for gasifying solid carbon fuels with steam. After forming a supersaturated solution of catalyst in steam the pressure is reduced to reaction pressure.

Abstract: Method of extracting liquid hydrocarbons from oil-containing stone or sand, wherein the oil-containing stone or the oil-containing sand undergoes hydrogenating, low temperature carbonization in a reactor at temperatures of 450.degree. to 520.degree. C. and a pressure of approximately 50 bar through the action of carbon monoxide, hydrogen and steam, and wherein the hydrocarbons are separated from the resulting gaseous, low temperature carbonization mixture. The low temperature carbonization mixture from the reactor is cooled in a first separation stage to a temperature of approximately 350.degree. C. to condense the less volatile hydrocarbons. The separated, liquid phase is fed to a solids separator and placed in contact with a circulating gas of carbon dioxide and a C.sub.6 /C.sub.7 hydrocarbon fraction. The low temperature carbonization mixture containing uncondensed gases and more volatile hydrocarbons are washed in a second separation stage with water and cooled to approximately 250.degree. C.

Abstract: A process for extracting hydrocarbons from oil shale comprising the steps of subjecting oil shale under superatmospheric pressure in the presence of hydrogen and steam, to low temperature hydrogenating distillation; separating the resulting fluid distillation mixture into liquid and gaseous products; and returning water and hydrogen separated from the fluid distillation mixture to the low temperature distillation; in which:heat is drawn-off from the hot oil shale, after treatment in a low temperature hydrogenating distillation reactor, by the shale being sprayed wtih water whereby saturated steam is produced in decreasing pressure stages;the saturated steam of the pressure stages and water extracted during product separation are fed into the individual stages of a multi-stage compressor driven by a gas turbine, and are then delivered via a steam supply line to the reactor;the gas turbine is fuelled by supplying separated-off gaseous distillation products thereto; andthe exhaust gases of the gas turbine are fe

Abstract: Electrical compact drive, including first and second independently drivable drive shafts, the second drive shaft being in the form of a hollow shaft and the first drive shaft being disposed within the second drive shaft, a first drive motor driving the first drive shaft and having a stator and a rotor, a second drive motor driving the second drive shaft and having a stator and a rotor, and a transmission being connected between the second drive motor and the second drive shaft and having an outer output element and an inner drive element being coupled with the rotor of the second drive motor and being coaxial with the outer output element, the stators of the first and second drive motors, the outer output element of the transmission and the second drive shaft being rigidly coupled together for obtaining synchronism.

Abstract: An arrangement for extracting crude oil from oil shale comprising: a low temperature carbonization reactor; a processing means for feeding a slurry of oil shale, solvent and hydrogen into the low temperature carbonization reactor; a separating means for separating the resulting gaseous low temperature carbonization mixture from the used oil shale and for separating the low temperature carbonization mixture into gaseous and liquid low temperature carbonization products; a gas turbine the exhaust gas outlet of which is connected to two heat exchangers, one of which heat exchangers is disposed in a circulation system for a scavenging gas, which circulation system includes a separating reactor (which forms part of said separating means) in which in use the scavenging gas flows upwardly in counterflow to the oil shale for separation of the fluid low temperature carbonization mixture from the used oil shale, and the other of which heat exchangers is disposed between the low temperature carbonization reactor and sai

Abstract: High-energy laser of the TE-type with excitation taking place by an arc-free capacitor discharge being as homogeneous as possible, including a housing having walls formed at least partially of high voltage-resistant insulating material defining a laser chamber having a gas space, at least two first and second electrodes being extended in the laser chamber and surrounded by regions of the housing walls, the electrodes being disposed opposite each other, spaced apart and parallel to the optical axis of the laser, the excitation taking place in the gas space between the electrodes, a preionization device disposed in the laser chamber, a current feed connected to the first electrode, a current return being connected to the second electrode and being in the form of metallic wall portions extended from the second electrode along the outside of the housing of the laser chamber at least to the vicinity of the region of the housing wall surrounding the first electrode, the insulating material of the housing in the gas

Abstract: Sample-taking apparatus, includes a container for bulk material feed, the container having an upper cover region, a lower discharge region and a side wall having a discharge opening formed therein, the bulk material feed flowing at least discontinuously from the upper cover region to the lower discharge region of the container, an exposed sample-taking worm being attached to the side wall and projecting through the discharge opening into the feed for conveying bulk material samples from the feed by rotating, a rotary drive connected to the sample-taking worm, and a collecting device integral with the container, the worm having a shaft with an end, at least the end being immersed in the feed, the worm having worm threads formed thereon with surfaces forming an imaginary surface of projection extended normal to the worm shaft, the worm thread surfaces forming worm segments with increasingly smaller conveying surfaces as seen in direction toward increasing depth of immersion of the worm into the feed, during sam

Abstract: An increased reaction velocity is achieved when gasifying a raw carboniferous material with H.sub.2 O. The raw material is suspended or emulsified in a liquid aqueous solution of a catalytically active salt, and the amount of the catalytically active salt and the pressure are such that the aqueous solution is maintained in the liquid phase.

Abstract: Solidifying radioactive liquid concentrate residues containing borates by embedding in a binder by mixing. Prior to embedding, sodium hydroxide is added to the waste concentrate to obtain a mole ratio of sodium to boron of 0.25 with a corresponding pH value in the range of 7.3 to 8.0 or 0.7 with a corresponding pH value of 9.8 to 10.2. The waste concentrate with added sodium hydroxide is mixed with a binder to embed it into the binder.

Abstract: Electro-hydraulic control assembly for turbine valves, including electric control means, a shaft connected to a turbine valve, a valve housing and an integrated compact actuator unit disposed in the housing, the actuator unit including an electro-hydraulic converter connected to the electric control means, a hydraulic control cylinder being connected to the electro-hydraulic converter and having a control piston connected to the shaft, and a hydraulic supply system, the supply system including a fluid reservoir, a fluid pump being fed from the fluid reservoir and having a pressure side, an electric motor for driving the pump, and a hydraulic pressure accumulator connected to the pressure side of the pump.

Abstract: Vibration damping guide vane ring assembly of an axial flow turbomachine, including mutually adjacent guide vanes, individual cover plates each being rigidly connected to a respective guide vane forming a cover band of the guide vane ring, the cover plates being frictionally connected to each other and the cover plates of the adjacent guide vanes having wedge-shaped recesses formed therein between the cover plates, and wedge-shaped damping elements having surfaces and being movably inserted in the recesses, each of the wedge-shaped damping elements exerting a vibration damping pressure on the respective cover plates through the surfaces of the damping elements in response to an axial pressure difference across the guide vane ring.

Abstract: Heat retarding closure system for partitions having pressure relief openings formed therein especially in nuclear reactor buildings where main coolant nozzles of a reactor pressure vessel penetrate a biological shield, including lightweight construction closure elements having a side facing the reactor and anchors for holding the closure elements, the closure elements being pushable out of the anchors by an overpressure in a given pressure difference direction on the reactor side, and an outer sealing blowout skin, the closure elements being in the form of heat-retarding cassette inserts having a front surface with a peripheral shearing edge formed thereon resting against the blowout skin, and the blowout skin having a given thickness in the given pressure difference direction enabling the cassette insert to shear off the blowout skin and be pushed out of the anchors when a given pressure difference is at least reached.

Abstract: Steam power plant, including a steam turbine having a high pressure section with an exhaust steam outlet, a steam generator having a live steam side connected upstream of the high pressure section of the steam turbine, the steam generator having a combustion chamber and a convection space formed therein, an intermediate superheater heating surface having an outlet and having an inlet being connected to the exhaust steam outlet of the high pressure section of the steam turbine, a device for applying combustion air to the combustion chamber of the steam generator, and a device disposed at the outlet of the intermediate superheater heating surface for regulating steam temperature thereat, the regulating device including a nozzle terminating in the convection space of the steam generator between the combustion chamber and the intermediate superheater heating surface.

Abstract: Analysis manipulator for non-destructive material testing, including a support device having a mounting flange, a precision coordinate-moving mechanism having at least two guide frames each including coordinate drives in the form of straight guides and a drive having a spindle and a nut being movable by the spindle along the straight guides, the guide frames including a first lower guide frame having a mounting flange being mountable to the mounting flange of the support device, a second guide frame being movable by the coordinate drive of the first guide frame in a first given coordinate direction, and a testing head mount being movable by the coordinate drive of the second guide frame in a second given coordinate direction, and a method for the coordinate control of the analysis manipulator.

Abstract: A tube lane manipulator assembly for the high-pressure blowdown of heat exchangers of steam generators includes a manipulator, at least one vehicle disposed on the manipulator having a lower base body with a substantially rectangular cross section, a spraying head with nozzles on the vehicle, the vehicle being insertible into tube lanes of the tubes of the generator through service openings and being movable in the tube lanes by remote control, the spraying head being movable into position for spraying jets into interspaces between the tubes, at least two clamping legs disposed in tandem in the feed direction on a side of the vehicle for clamping the vehicle to the tubes in conformity with a tube pitch in a clamping plane on at least one side of the tube lane for positioning the nozzles in spraying positions, the spraying direction of the nozzles and the distance thereof from the clamping plane being matched to the tube pitch for directing the spray jets into the interspaces, and at least one L-shaped guide r

Abstract: Fuel assembly for a nuclear reactor having a bundle of fuel rods of circular cross section extending parallel to one another and disposed at positions forming a raster, including a guide tube for a control rod extending parallel to the fuel rods in the bundle and occupying the positions for and having a cross section covering the cross section of a plurality of mutually adjacent fuel rods in the raster the cross section of the guide tube being defined by circular arcs conforming with those of the circular cross section of the adjacent fuel rods covered thereby and being connected by concave arcuate sections.

Abstract: Apparatus for the contactless and brushless transmission of measuring and control signals by generators with rotating rectifier or thyristor excitation, including a shaft having an outer surface, a driving collar integral with the shaft, a shrouding ring lying at ground potential being integral with the driving collar and rotationally fixed relative to the shaft, the shrouding ring having a given axial range and an outer surface, a first and a second inductive signal transmission apparatus each including respective stationary and rotating parts, the second signal transmission apparatus being disposed concentrically within the first signal transmission apparatus in the given axial range of the shrouding ring, the rotating part of the first signal transmission apparatus being disposed on the outer surface of the shrouding ring, and the rotating part of the second signal transmission apparatus being disposed on the outer surface of the shaft.

Abstract: In an electro-hydraulic control assembly for turbine valves, including a shaft for the turbine valve, a valve housing, electrical control means, an electro-hydraulic converter connected to the electrical control means, a hydraulic control cylinder being connected to the electro-hydraulic converter, a control piston being movable in the cylinder in a valve opening and a valve closing direction and being connected to the valve shaft, a force storing spring loading the piston in the valve closing direction, and a hydraulic system including a hydraulic fluid reservoir, a fluid pump being fed from the reservoir and having a pressure side, an electric motor for driving the pump and a hydraulic pressure accumulator connected to the pressure side of the pump, the improvement including a support structure disposed in the housing including two mutually parallel support plates, the spring being disposed between the support plates, the electro-hydraulic converter, the cylinder and the supply system being fastened to the