Abstract: Method for manipulating and/or storing a nuclear reactor fuel assembly including an elongated skeleton structure with fuel rods and a holding device, which includes placing neutron-absorbing material adjacent the fuel rods, fastening a supplemental body with a handle to the skeleton structure, engaging the neutron-absorbing material with the supplemental body, and fitting a coupling part of the holding device to the handle, and a fuel assembly produced according to the method.

Abstract: In a blow-off device for limiting excess pressure in nuclear power plants, at least one condensation tube disposed so that a lower outlet end thereof is immersed in a volume of cooling water in a condensation chamber having a gas cushion located in a space above the volume of cooling water, and the upper inlet end of the condensation tube extending out of the volume of cooling water and being connectible to a source of condensing steam or a steam-air mixture, the outlet end of the condensation tube being provided with an insert for smoothing the condensation, said insert comprising wall portions forming storage chambers distributed over the length of said tube outlet end and having overflow edges for the cooling water, whereby a spraying action multiplying the heat-transfer surface between the cooling water and a flow of the steam is releasable at said overflow edges when cooling water received in said storage chambers is alternatingly depleted and replenished due to pressure and water-level fluctuations with

Abstract: Dry storage system for spent nuclear-reactor fuel assemblies including a building having an interior secured against external influence, devices disposed in the building for removing from shipping containers, by remote control, spent fuel assemblies delivered in the shipping containers into the building and for enclosing the fuel assemblies in gas-tight storage boxes as well as filling the remaining space in the storage boxes with heat-conducting medium, at least one storage chamber in the building having therein storage racks for supporting the fuel-element storage boxes in horizontal stacks, a transporting device movable into respective coordinate positions for stacking the fuel-element storage boxes horizontally in the storage racks, and heat removing devices disposed in outer walls of the building for providing natural air circulation through the storage racks.

Abstract: Cooling system for containers for transporting heat-emitting parts from nuclear installations, including a closed loop connected to the container for carrying water and steam or water alone, the loop having disposed therein a heatable mixing condenser, a filter installation, a cooler, a pump, and valve-control means for controlling pressure and temperature in the loop.

Abstract: In a blow-off device for limiting excess pressure in nuclear power plants, at least one condensation tube disposed so that a lower outlet end thereof is immersed in a volume of water in a condensation chamber having a gas cushion located in a space above the volume of water, and the upper inlet end of the condensation tube extending out of the volume of water and being connectible to a source of steam that is to be condensed or a steam-air mixture, the outlet end of the condensation tube, for smoothing the condensation, being provided with wall parts forming passages extending in axial direction, delimited from one another and terminating in the water volume, the wall parts serving to subdivide steam flow from the source thereof and bubbles produced thereby in the water volume, the wall parts being constructed as a tube attachment and being formed with an opening corresponding to the outlet end of the condensation tube and by means of which the tube attachment is mounted on the outlet end of the condensation