Abstract: A turbocharger for an internal combustion engine has a turbine casing including an inlet opening from which radially internally and radially external spiral paths extend. These spiral paths have a common partition, and the exhaust gas inlet cross-section of the turbine casing can be varied by a control element for the purpose of adapting the characteristic curve of the turbocharger to different operating ranges of the internal combustion engine. And, the spiral paths are in hydrodynamic communication through orifice areas provided in the partition, with such orifice areas being spaced an equal distance from one another in the direction of flow of the exhaust gas, and the spiral paths extend substantially over the entire peripheral area of the turbine wheel.

Abstract: Installation for cooling a water-filled fuel element storage well, including a plurality of cooling circuits having drain lines with connections to the well, pumps connected to the drain lines, heat exchangers connected to the pumps and feed lines being connected to the heat exchangers and having connections to the well, one of the connections of the drain lines to the well being disposed at a level which is at least as high as the other of the drain line and feed line connections, and a downwardly directed pipe disposed in the storage well being connected to the one of the drain line connections and having a lower opening formed therein at a lower level than the drain line and feed line connections.