Patent Number: 041522044
Section: description

Referring now to the drawing in detail, the reactor 1 comprises a reflector 2 of graphite which contains a filling 3 of ball-shaped fuel and/or breeder elements. In customary manner, the reactor comprises a device for controlling the power output and for turning off the core reactor. More specifically, according to this invention, the device comprises a first absorber material containing component for turning off the core reactor, which first component in the form of absorber rods 4 is movable into said filling 3. The device also comprises a second absorber material containing component which serves for controlling the output of the core reactor and is displaceable within that chamber portion 5 of the reflector 2 which is defined by the top surface 6 of the filling 3 and by the reflector wall above said filling 3. The depth to which said second component is movable into said chamber portion 5 is limited from below by the top surface 6 of said filling 3. In this connection, it has proved particularly advantageous within the ambit of the present invention to make said second component of a plurality of plates 7 containing absorber material. According to a further feature of the invention, the first component 4 for turning off the core reactor is for controlling the output of the core reactor also displaceable in a predetermined manner within that chamber portion 5 of the reflector 2 which is defined by the top surface 6 of the filling 3 and the reflector portion above the level of said surface 6. It is, of course, to be understood that the present invention is, by no means, limited to the specific showing in the drawing, but also comprises any modifications within the scope of the appended claims.