Steuersäule aus einem Brennelement und einem Absorberelement für einen Kernreaktor

摘要

In a control column in which an absorber element (AE) is coupled to the head of a fuel element (BE) via a coupling component (CE), the region between the lower edge (HA) of the absorber (26) in the absorber element and the upper edge (HF) of the fuel in the fuel rods (7) of the fuel element has an absorber material (15, 32) which extends virtually throughout the entire coupling component. In the fuel element there are absorbing stubs (15) for this purpose which extend through the cover plate (6) of the fuel element and engage in the interstices between the fuel elements (7). The appropriate absorber element has a hollow cylinder (32) which is surrounded by coupling components (30, 31). This prevents the occurence of power distortions which can be produced during the operation of a reactor if the top (HF) of the fuel abuts a region which contains no fuel from the fuel element and as yet no absorber components of the absorber element.