Disconnection control assembly between a control cluster and a control rod of a device for controlling the reactivity of a nuclear reactor

摘要

The invention relates to a control assembly (10) for a nuclear reactor, the assembly comprising: - a reactivity control device (11) comprising a control cluster (12) comprising a fixing head (22), a control rod (14) comprising a fixing device (16) for fixing the control rod ( 14) to the fixing head (22), the fixing device (16) being movable between a connection position and a disconnection position, the control rod (14) and the fixing device (16) defining an axial housing (34) passing through forming a sheath (35), - a control device (13) cooperating with the reactivity control device (11) comprising a palpation rod (36) mounted free in translation in the sheath (35) and having a bu-shaped lower end (38) tee on the fixing head (22) of the control cluster (12). Figure for abstract: Figure 1